from __future__ import unicode_literals

from allauth.socialaccount.providers.base import ProviderAccount
from allauth.socialaccount.providers.oauth2.provider import OAuth2Provider


class YahooAccount(ProviderAccount):

    def to_str(self):
        name = '{0} {1}'.format(
            self.account.extra_data['profile'].get('givenName', ''),
            self.account.extra_data['profile'].get('familyName', '')
        )
        if name.strip() != '':
            return name
        return super(YahooAccount, self).to_str()


class YahooProvider(OAuth2Provider):
    id = str('yahoo')
    name = 'Yahoo'
    account_class = YahooAccount

    def get_default_scope(self):
        """
        Doc on scopes available at
        https://developer.yahoo.com/oauth2/guide/yahoo_scopes/
        """
        return ['sdps-r']

    def extract_uid(self, data):
        return str(data['profile']['guid'])

    def extract_common_fields(self, data):
        emails = data['profile'].get('emails')
        if emails:
            email = emails[0]['handle']
        else:
            email = None

        return dict(email=email,
                    last_name=data['profile'].get('familyName'),
                    first_name=data['profile'].get('givenName'))


provider_classes = [YahooProvider]