feat: 优化 AI 解析接口返回友好消息

- 提取 System Prompt 为常量避免模板解析问题
- 优化 Mock 解析器支持农历和节假日识别
- 返回友好的 response 文本而非 JSON 结构
- 支持每年重复类型

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/routes/ai.ts

@@ -6,17 +6,68 @@ import { asyncHandler } from '../middleware/errorHandler';
 
 const router = Router();
 
+// System prompt for AI - extracted as constant to avoid template parsing issues
+const SYSTEM_PROMPT = `你是一个帮助用户创建事件（纪念日或提醒）的智能助手。
+
+当前时间：${new Date().toISOString()}
+
+任务：从自然语言中解析用户输入，并严格按照以下JSON格式返回：
+
+{
+  "parsed": {
+    "type": "anniversary 或 reminder",
+    "title": "事件标题",
+    "date": "2026-02-13T15:00:00Z",
+    "timezone": "Asia/Shanghai",
+    "is_lunar": true 或 false,
+    "repeat_type": "daily, weekly, monthly, yearly 或 none"
+  },
+  "response": "友好的确认消息"
+}
+
+重要规则：
+1. date 必须是用户提到的具体日期时间，格式为 ISO 8601: YYYY-MM-DDTHH:mm:ssZ
+2. 如果用户说"明天"，date = (当前时间 + 1天) 的对应时间点
+3. 如果用户说"后天"，date = (当前时间 + 2天) 的对应时间点
+4. 如果用户说"下周三"，date = 下周三的 09:00:00Z
+5. 如果用户说"下午3点"，date = 今天下午15:00:00Z 或用户指定的日期的15:00:00Z
+6. 如果用户没有指定具体时间，默认使用当天的 09:00:00Z
+7. NEVER 使用示例日期如 2024-01-02T15:00:00Z，必须使用用户提到的实际日期或合理的未来日期
+8. 如果用户说"每月X号"，date = 用户提到的日期（如 2025-02-15T09:00:00Z）
+9. 如果用户说"每年X月X日"，date = 未来的对应日期（如 2026-01-01T09:00:00Z）
+
+农历日期识别：农历正月初一 -> 需要转换为公历日期
+
+节假日识别（设置为 is_holiday=true）：
+春节、清明、劳动节、国庆、元旦、中秋、端午
+
+时区处理：
+- 如果用户在中国，使用 "Asia/Shanghai" 时区
+- date 应该是用户提到的时间转换为 UTC 时间
+- 例如用户说"明天下午3点"，date = 明天 15:00 +0800 转换为 UTC = 明天 07:00Z
+
+请务必：
+- 解析用户真实意图，不要编造日期
+- 如果用户说"下周三"，必须是真正下周星期三，不是今天也不是上周
+- 如果用户没有明确日期，使用合理的默认日期（通常是明天或用户提到的第一个日期）`;
+
 const parseMessageSchema = z.object({
   message: z.string().min(1, 'Message is required').max(1000),
 });
 
-// AI parsed event validation schema
+// AI parsed event validation schema - 扩展支持所有字段
 const parsedEventSchema = z.object({
   type: z.enum(['anniversary', 'reminder']),
   title: z.string().min(1).max(200),
   date: z.string().datetime(),
+  timezone: z.string(), // 时区信息
   is_lunar: z.boolean(),
-  repeat_type: z.enum(['yearly', 'monthly', 'none']),
+  repeat_type: z.enum(['daily', 'weekly', 'monthly', 'yearly', 'none']),
+  // 新增字段
+  content: z.string().optional(), // 详细内容(仅提醒)
+  is_holiday: z.boolean().optional(), // 节假日(仅纪念日)
+  priority: z.enum(['none', 'red', 'green', 'yellow']).optional(), // 颜色(仅提醒)
+  reminder_times: z.array(z.string()).optional(), // 提前提醒时间点
 });
 
 // All routes require authentication
@@ -61,6 +112,12 @@ async function callDeepSeek(message: string): Promise<{
   }
 
   try {
+    // Get current date for context
+    const now = new Date();
+    const tomorrow = new Date(now);
+    tomorrow.setDate(tomorrow.getDate() + 1);
+    const tomorrowStr = tomorrow.toISOString().slice(0, 11) + '15:00:00Z';
+
     const response = await fetch(apiUrl, {
       method: 'POST',
       headers: {
@@ -72,18 +129,7 @@ async function callDeepSeek(message: string): Promise<{
         messages: [
           {
             role: 'system',
-            content: `You are a helpful assistant that helps users create events (anniversaries or reminders) from natural language.
+            content: SYSTEM_PROMPT
-            Parse the user's message and respond with a JSON object in the following format:
-            {
-              "parsed": {
-                "type": "anniversary" | "reminder",
-                "title": "event title",
-                "date": "ISO date string",
-                "is_lunar": true | false,
-                "repeat_type": "yearly" | "monthly" | "none"
-              },
-              "response": "A friendly confirmation message"
-            }`
           },
           {
             role: 'user',
@@ -109,9 +155,19 @@ async function callDeepSeek(message: string): Promise<{
         const parsed = rawParsed.parsed || rawParsed;
         // Validate parsed data with Zod schema
         const validated = parsedEventSchema.parse(parsed);
+        // 构建友好的用户消息
+        const typeText = validated.type === 'anniversary' ? '纪念日' : '提醒';
+        const dateObj = new Date(validated.date);
+        const dateText = dateObj.toLocaleDateString('zh-CN', {
+          year: 'numeric', month: 'long', day: 'numeric',
+          timeZone: validated.timezone
+        });
+        const repeatText = validated.repeat_type === 'none' ? '' :
+          { daily: '，每天重复', weekly: '，每周重复', monthly: '，每月重复', yearly: '，每年重复' }[validated.repeat_type];
+
         return {
           parsed: validated,
-          response: parsed.response || content,
+          response: `已为你创建${typeText}「${validated.title}」，日期：${dateText}${repeatText}`,
         };
       } catch (e) {
         // Schema validation failed, use mock response
@@ -135,35 +191,116 @@ function mockParseResponse(message: string): { parsed: any; response: string } {
   const isReminder = lowerMessage.includes('提醒') || lowerMessage.includes('提醒我');
 
   // Detect lunar date
-  const isLunar = lowerMessage.includes('农历');
+  const isLunar = lowerMessage.includes('农历') || lowerMessage.includes('阴历');
 
-  // Detect repeat type
+  // Detect holiday
-  let repeatType = 'none';
+  const isHoliday = lowerMessage.includes('春节') || lowerMessage.includes('清明') ||
-  if (lowerMessage.includes('每年') || lowerMessage.includes(' yearly') || lowerMessage.includes('周年')) {
+                   lowerMessage.includes('劳动节') || lowerMessage.includes('国庆') ||
-    repeatType = 'yearly';
+                   lowerMessage.includes('元旦') || lowerMessage.includes('中秋') ||
-  } else if (lowerMessage.includes('每月') || lowerMessage.includes(' monthly')) {
+                   lowerMessage.includes('端午');
-    repeatType = 'monthly';
+
+  // Detect priority (color)
+  let priority: 'none' | 'red' | 'green' | 'yellow' = 'none';
+  if (lowerMessage.includes('重要') || lowerMessage.includes('紧急') || lowerMessage.includes('红色')) {
+    priority = 'red';
+  } else if (lowerMessage.includes('绿色') || lowerMessage.includes('绿')) {
+    priority = 'green';
+  } else if (lowerMessage.includes('黄色') || lowerMessage.includes('黄')) {
+    priority = 'yellow';
   }
 
-  // Extract title (simple heuristic - first phrase before date)
+  // Detect content (after colon or special markers)
-  const title = message.split(/[\s\d\u4e00-\u9fa5]+/)[0] || message.substring(0, 50);
+  let content = '';
+  if (message.includes('：') || message.includes(':')) {
+    const parts = message.split(/[：:]/);
+    if (parts.length > 1) {
+      content = parts[1].trim();
+    }
+  }
 
-  // Mock date (tomorrow)
+  // Detect repeat type
+  let repeatType: 'daily' | 'weekly' | 'monthly' | 'yearly' | 'none' = 'none';
+  if (lowerMessage.includes('每天') || lowerMessage.includes('每日')) {
+    repeatType = 'daily';
+  } else if (lowerMessage.includes('每周') || lowerMessage.includes(' weekly')) {
+    repeatType = 'weekly';
+  } else if (lowerMessage.includes('每月') || lowerMessage.includes(' monthly')) {
+    repeatType = 'monthly';
+  } else if (lowerMessage.includes('每年') || lowerMessage.includes(' yearly') || lowerMessage.includes('周年')) {
+    repeatType = 'yearly';
+  }
+
+  // Extract title (simple heuristic - first phrase before date or colon)
+  let title = message.split(/[：:]/)[0] || message;
+  title = title.split(/[\s\d\u4e00-\u9fa5]+/)[0] || title.substring(0, 50);
+
+  // Mock date (tomorrow at 3 PM local time by default for China UTC+8)
   const tomorrow = new Date();
   tomorrow.setDate(tomorrow.getDate() + 1);
+  tomorrow.setHours(15, 0, 0, 0); // 默认下午3点（中国时区）
 
-  return {
+  // 检测消息中的时间（如"下午3点"、"下午四点"、"14:30"等）
-    parsed: {
+  const timePattern = message.match(/(?:下午|晚上)?(\d{1,2})(?::(\d{2}))?\s*(?:点|时)/);
+  if (timePattern) {
+    let hours = parseInt(timePattern[1]);
+    const minutes = timePattern[2] ? parseInt(timePattern[2]) : 0;
+    // 如果是下午时间（1-11点），加上12
+    if (message.includes('下午') || message.includes('晚上')) {
+      if (hours < 12) hours += 12;
+    }
+    tomorrow.setHours(hours, minutes, 0, 0);
+  }
+
+  // Build parsed result
+  const parsed: any = {
     type: isReminder ? 'reminder' : 'anniversary',
     title: title.trim(),
     date: tomorrow.toISOString(),
+    timezone: 'Asia/Shanghai', // 默认使用中国时区
     is_lunar: isLunar,
     repeat_type: repeatType,
-    },
+  };
-    response: `我帮你记的是：
+
+  // Add optional fields
+  if (isHoliday) {
+    parsed.is_holiday = true;
+  }
+  if (isReminder && priority !== 'none') {
+    parsed.priority = priority;
+  }
+  if (isReminder && content) {
+    parsed.content = content;
+  }
+
+  // Generate response
+  const repeatText = {
+    daily: '每天重复',
+    weekly: '每周重复',
+    monthly: '每月重复',
+    yearly: '每年重复',
+    none: '不重复'
+  }[repeatType];
+
+  let responseMsg = `我帮你记的是：
 **${title.trim()}**
-📅 ${tomorrow.toLocaleDateString('zh-CN')}
+📅 ${tomorrow.toLocaleDateString('zh-CN')}`;
-🔄 ${repeatType === 'yearly' ? '每年重复' : repeatType === 'monthly' ? '每月重复' : '不重复'}`
+  if (repeatType !== 'none') {
+    responseMsg += `\n🔄 ${repeatText}`;
+  }
+  if (isLunar) {
+    responseMsg += `\n📆 农历日期`;
+  }
+  if (isHoliday) {
+    responseMsg += `\n🎉 节假日`;
+  }
+  if (isReminder && priority !== 'none') {
+    const colorText = { red: '红色', green: '绿色', yellow: '黄色', none: '无' };
+    responseMsg += `\n🏷️ ${colorText[priority]}`;
+  }
+
+  return {
+    parsed,
+    response: responseMsg
   };
 }