add chat post

src/commands/chat_post.rs

@@ -0,0 +1,75 @@
+use anyhow::{Context, Result};
+use serde_json::{json, Value};
+
+use super::auth;
+use super::token;
+use crate::xrpc::XrpcClient;
+
+const CHAT_PROXY_HEADER: &str = "did:web:bsky.syu.is#bsky_chat";
+
+/// Load chat proxy DID from config or use default
+fn load_chat_proxy() -> Result<String> {
+    let config = token::load_config()?;
+    if let Some(network) = config["network"].as_str() {
+        Ok(format!("did:web:bsky.{}#bsky_chat", network))
+    } else {
+        Ok(CHAT_PROXY_HEADER.to_string())
+    }
+}
+
+/// Send a DM via chat.bsky.convo.sendMessage
+pub async fn post(text: &str, is_bot: bool, did: &str) -> Result<()> {
+    let session = if is_bot {
+        auth::refresh_bot_session().await?
+    } else {
+        auth::refresh_session().await?
+    };
+    let pds = session.pds.as_deref().unwrap_or("syu.is");
+    let client = if is_bot {
+        XrpcClient::new_bot(pds)
+    } else {
+        XrpcClient::new(pds)
+    };
+    let proxy = load_chat_proxy()?;
+
+    // Get or create convo with the target DID
+    let convo_resp: Value = client
+        .query_auth_proxy(
+            "chat.bsky.convo.getConvoForMembers",
+            &[("members", did)],
+            &session.access_jwt,
+            &proxy,
+        )
+        .await
+        .context("Failed to get convo for members")?;
+
+    let convo_id = convo_resp["convo"]["id"]
+        .as_str()
+        .context("No convo id in response")?;
+
+    // Send message
+    let send_body = json!({
+        "convoId": convo_id,
+        "message": {
+            "text": text
+        }
+    });
+
+    let result: Value = client
+        .call_proxy(
+            "chat.bsky.convo.sendMessage",
+            &send_body,
+            &session.access_jwt,
+            &proxy,
+        )
+        .await
+        .context("Failed to send message")?;
+
+    let msg_id = result["id"].as_str().unwrap_or("unknown");
+    println!("{}", json!({
+        "id": msg_id,
+        "convoId": convo_id,
+    }));
+
+    Ok(())
+}

src/commands/mod.rs

@@ -15,3 +15,4 @@ pub mod gpt;
 pub mod oauth;
 pub mod setup;
 pub mod twofa;
+pub mod chat_post;

src/main.rs

@@ -169,6 +169,18 @@ enum Commands {
         new: bool,
     },
 
+    /// Send a DM via chat.bsky.convo
+    ChatPost {
+        /// Message text
+        text: String,
+        /// Target user DID
+        #[arg(short, long)]
+        did: String,
+        /// Send as bot (uses bot.json)
+        #[arg(long)]
+        bot: bool,
+    },
+
     /// Run MCP server (for Claude Code integration)
     #[command(name = "mcp-serve")]
     McpServe,
@@ -388,6 +400,9 @@ async fn main() -> Result<()> {
         Commands::Chat { message, new } => {
             lms::chat::run(message.as_deref(), new).await?;
         }
+        Commands::ChatPost { text, did, bot } => {
+            commands::chat_post::post(&text, bot, &did).await?;
+        }
         Commands::McpServe => {
             mcp::serve()?;
         }