from __future__ import annotations

import json
import asyncio
from http.cookiejar import CookieJar
from urllib.parse import quote

try:
    from curl_cffi.requests import Session, CurlWsFlag
    has_curl_cffi = True
except ImportError:
    has_curl_cffi = False
try:
    import nodriver
    has_nodriver = True
except ImportError:
    has_nodriver = False

from .base_provider import AbstractProvider, ProviderModelMixin, BaseConversation
from .helper import format_prompt
from ..typing import CreateResult, Messages, ImageType
from ..errors import MissingRequirementsError, NoValidHarFileError
from ..requests.raise_for_status import raise_for_status
from ..providers.asyncio import get_running_loop
from .openai.har_file import get_headers, get_har_files
from ..requests import get_nodriver
from ..image import ImageResponse, to_bytes, is_accepted_format
from .. import debug

class Conversation(BaseConversation):
    conversation_id: str

    def __init__(self, conversation_id: str):
        self.conversation_id = conversation_id

class Copilot(AbstractProvider, ProviderModelMixin):
    label = "Microsoft Copilot"
    url = "https://copilot.microsoft.com"
    working = True
    supports_stream = True
    default_model = "Copilot"
    models = [default_model]
    model_aliases = {
        "gpt-4": "Copilot",
    }

    websocket_url = "wss://copilot.microsoft.com/c/api/chat?api-version=2"
    conversation_url = f"{url}/c/api/conversations"
    
    _access_token: str = None
    _cookies: CookieJar = None

    @classmethod
    def create_completion(
        cls,
        model: str,
        messages: Messages,
        stream: bool = False,
        proxy: str = None,
        timeout: int = 900,
        image: ImageType = None,
        conversation: Conversation = None,
        return_conversation: bool = False,
        web_search: bool = True,
        **kwargs
    ) -> CreateResult:
        if not has_curl_cffi:
            raise MissingRequirementsError('Install or update "curl_cffi" package | pip install -U curl_cffi')

        websocket_url = cls.websocket_url
        headers = None
        if cls.needs_auth or image is not None:
            if cls._access_token is None:
                try:
                    cls._access_token, cls._cookies = readHAR(cls.url)
                except NoValidHarFileError as h:
                    debug.log(f"Copilot: {h}")
                    try:
                        get_running_loop(check_nested=True)
                        cls._access_token, cls._cookies = asyncio.run(get_access_token_and_cookies(cls.url, proxy))
                    except MissingRequirementsError:
                        raise h
            debug.log(f"Copilot: Access token: {cls._access_token[:7]}...{cls._access_token[-5:]}")
            websocket_url = f"{websocket_url}&accessToken={quote(cls._access_token)}"
            headers = {"authorization": f"Bearer {cls._access_token}"}

        with Session(
            timeout=timeout,
            proxy=proxy,
            impersonate="chrome",
            headers=headers,
            cookies=cls._cookies,
        ) as session:
            if cls._access_token is not None:
                cls._cookies = session.cookies.jar
            response = session.get("https://copilot.microsoft.com/c/api/user")
            raise_for_status(response)
            user = response.json().get('firstName')
            if user is None:
                cls._access_token = None
            debug.log(f"Copilot: User: {user or 'null'}")
            if conversation is None:
                response = session.post(cls.conversation_url)
                raise_for_status(response)
                conversation_id = response.json().get("id")
                if return_conversation:
                    yield Conversation(conversation_id)
                prompt = format_prompt(messages)
                debug.log(f"Copilot: Created conversation: {conversation_id}")
            else:
                conversation_id = conversation.conversation_id
                prompt = messages[-1]["content"]
                debug.log(f"Copilot: Use conversation: {conversation_id}")

            images = []
            if image is not None:
                data = to_bytes(image)
                response = session.post(
                    "https://copilot.microsoft.com/c/api/attachments",
                    headers={"content-type": is_accepted_format(data)},
                    data=data
                )
                raise_for_status(response)
                images.append({"type":"image", "url": response.json().get("url")})

            wss = session.ws_connect(cls.websocket_url)
            wss.send(json.dumps({
                "event": "send",
                "conversationId": conversation_id,
                "content": [*images, {
                    "type": "text",
                    "text": prompt,
                }],
                "mode": "chat"
            }).encode(), CurlWsFlag.TEXT)

            is_started = False
            msg = None
            image_prompt: str = None
            last_msg = None
            while True:
                try:
                    msg = wss.recv()[0]
                    msg = json.loads(msg)
                except:
                    break
                last_msg = msg
                if msg.get("event") == "appendText":
                    is_started = True
                    yield msg.get("text")
                elif msg.get("event") == "generatingImage":
                    image_prompt = msg.get("prompt")
                elif msg.get("event") == "imageGenerated":
                    yield ImageResponse(msg.get("url"), image_prompt, {"preview": msg.get("thumbnailUrl")})
                elif msg.get("event") == "done":
                    break
                elif msg.get("event") == "error":
                    raise RuntimeError(f"Error: {msg}")
                elif msg.get("event") not in ["received", "startMessage", "citation", "partCompleted"]:
                    debug.log(f"Copilot Message: {msg}")
            if not is_started:
                raise RuntimeError(f"Invalid response: {last_msg}")

async def get_access_token_and_cookies(url: str, proxy: str = None, target: str = "ChatAI",):
    browser = await get_nodriver(proxy=proxy, user_data_dir="copilot")
    page = await browser.get(url)
    access_token = None
    while access_token is None:
        access_token = await page.evaluate("""
            (() => {
                for (var i = 0; i < localStorage.length; i++) {
                    try {
                        item = JSON.parse(localStorage.getItem(localStorage.key(i)));
                        if (item.credentialType == "AccessToken" 
                            && item.expiresOn > Math.floor(Date.now() / 1000)
                            && item.target.includes("target")) {
                            return item.secret;
                        }
                    } catch(e) {}
                }
            })()
        """.replace('"target"', json.dumps(target)))
        if access_token is None:
            await asyncio.sleep(1)
    cookies = {}
    for c in await page.send(nodriver.cdp.network.get_cookies([url])):
        cookies[c.name] = c.value
    await page.close()
    return access_token, cookies

def readHAR(url: str):
    api_key = None
    cookies = None
    for path in get_har_files():
        with open(path, 'rb') as file:
            try:
                harFile = json.loads(file.read())
            except json.JSONDecodeError:
                # Error: not a HAR file!
                continue
            for v in harFile['log']['entries']:
                if v['request']['url'].startswith(url):
                    v_headers = get_headers(v)
                    if "authorization" in v_headers:
                        api_key = v_headers["authorization"].split(maxsplit=1).pop()
                    if v['request']['cookies']:
                        cookies = {c['name']: c['value'] for c in v['request']['cookies']}
    if api_key is None:
        raise NoValidHarFileError("No access token found in .har files")

    return api_key, cookies