Add join command to join user in cottage

src/main.rs

@@ -123,7 +123,11 @@ async fn spread(
     Ok(())
 }
 
-async fn join(ctx: Context<'_>, from: serenity::ChannelId, to: serenity::ChannelId) -> Result<()> {
+async fn collect(
+    ctx: Context<'_>,
+    from: serenity::ChannelId,
+    to: serenity::ChannelId,
+) -> Result<()> {
     let guild = ctx
         .guild_id()
         .ok_or_eyre("This bot only works in servers")?;
@@ -169,11 +173,38 @@ async fn dawn(ctx: Context<'_>) -> Result<()> {
         ..
     } = ctx.data().get(guild).await?;
 
-    join(ctx, cottages, town_square).await?;
+    collect(ctx, cottages, town_square).await?;
 
     Ok(())
 }
 
+#[poise::command(slash_command, ephemeral)]
+async fn join(ctx: Context<'_>, user: serenity::UserId) -> Result<()> {
+    let guild = ctx
+        .guild_id()
+        .ok_or_eyre("This bot only works in servers")?;
+    let GuildData { cottages, .. } = ctx.data().get(guild).await?;
+
+    let channel = channel_children(&ctx, cottages)
+        .await?
+        .into_iter()
+        .find(|chan| {
+            chan.members(ctx)
+                .is_ok_and(|members| members.iter().any(|member| member.user.id == user))
+        });
+
+    match channel {
+        Some(channel) => {
+            guild.move_member(ctx, ctx.author().id, channel).await?;
+            ctx.reply("Joined player").await?;
+        }
+        None => {
+            ctx.reply("User is not in cottages").await?;
+        }
+    }
+    Ok(())
+}
+
 #[poise::command(slash_command, ephemeral)]
 async fn st(ctx: Context<'_>, mut spectators: Vec<serenity::UserId>) -> Result<()> {
     let guild = ctx