fix: chinese-almanac 使用 lunar-javascript 库 - 修复农历日期计算错误

skills/chinese-almanac/almanac.js

@@ -1,27 +1,44 @@
 /**
  * Chinese Almanac (黄历) Query Skill
- * 使用 Tavily API 查询每日黄历信息
+ * 使用 Tavily API 查询黄历 + lunar-javascript 计算农历
  */
 
+const { Solar, Lunar } = require('lunar-javascript');
 const TAVILY_API_KEY = process.env.TAVILY_API_KEY || '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';
 
+/**
+ * 计算农历日期（使用专业库）
+ * lunar-javascript 会自动处理时区，直接传入日期即可
+ */
+function getLunarDate(jsDate) {
+  // 使用 local time 创建 Solar 对象，lunar-javascript 会正确处理
+  const solar = Solar.fromYmd(jsDate.getFullYear(), jsDate.getMonth() + 1, jsDate.getDate());
+  const lunar = solar.getLunar();
+  
+  return {
+    lunarDate: lunar.toString(), // 如：二〇二六年正月初十
+    lunarDay: lunar.getDayInChinese(), // 如：初十
+    lunarMonth: lunar.getMonthInChinese(), // 如：正月
+    lunarYear: lunar.getYearInChinese() // 如：二〇二六
+  };
+}
+
 /**
  * 查询黄历信息
  */
 async function queryAlmanac(date) {
+  let targetDate;
   if (!date) {
-    const tomorrow = new Date();
-    tomorrow.setDate(tomorrow.getDate() + 1);
-    date = tomorrow.toISOString().split('T')[0];
+    targetDate = new Date();
+    targetDate.setDate(targetDate.getDate() + 1); // 明天
+  } else {
+    targetDate = new Date(date);
   }
   
-  // 动态计算农历日期（基于 2026 年春节 2 月 17 日）
-  const targetDate = date ? new Date(date) : new Date();
-  const springFestival = new Date('2026-02-17');
-  const lunarDay = Math.floor((targetDate - springFestival) / (1000 * 60 * 60 * 24)) + 1;
-  const lunarDateStr = `农历正月初${lunarDay}`;
+  // 使用专业库计算农历
+  const lunarInfo = getLunarDate(targetDate);
   
-  const query = `${date} 黄历 宜忌 ${lunarDateStr}`;
+  const query = `${targetDate.toISOString().split('T')[0]} 黄历 宜忌 ${lunarInfo.lunarDate}`;
   
   try {
     const response = await fetch('https://api.tavily.com/search', {
@@ -43,12 +60,12 @@ async function queryAlmanac(date) {
     }
 
     const data = await response.json();
-    const almanacInfo = parseAlmanacData(data, date, lunarDateStr);
+    const almanacInfo = parseAlmanacData(data, targetDate, lunarInfo);
     
     return {
       success: true,
-      date: date,
-      lunarDate: lunarDateStr,
+      date: targetDate.toISOString().split('T')[0],
+      lunarDate: lunarInfo.lunarDate,
       weekday: almanacInfo.weekday,
       ganzhi: almanacInfo.ganzhi,
       yi: almanacInfo.yi,
@@ -59,7 +76,7 @@ async function queryAlmanac(date) {
     return {
       success: false,
       error: error.message,
-      fallback: getFallbackAlmanac(date, lunarDateStr)
+      fallback: getFallbackAlmanac(targetDate, lunarInfo)
     };
   }
 }
@@ -67,11 +84,11 @@ async function queryAlmanac(date) {
 /**
  * 解析黄历数据
  */
-function parseAlmanacData(data, date, lunarDateStr) {
+function parseAlmanacData(data, date, lunarInfo) {
   const result = {
-    lunarDate: lunarDateStr,
+    lunarDate: lunarInfo.lunarDate,
     weekday: getWeekday(date),
-    ganzhi: '丙午年 庚寅月 己巳日',
+    ganzhi: '丙午年 庚寅月 ' + getDayGanZhi(date),
     yi: ['作灶', '解除', '平治道涂', '余事勿取'],
     ji: ['祈福', '安葬', '祭祀', '安门'],
     chong: '冲猪 煞东'
@@ -110,22 +127,40 @@ function parseAlmanacData(data, date, lunarDateStr) {
 /**
  * 获取星期
  */
-function getWeekday(dateStr) {
-  const date = new Date(dateStr);
+function getWeekday(date) {
   const weekdays = ['日', '一', '二', '三', '四', '五', '六'];
   return `星期${weekdays[date.getDay()]}`;
 }
 
+/**
+ * 获取日干支（简化版）
+ */
+function getDayGanZhi(date) {
+  // 2026-02-17 是己巳日
+  const baseDate = new Date('2026-02-17');
+  const ganzhi = ['甲子','乙丑','丙寅','丁卯','戊辰','己巳','庚午','辛未','壬申','癸酉',
+                  '甲戌','乙亥','丙子','丁丑','戊寅','己卯','庚辰','辛巳','壬午','癸未',
+                  '甲申','乙酉','丙戌','丁亥','戊子','己丑','庚寅','辛卯','壬辰','癸巳',
+                  '甲午','乙未','丙申','丁酉','戊戌','己亥','庚子','辛丑','壬寅','癸卯',
+                  '甲辰','乙巳','丙午','丁未','戊申','己酉','庚戌','辛亥','壬子','癸丑',
+                  '甲寅','乙卯','丙辰','丁巳','戊午','己未','庚申','辛酉','壬戌','癸亥'];
+  
+  const daysSince = Math.floor((date - baseDate) / (1000*60*60*24));
+  const baseIndex = 5; // 己巳是第 5 个（从 0 开始）
+  const index = (baseIndex + daysSince) % 60;
+  return ganzhi[index >= 0 ? index : 60 + index] + '日';
+}
+
 /**
  * Fallback 数据
  */
-function getFallbackAlmanac(date, lunarDateStr) {
+function getFallbackAlmanac(date, lunarInfo) {
   return {
     success: true,
-    date: date,
-    lunarDate: lunarDateStr,
+    date: date.toISOString().split('T')[0],
+    lunarDate: lunarInfo.lunarDate,
     weekday: getWeekday(date),
-    ganzhi: '丙午年 庚寅月 己巳日',
+    ganzhi: '丙午年 庚寅月 ' + getDayGanZhi(date),
     yi: ['作灶', '解除', '平治道涂', '余事勿取'],
     ji: ['祈福', '安葬', '祭祀', '安门'],
     chong: '冲猪 煞东',
@@ -160,9 +195,15 @@ function formatAlmanac(almanac) {
 
 // 测试
 if (require.main === module) {
-  queryAlmanac('2026-02-24').then(result => {
+  console.log('=== 黄历查询测试（使用 lunar-javascript 库）===\n');
+  
+  const arg = process.argv[2] || 'tomorrow';
+  queryAlmanac(arg === 'today' ? null : (arg === 'tomorrow' ? undefined : arg))
+    .then(result => {
       console.log(formatAlmanac(result));
+      console.log('\n详细信息:');
+      console.log(`农历：${result.lunarDate}`);
     });
 }
 
-module.exports = { queryAlmanac, formatAlmanac };
+module.exports = { queryAlmanac, formatAlmanac, getLunarDate };