from allauth.socialaccount import app_settings
from allauth.socialaccount.providers.base import (
    ProviderAccount,
    ProviderException,
)
from allauth.socialaccount.providers.oauth2.provider import OAuth2Provider


class GlobusAccount(ProviderAccount):

    def get_profile_url(self):
        return self.account.extra_data.get('web_url', 'dflt')

    def get_avatar_url(self):
        return self.account.extra_data.get('avatar_url', 'dflt')

    def to_str(self):
        dflt = super(GlobusAccount, self).to_str()
        return self.account.extra_data.get('name', dflt)


class GlobusProvider(OAuth2Provider):
    id = 'globus'
    name = 'Globus'
    account_class = GlobusAccount

    def extract_uid(self, data):
        if 'sub' not in data:
            raise ProviderException(
                'Globus OAuth error', data
            )
        return str(data['sub'])

    def extract_common_fields(self, data):
        return dict(
            email=data.get('email'),
            username=data.get('preferred_username'),
            name=data.get('name'),
        )

    def get_default_scope(self):
        scope = ['openid', 'profile', 'offline_access']
        if app_settings.QUERY_EMAIL:
            scope.append('email')
        return scope


provider_classes = [GlobusProvider]
