import os
import errno
import requests
import json
import datetime

import config
import blizzard
import spec

def log(*data):
    print(datetime.datetime.now(), '|', *data)

class Test(object):
    def __init__(self):
        self.http = requests.Session()
        self.credentials = blizzard.get_credentials(config.pwd)

    def region_oauth(self, region: str) -> dict:
        api = self.http.post(f"{blizzard.get_bnet_host(region)}/oauth/token", data={'grant_type': 'client_credentials'}, auth=self.credentials)
        oauth = api.json()
        log(region, oauth)
        api.raise_for_status()
        return oauth

    def api_call(self, url: str, headers=None) -> requests.Response:
        api = self.http.get(url, headers=headers) #, headers={'Authorization': f"Authorization: Token {access_token}"})
        api.raise_for_status()
        return api

    def create_dst(self, dst: str):
        try:
            os.makedirs(os.path.dirname(dst))
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise

    def save(self, dst, content):
        with open(dst, 'w+') as f:
            f.write(json.dumps(content.json(), indent=4))

    def download_if_modified(self, path, namespace, region, locale, headers=None):
        oauth = self.region_oauth(region)
        access_token = oauth['access_token']

        dst = f"{config.pwd}/test.{region}.{locale}.{path.replace('/', '_')}.{namespace}.json"

        url = f"{blizzard.get_api_host(region)}{path}"
        url += f"?namespace={namespace}-{region}&locale={locale}&access_token={access_token}"

        log('*', url)
        response = self.api_call(url, headers)

        log('>', response.request.headers)
        log('<', response.headers)
        log(response.status_code)
        return response.headers['Last-Modified']

if __name__ == "__main__":
    test = Test()
    lm = test.download_if_modified('/data/wow/achievement/index', 'static', 'eu', 'es_ES')
    test.download_if_modified('/data/wow/achievement/index', 'static', 'eu', 'es_ES', headers={'If-Modified-Since': lm})
    test.download_if_modified('/data/wow/achievement/index', 'static', 'eu', 'es_ES', headers={'If-Modified-Since': lm})
    test.download_if_modified('/data/wow/achievement/index', 'static', 'eu', 'es_ES', headers={'If-Modified-Since': lm})