import datetime
import os
from typing import List, Optional

import requests


from nebula_rss import NebulaVideo


class NebulaLoader:
    def __init__(
        self,
        username: str,
        password: str,
        driver_path: Optional[os.PathLike] = None
    ):
        self.username = username
        self.password = password
        self.session = requests.Session()

    @staticmethod
    def _parse_api_response(api_video) -> NebulaVideo:
        title = api_video['title']
        creator = api_video['channel_title']
        url = api_video['share_url']
        published_at = datetime.datetime.strptime(
            api_video['published_at'],
            "%Y-%m-%dT%H:%M:%S%z")
        return NebulaVideo(title, creator, url, published_at)

    def load_from_api(self):
        api_base = 'https://api.watchnebula.com/api/v1'
        user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)'\
                     ' AppleWebKit/605.1.15 (KHTML, like Gecko)'\
                     'Version/15.2 Safari/605.1.15'
        headers = {
            'User-Agent': user_agent,
            'Nebula-Platform': 'web'
        }
        login_data = {
            'email': self.username,
            'password': self.password
        }
        self.session.headers.update(headers)
        login_response = self.session.post(
            api_base+'/auth/login/',
            json=login_data)
        login_token = login_response.json()['key']
        token_header = {
            'Authorization': 'Token ' + login_token
        }
        self.session.headers.update(token_header)

        auth_response = self.session.post(api_base+'/authorization/', json={})
        jwt = auth_response.json()['token']
        token_header['Authorization'] = 'Bearer ' + jwt
        self.session.headers.update(token_header)

        videos_response = self.session.get(
            'https://content.watchnebula.com/library/video/?page=1')
        return [NebulaLoader._parse_api_response(v)
                for v in videos_response.json()['results']]

    def load(self) -> List[NebulaVideo]:
        return self.load_from_api()