Feature: Implement statistics endpoint

backend/src/contaxy/api/endpoints/system.py

@@ -69,12 +69,15 @@ def check_health(
     responses={**AUTH_ERROR_RESPONSES},
 )
 def get_system_statistics(
+    include_technical: bool = True,
     component_manager: ComponentManager = Depends(get_component_manager),
     token: str = Depends(get_api_token),
 ) -> Any:
     """Returns statistics about this instance."""
     component_manager.verify_access(token, "system", AccessLevel.READ)
-    return component_manager.get_system_manager().get_system_statistics()
+    return component_manager.get_system_manager().get_system_statistics(
+        include_technical
+    )
 
 
 @router.post(

backend/src/contaxy/clients/system.py

@@ -22,8 +22,14 @@ def is_healthy(self, request_kwargs: Dict = {}) -> bool:
         handle_errors(response)
         return True
 
-    def get_system_statistics(self, request_kwargs: Dict = {}) -> SystemStatistics:
-        response = self._client.get("/system/statistics", **request_kwargs)
+    def get_system_statistics(
+        self, include_technical: bool = True, request_kwargs: Dict = {}
+    ) -> SystemStatistics:
+        response = self._client.get(
+            "/system/statistics",
+            params={"include_technical": include_technical},
+            **request_kwargs,
+        )
         handle_errors(response)
         return parse_raw_as(SystemStatistics, response.text)
 

backend/src/contaxy/managers/components.py

@@ -160,6 +160,9 @@ def get_system_manager(self) -> SystemManager:
                 self.get_json_db_manager(),
                 self.get_auth_manager(),
                 self.get_project_manager(),
+                self.get_service_manager(),
+                self.get_job_manager(),
+                self.get_file_manager(),
             )
 
         assert self._system_manager is not None

backend/src/contaxy/managers/system.py

@@ -1,13 +1,25 @@
-from typing import Optional
+from typing import List, Optional
 
 from contaxy import __version__, config
 from contaxy.config import settings
 from contaxy.managers.auth import AuthManager
-from contaxy.operations import SystemOperations
+from contaxy.operations import (
+    FileOperations,
+    JobOperations,
+    ServiceOperations,
+    SystemOperations,
+)
 from contaxy.operations.json_db import JsonDocumentOperations
 from contaxy.operations.project import ProjectOperations
-from contaxy.schema.auth import ADMIN_ROLE, USERS_KIND, AccessLevel, UserRegistration
-from contaxy.schema.project import ProjectCreation
+from contaxy.schema import File, Job, Service
+from contaxy.schema.auth import (
+    ADMIN_ROLE,
+    USERS_KIND,
+    AccessLevel,
+    User,
+    UserRegistration,
+)
+from contaxy.schema.project import Project, ProjectCreation
 from contaxy.schema.system import SystemInfo, SystemStatistics
 from contaxy.utils import auth_utils
 from contaxy.utils.state_utils import GlobalState, RequestState
@@ -23,6 +35,9 @@ def __init__(
         json_db_manager: JsonDocumentOperations,
         auth_manager: AuthManager,
         project_manager: ProjectOperations,
+        service_manager: ServiceOperations,
+        job_manager: JobOperations,
+        file_manager: FileOperations,
     ):
         """Initializes the system manager.
 
@@ -32,12 +47,18 @@ def __init__(
             json_db_manager: Json document manager instance.
             auth_manager: Auth manager instance.
             project_manager: Project manager instance.
+            service_manager: Service manager instance.
+            job_manager: Job manager instance.
+            file_manager: File manager instance.
         """
         self._global_state = global_state
         self._request_state = request_state
         self._auth_manager = auth_manager
         self._project_manager = project_manager
         self._json_db_manager = json_db_manager
+        self._service_manager = service_manager
+        self._job_manager = job_manager
+        self._file_manager = file_manager
 
     def get_system_info(self) -> SystemInfo:
         return SystemInfo(
@@ -49,10 +70,18 @@ def is_healthy(self) -> bool:
         # TODO: do real healthchecks
         return True
 
-    def get_system_statistics(self) -> SystemStatistics:
-        # TODO: Implement system statistics
+    def get_system_statistics(self, include_technical: bool) -> SystemStatistics:
+        projects = self._list_all_projects(include_technical)
+        users = self._list_all_users(include_technical)
+        jobs = self._list_all_jobs(projects)
+        services = self._list_all_services(projects)
+        files = self._list_all_files(projects)
         return SystemStatistics(
-            project_count=0, user_count=0, job_count=0, service_count=0, file_count=0
+            project_count=len(jobs),
+            user_count=len(users),
+            job_count=len(jobs),
+            service_count=len(services),
+            file_count=len(files),
         )
 
     def initialize_system(
@@ -103,3 +132,45 @@ def initialize_system(
         )
 
         auth_utils.create_user_project(admin_user, self._project_manager)
+
+    def _list_all_projects(self, include_technical: bool) -> List[Project]:
+        # Temporarily set authorized_access to None so that list_projects returns all projects
+        # TODO: Find better solution to get all projects
+        temp = self._request_state.authorized_access
+        self._request_state.authorized_access = None
+        projects = self._project_manager.list_projects()
+        self._request_state.authorized_access = temp
+
+        if not include_technical:
+            projects = [proj for proj in projects if not proj.technical_project]
+        return projects
+
+    def _list_all_users(self, include_technical: bool) -> List[User]:
+        users = self._auth_manager.list_users()
+        if not include_technical:
+            users = [user for user in users if not user.technical_user]
+        return users
+
+    def _list_all_jobs(self, projects: List[Project]) -> List[Job]:
+        return [
+            job
+            for project in projects
+            if project.id
+            for job in self._job_manager.list_jobs(project.id)
+        ]
+
+    def _list_all_services(self, projects: List[Project]) -> List[Service]:
+        return [
+            service
+            for project in projects
+            if project.id
+            for service in self._service_manager.list_services(project.id)
+        ]
+
+    def _list_all_files(self, projects: List[Project]) -> List[File]:
+        return [
+            file
+            for project in projects
+            if project.id
+            for file in self._file_manager.list_files(project.id)
+        ]

backend/src/contaxy/operations/system.py

@@ -13,7 +13,7 @@ def is_healthy(self) -> bool:
         pass
 
     @abstractmethod
-    def get_system_statistics(self) -> SystemStatistics:
+    def get_system_statistics(self, include_technical: bool) -> SystemStatistics:
         pass
 
     @abstractmethod