add proper handling of already created users

commcare_connect/opportunity/api/views.py

@@ -17,6 +17,7 @@
     UserVisit,
 )
 from commcare_connect.users.helpers import create_hq_user
+from commcare_connect.users.models import ConnectIDUserLink
 
 
 class OpportunityViewSet(viewsets.ReadOnlyModelViewSet):
@@ -64,7 +65,12 @@ def post(self, *args, **kwargs):
         if not created:
             return Response(status=200, data="Opportunity is already claimed")
 
-        if opportunity.learn_app.cc_domain != opportunity.deliver_app.cc_domain:
-            create_hq_user(self.request.user, opportunity.deliver_app.cc_domain, opportunity.api_key)
-
+        domain = opportunity.deliver_app.cc_domain
+        if not ConnectIDUserLink.objects.filter(user=self.request.user, domain=domain).exists():
+            user_created = create_hq_user(self.request.user, domain, opportunity.api_key)
+            if not user_created:
+                return Response("Failed to create user", status=400)
+            ConnectIDUserLink.objects.create(
+                commcare_username=self.request.user.username, user=self.request.user, domain=domain
+            )
         return Response(status=201)

commcare_connect/users/migrations/0011_connectiduserlink_domain.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.5 on 2023-09-28 19:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("users", "0010_user_phone_number"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="connectiduserlink",
+            name="domain",
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+    ]

commcare_connect/users/models.py

@@ -61,6 +61,7 @@ class ConnectIDUserLink(models.Model):
         on_delete=models.CASCADE,
     )
     commcare_username = models.TextField()
+    domain = models.CharField(max_length=255, null=True, blank=True)
 
     class Meta:
         constraints = [models.UniqueConstraint(fields=["user", "commcare_username"], name="connect_user")]

commcare_connect/users/views.py

@@ -94,10 +94,11 @@ def start_learn_app(request):
         return HttpResponse("Opportunity requires API Key", status=400)
     app = opportunity.learn_app
     domain = app.cc_domain
-    user_created = create_hq_user(request.user, domain, api_key)
-    if not user_created:
-        return HttpResponse("Failed to create user", status=400)
-    ConnectIDUserLink.objects.create(commcare_username=request.user.username, user=request.user)
+    if not ConnectIDUserLink.objects.filter(user=request.user, domain=domain).exists():
+        user_created = create_hq_user(request.user, domain, api_key)
+        if not user_created:
+            return HttpResponse("Failed to create user", status=400)
+        ConnectIDUserLink.objects.create(commcare_username=request.user.username, user=request.user, domain=domain)
     try:
         access_object = OpportunityAccess.objects.get(user=request.user, opportunity=opportunity)
     except OpportunityAccess.DoesNotExist: