feat: set bot commands

src/main.rs

@@ -19,8 +19,14 @@ const POLL_TYPES: &str = r#"["message"]"#;
 async fn main() -> std::io::Result<()> {
     let cfg = {
         let token = std::env::var("BOT_TOKEN").expect("invalid BOT_TOKEN env var value");
+        let client = Client::new();
+
+        init_cmds(&client, &token)
+            .await
+            .expect("could not make request to API");
+
         Config {
-            client: Client::new(),
+            client,
             upd_url: Url::parse(&format!("{BOT_URL}{token}/getUpdates"))
                 .unwrap()
                 .into(),
@@ -57,6 +63,26 @@ async fn main() -> std::io::Result<()> {
     Ok(())
 }
 
+async fn init_cmds(client: &Client, token: &str) -> Result<(), reqwest::Error> {
+    client
+        .get(format!("{BOT_URL}{token}/setMyCommands"))
+        .query(&[(
+            "commands",
+            serde_json::json!([
+                {
+                    "command": COMMAND[1..], // cmd name without leading slash
+                    "description": "Get XKCD comic by id",
+                }
+            ])
+            .to_string(),
+        )])
+        .send()
+        .await?
+        .error_for_status()?;
+
+    Ok(())
+}
+
 async fn handler(cfg: &Config, s: &mut State) -> Result<(), reqwest::Error> {
     let mut updates = cfg
         .client