# pylint: disable=cyclic-import
import json
import re
from typing import Optional, Union

import aiohttp
import discord
import websockets
from pydactyl import PterodactylClient, exceptions
from redbot.core.utils.chat_formatting import pagify

from pterodactyl.config import config
from pterodactyl.logger import logger
from pterodactyl.pterodactyl import Pterodactyl


async def establish_websocket_connection(coginstance: Pterodactyl) -> None:
    base_url = await config.base_url()

    logger.debug("Establishing WebSocket connection")

    websocket_credentials = await retrieve_websocket_credentials(coginstance)

    async with websockets.connect(websocket_credentials['data']['socket'], origin=base_url, ping_timeout=60) as websocket:
        logger.info("WebSocket connection established")

        auth_message = json.dumps({"event": "auth", "args": [websocket_credentials['data']['token']]})
        await websocket.send(auth_message)
        logger.debug("Authentication message sent")

        coginstance.websocket = websocket

        await loop(coginstance, websocket)

async def loop(coginstance: Pterodactyl, websocket: websockets.WebSocketClientProtocol) -> None:
    current_status = ''
    while True: # pylint: disable=too-many-nested-blocks
        message = await websocket.recv()
        if json.loads(message)['event'] in ('token expiring', 'token expired'):
            logger.debug("Received token expiring/expired event. Refreshing token.")
            websocket_credentials = await retrieve_websocket_credentials(coginstance)
            auth_message = json.dumps({"event": "auth", "args": [websocket_credentials['data']['token']]})
            await websocket.send(auth_message)
            logger.debug("Authentication message sent")

        if json.loads(message)['event'] == 'auth success':
            logger.info("WebSocket authentication successful")

        if json.loads(message)['event'] == 'console output' and await config.console_channel() is not None:
            if current_status in ('running', 'offline', ''):
                content = remove_ansi_escape_codes(json.loads(message)['args'][0])

                channel = coginstance.bot.get_channel(await config.console_channel())
                if channel is not None:
                    if content.startswith('['):
                        pagified_content = pagify(content, delims=[" ", "\n"])
                        for page in pagified_content:
                            await channel.send(content=page)

                chat_message = await check_if_chat_message(content)
                if chat_message:
                    info = await get_info(chat_message['username'])
                    if info is not None:
                        await send_chat_discord(coginstance, chat_message['username'], chat_message['message'], info['data']['player']['avatar'])
                    else:
                        await send_chat_discord(coginstance, chat_message['username'], chat_message['message'], 'https://seafsh.cc/u/j3AzqQ.png')

        if json.loads(message)['event'] == 'status':
            current_status = json.loads(message)['args'][0]
            if await config.console_channel() is not None:
                console = coginstance.bot.get_channel(await config.console_channel())
                if console is not None:
                    await console.send(f"Server status changed! `{json.loads(message)['args'][0]}`")

async def retrieve_websocket_credentials(coginstance: Pterodactyl) -> Optional[dict]:
    base_url = await config.base_url()
    api_key = await config.api_key()
    server_id = await config.server_id()

    try:
        client = PterodactylClient(base_url, api_key, debug=True).client
        coginstance.client = client
        websocket_credentials = client.servers.get_websocket(server_id)
        logger.debug("""Websocket connection details retrieved:
                            Socket: %s
                            Token: %s...""",
                            websocket_credentials['data']['socket'],
                            websocket_credentials['data']['token'][:20]
                        )
        return websocket_credentials
        #NOTE - The token is truncated to prevent it from being logged in its entirety, for security reasons
    except exceptions.ClientConfigError as e:
        return logger.error('Failed to initialize Pterodactyl client: %s', e)
    except exceptions.PterodactylApiError as e:
        return logger.error('Failed to retrieve Pterodactyl websocket: %s', e)

def remove_ansi_escape_codes(text: str) -> str:
    ansi_escape = re.compile(r'\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])')
    #NOTE - https://chat.openai.com/share/d92f9acf-d776-4fd6-a53f-b14ac15dd540
    return ansi_escape.sub('', text)

async def check_if_chat_message(text: str) -> Union[bool, dict]:
    logger.debug("Checking if message is a chat message")
    regex = await config.chat_regex()
    match: Optional[re.Match[str]] = re.match(regex, text)
    if match:
        groups = {"time": match.group(1), "username": match.group(2), "message": match.group(3)}
        logger.debug("Message is a chat message\n%s", json.dumps(groups))
        return groups
    logger.debug("Message is not a chat message")
    return False

async def get_info(username: str) -> Optional[dict]:
    logger.debug("Retrieving player info for %s", username)
    endpoint = await config.api_endpoint()
    async with aiohttp.ClientSession() as session:
        async with session.get(f"https://playerdb.co/api/player/{endpoint}/{username}") as response:
            if response.status == 200:
                logger.debug("Player info retrieved for %s\n%s", username, json.dumps(await response.json()))
                return await response.json()
            logger.error("Failed to retrieve player info for %s: %s", username, response.status)
            return None

async def send_chat_discord(coginstance: Pterodactyl, username: str, message: str, avatar_url: str) -> None:
    logger.debug("Sending chat message to Discord")
    channel = coginstance.bot.get_channel(await config.chat_channel())
    if channel is not None:
        webhooks = await channel.webhooks()
        webhook = discord.utils.get(webhooks, name="Pterodactyl Chat")
        if webhook is None:
            webhook = await channel.create_webhook(name="Pterodactyl Chat")
        await webhook.send(content=message, username=username, avatar_url=avatar_url)
        logger.debug("Chat message sent to Discord")
    else:
        logger.debug("Chat channel not set. Skipping sending chat message to Discord")