const { listToMatrix } = require('../../lib/util.js');
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var COS = require('../../lib/cos-wx-sdk-v5.js');
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const config = require('../../config.js');
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const util = require('../../lib/util.js');
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var cos = new COS({
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getAuthorization: function (options, callback) {
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wx.request({
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method: 'GET',
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url: config.stsUrl, // 服务端签名，参考 server 目录下的两个签名例子
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dataType: 'json',
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success: function (result) {
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var data = result.data;
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callback({
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TmpSecretId: data.credentials && data.credentials.tmpSecretId,
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TmpSecretKey: data.credentials && data.credentials.tmpSecretKey,
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XCosSecurityToken: data.credentials && data.credentials.sessionToken,
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ExpiredTime: data.expiredTime,
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});
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}
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});
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},
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});
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Page({
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data: {
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// 相册列表数据
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albumList: [],
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// 图片布局列表（二维数组，由`albumList`计算而得）
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layoutList: [],
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// 布局列数
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layoutColumnSize: 3,
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// 是否显示loading
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showLoading: false,
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// loading提示语
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loadingMessage: '',
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// 是否显示toast
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showToast: false,
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// 提示消息
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toastMessage: '',
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// 是否显示动作命令
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showActionsSheet: false,
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// 当前操作的图片
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imageInAction: '',
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// 图片预览模式
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previewMode: false,
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// 当前预览索引
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previewIndex: 0,
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// 切换动画的时间
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slideDuration: 400,
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},
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onShareAppMessage: function (res) {
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return {
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title: 'COS 上传示例 - 共享相册',
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path: this.route,
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}
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},
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// 显示loading提示
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showLoading(loadingMessage) {
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this.setData({ showLoading: true, loadingMessage });
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},
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// 隐藏loading提示
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hideLoading() {
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this.setData({ showLoading: false, loadingMessage: '' });
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},
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// 显示toast消息
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showToast(toastMessage) {
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this.setData({ showToast: true, toastMessage });
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},
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// 隐藏toast消息
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hideToast() {
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this.setData({ showToast: false, toastMessage: '' });
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},
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// 隐藏动作列表
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hideActionSheet() {
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this.setData({ showActionsSheet: false, imageInAction: '' });
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},
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onLoad() {
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var self = this;
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this.renderAlbumList();
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this.getAlbumList(function (list) {
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list = self.data.albumList.concat(list || {});
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if (!list.length) {
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list = [];
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}
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list = list.reverse();
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self.setData({ 'albumList': list });
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self.renderAlbumList();
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});
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},
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// 获取相册列表
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getAlbumList(callback) {
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this.showLoading('加载列表中…');
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setTimeout(() => this.hideLoading(), 1000);
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cos.getBucket({
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Bucket: config.Bucket,
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Region: config.Region,
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Prefix: config.albumDir
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}, function (err, data) {
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if (data) {
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var list = (data && data.Contents || [])
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.map((v) => 'https://' + config.Bucket + '.cos.' + config.Region + '.myqcloud.com/' + util.camSafeUrlEncode(v.Key).replace(/%2F/g, '/'))
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.filter((v) => /\.(jpg|png|gif)$/.test(v));
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callback(list);
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} else {
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callback([]);
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}
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});
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},
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// 渲染相册列表
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renderAlbumList() {
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let layoutColumnSize = this.data.layoutColumnSize;
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let layoutList = [];
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var imageList = [].concat(this.data.albumList);
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imageList.unshift({type:'add'});
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layoutList = listToMatrix(imageList, layoutColumnSize);
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this.setData({ layoutList });
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},
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// 从相册选择照片或拍摄照片
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chooseImage() {
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var self = this;
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wx.chooseImage({
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count: 9,
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sizeType: ['original', 'compressed'],
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sourceType: ['album', 'camera'],
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success: (res) => {
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this.showLoading('正在上传图片…');
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res.tempFilePaths.forEach(function (filePath) {
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var Key = config.albumDir + util.getRandFileName(filePath);
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filePath && cos.postObject({
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Bucket: config.Bucket,
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Region: config.Region,
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Key: Key,
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FilePath: filePath
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}, function (err, data) {
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if (data) {
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let albumList = self.data.albumList;
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albumList.unshift('https://' + data.Location);
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self.setData({ albumList });
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self.renderAlbumList();
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}
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self.hideLoading();
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});
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});
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},
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});
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},
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// 进入预览模式
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enterPreviewMode(event) {
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var self = this;
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if (this.data.showActionsSheet) {
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return;
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}
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let imageUrl = event.target.dataset.src;
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let previewIndex = this.data.albumList.indexOf(imageUrl);
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this.setData({ slideDuration: 0 });
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setTimeout(function () {
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self.setData({ previewMode: true, previewIndex: previewIndex});
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setTimeout(function () {
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self.setData({ slideDuration: 400 });
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}, 400);
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});
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},
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// 退出预览模式
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leavePreviewMode() {
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this.setData({ previewMode: false, previewIndex: 0 });
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},
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// 显示可操作命令
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showActions(event) {
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this.setData({ showActionsSheet: true, imageInAction: event.target.dataset.src });
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},
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// 下载图片
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downloadImage() {
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this.showLoading('正在保存图片…');
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console.log('download_image_url', this.data.imageInAction);
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wx.downloadFile({
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url: this.data.imageInAction,
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type: 'image',
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success: (resp) => {
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wx.saveFile({
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tempFilePath: resp.tempFilePath,
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success: (resp) => {
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this.showToast('图片保存成功');
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},
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fail: (resp) => {
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console.log('fail', resp);
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},
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complete: (resp) => {
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console.log('complete', resp);
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this.hideLoading();
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},
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});
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},
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fail: (resp) => {
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console.log('fail', resp);
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},
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});
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this.setData({ showActionsSheet: false, imageInAction: '' });
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},
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// 删除图片
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deleteImage() {
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let imageUrl = this.data.imageInAction;
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var m = imageUrl.match(/^https:\/\/[^\/]+\/([^#?]+)/);
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var Key = m && m[1] || '';
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if (Key) {
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this.showLoading('正在删除图片…');
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this.setData({ showActionsSheet: false, imageInAction: '' });
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cos.deleteObject({
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Bucket: config.Bucket,
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Region: config.Region,
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Key: Key,
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}, (err, data)=>{
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if (data) {
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let index = this.data.albumList.indexOf(imageUrl);
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if (~index) {
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let albumList = this.data.albumList;
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albumList.splice(index, 1);
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this.setData({ albumList });
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this.renderAlbumList();
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}
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this.showToast('图片删除成功');
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} else {
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this.showToast('图片删除失败');
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}
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this.hideLoading();
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});
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}
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},
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});
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