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from __future__ import annotations

import json
import random

import requests

from ..typing import Any, CreateResult
from .base_provider import BaseProvider


class EasyChat(BaseProvider):
    url: str              = "https://free.easychat.work"
    supports_stream       = True
    supports_gpt_35_turbo = True
    working               = False

    @staticmethod
    def create_completion(
        model: str,
        messages: list[dict[str, str]],
        stream: bool, **kwargs: Any) -> CreateResult:
        
        active_servers = [
            "https://chat10.fastgpt.me",
            "https://chat9.fastgpt.me",
            "https://chat1.fastgpt.me",
            "https://chat2.fastgpt.me",
            "https://chat3.fastgpt.me",
            "https://chat4.fastgpt.me",
            "https://gxos1h1ddt.fastgpt.me"
        ]
        
        server  = active_servers[kwargs.get("active_server", random.randint(0, 5))]
        headers = {
            "authority"         : f"{server}".replace("https://", ""),
            "accept"            : "text/event-stream",
            "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,fa=0.2",
            "content-type"      : "application/json",
            "origin"            : f"{server}",
            "referer"           : f"{server}/",
            "x-requested-with"  : "XMLHttpRequest",
            'plugins'           : '0',
            'sec-ch-ua'         : '"Chromium";v="116", "Not)A;Brand";v="24", "Google Chrome";v="116"',
            'sec-ch-ua-mobile'  : '?0',
            'sec-ch-ua-platform': '"Windows"',
            'sec-fetch-dest'    : 'empty',
            'sec-fetch-mode'    : 'cors',
            'sec-fetch-site'    : 'same-origin',
            'user-agent'        : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36',
            'usesearch'         : 'false',
            'x-requested-with'  : 'XMLHttpRequest'
        }

        json_data = {
            "messages"          : messages,
            "stream"            : stream,
            "model"             : model,
            "temperature"       : kwargs.get("temperature", 0.5),
            "presence_penalty"  : kwargs.get("presence_penalty", 0),
            "frequency_penalty" : kwargs.get("frequency_penalty", 0),
            "top_p"             : kwargs.get("top_p", 1)
        }

        session = requests.Session()
        # init cookies from server
        session.get(f"{server}/")

        response = session.post(f"{server}/api/openai/v1/chat/completions",
            headers=headers, json=json_data, stream=stream)
        
        if response.status_code == 200:
            
            if stream == False:
                json_data = response.json()
                
                if "choices" in json_data:
                    yield json_data["choices"][0]["message"]["content"]
                else:
                    raise Exception("No response from server")
            
            else:
                
                for chunk in response.iter_lines():
                    
                    if b"content" in chunk:
                        splitData = chunk.decode().split("data:")
                        
                        if len(splitData) > 1:
                            yield json.loads(splitData[1])["choices"][0]["delta"]["content"]
                        else:
                            continue
        else:
            raise Exception(f"Error {response.status_code} from server : {response.reason}")


    @classmethod
    @property
    def params(cls):
        params = [
            ("model", "str"),
            ("messages", "list[dict[str, str]]"),
            ("stream", "bool"),
            ("temperature", "float"),
            ("presence_penalty", "int"),
            ("frequency_penalty", "int"),
            ("top_p", "int"),
            ("active_server", "int"),
        ]
        param = ", ".join([": ".join(p) for p in params])
        return f"g4f.provider.{cls.__name__} supports: ({param})"