(rooms): Add interactive lock.

Add an interactive lock so users cannot have multiple menus open simultaneously.

bot/modules/accountability/commands.py

@@ -2,6 +2,7 @@ import re
 import datetime
 import discord
 import asyncio
+import contextlib
 from cmdClient.checks import in_guild
 
 from meta import client
@@ -38,6 +39,26 @@ def time_format(time):
         time.timestamp() + 3600,
     )
 
+user_locks = {}  # Map userid -> ctx
+
+
+@contextlib.contextmanager
+def ensure_exclusive(ctx):
+    """
+    Cancel any existing exclusive contexts for the author.
+    """
+    old_ctx = user_locks.pop(ctx.author.id, None)
+    if old_ctx:
+        [task.cancel() for task in old_ctx.tasks]
+
+    user_locks[ctx.author.id] = ctx
+    try:
+        yield
+    finally:
+        new_ctx = user_locks.get(ctx.author.id, None)
+        if new_ctx and new_ctx.msg.id == ctx.msg.id:
+            user_locks.pop(ctx.author.id)
+
 
 @module.cmd(
     name="rooms",
@@ -101,6 +122,7 @@ async def cmd_rooms(ctx):
             valid = valid and (re.search(multiselect_regex, msg.content) or msg.content.lower() == 'c')
             return valid
 
+        with ensure_exclusive(ctx):
             try:
                 message = await ctx.client.wait_for('message', check=check, timeout=60)
             except asyncio.TimeoutError:
@@ -239,6 +261,7 @@ async def cmd_rooms(ctx):
             valid = valid and (re.search(multiselect_regex, msg.content) or msg.content.lower() == 'c')
             return valid
 
+        with ensure_exclusive(ctx):
             try:
                 message = await ctx.client.wait_for('message', check=check, timeout=60)
             except asyncio.TimeoutError: