Add projects.validate_delete

apiserver/bll/project/project_bll.py

@@ -554,7 +554,7 @@ class ProjectBLL:
         user_ids: Optional[Sequence[str]] = None,
     ) -> Set[str]:
         """
-        Get the set of user ids that created tasks/models/dataviews in the given projects
+        Get the set of user ids that created tasks/models in the given projects
         If project_ids is empty then all projects are examined
         If user_ids are passed then only subset of these users is returned
         """
@@ -676,8 +676,8 @@ class ProjectBLL:
     @classmethod
     def calc_own_contents(cls, company: str, project_ids: Sequence[str]) -> Dict[str, dict]:
         """
-        Returns the amount of task/dataviews/models per requested project
-        Use separate aggregation calls on Task/Dataview/Model instead of lookup
+        Returns the amount of task/models per requested project
+        Use separate aggregation calls on Task/Model instead of lookup
         aggregation on projects in order not to hit memory limits on large tasks
         """
         if not project_ids:

apiserver/bll/project/project_cleanup.py

@@ -30,6 +30,28 @@ class DeleteProjectResult:
     urls: TaskUrls = None
 
 
+def validate_project_delete(company: str, project_id: str):
+    project = Project.get_for_writing(
+        company=company, id=project_id, _only=("id", "path")
+    )
+    if not project:
+        raise errors.bad_request.InvalidProjectId(id=project_id)
+
+    project_ids = _ids_with_children([project_id])
+    ret = {}
+    for cls in (Task, Model):
+        ret[f"{cls.__name__.lower()}s"] = cls.objects(
+            project__in=project_ids,
+        ).count()
+    for cls in (Task, Model):
+        ret[f"non_archived_{cls.__name__.lower()}s"] = cls.objects(
+            project__in=project_ids,
+            system_tags__nin=[EntityVisibility.archived.value],
+        ).count()
+
+    return ret
+
+
 def delete_project(
     company: str, project_id: str, force: bool, delete_contents: bool
 ) -> Tuple[DeleteProjectResult, Set[str]]: