songbird music support init

src/commands/music/leave.rs

@@ -0,0 +1,32 @@
+use serenity::framework::standard::macros::command;
+use serenity::framework::standard::CommandResult;
+use serenity::model::prelude::*;
+use serenity::prelude::*;
+
+use crate::commands::misc::check_msg;
+
+#[command]
+#[only_in(guilds)]
+async fn leave(ctx: &Context, msg: &Message) -> CommandResult {
+    let guild_id = msg.guild_id.unwrap();
+
+    let manager = songbird::get(ctx)
+        .await
+        .expect("Client placed in at init.")
+        .clone();
+
+    let has_handler = manager.get(guild_id).is_some();
+
+    if has_handler {
+        if let Err(err) = manager.remove(guild_id).await {
+            check_msg(msg.channel_id.say(&ctx.http, format!("Failed: {:?}", err)).await);
+        }
+
+        check_msg(msg.channel_id.say(&ctx.http, "Left voice channel").await);
+    }
+    else {
+        check_msg(msg.reply(ctx, "Not in a voice channel").await);
+    }
+
+    Ok(())
+}