Add server-backed file property filters

src/govoplan_files/backend/routes/listing.py

@@ -11,6 +11,7 @@ from govoplan_files.backend.schemas import (
 )
 from govoplan_core.db.session import get_session
 from govoplan_files.backend.storage.files import (
+    count_assets_for_user,
     list_assets_for_user,
     list_assets_for_user_window,
 )
@@ -76,6 +77,8 @@ def list_files(
     owner_id: str | None = None,
     campaign_id: str | None = None,
     path_prefix: str | None = None,
+    campaign_usage: Literal["linked", "unlinked"] | None = None,
+    audit_relevant: bool | None = None,
     page_size: int | None = Query(default=None, ge=1, le=1000),
     cursor: str | None = None,
     session: Session = Depends(get_session),
@@ -84,6 +87,18 @@ def list_files(
     _ensure_list_owner_access(session, principal, owner_type, owner_id)
     _ensure_campaign_file_access(session, principal, campaign_id)
     watermark = _files_delta_watermark(session, principal.tenant_id)
+    total = count_assets_for_user(
+        session,
+        tenant_id=principal.tenant_id,
+        user_id=principal.user.id,
+        owner_type=owner_type,
+        owner_id=owner_id,
+        campaign_id=campaign_id,
+        path_prefix=path_prefix,
+        campaign_usage=campaign_usage,
+        audit_relevant=audit_relevant,
+        is_admin=_is_admin(principal),
+    )
     effective_page_size = _cursor_page_size(FILES_LIST_CURSOR_SCOPE, cursor, page_size)
     if effective_page_size is not None:
         fingerprint = _files_list_fingerprint(
@@ -92,6 +107,8 @@ def list_files(
             owner_id=owner_id,
             campaign_id=campaign_id,
             path_prefix=path_prefix,
+            campaign_usage=campaign_usage,
+            audit_relevant=audit_relevant,
             page_size=effective_page_size,
         )
         after_display_path, after_updated_at, after_id = _file_cursor_values(
@@ -105,6 +122,8 @@ def list_files(
             owner_id=owner_id,
             campaign_id=campaign_id,
             path_prefix=path_prefix,
+            campaign_usage=campaign_usage,
+            audit_relevant=audit_relevant,
             is_admin=_is_admin(principal),
             page_size=effective_page_size,
             after_display_path=after_display_path,
@@ -113,6 +132,7 @@ def list_files(
         )
         return FileListResponse(
             files=_asset_list_response(session, assets, include_shares=True),
+            total=total,
             cursor=cursor,
             next_cursor=_next_file_list_cursor(
                 principal,
@@ -121,6 +141,8 @@ def list_files(
                 owner_id=owner_id,
                 campaign_id=campaign_id,
                 path_prefix=path_prefix,
+                campaign_usage=campaign_usage,
+                audit_relevant=audit_relevant,
                 page_size=effective_page_size,
                 has_more=has_more,
             ),
@@ -134,9 +156,12 @@ def list_files(
         owner_id=owner_id,
         campaign_id=campaign_id,
         path_prefix=path_prefix,
+        campaign_usage=campaign_usage,
+        audit_relevant=audit_relevant,
         is_admin=_is_admin(principal),
     )
     return FileListResponse(
         files=_asset_list_response(session, assets, include_shares=True),
+        total=total,
         watermark=watermark,
     )