# bot_twitch.py
import os
import requests
import asyncio
from twitchio.ext import commands
import importlib
import cmd_twitch

import modules
import modules.utility

class TwitchBot(commands.Bot):
    def __init__(self, config, log_func):
        self.client_id = os.getenv("TWITCH_CLIENT_ID")
        self.client_secret = os.getenv("TWITCH_CLIENT_SECRET")
        self.token = os.getenv("TWITCH_BOT_TOKEN")
        self.refresh_token = os.getenv("TWITCH_REFRESH_TOKEN")
        self.log = log_func  # Use the logging function from bots.py
        self.config = config
        self.db_conn = None  # We'll set this 
        self.help_data = None  # We'll set this later

        # 1) Initialize the parent Bot FIRST
        super().__init__(
            token=self.token,
            prefix="!",
            initial_channels=config["twitch_channels"]
        )

        self.log("Twitch bot initiated")

        cmd_class = str(type(self._commands)).split("'", 2)[1]
        log_func(f"TwitchBot._commands type: {cmd_class}", "DEBUG")

        # 2) Then load commands
        self.load_commands()

    def set_db_connection(self, db_conn):
        """
        Store the DB connection so that commands can use it.
        """
        self.db_conn = db_conn

    async def event_message(self, message):
        """Logs and processes incoming Twitch messages."""
        if message.echo:
            return  # Ignore bot's own messages

        # Log the command if it's a command
        if message.content.startswith("!"):
            _cmd = message.content[1:] # Remove the leading "!"
            _cmd_args = _cmd.split(" ")[1:]
            _cmd = _cmd.split(" ", 1)[0]
            self.log(f"Command '{_cmd}' (Twitch) initiated by {message.author.name} in #{message.channel.name}", "DEBUG")
            if len(_cmd_args) > 1: self.log(f"!{_cmd} arguments: {_cmd_args}", "DEBUG")

        # Process the message for command execution
        await self.handle_commands(message)

    async def event_ready(self):
        self.log(f"Twitch bot is online as {self.nick}")

    async def refresh_access_token(self):
        """
        Refreshes the Twitch access token using the stored refresh token.
        Retries up to 2 times before logging a fatal error.
        """
        self.log("Attempting to refresh Twitch token...")

        url = "https://id.twitch.tv/oauth2/token"
        params = {
            "client_id": self.client_id,
            "client_secret": self.client_secret,
            "refresh_token": self.refresh_token,
            "grant_type": "refresh_token"
        }

        for attempt in range(3):  # Attempt up to 3 times
            try:
                response = requests.post(url, params=params)
                data = response.json()

                if "access_token" in data:
                    self.token = data["access_token"]
                    self.refresh_token = data.get("refresh_token", self.refresh_token)

                    os.environ["TWITCH_BOT_TOKEN"] = self.token
                    os.environ["TWITCH_REFRESH_TOKEN"] = self.refresh_token
                    self.update_env_file()

                    self.log("Twitch token refreshed successfully.")
                    return  # Success, exit function
                else:
                    self.log(f"Twitch token refresh failed (Attempt {attempt+1}/3): {data}", "WARNING")

            except Exception as e:
                self.log(f"Twitch token refresh error (Attempt {attempt+1}/3): {e}", "ERROR")

            await asyncio.sleep(10)  # Wait before retrying

        # If all attempts fail, log error
        self.log("Twitch token refresh failed after 3 attempts.", "FATAL")

    def update_env_file(self):
        """
        Updates the .env file with the new Twitch token.
        """
        try:
            with open(".env", "r") as file:
                lines = file.readlines()

            with open(".env", "w") as file:
                for line in lines:
                    if line.startswith("TWITCH_BOT_TOKEN="):
                        file.write(f"TWITCH_BOT_TOKEN={self.token}\n")
                    elif line.startswith("TWITCH_REFRESH_TOKEN="):
                        file.write(f"TWITCH_REFRESH_TOKEN={self.refresh_token}\n")
                    else:
                        file.write(line)

            self.log("Updated .env file with new Twitch token.")

        except Exception as e:
            self.log(f"Failed to update .env file: {e}", "ERROR")

    def load_commands(self):
        """
        Load all commands from cmd_twitch.py
        """
        try:
            cmd_twitch.setup(self)
            self.log("Twitch commands loaded successfully.")

            # Now load the help info from dictionary/help_twitch.json
            help_json_path = "dictionary/help_twitch.json"
            modules.utility.initialize_help_data(
                bot=self,
                help_json_path=help_json_path,
                is_discord=False,  # Twitch
                log_func=self.log
            )

        except Exception as e:
            self.log(f"Error loading Twitch commands: {e}", "ERROR")

    async def run(self):
        """
        Run the Twitch bot, refreshing tokens if needed.
        """
        retries = 0
        while True:
            if retries > 3:
                self.log(f"Twitch bot failed to connect after {retries} attempts.", "CIRITCAL")
                break # Break loop if repeatedly failing to connect to Twitch
            try:
                await self.start()
                #while True:
                #    await self.refresh_access_token()
                #    await asyncio.sleep(10800)  # Refresh every 3 hours
            except Exception as e:
                retries += 1
                self.log(f"Twitch bot failed to start: {e}", "CRITICAL")
                if "Invalid or unauthorized Access Token passed." in str(e):
                    try:
                        await self.refresh_access_token()
                    except Exception as e:
                        self.log(f"Unable to refresh Twitch token! Twitch bot will be offline!", "CRITICAL")
                if "'NoneType' object has no attribute 'cancel'" in str(e):
                    self.log(f"The Twitch bot experienced an initialization glitch. Try starting again", "FATAL")
                await asyncio.sleep(5) # Wait before retrying to authenticate