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


class StackExchangeAccount(ProviderAccount):
    def get_profile_url(self):
        return self.account.extra_data.get("html_url")

    def get_avatar_url(self):
        return self.account.extra_data.get("avatar_url")

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


class StackExchangeProvider(OAuth2Provider):
    id = "stackexchange"
    name = "Stack Exchange"
    account_class = StackExchangeAccount

    def get_site(self):
        settings = self.get_settings()
        return settings.get("SITE", "stackoverflow")

    def extract_uid(self, data):
        # `user_id` varies if you use the same account for
        # e.g. StackOverflow and ServerFault. Therefore, we pick
        # `account_id`.
        uid = str(data["account_id"])
        return uid

    def extract_common_fields(self, data):
        return dict(username=data.get("display_name"))


provider_classes = [StackExchangeProvider]