import os

def load_watchlist():
    try:
        with open("watchlist.txt", "r", encoding="utf-8") as f:
            return [line.strip().lower() for line in f if line.strip()]
    except FileNotFoundError:
        return []

def on_user_joined(user, bot):
    try:
        bot_channel_id = bot.ttclient.get_my_channel_id()
        if user.channelid == bot_channel_id:
            welcome_msg = f"👋 Hello {user.nickname}, welcome to the channel!"
            bot.send_channel_message(welcome_msg)
    except Exception as e:
        print(f"[ERROR] Failed to send welcome message: {e}")

def on_user_loggedin(user, bot):
    try:
        watchlist = load_watchlist()
        username = user.nickname.lower()

        for badname in watchlist:
            if badname in username:
                reason = "🚫 You are kicked because your nickname contains inappropriate words."
                bot.send_private_message(user.userid, reason)
                bot.kick_user(user.userid, bot.ttclient.get_my_channel_id())
                print(f"[INFO] Kicked user: {user.nickname}")
                break
    except Exception as e:
        print(f"[ERROR] Failed to check user login: {e}")