feat(workspaces): add current user rates endpoint

apps/workspaces/tests/test_api_permissions.py

@@ -4,6 +4,7 @@ from django.core.cache import cache
 from django.test import TestCase
 from rest_framework.test import APITestCase
 
+from apps.projects.models import Project, ProjectAccess, ProjectUserRate
 from apps.users.models import User
 from apps.workspaces.api.permissions import (
     CanWorkspaceManageMembers,
@@ -11,7 +12,7 @@ from apps.workspaces.api.permissions import (
     IsWorkspaceMember,
     IsWorkspaceOwner,
 )
-from apps.workspaces.models import Workspace, WorkspaceMembership
+from apps.workspaces.models import PriceUnit, Workspace, WorkspaceMembership, WorkspaceUserRate
 
 
 class WorkspacePermissionTests(TestCase):
@@ -189,3 +190,48 @@ class WorkspaceMembershipCacheTests(APITestCase):
         target = next(item for item in fresh_response.data["items"] if item["id"] == str(self.membership.id))
         self.assertEqual(target["role"], WorkspaceMembership.Role.GUEST)
         self.assertFalse(target["is_active"])
+
+
+class WorkspaceMyRatesApiTests(APITestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.owner = User.objects.create_user(mobile="09127770101", password="secret123")
+        cls.member = User.objects.create_user(mobile="09127770102", password="secret123")
+        cls.workspace = Workspace.objects.create(name="Rates View", owner=cls.owner)
+        WorkspaceMembership.objects.create(
+            workspace=cls.workspace,
+            user=cls.member,
+            role=WorkspaceMembership.Role.MEMBER,
+            is_active=True,
+        )
+        PriceUnit.objects.create(code="USD", name="US Dollar", local_name="Dollar", symbol="$")
+        cls.project = Project.objects.create(workspace=cls.workspace, name="Mobile App")
+        ProjectAccess.objects.create(project=cls.project, user=cls.member)
+        WorkspaceUserRate.objects.create(
+            workspace=cls.workspace,
+            user=cls.member,
+            hourly_rate="10.00",
+            currency="USD",
+            effective_from=cls.workspace.created_at,
+            is_active=True,
+        )
+        ProjectUserRate.objects.create(
+            project=cls.project,
+            user=cls.member,
+            hourly_rate="18.00",
+            currency="USD",
+            effective_from=cls.workspace.created_at,
+            is_active=True,
+        )
+
+    def test_member_can_view_own_workspace_and_project_rates(self):
+        self.client.force_authenticate(user=self.member)
+
+        response = self.client.get(f"/api/workspaces/{self.workspace.id}/my-rates/")
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data["workspace_rate"]["hourly_rate"], "10.00")
+        self.assertEqual(response.data["project_override_count"], 1)
+        self.assertEqual(response.data["workspace_fallback_project_count"], 0)
+        self.assertEqual(response.data["project_rates"][0]["project"]["name"], "Mobile App")
+        self.assertEqual(response.data["project_rates"][0]["rate"]["hourly_rate"], "18.00")