feat demote_all: demote all admins in chat.

app/plugins/admin/promote.py

@@ -1,6 +1,7 @@
 import asyncio
 
 from pyrogram.enums import ChatMemberStatus
+from pyrogram.errors import FloodWait
 from pyrogram.types import ChatPrivileges, User
 
 from app import BOT, Message
@@ -82,3 +83,37 @@ async def promote_or_demote(bot: BOT, message: Message) -> None:
         await response.edit(text=response_text)
     except Exception as e:
         await response.edit(text=e, del_in=10, block=True)
+
+
+@BOT.add_cmd(cmd="demote_all", allow_sudo=False)
+async def demote_all(bot: BOT, message: Message):
+    me = await bot.get_chat_member(message.chat.id, bot.me.id)
+    if me.status != ChatMemberStatus.OWNER:
+        await message.reply("Cannot Demote all without being Chat Owner.")
+        return
+
+    resp = await message.reply("Hang on demoting all Admins...")
+    count = 0
+
+    async for member in bot.get_chat_members(message.chat.id):
+        if member.status != ChatMemberStatus.ADMINISTRATOR:
+            continue
+
+        try:
+            await bot.promote_chat_member(
+                chat_id=message.chat.id,
+                user_id=member.user.id,
+                privileges=DEMOTE_PRIVILEGES,
+            )
+        except FloodWait as f:
+            await asyncio.sleep(f.value + 10)
+            await bot.promote_chat_member(
+                chat_id=message.chat.id,
+                user_id=member.user.id,
+                privileges=DEMOTE_PRIVILEGES,
+            )
+        await asyncio.sleep(0.5)
+        count += 1
+
+    await resp.edit(f"Demoted <b>{count}</b> admins in {message.chat.title}.")
+    await resp.log()