Add YoutubeCredentials model and implement YouTube OAuth login functionality

game/views.py

@@ -1,5 +1,7 @@
 import random
 
+import google_auth_oauthlib
+from django.conf import settings
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.db.models import Count, Q
 from django.http import JsonResponse
@@ -137,3 +139,42 @@ class GameDetailView(LoginRequiredMixin, DetailView):
 
     def get_queryset(self):
         return super().get_queryset().filter(group__owner=self.request.user)
+
+
+class YoutubeLoginView(LoginRequiredMixin, View):
+    def get(self, request):
+        flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
+            settings.YOUTUBE_OAUTH_SECRETS,
+            ["https://www.googleapis.com/auth/youtube.force-ssl"],
+        )
+        flow.redirect_uri = "https://localhost/youtube_callback/"
+        auth_url, state = flow.authorization_url(
+            access_type="offline",
+            include_granted_scopes="true",
+            prompt="consent",
+        )
+        self.request.session["state"] = state
+        return redirect(auth_url)
+
+
+class YoutubeCallbackView(LoginRequiredMixin, View):
+    def get(self, request):
+        if request.GET.get("error"):
+            return redirect("/")
+        print(request.GET)
+
+        state = self.request.session.get("state")
+        flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
+            settings.YOUTUBE_OAUTH_SECRETS,
+            ["https://www.googleapis.com/auth/youtube.force-ssl"],
+            state=state,
+        )
+        flow.redirect_uri = "https://localhost/youtube_callback/"
+
+        flow.fetch_token(code=request.GET.get("code"))
+
+        credentials = models.YoutubeCredentials(
+            user=request.user, credentials=flow.credentials.to_json()
+        )
+        credentials.save()
+        return redirect("/")