import hashlib
import json
import os
import time
import uuid
from datetime import datetime
from typing import Dict, get_type_hints

import requests
from g4f.typing import sha256

url: str = "https://ai.ls"
model: str = "gpt-3.5-turbo"
supports_stream = True
needs_auth = False
working = True


class Utils:
    def hash(json_data: Dict[str, str]) -> sha256:
        base_string: str = "%s:%s:%s:%s" % (
            json_data["t"],
            json_data["m"],
            "WI,2rU#_r:r~aF4aJ36[.Z(/8Rv93Rf",
            len(json_data["m"]),
        )

        return hashlib.sha256(base_string.encode()).hexdigest()

    def format_timestamp(timestamp: int) -> str:
        e = timestamp
        n = e % 10
        r = n + 1 if n % 2 == 0 else n
        return str(e - n + r)


def _create_completion(model: str, messages: list, temperature: float = 0.6, stream: bool = False, **kwargs):
    headers = {
        "authority": "api.caipacity.com",
        "accept": "*/*",
        "accept-language": "en,fr-FR;q=0.9,fr;q=0.8,es-ES;q=0.7,es;q=0.6,en-US;q=0.5,am;q=0.4,de;q=0.3",
        "authorization": "Bearer free",
        "client-id": str(uuid.uuid4()),
        "client-v": "0.1.249",
        "content-type": "application/json",
        "origin": "https://ai.ls",
        "referer": "https://ai.ls/",
        "sec-ch-ua": '"Not.A/Brand";v="8", "Chromium";v="114", "Google Chrome";v="114"',
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": '"Windows"',
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "cross-site",
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36",
    }

    timestamp = Utils.format_timestamp(int(time.time() * 1000))

    sig = {
        "d": datetime.now().strftime("%Y-%m-%d"),
        "t": timestamp,
        "s": Utils.hash({"t": timestamp, "m": messages[-1]["content"]}),
    }

    json_data = json.dumps(
        separators=(",", ":"),
        obj={
            "model": "gpt-3.5-turbo",
            "temperature": 0.6,
            "stream": True,
            "messages": messages,
        }
        | sig,
    )

    response = requests.post(
        "https://api.caipacity.com/v1/chat/completions",
        headers=headers,
        data=json_data,
        stream=True,
    )

    for token in response.iter_lines():
        if b"content" in token:
            completion_chunk = json.loads(token.decode().replace("data: ", ""))
            token = completion_chunk["choices"][0]["delta"].get("content")
            if token != None:
                yield token


params = f"g4f.Providers.{os.path.basename(__file__)[:-3]} supports: " + "(%s)" % ", ".join(
    [
        f"{name}: {get_type_hints(_create_completion)[name].__name__}"
        for name in _create_completion.__code__.co_varnames[: _create_completion.__code__.co_argcount]
    ]
)