import requests

from django.urls import reverse

from allauth.account import app_settings
from allauth.socialaccount.providers.oauth2.views import (
    OAuth2Adapter,
    OAuth2CallbackView,
    OAuth2LoginView,
)
from allauth.utils import build_absolute_uri

from .client import WeixinOAuth2Client
from .provider import WeixinProvider


class WeixinOAuth2Adapter(OAuth2Adapter):
    provider_id = WeixinProvider.id
    access_token_url = "https://api.weixin.qq.com/sns/oauth2/access_token"
    profile_url = "https://api.weixin.qq.com/sns/userinfo"

    @property
    def authorize_url(self):
        settings = self.get_provider().get_settings()
        url = settings.get(
            "AUTHORIZE_URL", "https://open.weixin.qq.com/connect/qrconnect"
        )
        return url

    def complete_login(self, request, app, token, **kwargs):
        openid = kwargs.get("response", {}).get("openid")
        resp = requests.get(
            self.profile_url,
            params={"access_token": token.token, "openid": openid},
        )
        extra_data = resp.json()
        nickname = extra_data.get("nickname")
        if nickname:
            extra_data["nickname"] = nickname.encode("raw_unicode_escape").decode(
                "utf-8"
            )
        return self.get_provider().sociallogin_from_response(request, extra_data)


class WeixinOAuth2ClientMixin(object):
    def get_client(self, request, app):
        callback_url = reverse(self.adapter.provider_id + "_callback")
        protocol = (
            self.adapter.redirect_uri_protocol or app_settings.DEFAULT_HTTP_PROTOCOL
        )
        callback_url = build_absolute_uri(request, callback_url, protocol=protocol)
        provider = self.adapter.get_provider()
        scope = provider.get_scope(request)
        client = WeixinOAuth2Client(
            request,
            app.client_id,
            app.secret,
            self.adapter.access_token_method,
            self.adapter.access_token_url,
            callback_url,
            scope,
        )
        return client


class WeixinOAuth2LoginView(WeixinOAuth2ClientMixin, OAuth2LoginView):
    pass


class WeixinOAuth2CallbackView(WeixinOAuth2ClientMixin, OAuth2CallbackView):
    pass


oauth2_login = WeixinOAuth2LoginView.adapter_view(WeixinOAuth2Adapter)
oauth2_callback = WeixinOAuth2CallbackView.adapter_view(WeixinOAuth2Adapter)
