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


class VKAccount(ProviderAccount):
    def get_profile_url(self):
        return "https://vk.com/id%s" % self.account.extra_data.get("id")

    def get_avatar_url(self):
        ret = None
        photo_big_url = self.account.extra_data.get("photo_big")
        photo_medium_url = self.account.extra_data.get("photo_medium")
        if photo_big_url:
            return photo_big_url
        elif photo_medium_url:
            return photo_medium_url
        else:
            return ret

    def to_str(self):
        first_name = self.account.extra_data.get("first_name", "")
        last_name = self.account.extra_data.get("last_name", "")
        name = " ".join([first_name, last_name]).strip()
        return name or super(VKAccount, self).to_str()


class VKProvider(OAuth2Provider):
    id = "vk"
    name = "VK"
    account_class = VKAccount

    def get_default_scope(self):
        scope = []
        if app_settings.QUERY_EMAIL:
            scope.append("email")
        return scope

    def extract_uid(self, data):
        return str(data["id"])

    def extract_common_fields(self, data):
        return dict(
            email=data.get("email"),
            last_name=data.get("last_name"),
            username=data.get("screen_name"),
            first_name=data.get("first_name"),
        )


provider_classes = [VKProvider]