export type CategoryGroup = 'development' | 'implementation' | 'other';

export interface TaskCategory {
  id: string;
  name: string;
  group: CategoryGroup;
  color?: string;
  sortOrder: number;
  isSystem: boolean;
}

export const CATEGORY_GROUP_LABEL: Record<CategoryGroup, string> = {
  development: '开发',
  implementation: '实施',
  other: '其他',
};

export const PRESET_CATEGORIES: TaskCategory[] = [
  { id: 'cat-1', name: '前端开发', group: 'development', color: '#3b82f6', sortOrder: 1, isSystem: true },
  { id: 'cat-2', name: '后端开发', group: 'development', color: '#6366f1', sortOrder: 2, isSystem: true },
  { id: 'cat-3', name: '数据库设计', group: 'development', color: '#8b5cf6', sortOrder: 3, isSystem: true },
  { id: 'cat-4', name: '接口联调', group: 'development', color: '#0ea5e9', sortOrder: 4, isSystem: true },
  { id: 'cat-5', name: '数据处理', group: 'implementation', color: '#f59e0b', sortOrder: 5, isSystem: true },
  { id: 'cat-6', name: '实施支持', group: 'implementation', color: '#10b981', sortOrder: 6, isSystem: true },
];

export function getCategoryById(categories: TaskCategory[], id: string): TaskCategory | undefined {
  return categories.find((c) => c.id === id);
}

export function getCategoriesByGroup(categories: TaskCategory[], group: CategoryGroup): TaskCategory[] {
  return categories.filter((c) => c.group === group).sort((a, b) => a.sortOrder - b.sortOrder);
}