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/**
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* 宠物体重管理工具类
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* 负责体重数据的存储、分析和AI建议生成
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*/
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class WeightManager {
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constructor() {
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this.storageKey = 'pet_weight_records'
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}
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/**
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* 获取宠物的体重记录
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* @param {string} petId 宠物ID
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* @returns {Array} 体重记录数组
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*/
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getWeightRecords(petId) {
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try {
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const allRecords = uni.getStorageSync(this.storageKey) || {}
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return allRecords[petId] || []
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} catch (error) {
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console.error('获取体重记录失败:', error)
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return []
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}
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}
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/**
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* 添加体重记录
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* @param {string} petId 宠物ID
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* @param {Object} record 体重记录
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*/
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addWeightRecord(petId, record) {
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try {
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const allRecords = uni.getStorageSync(this.storageKey) || {}
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if (!allRecords[petId]) {
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allRecords[petId] = []
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}
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const newRecord = {
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id: Date.now(),
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weight: record.weight,
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date: record.date || new Date().toISOString(),
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note: record.note || '',
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timestamp: Date.now()
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}
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allRecords[petId].push(newRecord)
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allRecords[petId].sort((a, b) => new Date(a.date) - new Date(b.date))
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uni.setStorageSync(this.storageKey, allRecords)
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return newRecord
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} catch (error) {
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console.error('添加体重记录失败:', error)
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return null
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}
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}
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/**
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* 获取当前体重
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* @param {string} petId 宠物ID
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* @returns {number} 当前体重
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*/
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getCurrentWeight(petId) {
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const records = this.getWeightRecords(petId)
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if (records.length === 0) return 0
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return records[records.length - 1].weight
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}
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/**
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* 计算体重变化
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* @param {string} petId 宠物ID
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* @param {number} days 对比天数
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* @returns {Object} 变化数据
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*/
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calculateWeightChange(petId, days) {
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const records = this.getWeightRecords(petId)
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if (records.length < 2) {
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return {
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change: 0,
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percent: 0,
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trend: 'stable'
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}
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}
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const now = new Date()
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const compareDate = new Date(now.getTime() - days * 24 * 60 * 60 * 1000)
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const currentWeight = this.getCurrentWeight(petId)
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const compareRecord = records.find(record =>
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new Date(record.date) >= compareDate
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) || records[0]
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const change = currentWeight - compareRecord.weight
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const percent = compareRecord.weight > 0 ? (change / compareRecord.weight) * 100 : 0
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let trend = 'stable'
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if (Math.abs(percent) > 1) {
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trend = change > 0 ? 'increase' : 'decrease'
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}
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return {
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change: Number(change.toFixed(1)),
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percent: Number(percent.toFixed(1)),
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trend: trend,
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previousWeight: compareRecord.weight
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}
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}
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/**
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* 生成图表数据
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* @param {string} petId 宠物ID
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* @param {string} timeRange 时间范围
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* @returns {Object} 图表数据
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*/
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generateChartData(petId, timeRange) {
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const records = this.getWeightRecords(petId)
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if (records.length === 0) {
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return {
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categories: [],
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series: [{ name: "体重", data: [] }]
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}
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}
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let filteredRecords = []
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const now = new Date()
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switch (timeRange) {
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case 'week':
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const weekAgo = new Date(now.getTime() - 7 * 24 * 60 * 60 * 1000)
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filteredRecords = records.filter(record => new Date(record.date) >= weekAgo)
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break
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case 'month':
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const monthAgo = new Date(now.getTime() - 30 * 24 * 60 * 60 * 1000)
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filteredRecords = records.filter(record => new Date(record.date) >= monthAgo)
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break
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case 'year':
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const yearAgo = new Date(now.getTime() - 365 * 24 * 60 * 60 * 1000)
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filteredRecords = records.filter(record => new Date(record.date) >= yearAgo)
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break
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default:
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filteredRecords = records
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}
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// 如果数据点太少，补充一些模拟数据
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if (filteredRecords.length === 0) {
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filteredRecords = this.generateMockData(timeRange)
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}
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const categories = filteredRecords.map(record => {
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const date = new Date(record.date)
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if (timeRange === 'year' || timeRange === 'all') {
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return `${date.getMonth() + 1}月`
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} else {
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return `${date.getMonth() + 1}/${date.getDate()}`
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}
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})
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const data = filteredRecords.map(record => record.weight)
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return {
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categories: categories,
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series: [{ name: "体重", data: data }]
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}
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}
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/**
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* 生成模拟数据（用于演示）
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* @param {string} timeRange 时间范围
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* @returns {Array} 模拟数据
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*/
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generateMockData(timeRange) {
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const now = new Date()
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const mockData = []
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switch (timeRange) {
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case 'week':
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for (let i = 6; i >= 0; i--) {
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const date = new Date(now.getTime() - i * 24 * 60 * 60 * 1000)
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mockData.push({
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weight: 4.0 + Math.random() * 0.4,
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date: date.toISOString()
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})
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}
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break
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case 'month':
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for (let i = 4; i >= 0; i--) {
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const date = new Date(now.getTime() - i * 7 * 24 * 60 * 60 * 1000)
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mockData.push({
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weight: 3.9 + i * 0.075,
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date: date.toISOString()
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})
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}
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break
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case 'year':
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for (let i = 5; i >= 0; i--) {
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const date = new Date(now.getTime() - i * 60 * 24 * 60 * 60 * 1000)
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mockData.push({
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weight: 3.2 + (5 - i) * 0.2,
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date: date.toISOString()
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})
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}
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break
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default:
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for (let i = 6; i >= 0; i--) {
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const date = new Date(now.getTime() - i * 90 * 24 * 60 * 60 * 1000)
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mockData.push({
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weight: 1.2 + (6 - i) * 0.5,
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date: date.toISOString()
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})
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}
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}
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return mockData
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}
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/**
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* 生成AI健康分析
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* @param {string} petId 宠物ID
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* @param {Object} petInfo 宠物信息
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* @returns {Object} AI分析结果
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*/
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generateAIAnalysis(petId, petInfo) {
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const currentWeight = this.getCurrentWeight(petId)
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const weeklyChange = this.calculateWeightChange(petId, 7)
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const monthlyChange = this.calculateWeightChange(petId, 30)
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// 根据品种、年龄、性别判断健康范围
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const healthRange = this.getHealthyWeightRange(petInfo)
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const isHealthy = currentWeight >= healthRange.min && currentWeight <= healthRange.max
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// 健康评估
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let healthAssessment = ''
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if (isHealthy) {
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healthAssessment = `根据${petInfo.name}的品种（${petInfo.breed}）、年龄（${petInfo.age}岁）和性别（${petInfo.gender}），当前体重${currentWeight}kg处于健康范围内（${healthRange.min}-${healthRange.max}kg）。`
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} else if (currentWeight < healthRange.min) {
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healthAssessment = `当前体重${currentWeight}kg低于健康范围（${healthRange.min}-${healthRange.max}kg），建议增加营养摄入。`
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} else {
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healthAssessment = `当前体重${currentWeight}kg超出健康范围（${healthRange.min}-${healthRange.max}kg），建议控制饮食并增加运动。`
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}
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// 趋势分析
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let trendAnalysis = ''
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if (weeklyChange.trend === 'stable') {
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trendAnalysis = '近期体重保持稳定，这是一个良好的状态。'
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} else if (weeklyChange.trend === 'increase') {
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if (weeklyChange.percent > 5) {
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trendAnalysis = `近期体重上升较快（${weeklyChange.percent}%），需要关注饮食控制。`
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} else {
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trendAnalysis = `近期体重呈适度上升趋势（${weeklyChange.percent}%），增长速度适中。`
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}
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} else {
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if (weeklyChange.percent < -5) {
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trendAnalysis = `近期体重下降较快（${weeklyChange.percent}%），建议检查健康状况。`
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} else {
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trendAnalysis = `近期体重呈下降趋势（${weeklyChange.percent}%），请注意营养补充。`
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}
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}
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// 建议
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let recommendations = this.generateRecommendations(currentWeight, healthRange, weeklyChange)
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// 医疗建议
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let medicalAdvice = ''
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if (Math.abs(weeklyChange.percent) > 10 || !isHealthy) {
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medicalAdvice = '建议咨询兽医，进行专业的健康检查和营养指导。'
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}
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return {
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healthAssessment,
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trendAnalysis,
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recommendations,
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medicalAdvice
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}
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}
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/**
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* 获取健康体重范围
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* @param {Object} petInfo 宠物信息
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* @returns {Object} 健康体重范围
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*/
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getHealthyWeightRange(petInfo) {
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// 简化的品种体重范围映射
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const breedRanges = {
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'橘猫': { min: 3.5, max: 5.5 },
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'英短': { min: 3.0, max: 5.0 },
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'美短': { min: 3.5, max: 5.5 },
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'布偶': { min: 4.0, max: 7.0 },
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'波斯': { min: 3.0, max: 5.5 },
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'暹罗': { min: 2.5, max: 4.5 }
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}
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const baseRange = breedRanges[petInfo.breed] || { min: 3.0, max: 6.0 }
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// 根据性别调整（公猫通常比母猫重一些）
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if (petInfo.gender === '公') {
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baseRange.min += 0.5
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baseRange.max += 0.5
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}
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return baseRange
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}
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/**
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* 生成个性化建议
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* @param {number} currentWeight 当前体重
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* @param {Object} healthRange 健康范围
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* @param {Object} weeklyChange 周变化
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* @returns {string} 建议内容
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*/
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generateRecommendations(currentWeight, healthRange, weeklyChange) {
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let recommendations = []
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if (currentWeight < healthRange.min) {
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recommendations.push('增加高质量蛋白质摄入，如优质猫粮、煮熟的鸡胸肉')
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recommendations.push('少量多餐，每日3-4次定时喂食')
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recommendations.push('确保充足的饮水')
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} else if (currentWeight > healthRange.max) {
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recommendations.push('控制食物分量，减少高热量零食')
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recommendations.push('增加运动量，每日逗猫棒游戏20-30分钟')
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recommendations.push('选择低脂肪、高纤维的减肥猫粮')
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} else {
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recommendations.push('保持当前的饮食习惯，每日定时定量喂食')
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recommendations.push('适量运动，如逗猫棒游戏15-20分钟')
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recommendations.push('定期监测体重变化')
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}
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if (weeklyChange.trend === 'increase' && weeklyChange.percent > 3) {
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recommendations.push('近期体重增长较快，建议减少零食摄入')
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} else if (weeklyChange.trend === 'decrease' && weeklyChange.percent < -3) {
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recommendations.push('近期体重下降，注意观察食欲和精神状态')
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}
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return recommendations.join('；') + '。'
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}
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}
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export default new WeightManager()
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