Method MarkUninstalled

internal/metadata/store.go:317–355

MarkUninstalled removes the specified app from the installed targets list. If no targets remain, the installed flag is cleared. Uses a transaction to prevent race conditions when multiple concurrent uninstalls target the same item.

(ctx context.Context, kind, installKey, app string)

// If no targets remain, the installed flag is cleared. Uses a transaction to
// prevent race conditions when multiple concurrent uninstalls target the same item.
func (s *Store) MarkUninstalled(ctx context.Context, kind, installKey, app string) error {
	if err := s.Init(ctx); err != nil {
		return err
	}
	db, err := s.open()
	if err != nil {
		return err
	}
	defer db.Close()
	tx, err := db.BeginTx(ctx, nil)
	if err != nil {
		return fmt.Errorf("metadata: mark uninstalled: begin tx: %w", err)
	}
	defer tx.Rollback()
	// Fetch current targets within the transaction.
	var currentTargets string
	err = tx.QueryRowContext(ctx, `
		SELECT installed_targets FROM metadata_items
		WHERE kind = ? AND install_key = ?`, kind, installKey).Scan(&currentTargets)
	if err != nil {
		return fmt.Errorf("metadata: mark uninstalled: %w", err)
	}
	// Remove the app from the comma-separated list.
	newTargets := removeAppFromTargets(currentTargets, app)
	now := timeNow()
	if newTargets == "" {
		_, err = tx.ExecContext(ctx, `
			UPDATE metadata_items SET installed = 0, installed_targets = '', updated_at = ?
			WHERE kind = ? AND install_key = ?`, now, kind, installKey)
	} else {
		_, err = tx.ExecContext(ctx, `
			UPDATE metadata_items SET installed_targets = ?, updated_at = ?
			WHERE kind = ? AND install_key = ?`, newTargets, now, kind, installKey)
	}
	if err != nil {
		return fmt.Errorf("metadata: mark uninstalled: %w", err)
	}
	return tx.Commit()
}

// removeAppFromTargets removes a specific app from a comma-separated target list.
func removeAppFromTargets(targets, app string) string {