♻️ Refactor services (for add the project-file concept.

And fix many tests.

backend/resources/migrations/0003.projects.sql

@@ -8,43 +8,150 @@ CREATE TABLE IF NOT EXISTS projects (
   modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
   deleted_at timestamptz DEFAULT NULL,
 
-  name text NOT NULL
+  name text NOT NULL,
+  metadata bytea NULL DEFAULT NULL
 );
 
-CREATE TABLE IF NOT EXISTS projects_users (
+CREATE TABLE IF NOT EXISTS project_users (
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   project_id uuid NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
   modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
 
-  role text NOT NULL,
+  can_edit boolean DEFAULT false,
 
   PRIMARY KEY (user_id, project_id)
 );
 
+CREATE TABLE IF NOT EXISTS project_files (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+  user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  project_id uuid NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+
+  name text NOT NULL,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  deleted_at timestamptz DEFAULT NULL,
+
+  metadata bytea NULL DEFAULT NULL
+);
+
+CREATE TABLE IF NOT EXISTS project_file_users (
+  file_id uuid NOT NULL REFERENCES project_files(id) ON DELETE CASCADE,
+  user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+
+  can_edit boolean DEFAULT false,
+
+  PRIMARY KEY (user_id, file_id)
+);
+
+CREATE TABLE IF NOT EXISTS project_pages (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+
+  user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  file_id uuid NOT NULL REFERENCES project_files(id) ON DELETE CASCADE,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  deleted_at timestamptz DEFAULT NULL,
+
+  version bigint NOT NULL,
+  ordering smallint NOT NULL,
+
+  name text NOT NULL,
+  data bytea NOT NULL,
+  metadata bytea NULL DEFAULT NULL
+);
+
+CREATE TABLE IF NOT EXISTS project_page_history (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+
+  user_id uuid NULL REFERENCES users(id) ON DELETE SET NULL,
+  page_id uuid NOT NULL REFERENCES project_pages(id) ON DELETE CASCADE,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  version bigint NOT NULL DEFAULT 0,
+
+  pinned bool NOT NULL DEFAULT false,
+  label text NOT NULL DEFAULT '',
+
+  data bytea NOT NULL
+);
+
 -- Indexes
 
-CREATE INDEX projects_user_idx ON projects(user_id);
-CREATE INDEX projects_users_user_id_idx ON projects_users(project_id);
-CREATE INDEX projects_users_project_id_idx ON projects_users(user_id);
+CREATE INDEX projects__user_id__idx ON projects(user_id);
+
+CREATE INDEX project_files__user_id__idx ON project_files(user_id);
+CREATE INDEX project_files__project_id__idx ON project_files(project_id);
+
+CREATE INDEX project_pages__user_id__idx ON project_pages(user_id);
+CREATE INDEX project_pages__file_id__idx ON project_pages(file_id);
+
+CREATE INDEX project_page_history__page_id__idx ON project_page_history(page_id);
+CREATE INDEX project_page_history__user_id__idx ON project_page_history(user_id);
 
 -- Triggers
 
 CREATE OR REPLACE FUNCTION handle_project_insert()
   RETURNS TRIGGER AS $$
   BEGIN
-    INSERT INTO projects_users (user_id, project_id, role)
-    VALUES (NEW.user_id, NEW.id, 'owner');
+    INSERT INTO project_users (user_id, project_id, can_edit)
+    VALUES (NEW.user_id, NEW.id, true);
 
     RETURN NEW;
   END;
 $$ LANGUAGE plpgsql;
 
+CREATE OR REPLACE FUNCTION handle_page_update()
+  RETURNS TRIGGER AS $pagechange$
+  DECLARE
+    current_dt timestamptz := clock_timestamp();
+    proj_id uuid;
+  BEGIN
+    UPDATE project_files
+       SET modified_at = current_dt
+     WHERE id = OLD.file_id
+    RETURNING project_id
+      INTO STRICT proj_id;
+
+    --- Update projects modified_at attribute when a
+    --- page of that project is modified.
+    UPDATE projects
+       SET modified_at = current_dt
+     WHERE id = proj_id;
+
+    RETURN NEW;
+  END;
+$pagechange$ LANGUAGE plpgsql;
+
 CREATE TRIGGER projects_on_insert_tgr
  AFTER INSERT ON projects
    FOR EACH ROW EXECUTE PROCEDURE handle_project_insert();
 
-CREATE TRIGGER projects_modified_at_tgr
+CREATE TRIGGER pages__on_update__tgr
+BEFORE UPDATE ON project_pages
+   FOR EACH ROW EXECUTE PROCEDURE handle_page_update();
+
+
+CREATE TRIGGER projects__modified_at__tgr
 BEFORE UPDATE ON projects
    FOR EACH ROW EXECUTE PROCEDURE update_modified_at();
+
+CREATE TRIGGER project_files__modified_at__tgr
+BEFORE UPDATE ON project_files
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();
+
+CREATE TRIGGER project_pages__modified_at__tgr
+BEFORE UPDATE ON project_pages
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();
+
+CREATE TRIGGER project_page_history__modified_at__tgr
+BEFORE UPDATE ON project_page_history
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();