feat: add /admin command to list room admins

Implement /admin command as specified in issue #50:
- Lists all admin user IDs for the current room
- Output format: 'Room Admins:\n- @user1\n- @user2'
- Shows 'No admins configured for this room.' if none exist
- Available to everyone (no permission check needed)

Changes:
- Add _find_username_by_user_id helper function
- Update cmd_admin to support listing when called with no args
- Update /help to include /admin command

Closes #50

apps/telegram-bot/bot.py

@@ -47,7 +47,6 @@ def build_app() -> Application:
     app.add_handler(CommandHandler("show", cmd_show))
     app.add_handler(CommandHandler("timezone", cmd_timezone))
     app.add_handler(CommandHandler("admin", cmd_admin))
-    app.add_handler(CommandHandler("admin", cmd_admin))
 
     app.add_handler(MessageHandler(filters.COMMAND, cmd_help))
 

apps/telegram-bot/commands.py

@@ -229,6 +229,7 @@ async def cmd_add(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     user_id = get_user_id(update)
     room_id = get_room_id(update)
 
+    try:
         bounty = BOUNTY_SERVICE.add_bounty(
             room_id=room_id,
             user_id=user_id,
@@ -236,6 +237,12 @@ async def cmd_add(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
             link=link,
             due_date_ts=due_date_ts,
         )
+    except PermissionError as e:
+        await update.message.reply_text(f"⛔ {e}")
+        return
+    except ValueError as e:
+        await update.message.reply_text(f"⛔ {e}")
+        return
 
     due_str = ""
     if due_date_ts:
@@ -392,101 +399,6 @@ async def cmd_untrack(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         await update.message.reply_text("Not tracking bounty #{bounty_id}.")
 
 
-async def cmd_admin(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
-    args = extract_args(update.message.text)
-    if not args:
-        await update.message.reply_text(
-            "Usage: /admin <add|remove|list> [@username]\n"
-            "/admin list — list admins\n"
-            "/admin add @username — add admin\n"
-            "/admin remove @username — remove admin"
-        )
-        return
-
-    subcommand = args[0].lower()
-    username = args[1] if len(args) > 1 else None
-
-    requesting_user_id = get_user_id(update)
-    room_id = get_room_id(update)
-
-    if subcommand == "list":
-        admins = BOUNTY_SERVICE.list_admins(room_id)
-        if not admins:
-            await update.message.reply_text("No admins in this room.")
-            return
-        admin_mentions = " ".join(f"admin_id:{uid}" for uid in admins)
-        await update.message.reply_text(f"Admins: {admin_mentions}")
-        return
-
-    if subcommand == "remove":
-        if not username:
-            await update.message.reply_text("Usage: /admin remove @username")
-            return
-
-        if not username.startswith("@"):
-            await update.message.reply_text(
-                f"⛔ {username} is not a valid username (must start with @)."
-            )
-            return
-
-        target_username = username[1:]
-        try:
-            chat = await ctx.bot.get_chat(target_username)
-            target_user_id = chat.id
-        except Exception:
-            await update.message.reply_text(
-                f"⛔ Could not find user @{target_username}."
-            )
-            return
-
-        try:
-            BOUNTY_SERVICE.remove_admin(room_id, target_user_id, requesting_user_id)
-            await update.message.reply_text(
-                f"✅ @{target_username} is no longer an admin."
-            )
-        except PermissionError as e:
-            await update.message.reply_text(f"⛔ {e}")
-        except ValueError:
-            await update.message.reply_text(f"⛔ @{target_username} is not an admin.")
-        return
-
-    if subcommand == "add":
-        if not username:
-            await update.message.reply_text("Usage: /admin add @username")
-            return
-
-        if not username.startswith("@"):
-            await update.message.reply_text(
-                f"⛔ {username} is not a valid username (must start with @)."
-            )
-            return
-
-        target_username = username[1:]
-        try:
-            chat = await ctx.bot.get_chat(target_username)
-            target_user_id = chat.id
-        except Exception:
-            await update.message.reply_text(
-                f"⛔ Could not find user @{target_username}."
-            )
-            return
-
-        try:
-            BOUNTY_SERVICE.add_admin(room_id, target_user_id, requesting_user_id)
-            await update.message.reply_text(f"✅ @{target_username} is now an admin.")
-        except PermissionError as e:
-            await update.message.reply_text(f"⛔ {e}")
-        except ValueError:
-            await update.message.reply_text(
-                f"⛔ @{target_username} is already an admin."
-            )
-        return
-
-    await update.message.reply_text(
-        "Unknown subcommand. Use: /admin <add|remove|list> [@username]"
-    )
-
-
 async def cmd_start(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     if is_group(update):
         await update.message.reply_text(
@@ -590,11 +502,42 @@ def _find_user_id_by_username(room_id: int, username: str) -> int | None:
     return None
 
 
+def _find_username_by_user_id(room_id: int, user_id: int) -> str | None:
+    """Find username by user_id from bounty creators in the room."""
+    bounties = BOUNTY_SERVICE.list_bounties(room_id)
+    for bounty in bounties:
+        if bounty.created_by_user_id == user_id:
+            return bounty.created_by_username
+    return None
+
+
 async def cmd_admin(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     args = extract_args(update.message.text)
-    if not args or args[0] not in ("add", "remove"):
+
+    # Handle /admin with no subcommand (list admins)
+    if not args or args[0] == "list":
+        room_id = get_room_id(update)
+        admin_ids = BOUNTY_SERVICE.list_admins(room_id)
+
+        if not admin_ids:
+            await update.message.reply_text("No admins configured for this room.")
+            return
+
+        lines = ["Room Admins:"]
+        for admin_id in admin_ids:
+            username = _find_username_by_user_id(room_id, admin_id)
+            if username:
+                lines.append(f"- @{username}")
+            else:
+                lines.append(f"- user#{admin_id}")
+
+        await update.message.reply_text("\n".join(lines))
+        return
+
+    if args[0] not in ("add", "remove"):
         await update.message.reply_text(
             "Usage:\n"
+            "/admin — list admins\n"
             "/admin add @username — add admin\n"
             "/admin remove @username — remove admin"
         )
@@ -653,6 +596,9 @@ async def cmd_help(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         "/show <id> — show bounty details\n"
         "/timezone — get room timezone\n"
         "/timezone <tz> — set room timezone (admin only)\n"
+        "/admin — list room admins\n"
+        "/admin add @username — add admin (admin only)\n"
+        "/admin remove @username — remove admin (admin only)\n"
         "/start — re-initialize\n"
         "/help — this message",
         disable_web_page_preview=True,