389 lines
10 KiB
JavaScript
389 lines
10 KiB
JavaScript
import { injectPage } from '@jdmini/api'
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const { getWorksheetDetail, checkPoints, deductPoints } = require('../../utils/api.js')
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const { DATA_BASE_URL } = require('../../utils/config.js')
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Page(injectPage({})({
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data: {
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dataBaseUrl: DATA_BASE_URL,
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id: null,
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detail: {},
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recommended: [],
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loading: false,
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downloadedPath: ''
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},
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onLoad(options) {
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if (options.id) {
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this.setData({ id: Number(options.id) })
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this.loadDetail()
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}
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},
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onShareAppMessage() {
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const userId = wx.getStorageSync('userId')
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let path = `/pages/detail/detail?id=${this.data.id}`
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// 携带邀请人ID
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if (userId) {
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path += `&inviter=${userId}`
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}
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return {
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title: this.data.detail.title || '儿童练习表',
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path: path,
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imageUrl: DATA_BASE_URL + this.data.detail.coverurl
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}
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},
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// 加载详情
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async loadDetail() {
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try {
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this.setData({ loading: true })
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const res = await getWorksheetDetail(this.data.id)
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if (res.success) {
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// 设置导航栏标题
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wx.setNavigationBarTitle({
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title: res.data.detail.title || '练习表详情'
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})
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this.setData({
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detail: res.data.detail || {},
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recommended: res.data.recommended || [],
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loading: false
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})
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}
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} catch (error) {
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console.error('加载详情失败:', error)
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this.setData({ loading: false })
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wx.showToast({
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title: '加载失败',
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icon: 'none'
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})
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}
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},
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// 预览封面大图
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previewImage() {
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const url = DATA_BASE_URL + this.data.detail.coverurl
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wx.previewImage({
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current: url,
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urls: [url]
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})
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},
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// 预览PDF
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previewPdf() {
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const pdfUrl = DATA_BASE_URL + this.data.detail.pdfurl
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wx.showLoading({
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title: '加载中...',
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mask: true
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})
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// 先下载PDF文件
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wx.downloadFile({
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url: pdfUrl,
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success: (res) => {
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wx.hideLoading()
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if (res.statusCode === 200) {
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// 打开PDF文档
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wx.openDocument({
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filePath: res.tempFilePath,
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fileType: 'pdf',
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showMenu: true,
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success: () => {
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console.log('PDF打开成功')
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},
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fail: (err) => {
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console.error('打开PDF失败:', err)
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wx.showToast({
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title: '打开失败',
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icon: 'none'
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})
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}
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})
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}
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},
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fail: (err) => {
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wx.hideLoading()
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console.error('下载PDF失败:', err)
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wx.showToast({
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title: '加载失败',
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icon: 'none'
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})
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}
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})
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},
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// 检查是否已下载过
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hasDownloaded(worksheetId) {
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const downloads = wx.getStorageSync('downloads') || []
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return downloads.some(d => d.id === worksheetId)
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},
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// 下载PDF
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async downloadPdf() {
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// 1. 检查是否登录
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const userId = wx.getStorageSync('userId')
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if (!userId) {
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wx.showModal({
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title: '提示',
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content: '请先登录后再下载',
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confirmText: '去登录',
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cancelText: '取消',
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success: (res) => {
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if (res.confirm) {
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// 保存返回信息
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wx.setStorageSync('returnTo', {
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type: 'navigateTo',
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url: `/pages/detail/detail?id=${this.data.id}`
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})
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wx.navigateTo({
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url: '/pages/login/login'
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})
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}
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}
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})
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return
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}
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// 2. 检查是否已下载过（已下载过的不扣积分）
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const alreadyDownloaded = this.hasDownloaded(this.data.id)
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// 3. 如果未下载过，检查积分
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if (!alreadyDownloaded) {
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try {
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const pointsRes = await checkPoints(userId)
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if (!pointsRes.success || !pointsRes.data.canDownload) {
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wx.showModal({
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title: '积分不足',
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content: `下载需要 ${pointsRes.data?.costPoints || 1} 积分，您当前积分为 ${pointsRes.data?.points || 0}。分享小程序可获得积分！`,
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confirmText: '去分享',
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cancelText: '取消',
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success: (res) => {
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if (res.confirm) {
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// 触发分享
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this.shareToGetPoints()
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}
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}
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})
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return
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}
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} catch (error) {
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console.error('检查积分失败:', error)
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wx.showToast({
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title: '网络错误',
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icon: 'none'
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})
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return
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}
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}
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// 4. 开始下载
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const pdfUrl = DATA_BASE_URL + this.data.detail.pdfurl
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const title = this.data.detail.e_title || this.data.detail.title || 'worksheet'
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const fileName = `${title}.pdf`
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wx.showLoading({
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title: '下载中...',
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mask: true
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})
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try {
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let remainingPoints = null
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// 只有首次下载才扣积分
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if (!alreadyDownloaded) {
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const deductRes = await deductPoints(userId, this.data.id)
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if (!deductRes.success) {
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wx.hideLoading()
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wx.showToast({
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title: deductRes.message || '扣除积分失败',
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icon: 'none'
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})
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return
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}
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remainingPoints = deductRes.data.remainingPoints
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}
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// 下载文件
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wx.downloadFile({
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url: pdfUrl,
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success: (res) => {
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wx.hideLoading()
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if (res.statusCode === 200) {
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const tempFilePath = res.tempFilePath
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// 保存到本地
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const fs = wx.getFileSystemManager()
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const savedPath = `${wx.env.USER_DATA_PATH}/${fileName}`
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fs.saveFile({
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tempFilePath: tempFilePath,
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filePath: savedPath,
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success: (saveRes) => {
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this.setData({ downloadedPath: saveRes.savedFilePath })
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// 保存下载记录
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this.saveDownloadRecord()
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// 根据是否是首次下载显示不同提示
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let content = '文件已保存，是否立即打开？'
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if (!alreadyDownloaded && remainingPoints !== null) {
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content = `文件已保存，消耗1积分，剩余${remainingPoints}积分。是否立即打开？`
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} else if (alreadyDownloaded) {
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content = '文件已保存（已购买，无需扣分）。是否立即打开？'
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}
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wx.showModal({
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title: '下载成功',
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content: content,
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confirmText: '打开',
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cancelText: '稍后',
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success: (modalRes) => {
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if (modalRes.confirm) {
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wx.openDocument({
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filePath: saveRes.savedFilePath,
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fileType: 'pdf',
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showMenu: true
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})
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}
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}
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})
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},
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fail: (err) => {
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console.error('保存文件失败:', err)
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// 如果保存失败，直接打开临时文件
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wx.showModal({
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title: '下载成功',
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content: '是否立即打开？',
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confirmText: '打开',
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cancelText: '稍后',
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success: (modalRes) => {
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if (modalRes.confirm) {
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wx.openDocument({
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filePath: tempFilePath,
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fileType: 'pdf',
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showMenu: true
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})
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}
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}
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})
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}
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})
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}
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},
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fail: (err) => {
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wx.hideLoading()
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console.error('下载失败:', err)
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wx.showToast({
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title: '下载失败',
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icon: 'none'
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})
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}
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})
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} catch (error) {
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wx.hideLoading()
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console.error('下载失败:', error)
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}
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},
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// 分享获取积分
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shareToGetPoints() {
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wx.showToast({
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title: '点击右上角分享给好友',
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icon: 'none',
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duration: 2000
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})
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},
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// 保存下载记录
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saveDownloadRecord() {
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try {
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const downloads = wx.getStorageSync('downloads') || []
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const record = {
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id: this.data.id,
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title: this.data.detail.title,
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e_title: this.data.detail.e_title,
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coverurl: this.data.detail.coverurl,
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pdfurl: this.data.detail.pdfurl,
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category_name: this.data.detail.category_name,
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downloadTime: Date.now(),
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filePath: this.data.downloadedPath
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}
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// 检查是否已存在
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const existIndex = downloads.findIndex(d => d.id === record.id)
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if (existIndex > -1) {
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downloads[existIndex] = record
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} else {
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downloads.unshift(record)
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}
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// 最多保存100条
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if (downloads.length > 100) {
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downloads.pop()
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}
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wx.setStorageSync('downloads', downloads)
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} catch (error) {
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console.error('保存下载记录失败:', error)
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}
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},
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// 打印PDF
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printPdf() {
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const pdfUrl = DATA_BASE_URL + this.data.detail.pdfurl
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wx.showLoading({
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title: '准备打印...',
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mask: true
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})
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// 先下载PDF
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wx.downloadFile({
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url: pdfUrl,
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success: (res) => {
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wx.hideLoading()
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if (res.statusCode === 200) {
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// 微信小程序没有直接打印API，引导用户通过打开文档后使用系统打印
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wx.openDocument({
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filePath: res.tempFilePath,
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fileType: 'pdf',
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showMenu: true,
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success: () => {
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wx.showToast({
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title: '请点击右上角菜单进行打印',
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icon: 'none',
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duration: 3000
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})
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},
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fail: (err) => {
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console.error('打开PDF失败:', err)
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wx.showToast({
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title: '打开失败',
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icon: 'none'
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})
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}
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})
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}
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},
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fail: (err) => {
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wx.hideLoading()
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console.error('下载失败:', err)
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wx.showToast({
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title: '加载失败',
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icon: 'none'
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})
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}
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})
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},
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// 跳转到其他详情
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goDetail(e) {
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const id = e.currentTarget.dataset.id
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wx.redirectTo({
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url: `/pages/detail/detail?id=${id}`
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})
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}
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}))
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