2024-04-23 13:21:26 +00:00
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date = "2022-02-06"
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tags = ["rust", "mastodon"]
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title = "mammutのexampleをまとめてみる"
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slug = "rust-mammut"
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+++
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mastodon apiのrust libである[mammut](https://docs.rs/mammut/latest/mammut/)ですが、exampleがあるとわかりやすいと思ったので、作ってみました。
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まず、mastodonへのrequestはこんな感じになります。
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```sh
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curl -H "Content-Type: application/json" -X POST -Ss https://$host/oauth/token \
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-d "{
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\"client_id\": \"$client_id\",
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\"client_secret\": \"$client_secret\",
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\"grant_type\": \"password\",
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\"username\": \"$username\",
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\"password\": \"$password\",
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\"scope\": \"$scope\"
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}"
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```
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mammutでは`Data`として認証に必要な要素がまとめられてますので、各種要素を入れて`Mastodon::from_data(data)`すると認証できます。
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```toml:Cargo.toml
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[package]
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name = "test"
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version = "0.0.1"
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[dependencies]
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dotenv = "0.15"
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mammut = "0.13.0"
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```
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```rust:src/main.rs
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extern crate mammut;
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extern crate dotenv;
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use std::env;
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use mammut::{Data, Mastodon};
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fn main() -> mammut::Result<()> {
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let data = Data {
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base: env::var("BASE").unwrap().into(),
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client_id: env::var("CLIENT_ID").unwrap().into(),
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client_secret: env::var("CLIENT_SECRET").unwrap().into(),
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redirect: env::var("REDIRECT").unwrap().into(),
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token: env::var("TOKEN").unwrap().into(),
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};
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let mastodon = Mastodon::from_data(data);
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let t = mastodon.verify_credentials();
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println!("{:?}", t);
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Ok(())
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}
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```
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```sh:.env
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export TOKEN=''
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export CLIENT_ID=''
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export CLIENT_SECRET=''
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export REDIRECT=''
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2024-12-21 06:52:52 +00:00
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export BASE='https://mstdn.syui.ai'
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2024-04-23 13:21:26 +00:00
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```
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```sh
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$ cargo run
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$ ./target/debug/test
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```
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Data : https://docs.rs/mammut/latest/mammut/struct.Data.html
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### src/data
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ちなみに、`struct Data`はmammutが用意してるので、作る必要がありませんが、ファイルを分けて、何度も呼び出す場合、下記のようになります。`env`をやめて`config`にtokenなどを書いて読み込む例です。
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なお、`edition`を`2021`にすることで、様々な記法を省略できたりします。
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```toml:Cargo.toml
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[package]
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name = "test"
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version = "0.0.1"
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edition = "2021"
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[dependencies]
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dotenv = "0.15"
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mammut = "0.13.0"
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serde_derive = "*"
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serde = "*"
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config = { git = "https://github.com/mehcode/config-rs", branch = "master" }
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```
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```rust:src/data.rs
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use config::{Config, ConfigError, File};
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use serde_derive::Deserialize;
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use std::borrow::Cow;
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#[derive(Debug, Deserialize)]
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#[allow(unused)]
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pub struct Data {
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pub base: Cow<'static, str>,
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pub token: Cow<'static, str>,
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pub client_id: Cow<'static, str>,
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pub client_secret: Cow<'static, str>,
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pub redirect: Cow<'static, str>,
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}
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impl Data {
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pub fn new() -> Result<Self, ConfigError> {
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let s = Config::builder()
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.add_source(File::with_name("config"))
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.build()?;
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s.try_deserialize()
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}
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}
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```
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```rust:src/main.rs
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pub mod data;
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use data::Data as Datas;
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use mammut::{Data, Mastodon};
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fn token() -> Mastodon {
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let data = Datas::new().unwrap();
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let data = Data {
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base: data.base,
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token: data.token,
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client_id: data.client_id,
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client_secret: data.client_secret,
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redirect: data.redirect,
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};
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let t = Mastodon::from_data(data);
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return t;
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}
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fn main() {
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let mastodon = token();
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let t = mastodon.verify_credentials();
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println!("{:#?}", t);
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}
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```
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```sh:config.toml
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token = ""
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client_id = ""
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client_secret = ""
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redirect = "localhost"
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2024-12-21 06:52:52 +00:00
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base = "https://mstdn.syui.ai"
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2024-04-23 13:21:26 +00:00
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```
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```sh
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$ cargo run
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```
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### home dir
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ここからは簡潔に紹介します。
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`$HOME`を使うには`shellexpand`が便利です。
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```rust:Cargo.toml
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[dependencies]
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shellexpand = "*"
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```
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```rust
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impl Data {
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pub fn new() -> Result<Self, ConfigError> {
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let d = shellexpand::tilde("~") + "/.config/msr/config.toml";
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let s = Config::builder()
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.add_source(File::with_name(&d))
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.add_source(config::Environment::with_prefix("APP"))
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.build()?;
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s.try_deserialize()
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}
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}
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```
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### toot post
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```rust
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fn post() {
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let mastodon = token();
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let message = "test".to_string();
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let status_b = StatusBuilder::new(format!("{}", message));
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let post = mastodon.new_status(status_b);
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println!("{:?}", post);
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}
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```
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### timeline
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```rust
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fn timeline() -> mammut::Result<()> {
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let mastodon = token();
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let t = mastodon.get_home_timeline()?.initial_items;
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println!("{:?}", t);
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Ok(())
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}
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```
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### toot delete
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```rust
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#[allow(unused_must_use)]
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fn delete() -> mammut::Result<()> {
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let mastodon = token();
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let id = &mastodon.get_home_timeline()?.initial_items[0].id;
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mastodon.delete_status(id);
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Ok(())
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}
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```
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### upload media
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`media_ids`が必要になるので、手順としては、画像をmastodonのmedia serverにuploadする処理と、その出力にある`media_ids`をtootとしてpostする処理が必要になります。
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```rust
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use mammut::{Data, Mastodon, StatusBuilder, MediaBuilder};
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fn media() {
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let mastodon = token();
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let file = "./test.png".to_string();
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let t = mastodon.media(file.into());
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println!("{:?}", t);
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let id = t.as_ref().unwrap();
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let mid = Some(vec![id.id.to_string()]);
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let status = "#media".to_string();
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let status_b = StatusBuilder {
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status: status,
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in_reply_to_id: None,
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media_ids: mid,
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sensitive: None,
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spoiler_text: None,
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visibility: None,
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};
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let post = mastodon.new_status(status_b);
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println!("{:?}", post);
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}
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}
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```
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StatusBuilder : https://docs.rs/mammut/0.11.0/mammut/status_builder/struct.StatusBuilder.html
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`text`も同時に投稿するのはこっち。
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```rust
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use std::borrow::Cow;
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let text = "test";
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let s = Cow::Owned(String::from(text));
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let status_b = StatusBuilder {
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status: s,
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in_reply_to_id: None,
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media_ids: mid,
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sensitive: None,
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spoiler_text: None,
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visibility: None,
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};
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```
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ref : https://github.com/syui/msr
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