✨ Many improvements to the database layer.

- Proper handling of referenced tables deletion.
- Proper handling of storage referenced tables deletion.
- Remove of obsolete tables and triggers.

backend/src/app/migrations/sql/0003-add-project-tables.sql

@@ -106,8 +106,6 @@ CREATE TRIGGER file_image__on_delete__tgr
  AFTER DELETE ON file_image
    FOR EACH ROW EXECUTE PROCEDURE handle_delete();
 
-
-
 CREATE TABLE page (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   file_id uuid NOT NULL REFERENCES file(id) ON DELETE CASCADE,

backend/src/app/migrations/sql/0036-mod-storage-referenced-tables.sql

@@ -1,8 +1,3 @@
--- Complete migration consists of:
--- - Move all file_media_objects and file_media_thumbnail to new storage.
--- - Replace the relative paths to the storage id's on all files/pages.
--- - Adapt frontend code to properly resolve url using the ids instead of paths.
-
 -- Profile
 ALTER TABLE profile ADD COLUMN photo_id uuid NULL REFERENCES storage_object(id) ON DELETE SET NULL;
 CREATE INDEX profile__photo_id__idx ON profile(photo_id);

backend/src/app/migrations/sql/0037-del-obsolete-triggers.sql

@@ -0,0 +1,3 @@
+DROP FUNCTION update_modified_at () CASCADE;
+DROP FUNCTION handle_delete ( ) CASCADE;
+DROP TABLE pending_to_delete;

backend/src/app/migrations/sql/0038-add-storage-on-delete-triggers.sql

@@ -0,0 +1,50 @@
+CREATE FUNCTION on_delete_profile()
+  RETURNS TRIGGER AS $func$
+  BEGIN
+    UPDATE storage_object
+       SET deleted_at = now()
+     WHERE id = OLD.photo_id;
+
+    RETURN OLD;
+  END;
+$func$ LANGUAGE plpgsql;
+
+CREATE FUNCTION on_delete_team()
+  RETURNS TRIGGER AS $func$
+  BEGIN
+    UPDATE storage_object
+       SET deleted_at = now()
+     WHERE id = OLD.photo_id;
+
+    RETURN OLD;
+  END;
+$func$ LANGUAGE plpgsql;
+
+CREATE FUNCTION on_delete_file_media_object()
+  RETURNS TRIGGER AS $func$
+  BEGIN
+    UPDATE storage_object
+       SET deleted_at = now()
+     WHERE id = OLD.media_id;
+
+    IF OLD.thumbnail_id IS NOT NULL THEN
+      UPDATE storage_object
+         SET deleted_at = now()
+       WHERE id = OLD.thumbnail_id;
+    END IF;
+
+    RETURN OLD;
+  END;
+$func$ LANGUAGE plpgsql;
+
+CREATE TRIGGER profile__on_delete__tgr
+ AFTER DELETE ON profile
+   FOR EACH ROW EXECUTE PROCEDURE on_delete_profile();
+
+CREATE TRIGGER team__on_delete__tgr
+ AFTER DELETE ON team
+   FOR EACH ROW EXECUTE PROCEDURE on_delete_team();
+
+CREATE TRIGGER file_media_object__on_delete__tgr
+ AFTER DELETE ON file_media_object
+   FOR EACH ROW EXECUTE PROCEDURE on_delete_file_media_object();

backend/src/app/migrations/sql/0039-fix-some-on-delete-triggers.sql

@@ -0,0 +1,9 @@
+ALTER TABLE file_library_rel
+ DROP CONSTRAINT file_library_rel_library_file_id_fkey,
+  ADD CONSTRAINT file_library_rel_library_file_id_fkey
+      FOREIGN KEY (library_file_id) REFERENCES file(id) ON DELETE CASCADE;
+
+ALTER TABLE team_profile_rel
+ DROP CONSTRAINT team_profile_rel_profile_id_fkey,
+  ADD CONSTRAINT team_profile_rel_profile_id_fkey
+      FOREIGN KEY (profile_id) REFERENCES profile(id) ON DELETE CASCADE;