import asyncio
import json
import logging
from typing import Union

from backend.config import YANDEX_CLIENT_ID
from database import Marketplace
from limiter import BatchLimiter
from marketplaces.base import BaseMarketplaceApi
from utils import chunk_list


class YandexmarketMarketplaceApi(BaseMarketplaceApi):
    def __init__(self, marketplace: Marketplace):
        self.marketplace = marketplace
        self.is_valid = True
        try:
            auth_data = json.loads(marketplace.auth_data)
        except Exception:
            logging.error(f"Couldn't load auth data for marketplace [{self.marketplace.id}]")
            self.is_valid = False
            return
        access_token = auth_data.get('accessToken')

        self.limiter_key = str(marketplace.company_id) + str(access_token) + str(self.marketplace.campaign_id)

        self.headers = {
            'Authorization': f'OAuth oauth_token="{access_token}", oauth_client_id="{YANDEX_CLIENT_ID}"'
        }

    def get_headers(self):
        return self.headers

    @property
    def api_url(self):
        return 'https://api.partner.market.yandex.ru/v2'

    async def update_stocks(self, data: Union[list, dict]):
        if type(data) is not list:
            return
        if not self.is_valid:
            return
        campaign_id = self.marketplace.campaign_id
        max_stocks = 2000
        chunks = chunk_list(data, max_stocks)
        if not chunks:
            return
        limiter = BatchLimiter()

        async def send_stock_chunk(chunk):
            try:
                await limiter.acquire_yandexmarket(self.limiter_key)
                request_data = {
                    'skus': chunk
                }
                response = await self._method('PUT',
                                              f'/campaigns/{campaign_id}/offers/stocks',
                                              data=request_data)
                if response.status != 200:
                    logging.warning(
                        f'Error occurred when sending stocks to [{self.marketplace.id}]')
                    return False
                return True
            except Exception as e:
                logging.error(
                    f'Exception occurred while sending stocks to marketplace ID [{self.marketplace.id}]: {str(e)}')
                return False

        tasks = [send_stock_chunk(chunk) for chunk in chunks]
        first_request = tasks[0]
        first_response = await first_request
        if not first_response:
            logging.error(f'Skipping marketplace [{self.marketplace.id}] because first request was unsuccessful')
            return

        await asyncio.gather(*tasks[1:])