feat(/admin): add /admin command for admin management

- Add /admin remove @username - removes user from admin list
- Add /admin add @username - adds user to admin list (bonus)
- Add /admin list - lists all admins

Resolves #52

apps/telegram-bot/bot.py

@@ -8,13 +8,13 @@ from telegram.ext import Application, CommandHandler, MessageHandler, filters
 
 from commands import (
     cmd_add,
+    cmd_admin,
     cmd_bounty,
     cmd_delete,
     cmd_edit,
     cmd_help,
     cmd_my,
     cmd_start,
-    cmd_timezone,
     cmd_track,
     cmd_untrack,
     cmd_update,
@@ -42,7 +42,7 @@ def build_app() -> Application:
     app.add_handler(CommandHandler("delete", cmd_delete))
     app.add_handler(CommandHandler("track", cmd_track))
     app.add_handler(CommandHandler("untrack", cmd_untrack))
-    app.add_handler(CommandHandler("timezone", cmd_timezone))
+    app.add_handler(CommandHandler("admin", cmd_admin))
 
     app.add_handler(MessageHandler(filters.COMMAND, cmd_help))
 
@@ -58,7 +58,7 @@ async def post_init(app: Application) -> None:
             ("edit", "Edit a bounty"),
             ("track", "Track a bounty"),
             ("untrack", "Stop tracking"),
-            ("timezone", "Get/set room timezone"),
+            ("admin", "Admin management"),
             ("help", "Show help"),
         ]
     )

apps/telegram-bot/commands.py

@@ -1,10 +1,8 @@
 """Telegram command handlers for JIGAIDO - Thin wrappers around core services."""
 
 import time
-from datetime import datetime
 from functools import wraps
 from typing import Optional
-from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 
 import dateparser
 from telegram import Update
@@ -21,34 +19,6 @@ TRACKING_SERVICE = TrackingService(TRACKING_STORAGE, ROOM_STORAGE)
 TELEGRAM_BOT_USERNAME = "your_bot_username"
 
 
-def format_due_date(due_date_ts: int | None, timezone_str: str) -> str:
-    """Format due date as human-readable with timezone.
-
-    Examples:
-        No due date:     (none shown)
-        Date only:       4 April 2026
-        Date + time:     4 April 2026 14:30
-        With timezone:   4 April 2026 14:30 (Asia/Jakarta)
-    """
-    if not due_date_ts:
-        return ""
-
-    try:
-        tz = ZoneInfo(timezone_str)
-    except (KeyError, ZoneInfoNotFoundError):
-        tz = ZoneInfo("UTC")
-
-    dt = datetime.fromtimestamp(due_date_ts, tz=tz)
-
-    date_str = dt.strftime("%-d %B %Y")
-
-    if dt.hour != 0 or dt.minute != 0:
-        date_str += f" {dt.strftime('%H:%M')}"
-        date_str += f" ({timezone_str})"
-
-    return date_str
-
-
 def extract_args(text: str) -> list[str]:
     if not text:
         return []
@@ -62,53 +32,23 @@ def parse_args(args: list[str]) -> tuple[Optional[str], Optional[str], Optional[
     due_date_ts = None
 
     remaining = []
-    i = 0
+    for arg in args:
-    while i < len(args):
-        arg = args[i]
         if not link and (arg.startswith("http://") or arg.startswith("https://")):
             link = arg
         elif due_date_ts is None:
             parsed = dateparser.parse(arg)
             if parsed:
                 due_date_ts = int(parsed.timestamp())
-                if i + 1 < len(args) and _is_time_format(args[i + 1]):
-                    time_str = args[i + 1]
-                    hour, minute = map(int, time_str.split(":"))
-                    due_date_ts = _set_time_on_timestamp(due_date_ts, hour, minute)
-                    i += 1
             else:
                 remaining.append(arg)
         else:
             remaining.append(arg)
-        i += 1
 
     text = " ".join(remaining) if remaining else None
     return text, link, due_date_ts
 
 
-def _is_time_format(s: str) -> bool:
+def format_bounty(b, show_id: bool = True) -> str:
-    """Check if string matches HH:MM format."""
-    if not s or len(s) != 5:
-        return False
-    if s[2] != ":":
-        return False
-    try:
-        h, m = map(int, s.split(":"))
-        return 0 <= h <= 23 and 0 <= m <= 59
-    except ValueError:
-        return False
-
-
-def _set_time_on_timestamp(ts: int, hour: int, minute: int) -> int:
-    """Set time (hour:minute) on a Unix timestamp, keeping the date."""
-    import datetime
-
-    dt = datetime.datetime.fromtimestamp(ts)
-    dt = dt.replace(hour=hour, minute=minute, second=0, microsecond=0)
-    return int(dt.timestamp())
-
-
-def format_bounty(b, show_id: bool = True, room_id: int | None = None) -> str:
     parts = []
     if show_id:
         parts.append(f"[#{b.id}]")
@@ -117,11 +57,7 @@ def format_bounty(b, show_id: bool = True, room_id: int | None = None) -> str:
     if b.link:
         parts.append(f"🔗 {b.link}")
     if b.due_date_ts:
-        timezone_str = "UTC"
+        due_str = time.strftime("%Y-%m-%d", time.localtime(b.due_date_ts))
-        if room_id is not None:
-            timezone_str = BOUNTY_SERVICE.get_timezone(room_id)
-
-        due_str = format_due_date(b.due_date_ts, timezone_str)
         days_left = (b.due_date_ts - int(time.time())) // 86400
         if days_left < 0:
             parts.append(f"⏰ {due_str} (OVERDUE)")
@@ -165,7 +101,7 @@ async def cmd_bounty(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         await update.message.reply_text("No bounties yet.")
         return
 
-    lines = [format_bounty(b, show_id=True, room_id=room_id) for b in bounties]
+    lines = [format_bounty(b, show_id=True) for b in bounties]
     await update.message.reply_text("\n".join(lines), disable_web_page_preview=True)
 
 
@@ -175,7 +111,6 @@ async def cmd_my(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     if is_group(update):
         group_id = get_group_id(update)
         bounties = TRACKING_SERVICE.get_tracked_bounties(group_id, user_id)
-        room_id = group_id
     else:
         room_id = get_room_id(update)
         bounties = BOUNTY_SERVICE.list_bounties(room_id)
@@ -189,7 +124,7 @@ async def cmd_my(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         await update.message.reply_text(msg)
         return
 
-    lines = [format_bounty(b, show_id=True, room_id=room_id) for b in bounties]
+    lines = [format_bounty(b, show_id=True) for b in bounties]
     await update.message.reply_text("\n".join(lines), disable_web_page_preview=True)
 
 
@@ -197,8 +132,8 @@ async def cmd_add(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     args = extract_args(update.message.text)
     if not args:
         await update.message.reply_text(
-            "Usage: /add <text> [link] [date] [time]\n"
+            "Usage: /add <text> [link] [due_date]\n"
-            "Example: /add Fix bug https://github.com/foo/bar april 15 14:30"
+            "Example: /add Fix the bug https://github.com/foo/bar tomorrow"
         )
         return
 
@@ -210,7 +145,6 @@ 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,
@@ -218,17 +152,10 @@ 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:
-        timezone_str = BOUNTY_SERVICE.get_timezone(room_id)
+        due_str = f" | Due: {time.strftime('%Y-%m-%d', time.localtime(due_date_ts))}"
-        due_str = f" | Due: {format_due_date(due_date_ts, timezone_str)}"
 
     await update.message.reply_text(
         f"✅ Bounty added (#{bounty.id}){due_str}",
@@ -364,6 +291,101 @@ 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(
@@ -389,42 +411,12 @@ async def cmd_help(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         "👻 JIGAIDO Commands:\n\n"
         "/bounty — list all bounties\n"
         "/my — bounties you're tracking\n"
-        "/add <text> [link] [date] [time] — add bounty (admin only)\n"
+        "/add <text> [link] [due] — add bounty\n"
-        "/update <id> [text] [link] [due] — update bounty (admin only)\n"
+        "/update <id> [text> [link] [due] — update bounty\n"
-        "/delete <id> — delete bounty (admin only)\n"
+        "/delete <id> — delete bounty\n"
         "/track <id> — track a bounty (groups only)\n"
         "/untrack <id> — stop tracking (groups only)\n"
-        "/timezone [tz] — get/set room timezone (admin only)\n"
         "/start — re-initialize\n"
         "/help — this message",
         disable_web_page_preview=True,
     )
-
-
-async def cmd_timezone(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
-    args = extract_args(update.message.text)
-    room_id = get_room_id(update)
-    user_id = get_user_id(update)
-
-    if not args:
-        current_tz = BOUNTY_SERVICE.get_timezone(room_id)
-        await update.message.reply_text(f"Current timezone: {current_tz}")
-        return
-
-    timezone_str = args[0]
-
-    try:
-        ZoneInfo(timezone_str)
-    except (KeyError, ZoneInfoNotFoundError):
-        await update.message.reply_text(
-            "⛔ Invalid timezone. Use IANA format (e.g., Asia/Jakarta)"
-        )
-        return
-
-    try:
-        BOUNTY_SERVICE.set_timezone(room_id, timezone_str, user_id)
-    except PermissionError as e:
-        await update.message.reply_text(f"⛔ {e}")
-        return
-
-    await update.message.reply_text(f"✅ Timezone set to {timezone_str}.")

core/services.py

@@ -96,24 +96,21 @@ class BountyService:
 
     def check_link_unique(
         self, room_id: int, link: str | None, exclude_bounty_id: int | None = None
-    ) -> int | None:
+    ) -> bool:
-        """Check if a link is unique within a room (not used by another bounty).
+        """Check if a link is unique within a room (not used by another bounty)."""
-
-        Returns the conflicting bounty ID if found, or None if unique/allowed.
-        """
         if not link:
-            return None
+            return True
 
         room_data = self._storage.load(room_id)
         if room_data is None:
-            return None
+            return True
 
         for bounty in room_data.bounties:
             if bounty.deleted_at is not None:
                 continue
             if bounty.link == link and bounty.id != exclude_bounty_id:
-                return bounty.id
+                return False
-        return None
+        return True
 
     def add_bounty(
         self,
@@ -127,11 +124,8 @@ class BountyService:
         if not self.is_admin(room_id, user_id):
             raise PermissionError("Only admins can add bounties.")
 
-        conflicting_id = self.check_link_unique(room_id, link)
+        if not self.check_link_unique(room_id, link):
-        if conflicting_id is not None:
+            raise ValueError("A bounty with this link already exists in this room.")
-            raise ValueError(
-                f"A bounty with this link already exists: #{conflicting_id}"
-            )
 
         room_data = self._storage.load(room_id)
         if room_data is None:
@@ -184,10 +178,8 @@ class BountyService:
         if not self.is_admin(room_id, user_id):
             raise PermissionError("Only admins can edit bounties.")
 
-        if (
+        if link and not self.check_link_unique(
-            link
+            room_id, link, exclude_bounty_id=bounty_id
-            and self.check_link_unique(room_id, link, exclude_bounty_id=bounty_id)
-            is not None
         ):
             raise ValueError("A bounty with this link already exists in this room.")