feat(cloud): 实现微信云函数 - 订阅管理与每日运势推送

- subscribe: 用户订阅/取消订阅/查询订阅状态 - daily-push: 定时查询订阅用户、生成运势、发送订阅消息 - push-test: 推送调试云函数 - 定时触发器配置，每日 7:00/12:00/18:00 推送
2026-08-13 08:06:10 +08:00
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+// 云函数算法辅助模块
+// 包含运势生成所需的纯函数，适配 Node.js 环境
+
+// 星曜吉凶定义
+const StarNature = {
+  JI: 'JI',
+  XIONG: 'XIONG',
+  ZHONGHE: 'ZHONGHE',
+}
+
+// 四化类型
+const TransformationType = {
+  LU: 'LU',
+  QUAN: 'QUAN',
+  KE: 'KE',
+  JI: 'JI',
+}
+
+// 宫位类型
+const PalaceType = {
+  MING: 'MING',
+  XIONG: 'XIONG',
+  FUQI: 'FUQI',
+  CAI: 'CAI',
+  JILU: 'JILU',
+  QIAN: 'QIAN',
+  GUANLU: 'GUANLU',
+  TUDI: 'TUDI',
+  FUBEN: 'FUBEN',
+  FU: 'FU',
+  SHEN: 'SHEN',
+  ZINV: 'ZINV',
+}
+
+// 地支序数
+const BRANCH_INDEX = {
+  ZI: 1, CHOU: 2, YIN: 3, MAO: 4,
+  CHEN: 5, SI: 6, WU: 7, WEI: 8,
+  SHEN: 9, YOU: 10, XU: 11, HAI: 12,
+}
+
+// 地支颜色映射
+const BRANCH_COLOR_MAP = {
+  ZI: '黑色', CHOU: '黄色', YIN: '绿色', MAO: '绿色',
+  CHEN: '黄色', SI: '红色', WU: '红色', WEI: '黄色',
+  SHEN: '白色', YOU: '白色', XU: '黄色', HAI: '黑色',
+}
+
+// 幸运颜色列表
+const LUCKY_COLORS = ['红色', '黄色', '蓝色', '绿色', '紫色', '金色', '白色', '黑色']
+
+/**
+ * 根据生辰信息和当前日期生成推送内容
+ * @param {Object} birthInfo - 用户生辰信息
+ * @param {Date} date - 当前日期
+ * @returns {Object} 运势内容
+ */
+function generatePushContent(birthInfo, date) {
+  // 基于生辰信息计算基础运势
+  const baseScore = calculateBaseScore(birthInfo, date)
+  const dailyScore = applyDailyAdjustment(baseScore, date)
+
+  const overallScore = clampScore(dailyScore)
+  const overallLuck = determineLuckLevel(overallScore)
+
+  // 各维度运势
+  const careerScore = clampScore(overallScore + getDimensionOffset(date, 'career'))
+  const wealthScore = clampScore(overallScore + getDimensionOffset(date, 'wealth'))
+  const relationshipScore = clampScore(overallScore + getDimensionOffset(date, 'relationship'))
+  const healthScore = clampScore(overallScore + getDimensionOffset(date, 'health'))
+
+  const luckyColor = calculateLuckyColor(birthInfo, date)
+  const luckyNumber = calculateLuckyNumber(birthInfo, date)
+
+  return {
+    overallScore,
+    overallLuck,
+    careerAdvice: generateDimensionAdvice('事业', careerScore),
+    wealthAdvice: generateDimensionAdvice('财运', wealthScore),
+    relationshipAdvice: generateDimensionAdvice('感情', relationshipScore),
+    healthAdvice: generateDimensionAdvice('健康', healthScore),
+    luckyColor,
+    luckyNumber,
+  }
+}
+
+/**
+ * 计算基础运势分数
+ */
+function calculateBaseScore(birthInfo, date) {
+  // 根据出生月份和日期计算基础分
+  const birthMonth = birthInfo.birthHour != null
+    ? (birthInfo.birthHour % 12) + 1
+    : (date.getMonth() + 1)
+  const birthDay = parseInt(birthInfo.birthDate.split('-')[2] || '15')
+
+  // 基础分 50-70
+  const baseScore = 50 + (birthMonth * 3 + birthDay) % 21
+  return baseScore
+}
+
+/**
+ * 应用每日调整
+ */
+function applyDailyAdjustment(baseScore, date) {
+  const dayOfMonth = date.getDate()
+  const month = date.getMonth() + 1
+
+  // 月相调整
+  let adjustment = 0
+  if (dayOfMonth <= 7) adjustment += 2
+  else if (dayOfMonth <= 14) adjustment += 1
+  else if (dayOfMonth <= 21) adjustment -= 1
+  else adjustment -= 2
+
+  // 季节调整
+  if (month >= 3 && month <= 5) adjustment += 1  // 春季
+  else if (month >= 9 && month <= 11) adjustment -= 1  // 秋季
+
+  return baseScore + adjustment
+}
+
+/**
+ * 各维度偏移
+ */
+function getDimensionOffset(date, dimension) {
+  const dayOfMonth = date.getDate()
+  const month = date.getMonth() + 1
+
+  switch (dimension) {
+    case 'career':
+      return (dayOfMonth % 5 === 0) ? 5 : (dayOfMonth % 3 === 0) ? 2 : 0
+    case 'wealth':
+      return (dayOfMonth % 7 === 0) ? 5 : (dayOfMonth % 2 === 0) ? 2 : 0
+    case 'relationship':
+      return (dayOfMonth % 4 === 0) ? 3 : (month % 2 === 0) ? 1 : 0
+    case 'health':
+      return (dayOfMonth % 6 === 0) ? 3 : (month % 3 === 0) ? 1 : 0
+    default:
+      return 0
+  }
+}
+
+/**
+ * 生成各维度建议
+ */
+function generateDimensionAdvice(name, score) {
+  if (score >= 80) {
+    return `${name}运势吉显，宜把握良机`
+  } else if (score >= 65) {
+    return `${name}运势平顺，稳中求进`
+  } else if (score >= 50) {
+    return `${name}运势一般，谨慎行事`
+  } else {
+    return `${name}运势欠佳，宜静待时机`
+  }
+}
+
+/**
+ * 计算幸运色
+ */
+function calculateLuckyColor(birthInfo, date) {
+  const birthMonth = parseInt(birthInfo.birthDate.split('-')[1] || '1')
+  const baseIndex = (birthMonth - 1) % LUCKY_COLORS.length
+  const dayOffset = date.getDate() % 3
+  const colorIndex = (baseIndex + dayOffset) % LUCKY_COLORS.length
+  return LUCKY_COLORS[colorIndex]
+}
+
+/**
+ * 计算幸运数字
+ */
+function calculateLuckyNumber(birthInfo, date) {
+  const dayOfMonth = date.getDate()
+  const month = date.getMonth() + 1
+  const birthDay = parseInt(birthInfo.birthDate.split('-')[2] || '15')
+  let num = (dayOfMonth + month + birthDay) % 9
+  if (num === 0) num = 9
+  return String(num)
+}
+
+/**
+ * 确定运势等级
+ */
+function determineLuckLevel(score) {
+  if (score >= 90) return '大吉'
+  if (score >= 80) return '吉'
+  if (score >= 70) return '中吉'
+  if (score >= 60) return '平'
+  if (score >= 50) return '中平'
+  if (score >= 40) return '小凶'
+  return '凶'
+}
+
+/**
+ * 限制分数范围
+ */
+function clampScore(score) {
+  return Math.max(0, Math.min(100, Math.floor(score)))
+}
+
+module.exports = {
+  generatePushContent,
+  determineLuckLevel,
+  calculateLuckyColor,
+  calculateLuckyNumber,
+  PalaceType,
+  StarNature,
+  TransformationType,
+}