import asyncio
import json
import logging
from typing import Union

import utils
from database import Marketplace
from limiter import BatchLimiter
from marketplaces.base import BaseMarketplaceApi


class OzonMarketplaceApi(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
        client_id = auth_data.get('clientId')

        self.limiter_key = str(marketplace.company_id) + str(client_id)
        self.headers = {
            'Client-Id': client_id,
            'Api-Key': auth_data.get('clientToken')
        }

    def get_headers(self):
        return self.headers

    @property
    def api_url(self):
        return 'https://api-seller.ozon.ru'

    async def update_stocks(self, data: Union[list, dict]):
        if type(data) is not list:
            return
        if not self.is_valid:
            return
        max_stocks = 100
        chunks = utils.chunk_list(data, max_stocks)
        limiter = BatchLimiter()

        async def send_stock_chunk(chunk):
            if not self.is_valid:
                return
            try:
                await limiter.acquire_ozon(self.limiter_key)
                request_data = {'stocks': chunk}
                response = await self._method('POST', '/v2/products/stocks', data=request_data)
                response = await response.json()
                error_message = response.get('message')
                error_code = response.get('code')
                if error_message:
                    logging.warning(
                        f'Error occurred when sending stocks to [{self.marketplace.id}]: {error_message} ({error_code})')
                    self.is_valid = False
            except Exception as e:
                logging.error(
                    f'Exception occurred while sending stocks to marketplace ID [{self.marketplace.id}]: {str(e)}')
                self.is_valid = False

        tasks = [send_stock_chunk(chunk) for chunk in chunks]
        await asyncio.gather(*tasks)