427 lines
12 KiB
JavaScript
427 lines
12 KiB
JavaScript
// pages/contact/index.js
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const request = require('../../api/request.js');
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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messages: [],
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inputText: '',
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scrollToId: '',
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// 使用本地头像
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userAvatar: '/static/user.png',
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serviceAvatar: '/static/contact.png',
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showGetUser: false,
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userInfo: {},
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appid: '',
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page: 1,
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page_size: 50,
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openid: '',
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total: 0,
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// 是否滚动在底部
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isAtBottom: true,
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// 正在加载更多（顶部分页）
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loadingMore: false,
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad(options) {
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const accountInfo = wx.getAccountInfoSync();
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console.log(accountInfo.miniProgram);
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this.setData({
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appid: accountInfo.miniProgram.appId,
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});
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console.log('contact page onLoad, options:', options);
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// this.getMessages()
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if (wx.getStorageSync('user_info')) {
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this.setData({
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showGetUser: false,
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userInfo: wx.getStorageSync('user_info'),
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});
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this.getMessages()
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// start polling when page loads and user is present
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this.startPolling();
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} else {
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this.setData({
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showGetUser: true,
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});
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}
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// this.setData({
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// appid: accountInfo.miniProgram.appId,
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// });
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// console.log('appId',accountInfo.miniProgram);
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},
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// onShow() {
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// this.getMessages()
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// },
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getMessages() {
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const userInfo = wx.getStorageSync('user_info');
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request('app/messages', 'get', {
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app_id: this.data.appid,
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user_id: userInfo.openid,
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page: this.data.page,
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page_size: this.data.page_size,
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}).then(res => {
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console.log('res', res);
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// generate stable ids across pages so we can prepend without collisions
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const base = (this.data.page - 1) * this.data.page_size;
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const list = res.list.map((item, index) => {
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item.id = 'm' + (base + index);
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item.content = JSON.parse(item.content);
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return item;
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});
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this.setData({
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messages: list,
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total: res.total,
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// only auto-scroll if user is at bottom
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scrollToId: this.data.isAtBottom ? (list[list.length - 1] ? list[list.length - 1].id : '') : this.data.scrollToId
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});
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console.log('messages',list);
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})
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},
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// Load older messages (previous pages) and prepend them to the top
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loadMoreAtTop() {
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if (this.data.loadingMore) return;
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// if we've loaded all messages, skip
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const already = this.data.messages.length || 0;
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if (already >= this.data.total) return;
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// compute next page to fetch
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const nextPage = this.data.page + 1;
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this.setData({ loadingMore: true });
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const userInfo = wx.getStorageSync('user_info');
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const that = this;
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// capture current top-most visible message id to preserve scroll position
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const prevTopId = this.data.messages[0] ? this.data.messages[0].id : null;
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request('app/messages', 'get', {
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app_id: this.data.appid,
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user_id: userInfo.openid,
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page: nextPage,
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page_size: this.data.page_size,
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}).then(res => {
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// map with stable ids based on nextPage
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const base = (nextPage - 1) * that.data.page_size;
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const newList = res.list.map((item, index) => {
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item.id = 'm' + (base + index);
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item.content = JSON.parse(item.content);
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return item;
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});
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// prepend older messages
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const combined = newList.concat(that.data.messages);
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that.setData({
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messages: combined,
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page: nextPage,
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total: res.total,
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}, () => {
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// after render, keep the previous top message in view
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if (prevTopId) {
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// scroll-into-view to the previous top id so viewport doesn't jump
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that.setData({ scrollToId: prevTopId });
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}
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that.setData({ loadingMore: false });
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});
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}).catch(() => {
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that.setData({ loadingMore: false });
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});
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},
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requestUserProfile(e) {
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console.log('user', e.detail);
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const user = e.detail;
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const that = this;
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// wx.setStorageSync('user_info', e.detail.userInfo);
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const accountInfo = wx.getAccountInfoSync();
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wx.login({
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success: function (res) {
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request('api/wechat/miniprogram/login', 'post', {
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"app_id": accountInfo.miniProgram.appId,
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"js_code": res.code,
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"encrypted_data": user.encryptedData,
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"iv": user.iv,
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"raw_data": user.rawData,
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"signature": user.signature
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}).then(resp => {
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wx.setStorageSync('user_info', resp);
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// wx.setStorageSync('open_id', resp.openid);
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this.setData({
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showGetUser: false,
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userInfo: resp
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});
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request('app/user/create', 'post', {
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"app_id": accountInfo.miniProgram.appId,
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"user_avatar": resp.user_avatar,
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"user_id": resp.openid,
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"user_name": resp.user_name
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}).then(resp => {
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that.getMessages()
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// start polling once user info exists
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that.startPolling();
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});
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});
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},
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});
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},
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// Start polling messages every 1 second. Ensures only one interval exists.
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startPolling() {
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if (this.poller) return; // already polling
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// immediate fetch then periodic
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this.getMessages();
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this.poller = setInterval(() => {
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this.getMessages();
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}, 1000);
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},
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// Stop polling and clear interval
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stopPolling() {
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if (this.poller) {
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clearInterval(this.poller);
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this.poller = null;
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}
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},
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// Scroll handlers: stop polling when user scrolls up, resume when reach bottom
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onScroll(e) {
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// e.detail.scrollTop increases when scrolling down. We want to detect upward scroll.
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const scrollTop = e.detail.scrollTop || 0;
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const last = this._lastScrollTop || 0;
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// If user scrolls up (new scrollTop < last), pause polling
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if (scrollTop < last) {
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// user scrolled up
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if (this.data.isAtBottom) {
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// only act if we were previously at bottom
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this.setData({ isAtBottom: false });
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this.stopPolling();
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}
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}
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// detect reaching near top to load more
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if (scrollTop <= 2) {
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// if there are more messages to load and not already loading
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if (!this.data.loadingMore && this.data.messages.length < this.data.total) {
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this.loadMoreAtTop();
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}
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}
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// update lastScrollTop for next event
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this._lastScrollTop = scrollTop;
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},
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onScrollToLower() {
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// user scrolled to bottom (or very near). resume polling if needed
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if (!this.data.isAtBottom) {
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this.setData({ isAtBottom: true });
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this.startPolling();
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// also ensure we scroll to latest message next render
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const lastId = this.data.messages[this.data.messages.length - 1] ? this.data.messages[this.data.messages.length - 1].id : '';
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if (lastId) {
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this.setData({ scrollToId: lastId });
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}
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}
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},
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dismissGetUser() {
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this.setData({
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showGetUser: false
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});
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},
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onReady() {
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// 初始化欢迎消息，带时间分割线
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const now = new Date();
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const timeStr = this.formatTime(now);
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this.setData({
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messages: [],
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scrollToId: 'm1'
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});
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},
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onInput(e) {
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this.setData({
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inputText: e.detail.value
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});
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},
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sendText() {
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const text = this.data.inputText && this.data.inputText.trim();
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if (!text) return;
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const now = new Date();
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const id = 'u' + Date.now();
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const timeStr = this.formatTime(now);
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// 判断是否需要显示时间分割线
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let showTime = false;
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const lastMsg = this.data.messages.length ? this.data.messages[this.data.messages.length - 1] : null;
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if (!lastMsg || now - (lastMsg._ts || now) > 5 * 60 * 1000) showTime = true;
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const msg = {
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id,
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from: 'user',
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type: 'text',
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content: {
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messages: text
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},
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showTime,
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timeStr,
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_ts: now,
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"msg_type": 1,
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receiver_id: '',
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send_time: "刚刚",
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sender_id: this.data.userInfo.openid,
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sender_name: this.data.userInfo.user_name
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};
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const newMessages = this.data.messages.concat(msg);
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this.setData({
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messages: newMessages,
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inputText: ''
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});
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const accountInfo = wx.getAccountInfoSync();
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const userInfo = wx.getStorageSync('user_info')
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request('app/send_message', 'POST', {
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"app_id": accountInfo.miniProgram.appId,
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"content": JSON.stringify({
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messages: text
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}),
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"from_user_id": userInfo.openid,
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"from_user_name": userInfo.user_name,
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"msg_type": 1
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})
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// 等待渲染，确保 scroll-into-view 生效
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setTimeout(() => {
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this.setData({
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scrollToId: id
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});
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}, 50);
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// 模拟客服回复（延迟）
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// setTimeout(() => {
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// const replyNow = new Date();
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// const replyTimeStr = this.formatTime(replyNow);
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// const reply = {
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// id: 's' + Date.now(),
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// from: 'service',
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// type: 'text',
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// content: '收到，客服正在处理中...',
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// showTime: false,
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// timeStr: replyTimeStr,
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// _ts: replyNow
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// };
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// this.setData({
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// messages: this.data.messages.concat(reply),
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// scrollToId: reply.id
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// });
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// }, 800);
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},
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chooseImage() {
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const that = this;
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wx.chooseImage({
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count: 1,
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sizeType: ['compressed', 'original'],
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sourceType: ['album', 'camera'],
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success(res) {
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const tempFilePaths = res.tempFilePaths;
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console.log('选择的图片路径:', res);
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if (tempFilePaths && tempFilePaths.length) {
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const now = new Date();
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const id = 'u' + Date.now();
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const timeStr = that.formatTime(now);
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let showTime = false;
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const lastMsg = that.data.messages.length ? that.data.messages[that.data.messages.length - 1] : null;
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if (!lastMsg || now - (lastMsg._ts || now) > 5 * 60 * 1000) showTime = true;
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const msg = {
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id,
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from: 'user',
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msg_type: '2',
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content: {
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messages:tempFilePaths[0]
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},
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showTime,
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timeStr,
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_ts: now,
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sender_id: that.data.userInfo.openid,
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sender_name: that.data.userInfo.user_name
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};
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that.setData({
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messages: that.data.messages.concat(msg)
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});
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setTimeout(() => {
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that.setData({
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scrollToId: id
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});
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}, 50);
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// 模拟客服返回图片确认
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// setTimeout(() => {
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// const replyNow = new Date();
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// const replyTimeStr = that.formatTime(replyNow);
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// const reply = {
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// id: 's' + Date.now(),
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// from: 'service',
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// type: 'text',
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// content: '已收到图片，感谢！',
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// showTime: false,
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// timeStr: replyTimeStr,
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// _ts: replyNow
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// };
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// that.setData({
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// messages: that.data.messages.concat(reply)
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// });
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// setTimeout(() => {
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// that.setData({
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// scrollToId: reply.id
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// });
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// }, 50);
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// }, 1200);
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}
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}
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});
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},
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// 时间格式化
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formatTime(date) {
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const y = date.getFullYear();
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const m = (date.getMonth() + 1).toString().padStart(2, '0');
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const d = date.getDate().toString().padStart(2, '0');
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const h = date.getHours().toString().padStart(2, '0');
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const min = date.getMinutes().toString().padStart(2, '0');
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return `${y}年${m}月${d}日 ${h}:${min}`;
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},
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previewImage(e) {
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const src = e.currentTarget.dataset.src;
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if (!src) return;
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wx.previewImage({
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urls: [src],
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current: src
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});
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},
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onShow() {
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// resume polling when page becomes visible
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if (wx.getStorageSync('user_info')) {
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this.startPolling();
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}
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},
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onHide() {
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// stop polling when leaving page
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this.stopPolling();
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},
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onUnload() {
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// cleanup
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this.stopPolling();
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},
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onPullDownRefresh() {},
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onReachBottom() {},
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onShareAppMessage() {}
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}); |