import dataclasses
import logging
import secrets

from personal_data.data import DeduplicateMode, Scraper

logger = logging.getLogger(__name__)

API_ROOT = 'https://www.crunchyroll.com'
API_URL_TOKEN = API_ROOT + '/auth/v1/token'
API_URL_ME = API_ROOT + '/accounts/v1/me'
API_URL_WATCH_LIST = (
    API_ROOT + '/content/v2/{account_uuid}/watch-history?page_size=100&locale=en-US'
)


@dataclasses.dataclass(frozen=True)
class CrunchyrollScraper(Scraper):
    dataset_name = 'episodes_watched_crunchyroll'
    deduplicate_mode = DeduplicateMode.BY_ALL_COLUMNS

    def scrape(self):
        headers = {
            'Referer': 'https://www.crunchyroll.com/history',
            'Authorization': secrets.CRUNCHYROLL_AUTH,  # TODO: Determine automatically
        }

        # Request to get account UUID
        logger.info('Getting Access Token')
        response = self.session.post(
            API_URL_TOKEN,
            headers=headers,
            cookies=self.session.cookies,
            data={
                'device_id': secrets.CRUNCHYROLL_DEVICE_ID,  # TODO: Determine automatically
                'device_type': 'Firefox on Linux',
                'grant_type': 'etp_rt_cookie',
            },
        )

        response.raise_for_status()
        data_me = response.json()
        headers['Authorization'] = '{} {}'.format(
            data_me['token_type'],
            data_me['access_token'],
        )
        account_uuid = data_me['account_id']

        logger.info('        Account UUID: %s', account_uuid)

        # Request to get watch history
        logger.info('Getting Watchlist')
        response = self.session.get(
            API_URL_WATCH_LIST.format(account_uuid=account_uuid),
            headers=headers,
        )
        response.raise_for_status()

        # Parse data
        episodes_data = response.json()['data']
        logger.info('        Watchlist length: %d', len(episodes_data))

        for episode_data in episodes_data:
            yield {
                # Sorting fields
                'datetime_played': episode_data['date_played'],
                # Important fields
                'series.title': episode_data['panel']['episode_metadata'][
                    'series_title'
                ],
                'season.number': episode_data['panel']['episode_metadata'][
                    'season_number'
                ],
                'episode.number': episode_data['panel']['episode_metadata']['episode'],
                'episode.name': episode_data['panel']['title'],
                # Secondary fields
                'episode.language': episode_data['panel']['episode_metadata'][
                    'audio_locale'
                ],
                'episode.duration_ms': episode_data['panel']['episode_metadata'][
                    'duration_ms'
                ],
                'episode.maturity_ratings': ' '.join(
                    episode_data['panel']['episode_metadata']['maturity_ratings'],
                ),
                'season.title': episode_data['panel']['episode_metadata'][
                    'season_title'
                ],
                'fully_watched': episode_data['fully_watched'],
                # Identifiers
                'episode.crunchyroll_id': episode_data['id'],
                'series.crunchyroll_id': episode_data['parent_id'],
            }