"""AnimeEasySync OAuth module"""
from requests import post, codes
from requests.auth import HTTPBasicAuth
from flask import current_app

MAL_TOKEN_URL = 'https://myanimelist.net/v1/oauth2/token'
ANILIST_TOKEN_URL = 'https://anilist.co/api/v2/oauth/token'
KITSU_TOKEN_URL = 'https://kitsu.io/api/oauth/token'

OAUTH_PARAMS = {
    'authorization_code': {
        'required': ['client_id', 'code', 'redirect_uri'],
        'optional': ['code_verifier', 'client_secret']
    },
    'password': {
        'required': ['username', 'password'],
        'optional': []
    },
    'refresh_token': {
        'required': [],
        'optional': []
    }
}


def get_oauth_token(url, grant_type, refresh_token, **kwargs):
    """Gets OAuth Token"""
    print(f'url:{url}, grant_type:{grant_type}, refresh_token:{refresh_token}, kwargs:{kwargs}')
    if not url or grant_type not in OAUTH_PARAMS or None in kwargs.values():
        return None
    data = {'grant_type': grant_type}
    if refresh_token and grant_type == 'refresh_token':
        data['refresh_token'] = refresh_token
        refresh_token = None
    for req in OAUTH_PARAMS[grant_type]['required']:
        if req not in kwargs:
            return None
        data[req] = kwargs[req]
    for opt in OAUTH_PARAMS[grant_type]['optional']:
        if opt in kwargs:
            data[opt] = kwargs[opt]
    request_kwargs = {}
    if 'auth' in kwargs:
        request_kwargs['auth'] = kwargs['auth']
    print(f'data:{data}, request_kwargs:{request_kwargs}')
    response = post(url=url, data=data, **request_kwargs)
    ret = None
    if response.status_code == codes.ok:  # pylint: disable=no-member
        ret = response.json()
    elif response.status_code == codes.unauthorized and refresh_token:  # pylint: disable=no-member
        ret = get_oauth_token(url, 'refresh_token', refresh_token, **kwargs)
    else:
        print(response.json())
    return ret


def refresh_oauth_token(token, url, **kwargs):
    """Refresh token"""
    refresh_token = token['refresh_token']
    new_token = get_oauth_token(url, 'refresh_token', refresh_token, **kwargs)
    token.clear()
    if new_token:
        token.update(new_token)


def refresh_mal_token(token):
    """Refresh MAL token"""
    mal_auth = HTTPBasicAuth(
        current_app.config['MAL_CLIENT_ID'], current_app.config['MAL_CLIENT_SECRET'])
    refresh_oauth_token(token, MAL_TOKEN_URL, auth=mal_auth)


def refresh_anilist_token(token):
    """Refresh Anilist token"""
    refresh_oauth_token(token, ANILIST_TOKEN_URL)


def refresh_kitsu_token(token):
    """Refresh Kitsu token"""
    refresh_oauth_token(token, KITSU_TOKEN_URL)