from __future__ import annotations

import secrets, time, json
from aiohttp import ClientSession

from ..typing import AsyncResult, Messages
from .base_provider import AsyncGeneratorProvider
from .helper import format_prompt


class GPTalk(AsyncGeneratorProvider):
    url = "https://gptalk.net"
    supports_gpt_35_turbo = True
    working = True
    _auth = None

    @classmethod
    async def create_async_generator(
        cls,
        model: str,
        messages: Messages,
        proxy: str = None,
        **kwargs
    ) -> AsyncResult:
        if not model:
            model = "gpt-3.5-turbo"
        timestamp = int(time.time())
        headers = {
            'authority': 'gptalk.net',
            'accept': '*/*',
            'accept-language': 'de-DE,de;q=0.9,en-DE;q=0.8,en;q=0.7,en-US;q=0.6,nl;q=0.5,zh-CN;q=0.4,zh-TW;q=0.3,zh;q=0.2',
            'content-type': 'application/json',
            'origin': 'https://gptalk.net',
            'sec-ch-ua': '"Google Chrome";v="117", "Not;A=Brand";v="8", "Chromium";v="117"',
            'sec-ch-ua-mobile': '?0',
            'sec-ch-ua-platform': '"Linux"',
            'sec-fetch-dest': 'empty',
            'sec-fetch-mode': 'cors',
            'sec-fetch-site': 'same-origin',
            'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36',
            'x-auth-appid': '2229',
            'x-auth-openid': '',
            'x-auth-platform': '',
            'x-auth-timestamp': f"{timestamp}",
        }
        async with ClientSession(headers=headers) as session:
            if not cls._auth or cls._auth["expires_at"] < timestamp:
                data = {
                    "fingerprint": secrets.token_hex(16).zfill(32),
                    "platform": "fingerprint"
                }
                async with session.post(f"{cls.url}/api/chatgpt/user/login", json=data, proxy=proxy) as response:
                    response.raise_for_status()
                    cls._auth = (await response.json())["data"]
            data = {
                "content": format_prompt(messages),
                "accept": "stream",
                "from": 1,
                "model": model,
                "is_mobile": 0,
                "user_agent": headers["user-agent"],
                "is_open_ctx": 0,
                "prompt": "",
                "roid": 111,
                "temperature": 0,
                "ctx_msg_count": 3,
                "created_at": timestamp
            }
            headers = {
                'authorization': f'Bearer {cls._auth["token"]}',
            }
            async with session.post(f"{cls.url}/api/chatgpt/chatapi/text", json=data, headers=headers, proxy=proxy) as response:
                response.raise_for_status()
                token = (await response.json())["data"]["token"]
            last_message = ""
            async with session.get(f"{cls.url}/api/chatgpt/chatapi/stream", params={"token": token}, proxy=proxy) as response:
                response.raise_for_status()
                async for line in response.content:
                    if line.startswith(b"data: "):
                        if line.startswith(b"data: [DONE]"):
                            break
                        message = json.loads(line[6:-1])["content"]
                        yield message[len(last_message):]
                        last_message = message