import type { QuickPhrase } from '@/types';

/**
 * 生成唯一的快捷短语 ID
 */
export function generatePhraseId(): string {
  return `phrase-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`;
}

/**
 * 默认的快捷短语列表
 */
export const DEFAULT_PHRASES: QuickPhrase[] = [
  {
    id: 'default-1',
    title: '写作助手',
    content: '请帮我写一篇关于',
    icon: 'PenTool',
    sortOrder: 1,
    createdAt: Date.now(),
    updatedAt: Date.now(),
  },
  {
    id: 'default-2',
    title: '代码解释',
    content: '请解释这段代码的功能和工作原理：\n\n',
    icon: 'Code',
    sortOrder: 2,
    createdAt: Date.now(),
    updatedAt: Date.now(),
  },
  {
    id: 'default-3',
    title: '优化建议',
    content: '请帮我优化以下内容，使其更加专业和准确：\n\n',
    icon: 'Sparkles',
    sortOrder: 3,
    createdAt: Date.now(),
    updatedAt: Date.now(),
  },
  {
    id: 'default-4',
    title: '翻译助手',
    content: '请帮我翻译以下内容：\n\n',
    icon: 'Languages',
    sortOrder: 4,
    createdAt: Date.now(),
    updatedAt: Date.now(),
  },
  {
    id: 'default-5',
    title: '头脑风暴',
    content: '请帮我进行头脑风暴，给我一些关于以下主题的创意想法：\n\n',
    icon: 'Lightbulb',
    sortOrder: 5,
    createdAt: Date.now(),
    updatedAt: Date.now(),
  },
];

/**
 * localStorage 的 key
 */
export const STORAGE_KEY = 'cch_quick_phrases';

/**
 * 从 localStorage 加载快捷短语
 */
export function loadPhrasesFromStorage(): QuickPhrase[] {
  try {
    const stored = localStorage.getItem(STORAGE_KEY);
    if (stored) {
      const phrases = JSON.parse(stored) as QuickPhrase[];
      // 验证数据格式
      if (Array.isArray(phrases) && phrases.length > 0) {
        return phrases;
      }
    }
  } catch (error) {
    console.error('Failed to load quick phrases from storage:', error);
  }
  // 如果没有存储的数据或加载失败，返回默认短语
  return DEFAULT_PHRASES;
}

/**
 * 保存快捷短语到 localStorage
 */
export function savePhrasesToStorage(phrases: QuickPhrase[]): void {
  try {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(phrases));
  } catch (error) {
    console.error('Failed to save quick phrases to storage:', error);
  }
}

/**
 * 验证快捷短语数据
 */
export function validatePhrase(phrase: Partial<QuickPhrase>): phrase is QuickPhrase {
  return (
    typeof phrase.id === 'string' &&
    typeof phrase.title === 'string' &&
    phrase.title.trim().length > 0 &&
    typeof phrase.content === 'string' &&
    phrase.content.trim().length > 0 &&
    typeof phrase.sortOrder === 'number' &&
    typeof phrase.createdAt === 'number' &&
    typeof phrase.updatedAt === 'number'
  );
}

/**
 * 按排序顺序对短语进行排序
 */
export function sortPhrases(phrases: QuickPhrase[]): QuickPhrase[] {
  return [...phrases].sort((a, b) => a.sortOrder - b.sortOrder);
}