first

.gitignore

@@ -0,0 +1 @@
+t

Procfile

@@ -0,0 +1 @@
+web: bin/t

ent/client.go

@@ -0,0 +1,213 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"t/ent/migrate"
+
+	"t/ent/users"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+)
+
+// Client is the client that holds all ent builders.
+type Client struct {
+	config
+	// Schema is the client for creating, migrating and dropping schema.
+	Schema *migrate.Schema
+	// Users is the client for interacting with the Users builders.
+	Users *UsersClient
+}
+
+// NewClient creates a new client configured with the given options.
+func NewClient(opts ...Option) *Client {
+	cfg := config{log: log.Println, hooks: &hooks{}}
+	cfg.options(opts...)
+	client := &Client{config: cfg}
+	client.init()
+	return client
+}
+
+func (c *Client) init() {
+	c.Schema = migrate.NewSchema(c.driver)
+	c.Users = NewUsersClient(c.config)
+}
+
+// Open opens a database/sql.DB specified by the driver name and
+// the data source name, and returns a new client attached to it.
+// Optional parameters can be added for configuring the client.
+func Open(driverName, dataSourceName string, options ...Option) (*Client, error) {
+	switch driverName {
+	case dialect.MySQL, dialect.Postgres, dialect.SQLite:
+		drv, err := sql.Open(driverName, dataSourceName)
+		if err != nil {
+			return nil, err
+		}
+		return NewClient(append(options, Driver(drv))...), nil
+	default:
+		return nil, fmt.Errorf("unsupported driver: %q", driverName)
+	}
+}
+
+// Tx returns a new transactional client. The provided context
+// is used until the transaction is committed or rolled back.
+func (c *Client) Tx(ctx context.Context) (*Tx, error) {
+	if _, ok := c.driver.(*txDriver); ok {
+		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
+	}
+	tx, err := newTx(ctx, c.driver)
+	if err != nil {
+		return nil, fmt.Errorf("ent: starting a transaction: %w", err)
+	}
+	cfg := c.config
+	cfg.driver = tx
+	return &Tx{
+		ctx:    ctx,
+		config: cfg,
+		Users:  NewUsersClient(cfg),
+	}, nil
+}
+
+// BeginTx returns a transactional client with specified options.
+func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) {
+	if _, ok := c.driver.(*txDriver); ok {
+		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
+	}
+	tx, err := c.driver.(interface {
+		BeginTx(context.Context, *sql.TxOptions) (dialect.Tx, error)
+	}).BeginTx(ctx, opts)
+	if err != nil {
+		return nil, fmt.Errorf("ent: starting a transaction: %w", err)
+	}
+	cfg := c.config
+	cfg.driver = &txDriver{tx: tx, drv: c.driver}
+	return &Tx{
+		ctx:    ctx,
+		config: cfg,
+		Users:  NewUsersClient(cfg),
+	}, nil
+}
+
+// Debug returns a new debug-client. It's used to get verbose logging on specific operations.
+//
+//	client.Debug().
+//		Users.
+//		Query().
+//		Count(ctx)
+//
+func (c *Client) Debug() *Client {
+	if c.debug {
+		return c
+	}
+	cfg := c.config
+	cfg.driver = dialect.Debug(c.driver, c.log)
+	client := &Client{config: cfg}
+	client.init()
+	return client
+}
+
+// Close closes the database connection and prevents new queries from starting.
+func (c *Client) Close() error {
+	return c.driver.Close()
+}
+
+// Use adds the mutation hooks to all the entity clients.
+// In order to add hooks to a specific client, call: `client.Node.Use(...)`.
+func (c *Client) Use(hooks ...Hook) {
+	c.Users.Use(hooks...)
+}
+
+// UsersClient is a client for the Users schema.
+type UsersClient struct {
+	config
+}
+
+// NewUsersClient returns a client for the Users from the given config.
+func NewUsersClient(c config) *UsersClient {
+	return &UsersClient{config: c}
+}
+
+// Use adds a list of mutation hooks to the hooks stack.
+// A call to `Use(f, g, h)` equals to `users.Hooks(f(g(h())))`.
+func (c *UsersClient) Use(hooks ...Hook) {
+	c.hooks.Users = append(c.hooks.Users, hooks...)
+}
+
+// Create returns a create builder for Users.
+func (c *UsersClient) Create() *UsersCreate {
+	mutation := newUsersMutation(c.config, OpCreate)
+	return &UsersCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// CreateBulk returns a builder for creating a bulk of Users entities.
+func (c *UsersClient) CreateBulk(builders ...*UsersCreate) *UsersCreateBulk {
+	return &UsersCreateBulk{config: c.config, builders: builders}
+}
+
+// Update returns an update builder for Users.
+func (c *UsersClient) Update() *UsersUpdate {
+	mutation := newUsersMutation(c.config, OpUpdate)
+	return &UsersUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOne returns an update builder for the given entity.
+func (c *UsersClient) UpdateOne(u *Users) *UsersUpdateOne {
+	mutation := newUsersMutation(c.config, OpUpdateOne, withUsers(u))
+	return &UsersUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOneID returns an update builder for the given id.
+func (c *UsersClient) UpdateOneID(id int) *UsersUpdateOne {
+	mutation := newUsersMutation(c.config, OpUpdateOne, withUsersID(id))
+	return &UsersUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// Delete returns a delete builder for Users.
+func (c *UsersClient) Delete() *UsersDelete {
+	mutation := newUsersMutation(c.config, OpDelete)
+	return &UsersDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// DeleteOne returns a delete builder for the given entity.
+func (c *UsersClient) DeleteOne(u *Users) *UsersDeleteOne {
+	return c.DeleteOneID(u.ID)
+}
+
+// DeleteOneID returns a delete builder for the given id.
+func (c *UsersClient) DeleteOneID(id int) *UsersDeleteOne {
+	builder := c.Delete().Where(users.ID(id))
+	builder.mutation.id = &id
+	builder.mutation.op = OpDeleteOne
+	return &UsersDeleteOne{builder}
+}
+
+// Query returns a query builder for Users.
+func (c *UsersClient) Query() *UsersQuery {
+	return &UsersQuery{
+		config: c.config,
+	}
+}
+
+// Get returns a Users entity by its id.
+func (c *UsersClient) Get(ctx context.Context, id int) (*Users, error) {
+	return c.Query().Where(users.ID(id)).Only(ctx)
+}
+
+// GetX is like Get, but panics if an error occurs.
+func (c *UsersClient) GetX(ctx context.Context, id int) *Users {
+	obj, err := c.Get(ctx, id)
+	if err != nil {
+		panic(err)
+	}
+	return obj
+}
+
+// Hooks returns the client hooks.
+func (c *UsersClient) Hooks() []Hook {
+	return c.hooks.Users
+}

ent/config.go

@@ -0,0 +1,59 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+)
+
+// Option function to configure the client.
+type Option func(*config)
+
+// Config is the configuration for the client and its builder.
+type config struct {
+	// driver used for executing database requests.
+	driver dialect.Driver
+	// debug enable a debug logging.
+	debug bool
+	// log used for logging on debug mode.
+	log func(...interface{})
+	// hooks to execute on mutations.
+	hooks *hooks
+}
+
+// hooks per client, for fast access.
+type hooks struct {
+	Users []ent.Hook
+}
+
+// Options applies the options on the config object.
+func (c *config) options(opts ...Option) {
+	for _, opt := range opts {
+		opt(c)
+	}
+	if c.debug {
+		c.driver = dialect.Debug(c.driver, c.log)
+	}
+}
+
+// Debug enables debug logging on the ent.Driver.
+func Debug() Option {
+	return func(c *config) {
+		c.debug = true
+	}
+}
+
+// Log sets the logging function for debug mode.
+func Log(fn func(...interface{})) Option {
+	return func(c *config) {
+		c.log = fn
+	}
+}
+
+// Driver configures the client driver.
+func Driver(driver dialect.Driver) Option {
+	return func(c *config) {
+		c.driver = driver
+	}
+}

ent/context.go

@@ -0,0 +1,33 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+)
+
+type clientCtxKey struct{}
+
+// FromContext returns a Client stored inside a context, or nil if there isn't one.
+func FromContext(ctx context.Context) *Client {
+	c, _ := ctx.Value(clientCtxKey{}).(*Client)
+	return c
+}
+
+// NewContext returns a new context with the given Client attached.
+func NewContext(parent context.Context, c *Client) context.Context {
+	return context.WithValue(parent, clientCtxKey{}, c)
+}
+
+type txCtxKey struct{}
+
+// TxFromContext returns a Tx stored inside a context, or nil if there isn't one.
+func TxFromContext(ctx context.Context) *Tx {
+	tx, _ := ctx.Value(txCtxKey{}).(*Tx)
+	return tx
+}
+
+// NewTxContext returns a new context with the given Tx attached.
+func NewTxContext(parent context.Context, tx *Tx) context.Context {
+	return context.WithValue(parent, txCtxKey{}, tx)
+}

ent/ent.go

@@ -0,0 +1,259 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"errors"
+	"fmt"
+	"t/ent/users"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+)
+
+// ent aliases to avoid import conflicts in user's code.
+type (
+	Op         = ent.Op
+	Hook       = ent.Hook
+	Value      = ent.Value
+	Query      = ent.Query
+	Policy     = ent.Policy
+	Mutator    = ent.Mutator
+	Mutation   = ent.Mutation
+	MutateFunc = ent.MutateFunc
+)
+
+// OrderFunc applies an ordering on the sql selector.
+type OrderFunc func(*sql.Selector)
+
+// columnChecker returns a function indicates if the column exists in the given column.
+func columnChecker(table string) func(string) error {
+	checks := map[string]func(string) bool{
+		users.Table: users.ValidColumn,
+	}
+	check, ok := checks[table]
+	if !ok {
+		return func(string) error {
+			return fmt.Errorf("unknown table %q", table)
+		}
+	}
+	return func(column string) error {
+		if !check(column) {
+			return fmt.Errorf("unknown column %q for table %q", column, table)
+		}
+		return nil
+	}
+}
+
+// Asc applies the given fields in ASC order.
+func Asc(fields ...string) OrderFunc {
+	return func(s *sql.Selector) {
+		check := columnChecker(s.TableName())
+		for _, f := range fields {
+			if err := check(f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("ent: %w", err)})
+			}
+			s.OrderBy(sql.Asc(s.C(f)))
+		}
+	}
+}
+
+// Desc applies the given fields in DESC order.
+func Desc(fields ...string) OrderFunc {
+	return func(s *sql.Selector) {
+		check := columnChecker(s.TableName())
+		for _, f := range fields {
+			if err := check(f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("ent: %w", err)})
+			}
+			s.OrderBy(sql.Desc(s.C(f)))
+		}
+	}
+}
+
+// AggregateFunc applies an aggregation step on the group-by traversal/selector.
+type AggregateFunc func(*sql.Selector) string
+
+// As is a pseudo aggregation function for renaming another other functions with custom names. For example:
+//
+//	GroupBy(field1, field2).
+//	Aggregate(ent.As(ent.Sum(field1), "sum_field1"), (ent.As(ent.Sum(field2), "sum_field2")).
+//	Scan(ctx, &v)
+//
+func As(fn AggregateFunc, end string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.As(fn(s), end)
+	}
+}
+
+// Count applies the "count" aggregation function on each group.
+func Count() AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.Count("*")
+	}
+}
+
+// Max applies the "max" aggregation function on the given field of each group.
+func Max(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Max(s.C(field))
+	}
+}
+
+// Mean applies the "mean" aggregation function on the given field of each group.
+func Mean(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Avg(s.C(field))
+	}
+}
+
+// Min applies the "min" aggregation function on the given field of each group.
+func Min(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Min(s.C(field))
+	}
+}
+
+// Sum applies the "sum" aggregation function on the given field of each group.
+func Sum(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Sum(s.C(field))
+	}
+}
+
+// ValidationError returns when validating a field or edge fails.
+type ValidationError struct {
+	Name string // Field or edge name.
+	err  error
+}
+
+// Error implements the error interface.
+func (e *ValidationError) Error() string {
+	return e.err.Error()
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ValidationError) Unwrap() error {
+	return e.err
+}
+
+// IsValidationError returns a boolean indicating whether the error is a validation error.
+func IsValidationError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ValidationError
+	return errors.As(err, &e)
+}
+
+// NotFoundError returns when trying to fetch a specific entity and it was not found in the database.
+type NotFoundError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotFoundError) Error() string {
+	return "ent: " + e.label + " not found"
+}
+
+// IsNotFound returns a boolean indicating whether the error is a not found error.
+func IsNotFound(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotFoundError
+	return errors.As(err, &e)
+}
+
+// MaskNotFound masks not found error.
+func MaskNotFound(err error) error {
+	if IsNotFound(err) {
+		return nil
+	}
+	return err
+}
+
+// NotSingularError returns when trying to fetch a singular entity and more then one was found in the database.
+type NotSingularError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotSingularError) Error() string {
+	return "ent: " + e.label + " not singular"
+}
+
+// IsNotSingular returns a boolean indicating whether the error is a not singular error.
+func IsNotSingular(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotSingularError
+	return errors.As(err, &e)
+}
+
+// NotLoadedError returns when trying to get a node that was not loaded by the query.
+type NotLoadedError struct {
+	edge string
+}
+
+// Error implements the error interface.
+func (e *NotLoadedError) Error() string {
+	return "ent: " + e.edge + " edge was not loaded"
+}
+
+// IsNotLoaded returns a boolean indicating whether the error is a not loaded error.
+func IsNotLoaded(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotLoadedError
+	return errors.As(err, &e)
+}
+
+// ConstraintError returns when trying to create/update one or more entities and
+// one or more of their constraints failed. For example, violation of edge or
+// field uniqueness.
+type ConstraintError struct {
+	msg  string
+	wrap error
+}
+
+// Error implements the error interface.
+func (e ConstraintError) Error() string {
+	return "ent: constraint failed: " + e.msg
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ConstraintError) Unwrap() error {
+	return e.wrap
+}
+
+// IsConstraintError returns a boolean indicating whether the error is a constraint failure.
+func IsConstraintError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ConstraintError
+	return errors.As(err, &e)
+}

ent/entc.go

@@ -0,0 +1,85 @@
+//go:build ignore
+
+package main
+
+import (
+	"log"
+
+	"entgo.io/contrib/entoas"
+	"entgo.io/ent/entc"
+	"entgo.io/ent/entc/gen"
+	"github.com/ariga/ogent"
+	"github.com/ogen-go/ogen"
+)
+
+func main() {
+	spec := new(ogen.Spec)
+
+	//oas, err := entoas.NewExtension(entoas.Spec(spec))
+	oas, err := entoas.NewExtension(
+		entoas.Spec(spec),
+		entoas.Mutations(func(_ *gen.Graph, spec *ogen.Spec) error {
+			spec.AddPathItem("/users/{id}/start", ogen.NewPathItem().
+			SetDescription("Start an draw as done").
+			SetPatch(ogen.NewOperation().
+			SetOperationID("drawStart").
+			SetSummary("Draws a card item as done.").
+			AddTags("Users").
+			AddResponse("204", ogen.NewResponse().SetDescription("Item marked as done")),
+		).
+		AddParameters(ogen.NewParameter().
+		InPath().
+		SetName("id").
+		SetRequired(true).
+		SetSchema(ogen.Int()),
+	),
+)
+return nil
+								}),
+
+//								entoas.Mutations(func(_ *gen.Graph, spec *ogen.Spec) error {
+//									spec.AddPathItem(
+//										"/syui",
+//										ogen.NewPathItem().
+//										SetGet(
+//											ogen.NewOperation().
+//											SetOperationID("customReadUser").
+//
+//			AddResponse("204", ogen.NewResponse().SetDescription("Item marked as done")),
+//										),
+//									)
+//						return nil
+//					}),
+								entoas.Mutations(func(_ *gen.Graph, spec *ogen.Spec) error {
+									spec.AddPathItem("/users/{id}/d", ogen.NewPathItem().
+									SetDescription("Start an draw as done").
+									SetPut(ogen.NewOperation().
+									SetOperationID("drawDone").
+									SetSummary("Draws a card item as done.").
+									AddTags("Users").
+									AddResponse("204", ogen.NewResponse().SetDescription("Item marked as done")),
+									//AddResponse("204", ogen.NewResponse().SetDescription("Item marked as done").SetSchema("test")),
+								).
+								AddParameters(ogen.NewParameter().
+								InPath().
+								SetName("id").
+								SetRequired(true).
+								SetSchema(ogen.Int()),
+							),
+						)
+						return nil
+					}),
+				)
+
+				if err != nil {
+					log.Fatalf("creating entoas extension: %v", err)
+				}
+				ogent, err := ogent.NewExtension(spec)
+				if err != nil {
+					log.Fatalf("creating ogent extension: %v", err)
+				}
+				err = entc.Generate("./schema", &gen.Config{}, entc.Extensions(ogent, oas))
+				if err != nil {
+					log.Fatalf("running ent codegen: %v", err)
+				}
+			}

ent/enttest/enttest.go

@@ -0,0 +1,77 @@
+// Code generated by entc, DO NOT EDIT.
+
+package enttest
+
+import (
+	"context"
+	"t/ent"
+	// required by schema hooks.
+	_ "t/ent/runtime"
+
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+type (
+	// TestingT is the interface that is shared between
+	// testing.T and testing.B and used by enttest.
+	TestingT interface {
+		FailNow()
+		Error(...interface{})
+	}
+
+	// Option configures client creation.
+	Option func(*options)
+
+	options struct {
+		opts        []ent.Option
+		migrateOpts []schema.MigrateOption
+	}
+)
+
+// WithOptions forwards options to client creation.
+func WithOptions(opts ...ent.Option) Option {
+	return func(o *options) {
+		o.opts = append(o.opts, opts...)
+	}
+}
+
+// WithMigrateOptions forwards options to auto migration.
+func WithMigrateOptions(opts ...schema.MigrateOption) Option {
+	return func(o *options) {
+		o.migrateOpts = append(o.migrateOpts, opts...)
+	}
+}
+
+func newOptions(opts []Option) *options {
+	o := &options{}
+	for _, opt := range opts {
+		opt(o)
+	}
+	return o
+}
+
+// Open calls ent.Open and auto-run migration.
+func Open(t TestingT, driverName, dataSourceName string, opts ...Option) *ent.Client {
+	o := newOptions(opts)
+	c, err := ent.Open(driverName, dataSourceName, o.opts...)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	if err := c.Schema.Create(context.Background(), o.migrateOpts...); err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	return c
+}
+
+// NewClient calls ent.NewClient and auto-run migration.
+func NewClient(t TestingT, opts ...Option) *ent.Client {
+	o := newOptions(opts)
+	c := ent.NewClient(o.opts...)
+	if err := c.Schema.Create(context.Background(), o.migrateOpts...); err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	return c
+}

ent/generate.go

@@ -0,0 +1,4 @@
+package ent
+
+//go:generate go run -mod=mod entc.go
+

ent/hook/hook.go

@@ -0,0 +1,203 @@
+// Code generated by entc, DO NOT EDIT.
+
+package hook
+
+import (
+	"context"
+	"fmt"
+	"t/ent"
+)
+
+// The UsersFunc type is an adapter to allow the use of ordinary
+// function as Users mutator.
+type UsersFunc func(context.Context, *ent.UsersMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f UsersFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	mv, ok := m.(*ent.UsersMutation)
+	if !ok {
+		return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.UsersMutation", m)
+	}
+	return f(ctx, mv)
+}
+
+// Condition is a hook condition function.
+type Condition func(context.Context, ent.Mutation) bool
+
+// And groups conditions with the AND operator.
+func And(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		if !first(ctx, m) || !second(ctx, m) {
+			return false
+		}
+		for _, cond := range rest {
+			if !cond(ctx, m) {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// Or groups conditions with the OR operator.
+func Or(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		if first(ctx, m) || second(ctx, m) {
+			return true
+		}
+		for _, cond := range rest {
+			if cond(ctx, m) {
+				return true
+			}
+		}
+		return false
+	}
+}
+
+// Not negates a given condition.
+func Not(cond Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		return !cond(ctx, m)
+	}
+}
+
+// HasOp is a condition testing mutation operation.
+func HasOp(op ent.Op) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		return m.Op().Is(op)
+	}
+}
+
+// HasAddedFields is a condition validating `.AddedField` on fields.
+func HasAddedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if _, exists := m.AddedField(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.AddedField(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasClearedFields is a condition validating `.FieldCleared` on fields.
+func HasClearedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if exists := m.FieldCleared(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if exists := m.FieldCleared(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasFields is a condition validating `.Field` on fields.
+func HasFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if _, exists := m.Field(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.Field(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// If executes the given hook under condition.
+//
+//	hook.If(ComputeAverage, And(HasFields(...), HasAddedFields(...)))
+//
+func If(hk ent.Hook, cond Condition) ent.Hook {
+	return func(next ent.Mutator) ent.Mutator {
+		return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+			if cond(ctx, m) {
+				return hk(next).Mutate(ctx, m)
+			}
+			return next.Mutate(ctx, m)
+		})
+	}
+}
+
+// On executes the given hook only for the given operation.
+//
+//	hook.On(Log, ent.Delete|ent.Create)
+//
+func On(hk ent.Hook, op ent.Op) ent.Hook {
+	return If(hk, HasOp(op))
+}
+
+// Unless skips the given hook only for the given operation.
+//
+//	hook.Unless(Log, ent.Update|ent.UpdateOne)
+//
+func Unless(hk ent.Hook, op ent.Op) ent.Hook {
+	return If(hk, Not(HasOp(op)))
+}
+
+// FixedError is a hook returning a fixed error.
+func FixedError(err error) ent.Hook {
+	return func(ent.Mutator) ent.Mutator {
+		return ent.MutateFunc(func(context.Context, ent.Mutation) (ent.Value, error) {
+			return nil, err
+		})
+	}
+}
+
+// Reject returns a hook that rejects all operations that match op.
+//
+//	func (T) Hooks() []ent.Hook {
+//		return []ent.Hook{
+//			Reject(ent.Delete|ent.Update),
+//		}
+//	}
+//
+func Reject(op ent.Op) ent.Hook {
+	hk := FixedError(fmt.Errorf("%s operation is not allowed", op))
+	return On(hk, op)
+}
+
+// Chain acts as a list of hooks and is effectively immutable.
+// Once created, it will always hold the same set of hooks in the same order.
+type Chain struct {
+	hooks []ent.Hook
+}
+
+// NewChain creates a new chain of hooks.
+func NewChain(hooks ...ent.Hook) Chain {
+	return Chain{append([]ent.Hook(nil), hooks...)}
+}
+
+// Hook chains the list of hooks and returns the final hook.
+func (c Chain) Hook() ent.Hook {
+	return func(mutator ent.Mutator) ent.Mutator {
+		for i := len(c.hooks) - 1; i >= 0; i-- {
+			mutator = c.hooks[i](mutator)
+		}
+		return mutator
+	}
+}
+
+// Append extends a chain, adding the specified hook
+// as the last ones in the mutation flow.
+func (c Chain) Append(hooks ...ent.Hook) Chain {
+	newHooks := make([]ent.Hook, 0, len(c.hooks)+len(hooks))
+	newHooks = append(newHooks, c.hooks...)
+	newHooks = append(newHooks, hooks...)
+	return Chain{newHooks}
+}
+
+// Extend extends a chain, adding the specified chain
+// as the last ones in the mutation flow.
+func (c Chain) Extend(chain Chain) Chain {
+	return c.Append(chain.hooks...)
+}

ent/http/create.go

@@ -0,0 +1,224 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strings"
+	"t/ent"
+	"t/ent/compartment"
+	"t/ent/entry"
+	"t/ent/fridge"
+	"t/ent/item"
+
+	"github.com/mailru/easyjson"
+	"go.uber.org/zap"
+)
+
+// Create creates a new ent.Compartment and stores it in the database.
+func (h CompartmentHandler) Create(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Create"))
+	// Get the post data.
+	var d CompartmentCreateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Compartment.Create()
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		default:
+			l.Error("could not create compartment", zap.Error(err))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Store id of fresh entity to log errors for the reload.
+	id := e.ID
+	// Reload entry.
+	q := h.client.Compartment.Query().Where(compartment.ID(e.ID))
+	ret, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read compartment", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("compartment rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewCompartment3324871446View(ret), w)
+}
+
+// Create creates a new ent.Entry and stores it in the database.
+func (h EntryHandler) Create(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Create"))
+	// Get the post data.
+	var d EntryCreateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Validate the data.
+	errs := make(map[string]string)
+	if d.User == nil {
+		errs["user"] = `missing required field: "user"`
+	} else if err := entry.UserValidator(*d.User); err != nil {
+		errs["user"] = strings.TrimPrefix(err.Error(), "entry: ")
+	}
+	if d.First == nil {
+		errs["first"] = `missing required field: "first"`
+	}
+	if len(errs) > 0 {
+		l.Info("validation failed", zapFields(errs)...)
+		BadRequest(w, errs)
+		return
+	}
+	// Save the data.
+	b := h.client.Entry.Create()
+	if d.User != nil {
+		b.SetUser(*d.User)
+	}
+	if d.First != nil {
+		b.SetFirst(*d.First)
+	}
+	if d.CreatedAt != nil {
+		b.SetCreatedAt(*d.CreatedAt)
+	}
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		default:
+			l.Error("could not create entry", zap.Error(err))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Store id of fresh entity to log errors for the reload.
+	id := e.ID
+	// Reload entry.
+	q := h.client.Entry.Query().Where(entry.ID(e.ID))
+	ret, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.String("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.String("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read entry", zap.Error(err), zap.String("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("entry rendered", zap.String("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewEntry2675665849View(ret), w)
+}
+
+// Create creates a new ent.Fridge and stores it in the database.
+func (h FridgeHandler) Create(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Create"))
+	// Get the post data.
+	var d FridgeCreateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Fridge.Create()
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		default:
+			l.Error("could not create fridge", zap.Error(err))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Store id of fresh entity to log errors for the reload.
+	id := e.ID
+	// Reload entry.
+	q := h.client.Fridge.Query().Where(fridge.ID(e.ID))
+	ret, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read fridge", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("fridge rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewFridge2211356377View(ret), w)
+}
+
+// Create creates a new ent.Item and stores it in the database.
+func (h ItemHandler) Create(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Create"))
+	// Get the post data.
+	var d ItemCreateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Item.Create()
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		default:
+			l.Error("could not create item", zap.Error(err))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Store id of fresh entity to log errors for the reload.
+	id := e.ID
+	// Reload entry.
+	q := h.client.Item.Query().Where(item.ID(e.ID))
+	ret, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read item", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("item rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewItem1548468123View(ret), w)
+}

ent/http/delete.go

@@ -0,0 +1,116 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strconv"
+	"t/ent"
+
+	"github.com/go-chi/chi/v5"
+	"go.uber.org/zap"
+)
+
+// Delete removes a ent.Compartment from the database.
+func (h CompartmentHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Delete"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	err = h.client.Compartment.DeleteOneID(id).Exec(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		default:
+			l.Error("could-not-delete-compartment", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("compartment deleted", zap.Int("id", id))
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// Delete removes a ent.Entry from the database.
+func (h EntryHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Delete"))
+	// ID is URL parameter.
+	var err error
+	id := chi.URLParam(r, "id")
+	err = h.client.Entry.DeleteOneID(id).Exec(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.String("id", id))
+			NotFound(w, msg)
+		default:
+			l.Error("could-not-delete-entry", zap.Error(err), zap.String("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("entry deleted", zap.String("id", id))
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// Delete removes a ent.Fridge from the database.
+func (h FridgeHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Delete"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	err = h.client.Fridge.DeleteOneID(id).Exec(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		default:
+			l.Error("could-not-delete-fridge", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("fridge deleted", zap.Int("id", id))
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// Delete removes a ent.Item from the database.
+func (h ItemHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Delete"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	err = h.client.Item.DeleteOneID(id).Exec(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		default:
+			l.Error("could-not-delete-item", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("item deleted", zap.Int("id", id))
+	w.WriteHeader(http.StatusNoContent)
+}

ent/http/handler.go

@@ -0,0 +1,185 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"strings"
+	"t/ent"
+
+	"github.com/go-chi/chi/v5"
+	"go.uber.org/zap"
+)
+
+// NewHandler returns a ready to use handler with all generated endpoints mounted.
+func NewHandler(c *ent.Client, l *zap.Logger) chi.Router {
+	r := chi.NewRouter()
+	MountRoutes(c, l, r)
+	return r
+}
+
+// MountRoutes mounts all generated routes on the given router.
+func MountRoutes(c *ent.Client, l *zap.Logger, r chi.Router) {
+	NewCompartmentHandler(c, l).MountRoutes(r)
+	NewEntryHandler(c, l).MountRoutes(r)
+	NewFridgeHandler(c, l).MountRoutes(r)
+	NewItemHandler(c, l).MountRoutes(r)
+}
+
+// CompartmentHandler handles http crud operations on ent.Compartment.
+type CompartmentHandler struct {
+	client *ent.Client
+	log    *zap.Logger
+}
+
+func NewCompartmentHandler(c *ent.Client, l *zap.Logger) *CompartmentHandler {
+	return &CompartmentHandler{
+		client: c,
+		log:    l.With(zap.String("handler", "CompartmentHandler")),
+	}
+}
+func (h *CompartmentHandler) MountCreateRoute(r chi.Router) *CompartmentHandler {
+	r.Post("/compartments", h.Create)
+	return h
+}
+func (h *CompartmentHandler) MountReadRoute(r chi.Router) *CompartmentHandler {
+	r.Get("/compartments/{id}", h.Read)
+	return h
+}
+func (h *CompartmentHandler) MountUpdateRoute(r chi.Router) *CompartmentHandler {
+	r.Patch("/compartments/{id}", h.Update)
+	return h
+}
+func (h *CompartmentHandler) MountDeleteRoute(r chi.Router) *CompartmentHandler {
+	r.Delete("/compartments/{id}", h.Delete)
+	return h
+}
+func (h *CompartmentHandler) MountListRoute(r chi.Router) *CompartmentHandler {
+	r.Get("/compartments", h.List)
+	return h
+}
+func (h *CompartmentHandler) MountRoutes(r chi.Router) {
+	h.MountCreateRoute(r).MountReadRoute(r).MountUpdateRoute(r).MountDeleteRoute(r).MountListRoute(r)
+}
+
+// EntryHandler handles http crud operations on ent.Entry.
+type EntryHandler struct {
+	client *ent.Client
+	log    *zap.Logger
+}
+
+func NewEntryHandler(c *ent.Client, l *zap.Logger) *EntryHandler {
+	return &EntryHandler{
+		client: c,
+		log:    l.With(zap.String("handler", "EntryHandler")),
+	}
+}
+func (h *EntryHandler) MountCreateRoute(r chi.Router) *EntryHandler {
+	r.Post("/entries", h.Create)
+	return h
+}
+func (h *EntryHandler) MountReadRoute(r chi.Router) *EntryHandler {
+	r.Get("/entries/{id}", h.Read)
+	return h
+}
+func (h *EntryHandler) MountUpdateRoute(r chi.Router) *EntryHandler {
+	r.Patch("/entries/{id}", h.Update)
+	return h
+}
+func (h *EntryHandler) MountDeleteRoute(r chi.Router) *EntryHandler {
+	r.Delete("/entries/{id}", h.Delete)
+	return h
+}
+func (h *EntryHandler) MountListRoute(r chi.Router) *EntryHandler {
+	r.Get("/entries", h.List)
+	return h
+}
+func (h *EntryHandler) MountRoutes(r chi.Router) {
+	h.MountCreateRoute(r).MountReadRoute(r).MountUpdateRoute(r).MountDeleteRoute(r).MountListRoute(r)
+}
+
+// FridgeHandler handles http crud operations on ent.Fridge.
+type FridgeHandler struct {
+	client *ent.Client
+	log    *zap.Logger
+}
+
+func NewFridgeHandler(c *ent.Client, l *zap.Logger) *FridgeHandler {
+	return &FridgeHandler{
+		client: c,
+		log:    l.With(zap.String("handler", "FridgeHandler")),
+	}
+}
+func (h *FridgeHandler) MountCreateRoute(r chi.Router) *FridgeHandler {
+	r.Post("/fridges", h.Create)
+	return h
+}
+func (h *FridgeHandler) MountReadRoute(r chi.Router) *FridgeHandler {
+	r.Get("/fridges/{id}", h.Read)
+	return h
+}
+func (h *FridgeHandler) MountUpdateRoute(r chi.Router) *FridgeHandler {
+	r.Patch("/fridges/{id}", h.Update)
+	return h
+}
+func (h *FridgeHandler) MountDeleteRoute(r chi.Router) *FridgeHandler {
+	r.Delete("/fridges/{id}", h.Delete)
+	return h
+}
+func (h *FridgeHandler) MountListRoute(r chi.Router) *FridgeHandler {
+	r.Get("/fridges", h.List)
+	return h
+}
+func (h *FridgeHandler) MountRoutes(r chi.Router) {
+	h.MountCreateRoute(r).MountReadRoute(r).MountUpdateRoute(r).MountDeleteRoute(r).MountListRoute(r)
+}
+
+// ItemHandler handles http crud operations on ent.Item.
+type ItemHandler struct {
+	client *ent.Client
+	log    *zap.Logger
+}
+
+func NewItemHandler(c *ent.Client, l *zap.Logger) *ItemHandler {
+	return &ItemHandler{
+		client: c,
+		log:    l.With(zap.String("handler", "ItemHandler")),
+	}
+}
+func (h *ItemHandler) MountCreateRoute(r chi.Router) *ItemHandler {
+	r.Post("/items", h.Create)
+	return h
+}
+func (h *ItemHandler) MountReadRoute(r chi.Router) *ItemHandler {
+	r.Get("/items/{id}", h.Read)
+	return h
+}
+func (h *ItemHandler) MountUpdateRoute(r chi.Router) *ItemHandler {
+	r.Patch("/items/{id}", h.Update)
+	return h
+}
+func (h *ItemHandler) MountDeleteRoute(r chi.Router) *ItemHandler {
+	r.Delete("/items/{id}", h.Delete)
+	return h
+}
+func (h *ItemHandler) MountListRoute(r chi.Router) *ItemHandler {
+	r.Get("/items", h.List)
+	return h
+}
+func (h *ItemHandler) MountRoutes(r chi.Router) {
+	h.MountCreateRoute(r).MountReadRoute(r).MountUpdateRoute(r).MountDeleteRoute(r).MountListRoute(r)
+}
+
+func stripEntError(err error) string {
+	return strings.TrimPrefix(err.Error(), "ent: ")
+}
+
+func zapFields(errs map[string]string) []zap.Field {
+	if errs == nil || len(errs) == 0 {
+		return nil
+	}
+	r := make([]zap.Field, 0)
+	for k, v := range errs {
+		r = append(r, zap.String(k, v))
+	}
+	return r
+}

ent/http/list.go

@@ -0,0 +1,147 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/mailru/easyjson"
+	"go.uber.org/zap"
+)
+
+// Read fetches the ent.Compartment identified by a given url-parameter from the
+// database and returns it to the client.
+func (h *CompartmentHandler) List(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "List"))
+	q := h.client.Compartment.Query()
+	var err error
+	page := 1
+	if d := r.URL.Query().Get("page"); d != "" {
+		page, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'page'", zap.String("page", d), zap.Error(err))
+			BadRequest(w, "page must be an integer greater zero")
+			return
+		}
+	}
+	itemsPerPage := 30
+	if d := r.URL.Query().Get("itemsPerPage"); d != "" {
+		itemsPerPage, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'itemsPerPage'", zap.String("itemsPerPage", d), zap.Error(err))
+			BadRequest(w, "itemsPerPage must be an integer greater zero")
+			return
+		}
+	}
+	es, err := q.Limit(itemsPerPage).Offset((page - 1) * itemsPerPage).All(r.Context())
+	if err != nil {
+		l.Error("error fetching compartments from db", zap.Error(err))
+		InternalServerError(w, nil)
+		return
+	}
+	l.Info("compartments rendered", zap.Int("amount", len(es)))
+	easyjson.MarshalToHTTPResponseWriter(NewCompartment3324871446Views(es), w)
+}
+
+// Read fetches the ent.Entry identified by a given url-parameter from the
+// database and returns it to the client.
+func (h *EntryHandler) List(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "List"))
+	q := h.client.Entry.Query()
+	var err error
+	page := 1
+	if d := r.URL.Query().Get("page"); d != "" {
+		page, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'page'", zap.String("page", d), zap.Error(err))
+			BadRequest(w, "page must be an integer greater zero")
+			return
+		}
+	}
+	itemsPerPage := 30
+	if d := r.URL.Query().Get("itemsPerPage"); d != "" {
+		itemsPerPage, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'itemsPerPage'", zap.String("itemsPerPage", d), zap.Error(err))
+			BadRequest(w, "itemsPerPage must be an integer greater zero")
+			return
+		}
+	}
+	es, err := q.Limit(itemsPerPage).Offset((page - 1) * itemsPerPage).All(r.Context())
+	if err != nil {
+		l.Error("error fetching entries from db", zap.Error(err))
+		InternalServerError(w, nil)
+		return
+	}
+	l.Info("entries rendered", zap.Int("amount", len(es)))
+	easyjson.MarshalToHTTPResponseWriter(NewEntry2675665849Views(es), w)
+}
+
+// Read fetches the ent.Fridge identified by a given url-parameter from the
+// database and returns it to the client.
+func (h *FridgeHandler) List(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "List"))
+	q := h.client.Fridge.Query()
+	var err error
+	page := 1
+	if d := r.URL.Query().Get("page"); d != "" {
+		page, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'page'", zap.String("page", d), zap.Error(err))
+			BadRequest(w, "page must be an integer greater zero")
+			return
+		}
+	}
+	itemsPerPage := 30
+	if d := r.URL.Query().Get("itemsPerPage"); d != "" {
+		itemsPerPage, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'itemsPerPage'", zap.String("itemsPerPage", d), zap.Error(err))
+			BadRequest(w, "itemsPerPage must be an integer greater zero")
+			return
+		}
+	}
+	es, err := q.Limit(itemsPerPage).Offset((page - 1) * itemsPerPage).All(r.Context())
+	if err != nil {
+		l.Error("error fetching fridges from db", zap.Error(err))
+		InternalServerError(w, nil)
+		return
+	}
+	l.Info("fridges rendered", zap.Int("amount", len(es)))
+	easyjson.MarshalToHTTPResponseWriter(NewFridge2211356377Views(es), w)
+}
+
+// Read fetches the ent.Item identified by a given url-parameter from the
+// database and returns it to the client.
+func (h *ItemHandler) List(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "List"))
+	q := h.client.Item.Query()
+	var err error
+	page := 1
+	if d := r.URL.Query().Get("page"); d != "" {
+		page, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'page'", zap.String("page", d), zap.Error(err))
+			BadRequest(w, "page must be an integer greater zero")
+			return
+		}
+	}
+	itemsPerPage := 30
+	if d := r.URL.Query().Get("itemsPerPage"); d != "" {
+		itemsPerPage, err = strconv.Atoi(d)
+		if err != nil {
+			l.Info("error parsing query parameter 'itemsPerPage'", zap.String("itemsPerPage", d), zap.Error(err))
+			BadRequest(w, "itemsPerPage must be an integer greater zero")
+			return
+		}
+	}
+	es, err := q.Limit(itemsPerPage).Offset((page - 1) * itemsPerPage).All(r.Context())
+	if err != nil {
+		l.Error("error fetching items from db", zap.Error(err))
+		InternalServerError(w, nil)
+		return
+	}
+	l.Info("items rendered", zap.Int("amount", len(es)))
+	easyjson.MarshalToHTTPResponseWriter(NewItem1548468123Views(es), w)
+}

ent/http/read.go

@@ -0,0 +1,149 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strconv"
+	"t/ent"
+	"t/ent/compartment"
+	"t/ent/entry"
+	"t/ent/fridge"
+	"t/ent/item"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/mailru/easyjson"
+	"go.uber.org/zap"
+)
+
+// Read fetches the ent.Compartment identified by a given url-parameter from the
+// database and renders it to the client.
+func (h *CompartmentHandler) Read(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Read"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Create the query to fetch the Compartment
+	q := h.client.Compartment.Query().Where(compartment.ID(id))
+	e, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read compartment", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("compartment rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewCompartment3324871446View(e), w)
+}
+
+// Read fetches the ent.Entry identified by a given url-parameter from the
+// database and renders it to the client.
+func (h *EntryHandler) Read(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Read"))
+	// ID is URL parameter.
+	var err error
+	id := chi.URLParam(r, "id")
+	// Create the query to fetch the Entry
+	q := h.client.Entry.Query().Where(entry.ID(id))
+	e, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.String("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.String("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read entry", zap.Error(err), zap.String("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("entry rendered", zap.String("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewEntry2675665849View(e), w)
+}
+
+// Read fetches the ent.Fridge identified by a given url-parameter from the
+// database and renders it to the client.
+func (h *FridgeHandler) Read(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Read"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Create the query to fetch the Fridge
+	q := h.client.Fridge.Query().Where(fridge.ID(id))
+	e, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read fridge", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("fridge rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewFridge2211356377View(e), w)
+}
+
+// Read fetches the ent.Item identified by a given url-parameter from the
+// database and renders it to the client.
+func (h *ItemHandler) Read(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Read"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Create the query to fetch the Item
+	q := h.client.Item.Query().Where(item.ID(id))
+	e, err := q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could not read item", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("item rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewItem1548468123View(e), w)
+}

ent/http/relations.go

@@ -0,0 +1,3 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http

ent/http/request.go

@@ -0,0 +1,42 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"time"
+)
+
+// Payload of a ent.Compartment create request.
+type CompartmentCreateRequest struct {
+}
+
+// Payload of a ent.Compartment update request.
+type CompartmentUpdateRequest struct {
+}
+
+// Payload of a ent.Entry create request.
+type EntryCreateRequest struct {
+	User      *string    `json:"user"`
+	First     *int       `json:"first"`
+	CreatedAt *time.Time `json:"created_at"`
+}
+
+// Payload of a ent.Entry update request.
+type EntryUpdateRequest struct {
+}
+
+// Payload of a ent.Fridge create request.
+type FridgeCreateRequest struct {
+}
+
+// Payload of a ent.Fridge update request.
+type FridgeUpdateRequest struct {
+}
+
+// Payload of a ent.Item create request.
+type ItemCreateRequest struct {
+}
+
+// Payload of a ent.Item update request.
+type ItemUpdateRequest struct {
+}

ent/http/response.go

@@ -0,0 +1,200 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strconv"
+	"t/ent"
+	"time"
+
+	"github.com/mailru/easyjson"
+)
+
+// Basic HTTP Error Response
+type ErrResponse struct {
+	Code   int         `json:"code"`             // http response status code
+	Status string      `json:"status"`           // user-level status message
+	Errors interface{} `json:"errors,omitempty"` // application-level error
+}
+
+func (e ErrResponse) MarshalToHTTPResponseWriter(w http.ResponseWriter) (int, error) {
+	d, err := easyjson.Marshal(e)
+	if err != nil {
+		return 0, err
+	}
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.Header().Set("Content-Length", strconv.Itoa(len(d)))
+	w.WriteHeader(e.Code)
+	return w.Write(d)
+}
+
+func BadRequest(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusBadRequest,
+		Status: http.StatusText(http.StatusBadRequest),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+func Conflict(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusConflict,
+		Status: http.StatusText(http.StatusConflict),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+func Forbidden(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusForbidden,
+		Status: http.StatusText(http.StatusForbidden),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+func InternalServerError(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusInternalServerError,
+		Status: http.StatusText(http.StatusInternalServerError),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+func NotFound(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusNotFound,
+		Status: http.StatusText(http.StatusNotFound),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+func Unauthorized(w http.ResponseWriter, msg interface{}) (int, error) {
+	return ErrResponse{
+		Code:   http.StatusUnauthorized,
+		Status: http.StatusText(http.StatusUnauthorized),
+		Errors: msg,
+	}.MarshalToHTTPResponseWriter(w)
+}
+
+type (
+	// Compartment3324871446View represents the data serialized for the following serialization group combinations:
+	// []
+	Compartment3324871446View struct {
+		ID int `json:"id,omitempty"`
+	}
+	Compartment3324871446Views []*Compartment3324871446View
+)
+
+func NewCompartment3324871446View(e *ent.Compartment) *Compartment3324871446View {
+	if e == nil {
+		return nil
+	}
+	return &Compartment3324871446View{
+		ID: e.ID,
+	}
+}
+
+func NewCompartment3324871446Views(es []*ent.Compartment) Compartment3324871446Views {
+	if len(es) == 0 {
+		return nil
+	}
+	r := make(Compartment3324871446Views, len(es))
+	for i, e := range es {
+		r[i] = NewCompartment3324871446View(e)
+	}
+	return r
+}
+
+type (
+	// Entry2675665849View represents the data serialized for the following serialization group combinations:
+	// []
+	Entry2675665849View struct {
+		ID        string    `json:"id,omitempty"`
+		User      string    `json:"user,omitempty"`
+		First     int       `json:"first,omitempty"`
+		CreatedAt time.Time `json:"created_at,omitempty"`
+	}
+	Entry2675665849Views []*Entry2675665849View
+)
+
+func NewEntry2675665849View(e *ent.Entry) *Entry2675665849View {
+	if e == nil {
+		return nil
+	}
+	return &Entry2675665849View{
+		ID:        e.ID,
+		User:      e.User,
+		First:     e.First,
+		CreatedAt: e.CreatedAt,
+	}
+}
+
+func NewEntry2675665849Views(es []*ent.Entry) Entry2675665849Views {
+	if len(es) == 0 {
+		return nil
+	}
+	r := make(Entry2675665849Views, len(es))
+	for i, e := range es {
+		r[i] = NewEntry2675665849View(e)
+	}
+	return r
+}
+
+type (
+	// Fridge2211356377View represents the data serialized for the following serialization group combinations:
+	// []
+	Fridge2211356377View struct {
+		ID int `json:"id,omitempty"`
+	}
+	Fridge2211356377Views []*Fridge2211356377View
+)
+
+func NewFridge2211356377View(e *ent.Fridge) *Fridge2211356377View {
+	if e == nil {
+		return nil
+	}
+	return &Fridge2211356377View{
+		ID: e.ID,
+	}
+}
+
+func NewFridge2211356377Views(es []*ent.Fridge) Fridge2211356377Views {
+	if len(es) == 0 {
+		return nil
+	}
+	r := make(Fridge2211356377Views, len(es))
+	for i, e := range es {
+		r[i] = NewFridge2211356377View(e)
+	}
+	return r
+}
+
+type (
+	// Item1548468123View represents the data serialized for the following serialization group combinations:
+	// []
+	Item1548468123View struct {
+		ID int `json:"id,omitempty"`
+	}
+	Item1548468123Views []*Item1548468123View
+)
+
+func NewItem1548468123View(e *ent.Item) *Item1548468123View {
+	if e == nil {
+		return nil
+	}
+	return &Item1548468123View{
+		ID: e.ID,
+	}
+}
+
+func NewItem1548468123Views(es []*ent.Item) Item1548468123Views {
+	if len(es) == 0 {
+		return nil
+	}
+	r := make(Item1548468123Views, len(es))
+	for i, e := range es {
+		r[i] = NewItem1548468123View(e)
+	}
+	return r
+}

ent/http/update.go

@@ -0,0 +1,260 @@
+// Code generated by entc, DO NOT EDIT.
+
+package http
+
+import (
+	"net/http"
+	"strconv"
+	"t/ent"
+	"t/ent/compartment"
+	"t/ent/entry"
+	"t/ent/fridge"
+	"t/ent/item"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/mailru/easyjson"
+	"go.uber.org/zap"
+)
+
+// Update updates a given ent.Compartment and saves the changes to the database.
+func (h CompartmentHandler) Update(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Update"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Get the post data.
+	var d CompartmentUpdateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Compartment.UpdateOneID(id)
+	// Store in database.
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-update-compartment", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Reload entry.
+	q := h.client.Compartment.Query().Where(compartment.ID(e.ID))
+	e, err = q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-read-compartment", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("compartment rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewCompartment3324871446View(e), w)
+}
+
+// Update updates a given ent.Entry and saves the changes to the database.
+func (h EntryHandler) Update(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Update"))
+	// ID is URL parameter.
+	var err error
+	id := chi.URLParam(r, "id")
+	// Get the post data.
+	var d EntryUpdateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Validate the data.
+	errs := make(map[string]string)
+	if len(errs) > 0 {
+		l.Info("validation failed", zapFields(errs)...)
+		BadRequest(w, errs)
+		return
+	}
+	// Save the data.
+	b := h.client.Entry.UpdateOneID(id)
+	// Store in database.
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.String("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.String("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-update-entry", zap.Error(err), zap.String("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Reload entry.
+	q := h.client.Entry.Query().Where(entry.ID(e.ID))
+	e, err = q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.String("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.String("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-read-entry", zap.Error(err), zap.String("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("entry rendered", zap.String("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewEntry2675665849View(e), w)
+}
+
+// Update updates a given ent.Fridge and saves the changes to the database.
+func (h FridgeHandler) Update(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Update"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Get the post data.
+	var d FridgeUpdateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Fridge.UpdateOneID(id)
+	// Store in database.
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-update-fridge", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Reload entry.
+	q := h.client.Fridge.Query().Where(fridge.ID(e.ID))
+	e, err = q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-read-fridge", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("fridge rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewFridge2211356377View(e), w)
+}
+
+// Update updates a given ent.Item and saves the changes to the database.
+func (h ItemHandler) Update(w http.ResponseWriter, r *http.Request) {
+	l := h.log.With(zap.String("method", "Update"))
+	// ID is URL parameter.
+	id, err := strconv.Atoi(chi.URLParam(r, "id"))
+	if err != nil {
+		l.Error("error getting id from url parameter", zap.String("id", chi.URLParam(r, "id")), zap.Error(err))
+		BadRequest(w, "id must be an integer")
+		return
+	}
+	// Get the post data.
+	var d ItemUpdateRequest
+	if err := easyjson.UnmarshalFromReader(r.Body, &d); err != nil {
+		l.Error("error decoding json", zap.Error(err))
+		BadRequest(w, "invalid json string")
+		return
+	}
+	// Save the data.
+	b := h.client.Item.UpdateOneID(id)
+	// Store in database.
+	e, err := b.Save(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-update-item", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	// Reload entry.
+	q := h.client.Item.Query().Where(item.ID(e.ID))
+	e, err = q.Only(r.Context())
+	if err != nil {
+		switch {
+		case ent.IsNotFound(err):
+			msg := stripEntError(err)
+			l.Info(msg, zap.Error(err), zap.Int("id", id))
+			NotFound(w, msg)
+		case ent.IsNotSingular(err):
+			msg := stripEntError(err)
+			l.Error(msg, zap.Error(err), zap.Int("id", id))
+			BadRequest(w, msg)
+		default:
+			l.Error("could-not-read-item", zap.Error(err), zap.Int("id", id))
+			InternalServerError(w, nil)
+		}
+		return
+	}
+	l.Info("item rendered", zap.Int("id", id))
+	easyjson.MarshalToHTTPResponseWriter(NewItem1548468123View(e), w)
+}

ent/migrate/migrate.go

@@ -0,0 +1,71 @@
+// Code generated by entc, DO NOT EDIT.
+
+package migrate
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+var (
+	// WithGlobalUniqueID sets the universal ids options to the migration.
+	// If this option is enabled, ent migration will allocate a 1<<32 range
+	// for the ids of each entity (table).
+	// Note that this option cannot be applied on tables that already exist.
+	WithGlobalUniqueID = schema.WithGlobalUniqueID
+	// WithDropColumn sets the drop column option to the migration.
+	// If this option is enabled, ent migration will drop old columns
+	// that were used for both fields and edges. This defaults to false.
+	WithDropColumn = schema.WithDropColumn
+	// WithDropIndex sets the drop index option to the migration.
+	// If this option is enabled, ent migration will drop old indexes
+	// that were defined in the schema. This defaults to false.
+	// Note that unique constraints are defined using `UNIQUE INDEX`,
+	// and therefore, it's recommended to enable this option to get more
+	// flexibility in the schema changes.
+	WithDropIndex = schema.WithDropIndex
+	// WithFixture sets the foreign-key renaming option to the migration when upgrading
+	// ent from v0.1.0 (issue-#285). Defaults to false.
+	WithFixture = schema.WithFixture
+	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
+	WithForeignKeys = schema.WithForeignKeys
+)
+
+// Schema is the API for creating, migrating and dropping a schema.
+type Schema struct {
+	drv dialect.Driver
+}
+
+// NewSchema creates a new schema client.
+func NewSchema(drv dialect.Driver) *Schema { return &Schema{drv: drv} }
+
+// Create creates all schema resources.
+func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, Tables...)
+}
+
+// WriteTo writes the schema changes to w instead of running them against the database.
+//
+// 	if err := client.Schema.WriteTo(context.Background(), os.Stdout); err != nil {
+//		log.Fatal(err)
+// 	}
+//
+func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error {
+	drv := &schema.WriteDriver{
+		Writer: w,
+		Driver: s.drv,
+	}
+	migrate, err := schema.NewMigrate(drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, Tables...)
+}

ent/migrate/schema.go

@@ -0,0 +1,46 @@
+// Code generated by entc, DO NOT EDIT.
+
+package migrate
+
+import (
+	"entgo.io/ent/dialect/sql/schema"
+	"entgo.io/ent/schema/field"
+)
+
+var (
+	// UsersColumns holds the columns for the "users" table.
+	UsersColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "user", Type: field.TypeString, Unique: true, Size: 7},
+		{Name: "chara", Type: field.TypeString, Nullable: true, Default: "ponta"},
+		{Name: "skill", Type: field.TypeInt, Nullable: true, Default: 7},
+		{Name: "hp", Type: field.TypeInt, Nullable: true, Default: 7},
+		{Name: "attack", Type: field.TypeInt, Nullable: true, Default: 8},
+		{Name: "defense", Type: field.TypeInt, Nullable: true, Default: 19},
+		{Name: "critical", Type: field.TypeInt, Nullable: true, Default: 7},
+		{Name: "battle", Type: field.TypeInt, Nullable: true, Default: 1},
+		{Name: "win", Type: field.TypeInt, Nullable: true, Default: 0},
+		{Name: "day", Type: field.TypeInt, Nullable: true, Default: 0},
+		{Name: "percentage", Type: field.TypeFloat64, Nullable: true, Default: 0},
+		{Name: "limit", Type: field.TypeBool, Nullable: true, Default: false},
+		{Name: "status", Type: field.TypeString, Nullable: true, Default: "normal"},
+		{Name: "comment", Type: field.TypeString, Nullable: true, Default: ""},
+		{Name: "created_at", Type: field.TypeTime, Nullable: true},
+		{Name: "next", Type: field.TypeString, Nullable: true, Default: "20220617"},
+		{Name: "updated_at", Type: field.TypeTime, Nullable: true},
+		{Name: "url", Type: field.TypeString, Nullable: true, Default: "https://syui.cf/api"},
+	}
+	// UsersTable holds the schema information for the "users" table.
+	UsersTable = &schema.Table{
+		Name:       "users",
+		Columns:    UsersColumns,
+		PrimaryKey: []*schema.Column{UsersColumns[0]},
+	}
+	// Tables holds all the tables in the schema.
+	Tables = []*schema.Table{
+		UsersTable,
+	}
+)
+
+func init() {
+}

ent/ogent/oas_cfg_gen.go

@@ -0,0 +1,165 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+// bufPool is pool of bytes.Buffer for encoding and decoding.
+var bufPool = &sync.Pool{
+	New: func() interface{} {
+		return new(bytes.Buffer)
+	},
+}
+
+// getBuf returns buffer from pool.
+func getBuf() *bytes.Buffer {
+	return bufPool.Get().(*bytes.Buffer)
+}
+
+// putBuf puts buffer to pool.
+func putBuf(b *bytes.Buffer) {
+	b.Reset()
+	bufPool.Put(b)
+}
+
+type config struct {
+	TracerProvider trace.TracerProvider
+	Tracer         trace.Tracer
+	MeterProvider  metric.MeterProvider
+	Meter          metric.Meter
+	Client         ht.Client
+	NotFound       http.HandlerFunc
+}
+
+func newConfig(opts ...Option) config {
+	cfg := config{
+		TracerProvider: otel.GetTracerProvider(),
+		MeterProvider:  metric.NewNoopMeterProvider(),
+		Client:         http.DefaultClient,
+		NotFound:       http.NotFound,
+	}
+	for _, opt := range opts {
+		opt.apply(&cfg)
+	}
+	cfg.Tracer = cfg.TracerProvider.Tracer(otelogen.Name,
+		trace.WithInstrumentationVersion(otelogen.SemVersion()),
+	)
+	cfg.Meter = cfg.MeterProvider.Meter(otelogen.Name)
+	return cfg
+}
+
+type Option interface {
+	apply(*config)
+}
+
+type optionFunc func(*config)
+
+func (o optionFunc) apply(c *config) {
+	o(c)
+}
+
+// WithTracerProvider specifies a tracer provider to use for creating a tracer.
+//
+// If none is specified, the global provider is used.
+func WithTracerProvider(provider trace.TracerProvider) Option {
+	return optionFunc(func(cfg *config) {
+		if provider != nil {
+			cfg.TracerProvider = provider
+		}
+	})
+}
+
+// WithMeterProvider specifies a meter provider to use for creating a meter.
+//
+// If none is specified, the metric.NewNoopMeterProvider is used.
+func WithMeterProvider(provider metric.MeterProvider) Option {
+	return optionFunc(func(cfg *config) {
+		if provider != nil {
+			cfg.MeterProvider = provider
+		}
+	})
+}
+
+// WithClient specifies http client to use.
+func WithClient(client ht.Client) Option {
+	return optionFunc(func(cfg *config) {
+		if client != nil {
+			cfg.Client = client
+		}
+	})
+}
+
+// WithNotFound specifies http handler to use.
+func WithNotFound(notFound http.HandlerFunc) Option {
+	return optionFunc(func(cfg *config) {
+		if notFound != nil {
+			cfg.NotFound = notFound
+		}
+	})
+}

ent/ogent/oas_client_gen.go

@@ -0,0 +1,564 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+// Client implements OAS client.
+type Client struct {
+	serverURL *url.URL
+	cfg       config
+	requests  metric.Int64Counter
+	errors    metric.Int64Counter
+	duration  metric.Int64Histogram
+}
+
+// NewClient initializes new Client defined by OAS.
+func NewClient(serverURL string, opts ...Option) (*Client, error) {
+	u, err := url.Parse(serverURL)
+	if err != nil {
+		return nil, err
+	}
+	c := &Client{
+		cfg:       newConfig(opts...),
+		serverURL: u,
+	}
+	if c.requests, err = c.cfg.Meter.NewInt64Counter(otelogen.ClientRequestCount); err != nil {
+		return nil, err
+	}
+	if c.errors, err = c.cfg.Meter.NewInt64Counter(otelogen.ClientErrorsCount); err != nil {
+		return nil, err
+	}
+	if c.duration, err = c.cfg.Meter.NewInt64Histogram(otelogen.ClientDuration); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+// CreateUsers invokes createUsers operation.
+//
+// Creates a new Users and persists it to storage.
+//
+// POST /users
+func (c *Client) CreateUsers(ctx context.Context, request CreateUsersReq) (res CreateUsersRes, err error) {
+	if err := func() error {
+		if err := request.Validate(); err != nil {
+			return err
+		}
+		return nil
+	}(); err != nil {
+		return res, errors.Wrap(err, "validate")
+	}
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("createUsers"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "CreateUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	var (
+		contentType string
+		reqBody     io.Reader
+	)
+	contentType = "application/json"
+	buf, err := encodeCreateUsersRequestJSON(request, span)
+	if err != nil {
+		return res, err
+	}
+	defer jx.PutEncoder(buf)
+	reqBody = bytes.NewReader(buf.Bytes())
+
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users"
+
+	r := ht.NewRequest(ctx, "POST", u, reqBody)
+	defer ht.PutRequest(r)
+
+	r.Header.Set("Content-Type", contentType)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeCreateUsersResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// DeleteUsers invokes deleteUsers operation.
+//
+// Deletes the Users with the requested ID.
+//
+// DELETE /users/{id}
+func (c *Client) DeleteUsers(ctx context.Context, params DeleteUsersParams) (res DeleteUsersRes, err error) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("deleteUsers"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "DeleteUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users/"
+	{
+		// Encode "id" parameter.
+		e := uri.NewPathEncoder(uri.PathEncoderConfig{
+			Param:   "id",
+			Style:   uri.PathStyleSimple,
+			Explode: false,
+		})
+		if err := func() error {
+			return e.EncodeValue(conv.IntToString(params.ID))
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode path")
+		}
+		u.Path += e.Result()
+	}
+
+	r := ht.NewRequest(ctx, "DELETE", u, nil)
+	defer ht.PutRequest(r)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeDeleteUsersResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// DrawDone invokes drawDone operation.
+//
+// PUT /users/{id}/d
+func (c *Client) DrawDone(ctx context.Context, params DrawDoneParams) (res DrawDoneNoContent, err error) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("drawDone"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "DrawDone",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users/"
+	{
+		// Encode "id" parameter.
+		e := uri.NewPathEncoder(uri.PathEncoderConfig{
+			Param:   "id",
+			Style:   uri.PathStyleSimple,
+			Explode: false,
+		})
+		if err := func() error {
+			return e.EncodeValue(conv.IntToString(params.ID))
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode path")
+		}
+		u.Path += e.Result()
+	}
+	u.Path += "/d"
+
+	r := ht.NewRequest(ctx, "PUT", u, nil)
+	defer ht.PutRequest(r)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeDrawDoneResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// DrawStart invokes drawStart operation.
+//
+// PATCH /users/{id}/start
+func (c *Client) DrawStart(ctx context.Context, params DrawStartParams) (res DrawStartNoContent, err error) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("drawStart"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "DrawStart",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users/"
+	{
+		// Encode "id" parameter.
+		e := uri.NewPathEncoder(uri.PathEncoderConfig{
+			Param:   "id",
+			Style:   uri.PathStyleSimple,
+			Explode: false,
+		})
+		if err := func() error {
+			return e.EncodeValue(conv.IntToString(params.ID))
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode path")
+		}
+		u.Path += e.Result()
+	}
+	u.Path += "/start"
+
+	r := ht.NewRequest(ctx, "PATCH", u, nil)
+	defer ht.PutRequest(r)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeDrawStartResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// ListUsers invokes listUsers operation.
+//
+// List Users.
+//
+// GET /users
+func (c *Client) ListUsers(ctx context.Context, params ListUsersParams) (res ListUsersRes, err error) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("listUsers"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "ListUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users"
+
+	q := u.Query()
+	{
+		// Encode "page" parameter.
+		e := uri.NewQueryEncoder(uri.QueryEncoderConfig{
+			Style:   uri.QueryStyleForm,
+			Explode: true,
+		})
+		if err := func() error {
+			if val, ok := params.Page.Get(); ok {
+				return e.EncodeValue(conv.IntToString(val))
+			}
+			return nil
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode query")
+		}
+		q["page"] = e.Result()
+	}
+	{
+		// Encode "itemsPerPage" parameter.
+		e := uri.NewQueryEncoder(uri.QueryEncoderConfig{
+			Style:   uri.QueryStyleForm,
+			Explode: true,
+		})
+		if err := func() error {
+			if val, ok := params.ItemsPerPage.Get(); ok {
+				return e.EncodeValue(conv.IntToString(val))
+			}
+			return nil
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode query")
+		}
+		q["itemsPerPage"] = e.Result()
+	}
+	u.RawQuery = q.Encode()
+
+	r := ht.NewRequest(ctx, "GET", u, nil)
+	defer ht.PutRequest(r)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeListUsersResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// ReadUsers invokes readUsers operation.
+//
+// Finds the Users with the requested ID and returns it.
+//
+// GET /users/{id}
+func (c *Client) ReadUsers(ctx context.Context, params ReadUsersParams) (res ReadUsersRes, err error) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("readUsers"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "ReadUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users/"
+	{
+		// Encode "id" parameter.
+		e := uri.NewPathEncoder(uri.PathEncoderConfig{
+			Param:   "id",
+			Style:   uri.PathStyleSimple,
+			Explode: false,
+		})
+		if err := func() error {
+			return e.EncodeValue(conv.IntToString(params.ID))
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode path")
+		}
+		u.Path += e.Result()
+	}
+
+	r := ht.NewRequest(ctx, "GET", u, nil)
+	defer ht.PutRequest(r)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeReadUsersResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}
+
+// UpdateUsers invokes updateUsers operation.
+//
+// Updates a Users and persists changes to storage.
+//
+// PATCH /users/{id}
+func (c *Client) UpdateUsers(ctx context.Context, request UpdateUsersReq, params UpdateUsersParams) (res UpdateUsersRes, err error) {
+	if err := func() error {
+		if err := request.Validate(); err != nil {
+			return err
+		}
+		return nil
+	}(); err != nil {
+		return res, errors.Wrap(err, "validate")
+	}
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("updateUsers"),
+	}
+	ctx, span := c.cfg.Tracer.Start(ctx, "UpdateUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	defer func() {
+		if err != nil {
+			span.RecordError(err)
+			c.errors.Add(ctx, 1, otelAttrs...)
+		} else {
+			elapsedDuration := time.Since(startTime)
+			c.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+		}
+		span.End()
+	}()
+	c.requests.Add(ctx, 1, otelAttrs...)
+	var (
+		contentType string
+		reqBody     io.Reader
+	)
+	contentType = "application/json"
+	buf, err := encodeUpdateUsersRequestJSON(request, span)
+	if err != nil {
+		return res, err
+	}
+	defer jx.PutEncoder(buf)
+	reqBody = bytes.NewReader(buf.Bytes())
+
+	u := uri.Clone(c.serverURL)
+	u.Path += "/users/"
+	{
+		// Encode "id" parameter.
+		e := uri.NewPathEncoder(uri.PathEncoderConfig{
+			Param:   "id",
+			Style:   uri.PathStyleSimple,
+			Explode: false,
+		})
+		if err := func() error {
+			return e.EncodeValue(conv.IntToString(params.ID))
+		}(); err != nil {
+			return res, errors.Wrap(err, "encode path")
+		}
+		u.Path += e.Result()
+	}
+
+	r := ht.NewRequest(ctx, "PATCH", u, reqBody)
+	defer ht.PutRequest(r)
+
+	r.Header.Set("Content-Type", contentType)
+
+	resp, err := c.cfg.Client.Do(r)
+	if err != nil {
+		return res, errors.Wrap(err, "do request")
+	}
+	defer resp.Body.Close()
+
+	result, err := decodeUpdateUsersResponse(resp, span)
+	if err != nil {
+		return res, errors.Wrap(err, "decode response")
+	}
+
+	return result, nil
+}

ent/ogent/oas_defaults_gen.go

@@ -0,0 +1,71 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)

ent/ogent/oas_handlers_gen.go

@@ -0,0 +1,390 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+// HandleCreateUsersRequest handles createUsers operation.
+//
+// POST /users
+func (s *Server) handleCreateUsersRequest(args [0]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("createUsers"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "CreateUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	request, err := decodeCreateUsersRequest(r, span)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.CreateUsers(ctx, request)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeCreateUsersResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleDeleteUsersRequest handles deleteUsers operation.
+//
+// DELETE /users/{id}
+func (s *Server) handleDeleteUsersRequest(args [1]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("deleteUsers"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "DeleteUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeDeleteUsersParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.DeleteUsers(ctx, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeDeleteUsersResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleDrawDoneRequest handles drawDone operation.
+//
+// PUT /users/{id}/d
+func (s *Server) handleDrawDoneRequest(args [1]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("drawDone"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "DrawDone",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeDrawDoneParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.DrawDone(ctx, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeDrawDoneResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleDrawStartRequest handles drawStart operation.
+//
+// PATCH /users/{id}/start
+func (s *Server) handleDrawStartRequest(args [1]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("drawStart"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "DrawStart",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeDrawStartParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.DrawStart(ctx, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeDrawStartResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleListUsersRequest handles listUsers operation.
+//
+// GET /users
+func (s *Server) handleListUsersRequest(args [0]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("listUsers"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "ListUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeListUsersParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.ListUsers(ctx, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeListUsersResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleReadUsersRequest handles readUsers operation.
+//
+// GET /users/{id}
+func (s *Server) handleReadUsersRequest(args [1]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("readUsers"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "ReadUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeReadUsersParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.ReadUsers(ctx, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeReadUsersResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+// HandleUpdateUsersRequest handles updateUsers operation.
+//
+// PATCH /users/{id}
+func (s *Server) handleUpdateUsersRequest(args [1]string, w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	otelAttrs := []attribute.KeyValue{
+		otelogen.OperationID("updateUsers"),
+	}
+	ctx, span := s.cfg.Tracer.Start(r.Context(), "UpdateUsers",
+		trace.WithAttributes(otelAttrs...),
+		trace.WithSpanKind(trace.SpanKindServer),
+	)
+	s.requests.Add(ctx, 1, otelAttrs...)
+	defer span.End()
+
+	var err error
+	params, err := decodeUpdateUsersParams(args, r)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+	request, err := decodeUpdateUsersRequest(r, span)
+	if err != nil {
+		s.badRequest(ctx, w, span, otelAttrs, err)
+		return
+	}
+
+	response, err := s.h.UpdateUsers(ctx, request, params)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Internal")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		respondError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	if err := encodeUpdateUsersResponse(response, w, span); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "Response")
+		s.errors.Add(ctx, 1, otelAttrs...)
+		return
+	}
+	span.SetStatus(codes.Ok, "Ok")
+	elapsedDuration := time.Since(startTime)
+	s.duration.Record(ctx, elapsedDuration.Microseconds(), otelAttrs...)
+}
+
+func (s *Server) badRequest(ctx context.Context, w http.ResponseWriter, span trace.Span, otelAttrs []attribute.KeyValue, err error) {
+	span.RecordError(err)
+	span.SetStatus(codes.Error, "BadRequest")
+	s.errors.Add(ctx, 1, otelAttrs...)
+	respondError(w, http.StatusBadRequest, err)
+}
+
+func respondError(w http.ResponseWriter, code int, err error) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	data, writeErr := json.Marshal(struct {
+		ErrorMessage string `json:"error_message"`
+	}{
+		ErrorMessage: err.Error(),
+	})
+	if writeErr == nil {
+		w.Write(data)
+	}
+}

ent/ogent/oas_interfaces_gen.go

@@ -0,0 +1,22 @@
+// Code generated by ogen, DO NOT EDIT.
+package ogent
+
+type CreateUsersRes interface {
+	createUsersRes()
+}
+
+type DeleteUsersRes interface {
+	deleteUsersRes()
+}
+
+type ListUsersRes interface {
+	listUsersRes()
+}
+
+type ReadUsersRes interface {
+	readUsersRes()
+}
+
+type UpdateUsersRes interface {
+	updateUsersRes()
+}

ent/ogent/oas_param_dec_gen.go

@@ -0,0 +1,339 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func decodeDeleteUsersParams(args [1]string, r *http.Request) (DeleteUsersParams, error) {
+	var (
+		params DeleteUsersParams
+	)
+	// Decode path: id.
+	{
+		param := args[0]
+		if len(param) > 0 {
+			d := uri.NewPathDecoder(uri.PathDecoderConfig{
+				Param:   "id",
+				Value:   param,
+				Style:   uri.PathStyleSimple,
+				Explode: false,
+			})
+
+			if err := func() error {
+				s, err := d.DecodeValue()
+				if err != nil {
+					return err
+				}
+
+				c, err := conv.ToInt(s)
+				if err != nil {
+					return err
+				}
+
+				params.ID = c
+				return nil
+			}(); err != nil {
+				return params, err
+			}
+		} else {
+			return params, errors.New("path: id: not specified")
+		}
+	}
+	return params, nil
+}
+
+func decodeDrawDoneParams(args [1]string, r *http.Request) (DrawDoneParams, error) {
+	var (
+		params DrawDoneParams
+	)
+	// Decode path: id.
+	{
+		param := args[0]
+		if len(param) > 0 {
+			d := uri.NewPathDecoder(uri.PathDecoderConfig{
+				Param:   "id",
+				Value:   param,
+				Style:   uri.PathStyleSimple,
+				Explode: false,
+			})
+
+			if err := func() error {
+				s, err := d.DecodeValue()
+				if err != nil {
+					return err
+				}
+
+				c, err := conv.ToInt(s)
+				if err != nil {
+					return err
+				}
+
+				params.ID = c
+				return nil
+			}(); err != nil {
+				return params, err
+			}
+		} else {
+			return params, errors.New("path: id: not specified")
+		}
+	}
+	return params, nil
+}
+
+func decodeDrawStartParams(args [1]string, r *http.Request) (DrawStartParams, error) {
+	var (
+		params DrawStartParams
+	)
+	// Decode path: id.
+	{
+		param := args[0]
+		if len(param) > 0 {
+			d := uri.NewPathDecoder(uri.PathDecoderConfig{
+				Param:   "id",
+				Value:   param,
+				Style:   uri.PathStyleSimple,
+				Explode: false,
+			})
+
+			if err := func() error {
+				s, err := d.DecodeValue()
+				if err != nil {
+					return err
+				}
+
+				c, err := conv.ToInt(s)
+				if err != nil {
+					return err
+				}
+
+				params.ID = c
+				return nil
+			}(); err != nil {
+				return params, err
+			}
+		} else {
+			return params, errors.New("path: id: not specified")
+		}
+	}
+	return params, nil
+}
+
+func decodeListUsersParams(args [0]string, r *http.Request) (ListUsersParams, error) {
+	var (
+		params    ListUsersParams
+		queryArgs = r.URL.Query()
+	)
+	// Decode query: page.
+	{
+		values, ok := queryArgs["page"]
+		if ok {
+			d := uri.NewQueryDecoder(uri.QueryDecoderConfig{
+				Values:  values,
+				Style:   uri.QueryStyleForm,
+				Explode: true,
+			})
+
+			if err := func() error {
+				var paramsDotPageVal int
+				if err := func() error {
+					s, err := d.DecodeValue()
+					if err != nil {
+						return err
+					}
+
+					c, err := conv.ToInt(s)
+					if err != nil {
+						return err
+					}
+
+					paramsDotPageVal = c
+					return nil
+				}(); err != nil {
+					return err
+				}
+				params.Page.SetTo(paramsDotPageVal)
+				return nil
+			}(); err != nil {
+				return params, errors.Wrap(err, "query: page: parse")
+			}
+		}
+	}
+	// Decode query: itemsPerPage.
+	{
+		values, ok := queryArgs["itemsPerPage"]
+		if ok {
+			d := uri.NewQueryDecoder(uri.QueryDecoderConfig{
+				Values:  values,
+				Style:   uri.QueryStyleForm,
+				Explode: true,
+			})
+
+			if err := func() error {
+				var paramsDotItemsPerPageVal int
+				if err := func() error {
+					s, err := d.DecodeValue()
+					if err != nil {
+						return err
+					}
+
+					c, err := conv.ToInt(s)
+					if err != nil {
+						return err
+					}
+
+					paramsDotItemsPerPageVal = c
+					return nil
+				}(); err != nil {
+					return err
+				}
+				params.ItemsPerPage.SetTo(paramsDotItemsPerPageVal)
+				return nil
+			}(); err != nil {
+				return params, errors.Wrap(err, "query: itemsPerPage: parse")
+			}
+		}
+	}
+	return params, nil
+}
+
+func decodeReadUsersParams(args [1]string, r *http.Request) (ReadUsersParams, error) {
+	var (
+		params ReadUsersParams
+	)
+	// Decode path: id.
+	{
+		param := args[0]
+		if len(param) > 0 {
+			d := uri.NewPathDecoder(uri.PathDecoderConfig{
+				Param:   "id",
+				Value:   param,
+				Style:   uri.PathStyleSimple,
+				Explode: false,
+			})
+
+			if err := func() error {
+				s, err := d.DecodeValue()
+				if err != nil {
+					return err
+				}
+
+				c, err := conv.ToInt(s)
+				if err != nil {
+					return err
+				}
+
+				params.ID = c
+				return nil
+			}(); err != nil {
+				return params, err
+			}
+		} else {
+			return params, errors.New("path: id: not specified")
+		}
+	}
+	return params, nil
+}
+
+func decodeUpdateUsersParams(args [1]string, r *http.Request) (UpdateUsersParams, error) {
+	var (
+		params UpdateUsersParams
+	)
+	// Decode path: id.
+	{
+		param := args[0]
+		if len(param) > 0 {
+			d := uri.NewPathDecoder(uri.PathDecoderConfig{
+				Param:   "id",
+				Value:   param,
+				Style:   uri.PathStyleSimple,
+				Explode: false,
+			})
+
+			if err := func() error {
+				s, err := d.DecodeValue()
+				if err != nil {
+					return err
+				}
+
+				c, err := conv.ToInt(s)
+				if err != nil {
+					return err
+				}
+
+				params.ID = c
+				return nil
+			}(); err != nil {
+				return params, err
+			}
+		} else {
+			return params, errors.New("path: id: not specified")
+		}
+	}
+	return params, nil
+}

ent/ogent/oas_param_gen.go

@@ -0,0 +1,101 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+type DeleteUsersParams struct {
+	// ID of the Users.
+	ID int
+}
+
+type DrawDoneParams struct {
+	ID int
+}
+
+type DrawStartParams struct {
+	ID int
+}
+
+type ListUsersParams struct {
+	// What page to render.
+	Page OptInt
+	// Item count to render per page.
+	ItemsPerPage OptInt
+}
+
+type ReadUsersParams struct {
+	// ID of the Users.
+	ID int
+}
+
+type UpdateUsersParams struct {
+	// ID of the Users.
+	ID int
+}

ent/ogent/oas_req_dec_gen.go

@@ -0,0 +1,159 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func decodeCreateUsersRequest(r *http.Request, span trace.Span) (req CreateUsersReq, err error) {
+	switch ct := r.Header.Get("Content-Type"); ct {
+	case "application/json":
+		if r.ContentLength == 0 {
+			return req, validate.ErrBodyRequired
+		}
+
+		var request CreateUsersReq
+		buf := getBuf()
+		defer putBuf(buf)
+		written, err := io.Copy(buf, r.Body)
+		if err != nil {
+			return req, err
+		}
+
+		if written == 0 {
+			return req, validate.ErrBodyRequired
+		}
+
+		d := jx.GetDecoder()
+		defer jx.PutDecoder(d)
+		d.ResetBytes(buf.Bytes())
+		if err := func() error {
+			if err := request.Decode(d); err != nil {
+				return err
+			}
+			return nil
+		}(); err != nil {
+			return req, errors.Wrap(err, "decode CreateUsers:application/json request")
+		}
+		if err := func() error {
+			if err := request.Validate(); err != nil {
+				return err
+			}
+			return nil
+		}(); err != nil {
+			return req, errors.Wrap(err, "validate CreateUsers request")
+		}
+		return request, nil
+	default:
+		return req, validate.InvalidContentType(ct)
+	}
+}
+
+func decodeUpdateUsersRequest(r *http.Request, span trace.Span) (req UpdateUsersReq, err error) {
+	switch ct := r.Header.Get("Content-Type"); ct {
+	case "application/json":
+		if r.ContentLength == 0 {
+			return req, validate.ErrBodyRequired
+		}
+
+		var request UpdateUsersReq
+		buf := getBuf()
+		defer putBuf(buf)
+		written, err := io.Copy(buf, r.Body)
+		if err != nil {
+			return req, err
+		}
+
+		if written == 0 {
+			return req, validate.ErrBodyRequired
+		}
+
+		d := jx.GetDecoder()
+		defer jx.PutDecoder(d)
+		d.ResetBytes(buf.Bytes())
+		if err := func() error {
+			if err := request.Decode(d); err != nil {
+				return err
+			}
+			return nil
+		}(); err != nil {
+			return req, errors.Wrap(err, "decode UpdateUsers:application/json request")
+		}
+		if err := func() error {
+			if err := request.Validate(); err != nil {
+				return err
+			}
+			return nil
+		}(); err != nil {
+			return req, errors.Wrap(err, "validate UpdateUsers request")
+		}
+		return request, nil
+	default:
+		return req, validate.InvalidContentType(ct)
+	}
+}

ent/ogent/oas_req_enc_gen.go

@@ -0,0 +1,87 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func encodeCreateUsersRequestJSON(req CreateUsersReq, span trace.Span) (data *jx.Encoder, err error) {
+	e := jx.GetEncoder()
+
+	req.Encode(e)
+
+	return e, nil
+}
+
+func encodeUpdateUsersRequestJSON(req UpdateUsersReq, span trace.Span) (data *jx.Encoder, err error) {
+	e := jx.GetEncoder()
+
+	req.Encode(e)
+
+	return e, nil
+}

ent/ogent/oas_res_dec_gen.go

@@ -0,0 +1,747 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func decodeCreateUsersResponse(resp *http.Response, span trace.Span) (res CreateUsersRes, err error) {
+	switch resp.StatusCode {
+	case 200:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response UsersCreate
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 400:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R400
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 409:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R409
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 500:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R500
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeDeleteUsersResponse(resp *http.Response, span trace.Span) (res DeleteUsersRes, err error) {
+	switch resp.StatusCode {
+	case 204:
+		return &DeleteUsersNoContent{}, nil
+	case 400:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R400
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 404:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R404
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 409:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R409
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 500:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R500
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeDrawDoneResponse(resp *http.Response, span trace.Span) (res DrawDoneNoContent, err error) {
+	switch resp.StatusCode {
+	case 204:
+		return DrawDoneNoContent{}, nil
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeDrawStartResponse(resp *http.Response, span trace.Span) (res DrawStartNoContent, err error) {
+	switch resp.StatusCode {
+	case 204:
+		return DrawStartNoContent{}, nil
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeListUsersResponse(resp *http.Response, span trace.Span) (res ListUsersRes, err error) {
+	switch resp.StatusCode {
+	case 200:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response ListUsersOKApplicationJSON
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 400:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R400
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 404:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R404
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 409:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R409
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 500:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R500
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeReadUsersResponse(resp *http.Response, span trace.Span) (res ReadUsersRes, err error) {
+	switch resp.StatusCode {
+	case 200:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response UsersRead
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 400:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R400
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 404:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R404
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 409:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R409
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 500:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R500
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}
+
+func decodeUpdateUsersResponse(resp *http.Response, span trace.Span) (res UpdateUsersRes, err error) {
+	switch resp.StatusCode {
+	case 200:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response UsersUpdate
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 400:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R400
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 404:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R404
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 409:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R409
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	case 500:
+		switch ct := resp.Header.Get("Content-Type"); ct {
+		case "application/json":
+			buf := getBuf()
+			defer putBuf(buf)
+			if _, err := io.Copy(buf, resp.Body); err != nil {
+				return res, err
+			}
+
+			d := jx.GetDecoder()
+			defer jx.PutDecoder(d)
+			d.ResetBytes(buf.Bytes())
+
+			var response R500
+			if err := func() error {
+				if err := response.Decode(d); err != nil {
+					return err
+				}
+				return nil
+			}(); err != nil {
+				return res, err
+			}
+
+			return &response, nil
+		default:
+			return res, validate.InvalidContentType(ct)
+		}
+	default:
+		return res, validate.UnexpectedStatusCode(resp.StatusCode)
+	}
+}

ent/ogent/oas_res_enc_gen.go

@@ -0,0 +1,395 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func encodeCreateUsersResponse(response CreateUsersRes, w http.ResponseWriter, span trace.Span) error {
+	switch response := response.(type) {
+	case *UsersCreate:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(200)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R400:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(400)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R409:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(409)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R500:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(500)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	default:
+		return errors.Errorf("/users"+`: unexpected response type: %T`, response)
+	}
+}
+
+func encodeDeleteUsersResponse(response DeleteUsersRes, w http.ResponseWriter, span trace.Span) error {
+	switch response := response.(type) {
+	case *DeleteUsersNoContent:
+		w.WriteHeader(204)
+		return nil
+	case *R400:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(400)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R404:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(404)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R409:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(409)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R500:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(500)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	default:
+		return errors.Errorf("/users/{id}"+`: unexpected response type: %T`, response)
+	}
+}
+
+func encodeDrawDoneResponse(response DrawDoneNoContent, w http.ResponseWriter, span trace.Span) error {
+	w.WriteHeader(204)
+	return nil
+}
+
+func encodeDrawStartResponse(response DrawStartNoContent, w http.ResponseWriter, span trace.Span) error {
+	w.WriteHeader(204)
+	return nil
+}
+
+func encodeListUsersResponse(response ListUsersRes, w http.ResponseWriter, span trace.Span) error {
+	switch response := response.(type) {
+	case *ListUsersOKApplicationJSON:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(200)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R400:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(400)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R404:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(404)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R409:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(409)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R500:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(500)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	default:
+		return errors.Errorf("/users"+`: unexpected response type: %T`, response)
+	}
+}
+
+func encodeReadUsersResponse(response ReadUsersRes, w http.ResponseWriter, span trace.Span) error {
+	switch response := response.(type) {
+	case *UsersRead:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(200)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R400:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(400)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R404:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(404)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R409:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(409)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R500:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(500)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	default:
+		return errors.Errorf("/users/{id}"+`: unexpected response type: %T`, response)
+	}
+}
+
+func encodeUpdateUsersResponse(response UpdateUsersRes, w http.ResponseWriter, span trace.Span) error {
+	switch response := response.(type) {
+	case *UsersUpdate:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(200)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R400:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(400)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R404:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(404)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R409:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(409)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	case *R500:
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(500)
+		e := jx.GetEncoder()
+		defer jx.PutEncoder(e)
+
+		response.Encode(e)
+		if _, err := e.WriteTo(w); err != nil {
+			return errors.Wrap(err, "write")
+		}
+
+		return nil
+	default:
+		return errors.Errorf("/users/{id}"+`: unexpected response type: %T`, response)
+	}
+}

ent/ogent/oas_router_gen.go

@@ -0,0 +1,467 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+func (s *Server) notFound(w http.ResponseWriter, r *http.Request) {
+	s.cfg.NotFound(w, r)
+}
+
+// ServeHTTP serves http request as defined by OpenAPI v3 specification,
+// calling handler that matches the path or returning not found error.
+func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	elem := r.URL.Path
+	if len(elem) == 0 {
+		s.notFound(w, r)
+		return
+	}
+	args := [1]string{}
+	// Static code generated router with unwrapped path search.
+	switch r.Method {
+	case "DELETE":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Leaf parameter
+			args[0] = elem
+			elem = ""
+
+			if len(elem) == 0 {
+				// Leaf: DeleteUsers
+				s.handleDeleteUsersRequest([1]string{
+					args[0],
+				}, w, r)
+
+				return
+			}
+		}
+	case "GET":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users"
+			if l := len("/users"); len(elem) >= l && elem[0:l] == "/users" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			if len(elem) == 0 {
+				s.handleListUsersRequest([0]string{}, w, r)
+
+				return
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/"
+				if l := len("/"); len(elem) >= l && elem[0:l] == "/" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				// Param: "id"
+				// Leaf parameter
+				args[0] = elem
+				elem = ""
+
+				if len(elem) == 0 {
+					// Leaf: ReadUsers
+					s.handleReadUsersRequest([1]string{
+						args[0],
+					}, w, r)
+
+					return
+				}
+			}
+		}
+	case "PATCH":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Match until "/"
+			idx := strings.IndexByte(elem, '/')
+			if idx < 0 {
+				idx = len(elem)
+			}
+			args[0] = elem[:idx]
+			elem = elem[idx:]
+
+			if len(elem) == 0 {
+				s.handleUpdateUsersRequest([1]string{
+					args[0],
+				}, w, r)
+
+				return
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/start"
+				if l := len("/start"); len(elem) >= l && elem[0:l] == "/start" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				if len(elem) == 0 {
+					// Leaf: DrawStart
+					s.handleDrawStartRequest([1]string{
+						args[0],
+					}, w, r)
+
+					return
+				}
+			}
+		}
+	case "POST":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users"
+			if l := len("/users"); len(elem) >= l && elem[0:l] == "/users" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			if len(elem) == 0 {
+				// Leaf: CreateUsers
+				s.handleCreateUsersRequest([0]string{}, w, r)
+
+				return
+			}
+		}
+	case "PUT":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Match until "/"
+			idx := strings.IndexByte(elem, '/')
+			if idx < 0 {
+				idx = len(elem)
+			}
+			args[0] = elem[:idx]
+			elem = elem[idx:]
+
+			if len(elem) == 0 {
+				break
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/d"
+				if l := len("/d"); len(elem) >= l && elem[0:l] == "/d" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				if len(elem) == 0 {
+					// Leaf: DrawDone
+					s.handleDrawDoneRequest([1]string{
+						args[0],
+					}, w, r)
+
+					return
+				}
+			}
+		}
+	}
+	s.notFound(w, r)
+}
+
+// Route is route object.
+type Route struct {
+	name  string
+	count int
+	args  [1]string
+}
+
+// OperationID returns OpenAPI operationId.
+func (r Route) OperationID() string {
+	return r.name
+}
+
+// Args returns parsed arguments.
+func (r Route) Args() []string {
+	return r.args[:r.count]
+}
+
+// FindRoute finds Route for given method and path.
+func (s *Server) FindRoute(method, path string) (r Route, _ bool) {
+	var (
+		args = [1]string{}
+		elem = path
+	)
+	r.args = args
+	if elem == "" {
+		return r, false
+	}
+
+	// Static code generated router with unwrapped path search.
+	switch method {
+	case "DELETE":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Leaf parameter
+			args[0] = elem
+			elem = ""
+
+			if len(elem) == 0 {
+				// Leaf: DeleteUsers
+				r.name = "DeleteUsers"
+				r.args = args
+				r.count = 1
+				return r, true
+			}
+		}
+	case "GET":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users"
+			if l := len("/users"); len(elem) >= l && elem[0:l] == "/users" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			if len(elem) == 0 {
+				r.name = "ListUsers"
+				r.args = args
+				r.count = 0
+				return r, true
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/"
+				if l := len("/"); len(elem) >= l && elem[0:l] == "/" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				// Param: "id"
+				// Leaf parameter
+				args[0] = elem
+				elem = ""
+
+				if len(elem) == 0 {
+					// Leaf: ReadUsers
+					r.name = "ReadUsers"
+					r.args = args
+					r.count = 1
+					return r, true
+				}
+			}
+		}
+	case "PATCH":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Match until "/"
+			idx := strings.IndexByte(elem, '/')
+			if idx < 0 {
+				idx = len(elem)
+			}
+			args[0] = elem[:idx]
+			elem = elem[idx:]
+
+			if len(elem) == 0 {
+				r.name = "UpdateUsers"
+				r.args = args
+				r.count = 1
+				return r, true
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/start"
+				if l := len("/start"); len(elem) >= l && elem[0:l] == "/start" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				if len(elem) == 0 {
+					// Leaf: DrawStart
+					r.name = "DrawStart"
+					r.args = args
+					r.count = 1
+					return r, true
+				}
+			}
+		}
+	case "POST":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users"
+			if l := len("/users"); len(elem) >= l && elem[0:l] == "/users" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			if len(elem) == 0 {
+				// Leaf: CreateUsers
+				r.name = "CreateUsers"
+				r.args = args
+				r.count = 0
+				return r, true
+			}
+		}
+	case "PUT":
+		if len(elem) == 0 {
+			break
+		}
+		switch elem[0] {
+		case '/': // Prefix: "/users/"
+			if l := len("/users/"); len(elem) >= l && elem[0:l] == "/users/" {
+				elem = elem[l:]
+			} else {
+				break
+			}
+
+			// Param: "id"
+			// Match until "/"
+			idx := strings.IndexByte(elem, '/')
+			if idx < 0 {
+				idx = len(elem)
+			}
+			args[0] = elem[:idx]
+			elem = elem[idx:]
+
+			if len(elem) == 0 {
+				break
+			}
+			switch elem[0] {
+			case '/': // Prefix: "/d"
+				if l := len("/d"); len(elem) >= l && elem[0:l] == "/d" {
+					elem = elem[l:]
+				} else {
+					break
+				}
+
+				if len(elem) == 0 {
+					// Leaf: DrawDone
+					r.name = "DrawDone"
+					r.args = args
+					r.count = 1
+					return r, true
+				}
+			}
+		}
+	}
+	return r, false
+}

ent/ogent/oas_schemas_gen.go

@@ -0,0 +1,497 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+type CreateUsersReq struct {
+	User       string      "json:\"user\""
+	Chara      OptString   "json:\"chara\""
+	Skill      OptInt      "json:\"skill\""
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Status     OptString   "json:\"status\""
+	Comment    OptString   "json:\"comment\""
+	CreatedAt  OptDateTime "json:\"created_at\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+	URL        OptString   "json:\"url\""
+}
+
+// DeleteUsersNoContent is response for DeleteUsers operation.
+type DeleteUsersNoContent struct{}
+
+func (*DeleteUsersNoContent) deleteUsersRes() {}
+
+// DrawDoneNoContent is response for DrawDone operation.
+type DrawDoneNoContent struct{}
+
+// DrawStartNoContent is response for DrawStart operation.
+type DrawStartNoContent struct{}
+
+type ListUsersOKApplicationJSON []UsersList
+
+func (ListUsersOKApplicationJSON) listUsersRes() {}
+
+// NewOptBool returns new OptBool with value set to v.
+func NewOptBool(v bool) OptBool {
+	return OptBool{
+		Value: v,
+		Set:   true,
+	}
+}
+
+// OptBool is optional bool.
+type OptBool struct {
+	Value bool
+	Set   bool
+}
+
+// IsSet returns true if OptBool was set.
+func (o OptBool) IsSet() bool { return o.Set }
+
+// Reset unsets value.
+func (o *OptBool) Reset() {
+	var v bool
+	o.Value = v
+	o.Set = false
+}
+
+// SetTo sets value to v.
+func (o *OptBool) SetTo(v bool) {
+	o.Set = true
+	o.Value = v
+}
+
+// Get returns value and boolean that denotes whether value was set.
+func (o OptBool) Get() (v bool, ok bool) {
+	if !o.Set {
+		return v, false
+	}
+	return o.Value, true
+}
+
+// Or returns value if set, or given parameter if does not.
+func (o OptBool) Or(d bool) bool {
+	if v, ok := o.Get(); ok {
+		return v
+	}
+	return d
+}
+
+// NewOptDateTime returns new OptDateTime with value set to v.
+func NewOptDateTime(v time.Time) OptDateTime {
+	return OptDateTime{
+		Value: v,
+		Set:   true,
+	}
+}
+
+// OptDateTime is optional time.Time.
+type OptDateTime struct {
+	Value time.Time
+	Set   bool
+}
+
+// IsSet returns true if OptDateTime was set.
+func (o OptDateTime) IsSet() bool { return o.Set }
+
+// Reset unsets value.
+func (o *OptDateTime) Reset() {
+	var v time.Time
+	o.Value = v
+	o.Set = false
+}
+
+// SetTo sets value to v.
+func (o *OptDateTime) SetTo(v time.Time) {
+	o.Set = true
+	o.Value = v
+}
+
+// Get returns value and boolean that denotes whether value was set.
+func (o OptDateTime) Get() (v time.Time, ok bool) {
+	if !o.Set {
+		return v, false
+	}
+	return o.Value, true
+}
+
+// Or returns value if set, or given parameter if does not.
+func (o OptDateTime) Or(d time.Time) time.Time {
+	if v, ok := o.Get(); ok {
+		return v
+	}
+	return d
+}
+
+// NewOptFloat64 returns new OptFloat64 with value set to v.
+func NewOptFloat64(v float64) OptFloat64 {
+	return OptFloat64{
+		Value: v,
+		Set:   true,
+	}
+}
+
+// OptFloat64 is optional float64.
+type OptFloat64 struct {
+	Value float64
+	Set   bool
+}
+
+// IsSet returns true if OptFloat64 was set.
+func (o OptFloat64) IsSet() bool { return o.Set }
+
+// Reset unsets value.
+func (o *OptFloat64) Reset() {
+	var v float64
+	o.Value = v
+	o.Set = false
+}
+
+// SetTo sets value to v.
+func (o *OptFloat64) SetTo(v float64) {
+	o.Set = true
+	o.Value = v
+}
+
+// Get returns value and boolean that denotes whether value was set.
+func (o OptFloat64) Get() (v float64, ok bool) {
+	if !o.Set {
+		return v, false
+	}
+	return o.Value, true
+}
+
+// Or returns value if set, or given parameter if does not.
+func (o OptFloat64) Or(d float64) float64 {
+	if v, ok := o.Get(); ok {
+		return v
+	}
+	return d
+}
+
+// NewOptInt returns new OptInt with value set to v.
+func NewOptInt(v int) OptInt {
+	return OptInt{
+		Value: v,
+		Set:   true,
+	}
+}
+
+// OptInt is optional int.
+type OptInt struct {
+	Value int
+	Set   bool
+}
+
+// IsSet returns true if OptInt was set.
+func (o OptInt) IsSet() bool { return o.Set }
+
+// Reset unsets value.
+func (o *OptInt) Reset() {
+	var v int
+	o.Value = v
+	o.Set = false
+}
+
+// SetTo sets value to v.
+func (o *OptInt) SetTo(v int) {
+	o.Set = true
+	o.Value = v
+}
+
+// Get returns value and boolean that denotes whether value was set.
+func (o OptInt) Get() (v int, ok bool) {
+	if !o.Set {
+		return v, false
+	}
+	return o.Value, true
+}
+
+// Or returns value if set, or given parameter if does not.
+func (o OptInt) Or(d int) int {
+	if v, ok := o.Get(); ok {
+		return v
+	}
+	return d
+}
+
+// NewOptString returns new OptString with value set to v.
+func NewOptString(v string) OptString {
+	return OptString{
+		Value: v,
+		Set:   true,
+	}
+}
+
+// OptString is optional string.
+type OptString struct {
+	Value string
+	Set   bool
+}
+
+// IsSet returns true if OptString was set.
+func (o OptString) IsSet() bool { return o.Set }
+
+// Reset unsets value.
+func (o *OptString) Reset() {
+	var v string
+	o.Value = v
+	o.Set = false
+}
+
+// SetTo sets value to v.
+func (o *OptString) SetTo(v string) {
+	o.Set = true
+	o.Value = v
+}
+
+// Get returns value and boolean that denotes whether value was set.
+func (o OptString) Get() (v string, ok bool) {
+	if !o.Set {
+		return v, false
+	}
+	return o.Value, true
+}
+
+// Or returns value if set, or given parameter if does not.
+func (o OptString) Or(d string) string {
+	if v, ok := o.Get(); ok {
+		return v
+	}
+	return d
+}
+
+type R400 struct {
+	Code   int    "json:\"code\""
+	Status string "json:\"status\""
+	Errors jx.Raw "json:\"errors\""
+}
+
+func (*R400) createUsersRes() {}
+func (*R400) deleteUsersRes() {}
+func (*R400) listUsersRes()   {}
+func (*R400) readUsersRes()   {}
+func (*R400) updateUsersRes() {}
+
+type R404 struct {
+	Code   int    "json:\"code\""
+	Status string "json:\"status\""
+	Errors jx.Raw "json:\"errors\""
+}
+
+func (*R404) deleteUsersRes() {}
+func (*R404) listUsersRes()   {}
+func (*R404) readUsersRes()   {}
+func (*R404) updateUsersRes() {}
+
+type R409 struct {
+	Code   int    "json:\"code\""
+	Status string "json:\"status\""
+	Errors jx.Raw "json:\"errors\""
+}
+
+func (*R409) createUsersRes() {}
+func (*R409) deleteUsersRes() {}
+func (*R409) listUsersRes()   {}
+func (*R409) readUsersRes()   {}
+func (*R409) updateUsersRes() {}
+
+type R500 struct {
+	Code   int    "json:\"code\""
+	Status string "json:\"status\""
+	Errors jx.Raw "json:\"errors\""
+}
+
+func (*R500) createUsersRes() {}
+func (*R500) deleteUsersRes() {}
+func (*R500) listUsersRes()   {}
+func (*R500) readUsersRes()   {}
+func (*R500) updateUsersRes() {}
+
+type UpdateUsersReq struct {
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Comment    OptString   "json:\"comment\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+}
+
+// Ref: #/components/schemas/UsersCreate
+type UsersCreate struct {
+	ID         int         "json:\"id\""
+	User       string      "json:\"user\""
+	Chara      OptString   "json:\"chara\""
+	Skill      OptInt      "json:\"skill\""
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Status     OptString   "json:\"status\""
+	Comment    OptString   "json:\"comment\""
+	CreatedAt  OptDateTime "json:\"created_at\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+	URL        OptString   "json:\"url\""
+}
+
+func (*UsersCreate) createUsersRes() {}
+
+// Ref: #/components/schemas/UsersList
+type UsersList struct {
+	ID         int         "json:\"id\""
+	User       string      "json:\"user\""
+	Chara      OptString   "json:\"chara\""
+	Skill      OptInt      "json:\"skill\""
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Status     OptString   "json:\"status\""
+	Comment    OptString   "json:\"comment\""
+	CreatedAt  OptDateTime "json:\"created_at\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+	URL        OptString   "json:\"url\""
+}
+
+// Ref: #/components/schemas/UsersRead
+type UsersRead struct {
+	ID         int         "json:\"id\""
+	User       string      "json:\"user\""
+	Chara      OptString   "json:\"chara\""
+	Skill      OptInt      "json:\"skill\""
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Status     OptString   "json:\"status\""
+	Comment    OptString   "json:\"comment\""
+	CreatedAt  OptDateTime "json:\"created_at\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+	URL        OptString   "json:\"url\""
+}
+
+func (*UsersRead) readUsersRes() {}
+
+// Ref: #/components/schemas/UsersUpdate
+type UsersUpdate struct {
+	ID         int         "json:\"id\""
+	User       string      "json:\"user\""
+	Chara      OptString   "json:\"chara\""
+	Skill      OptInt      "json:\"skill\""
+	Hp         OptInt      "json:\"hp\""
+	Attack     OptInt      "json:\"attack\""
+	Defense    OptInt      "json:\"defense\""
+	Critical   OptInt      "json:\"critical\""
+	Battle     OptInt      "json:\"battle\""
+	Win        OptInt      "json:\"win\""
+	Day        OptInt      "json:\"day\""
+	Percentage OptFloat64  "json:\"percentage\""
+	Limit      OptBool     "json:\"limit\""
+	Status     OptString   "json:\"status\""
+	Comment    OptString   "json:\"comment\""
+	CreatedAt  OptDateTime "json:\"created_at\""
+	Next       OptString   "json:\"next\""
+	UpdatedAt  OptDateTime "json:\"updated_at\""
+	URL        OptString   "json:\"url\""
+}
+
+func (*UsersUpdate) updateUsersRes() {}

ent/ogent/oas_security_gen.go

@@ -0,0 +1,71 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)

ent/ogent/oas_server_gen.go

@@ -0,0 +1,142 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+// Handler handles operations described by OpenAPI v3 specification.
+type Handler interface {
+	// CreateUsers implements createUsers operation.
+	//
+	// Creates a new Users and persists it to storage.
+	//
+	// POST /users
+	CreateUsers(ctx context.Context, req CreateUsersReq) (CreateUsersRes, error)
+	// DeleteUsers implements deleteUsers operation.
+	//
+	// Deletes the Users with the requested ID.
+	//
+	// DELETE /users/{id}
+	DeleteUsers(ctx context.Context, params DeleteUsersParams) (DeleteUsersRes, error)
+	// DrawDone implements drawDone operation.
+	//
+	// PUT /users/{id}/d
+	DrawDone(ctx context.Context, params DrawDoneParams) (DrawDoneNoContent, error)
+	// DrawStart implements drawStart operation.
+	//
+	// PATCH /users/{id}/start
+	DrawStart(ctx context.Context, params DrawStartParams) (DrawStartNoContent, error)
+	// ListUsers implements listUsers operation.
+	//
+	// List Users.
+	//
+	// GET /users
+	ListUsers(ctx context.Context, params ListUsersParams) (ListUsersRes, error)
+	// ReadUsers implements readUsers operation.
+	//
+	// Finds the Users with the requested ID and returns it.
+	//
+	// GET /users/{id}
+	ReadUsers(ctx context.Context, params ReadUsersParams) (ReadUsersRes, error)
+	// UpdateUsers implements updateUsers operation.
+	//
+	// Updates a Users and persists changes to storage.
+	//
+	// PATCH /users/{id}
+	UpdateUsers(ctx context.Context, req UpdateUsersReq, params UpdateUsersParams) (UpdateUsersRes, error)
+}
+
+// Server implements http server based on OpenAPI v3 specification and
+// calls Handler to handle requests.
+type Server struct {
+	h   Handler
+	cfg config
+
+	requests metric.Int64Counter
+	errors   metric.Int64Counter
+	duration metric.Int64Histogram
+}
+
+func NewServer(h Handler, opts ...Option) (*Server, error) {
+	s := &Server{
+		h:   h,
+		cfg: newConfig(opts...),
+	}
+	var err error
+	if s.requests, err = s.cfg.Meter.NewInt64Counter(otelogen.ServerRequestCount); err != nil {
+		return nil, err
+	}
+	if s.errors, err = s.cfg.Meter.NewInt64Counter(otelogen.ServerErrorsCount); err != nil {
+		return nil, err
+	}
+	if s.duration, err = s.cfg.Meter.NewInt64Histogram(otelogen.ServerDuration); err != nil {
+		return nil, err
+	}
+	return s, nil
+}

ent/ogent/oas_unimplemented_gen.go

@@ -0,0 +1,135 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"math/bits"
+	"net"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/go-faster/jx"
+	"github.com/google/uuid"
+	"github.com/ogen-go/ogen/conv"
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/json"
+	"github.com/ogen-go/ogen/otelogen"
+	"github.com/ogen-go/ogen/uri"
+	"github.com/ogen-go/ogen/validate"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = sort.Ints
+	_ = http.MethodGet
+	_ = io.Copy
+	_ = json.Marshal
+	_ = bytes.NewReader
+	_ = strconv.ParseInt
+	_ = time.Time{}
+	_ = conv.ToInt32
+	_ = uuid.UUID{}
+	_ = uri.PathEncoder{}
+	_ = url.URL{}
+	_ = math.Mod
+	_ = bits.LeadingZeros64
+	_ = big.Rat{}
+	_ = validate.Int{}
+	_ = ht.NewRequest
+	_ = net.IP{}
+	_ = otelogen.Version
+	_ = attribute.KeyValue{}
+	_ = trace.TraceIDFromHex
+	_ = otel.GetTracerProvider
+	_ = metric.NewNoopMeterProvider
+	_ = regexp.MustCompile
+	_ = jx.Null
+	_ = sync.Pool{}
+	_ = codes.Unset
+)
+
+var _ Handler = UnimplementedHandler{}
+
+// UnimplementedHandler is no-op Handler which returns http.ErrNotImplemented.
+type UnimplementedHandler struct{}
+
+// CreateUsers implements createUsers operation.
+//
+// Creates a new Users and persists it to storage.
+//
+// POST /users
+func (UnimplementedHandler) CreateUsers(ctx context.Context, req CreateUsersReq) (r CreateUsersRes, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// DeleteUsers implements deleteUsers operation.
+//
+// Deletes the Users with the requested ID.
+//
+// DELETE /users/{id}
+func (UnimplementedHandler) DeleteUsers(ctx context.Context, params DeleteUsersParams) (r DeleteUsersRes, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// DrawDone implements drawDone operation.
+//
+// PUT /users/{id}/d
+func (UnimplementedHandler) DrawDone(ctx context.Context, params DrawDoneParams) (r DrawDoneNoContent, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// DrawStart implements drawStart operation.
+//
+// PATCH /users/{id}/start
+func (UnimplementedHandler) DrawStart(ctx context.Context, params DrawStartParams) (r DrawStartNoContent, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// ListUsers implements listUsers operation.
+//
+// List Users.
+//
+// GET /users
+func (UnimplementedHandler) ListUsers(ctx context.Context, params ListUsersParams) (r ListUsersRes, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// ReadUsers implements readUsers operation.
+//
+// Finds the Users with the requested ID and returns it.
+//
+// GET /users/{id}
+func (UnimplementedHandler) ReadUsers(ctx context.Context, params ReadUsersParams) (r ReadUsersRes, _ error) {
+	return r, ht.ErrNotImplemented
+}
+
+// UpdateUsers implements updateUsers operation.
+//
+// Updates a Users and persists changes to storage.
+//
+// PATCH /users/{id}
+func (UnimplementedHandler) UpdateUsers(ctx context.Context, req UpdateUsersReq, params UpdateUsersParams) (r UpdateUsersRes, _ error) {
+	return r, ht.ErrNotImplemented
+}

ent/ogent/oas_validators_gen.go

@@ -0,0 +1,252 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package ogent