feat(pricing): add workspace user rates and price units

apps/time_entries/services/rates.py

@@ -1,22 +1,15 @@
-from apps.projects.models import ProjectRate, ProjectUserRate
-
-
-def resolve_rate(user, project):
-    user_rate = ProjectUserRate.objects.filter(
-        user=user,
-        project=project,
-        is_active=True,
-    ).order_by("-effective_from").first()
-
-    if user_rate:
-        return user_rate.hourly_rate, user_rate.currency
-
-    project_rate = ProjectRate.objects.filter(
-        project=project,
-        is_active=True,
-    ).order_by("-effective_from").first()
-
-    if project_rate:
-        return project_rate.hourly_rate, project_rate.currency
-
-    return None, "USD"
+from apps.workspaces.models import WorkspaceUserRate
+
+
+def resolve_rate(user, project):
+    workspace_user_rate = WorkspaceUserRate.objects.filter(
+        user=user,
+        workspace=project.workspace,
+        is_active=True,
+        is_deleted=False,
+    ).order_by("-effective_from").first()
+
+    if workspace_user_rate:
+        return workspace_user_rate.hourly_rate, workspace_user_rate.currency
+
+    return None, ""