export interface TodoDTO {
  id: string;
  title: string;
  details: string | null;
  completed: boolean;
  order: number;
  groupId: string;
  // ISO 8601 strings, not Date -- these cross the server action boundary
  // and get optimistically recomputed client-side (see board-context.tsx),
  // so a plain serializable string is simpler than a Date on both ends.
  createdAt: string;
  updatedAt: string;
  completedAt: string | null;
}

export interface GroupDTO {
  id: string;
  title: string;
  color: string;
  order: number;
  noteContent: string;
  categoryId: string;
  todos: TodoDTO[];
}

export interface CategoryDTO {
  id: string;
  name: string;
  order: number;
  groups: GroupDTO[];
}