edu-mini/model/upload.js

import {
    toast
} from "../utils/utils";
import dayjs from "dayjs";
import Api from "./api";

const COS = require('../utils/cos-wx-sdk-v5')

const Bucket = 'college-file-1302740389';
const Region = 'ap-beijing';

class Upload {
    static getCos() {
        return new COS({
            // 必选参数
            async getAuthorization(options, callback) {
                const res = await Api.getCosInfo();
                callback({
                    TmpSecretId: res.data.credentials.tmpSecretId,
                    TmpSecretKey: res.data.credentials.tmpSecretKey,
                    XCosSecurityToken: res.data.credentials.sessionToken,
                    StartTime: res.data.startTime,
                    ExpiredTime: res.data.expiredTime,
                });
            }
        });
    }

    static async uploadRes(uploadPath = '', file) {
        let originalName = file.name || '';
        let filePath = file.path || "";
        let pathName = filePath ? filePath.substr(filePath.indexOf('//tmp/') + 6) : file.url.substr(file.url.lastIndexOf('/') + 1);
        
        //获取文件后缀（包含.）
        let ext = pathName.substr(pathName.lastIndexOf('.'));
        //文件原始名称
        let fileName = originalName.split(ext)[0];
        // 对象键的最大长度为850个字节（按照一个汉字两个字节计算，如果原始文件名超过200个汉字就截断）
        fileName = fileName.length > 200? fileName.substr(0, 200) : fileName;
        //时间戳
        let timestamp = dayjs().valueOf();
        //文件名称：文件原始名称 + 时间戳 + 文件在本地的临时路径
        let name = `${fileName? fileName + '_' : ''}${timestamp}_${pathName}`;
        // if (file.type == 'image') {
        //     name = dayjs().valueOf() + '.png';
        // }
        // if (file.type == 'video') {
        //     name = dayjs().valueOf() + '.mp4';
        // }
        // if (file.name) {
        //     name = file.name;
        // }
        const cos = this.getCos();
        // name = name || file.url.substr(file.url.lastIndexOf('/') + 1);
        return new Promise((resolve, reject) => {
            cos.postObject({
                Bucket: Bucket,
                Region: Region,
                Key: uploadPath + name,
                FilePath: file.url
            }, async function (err, data) {
                if (!err) {
                    // if (data.headers.location) {
                    //     file.url = data.headers.location;
                    // } else {
                    //     file.url = `https://${data.Location}`;
                    // }
                    if(!data.Location) {
                        let uploadErr = '上传失败！';
                        toast(uploadErr);
                        reject(uploadErr);
                        return;
                    }
                    // console.log(data.Location);
                    file.url = `https://${data.Location}`;
                    file.fileExtension = file.url.substr(file.url.lastIndexOf('.') + 1);
                    resolve()
                } else {
                    toast(err.error.Message)
                    reject(err.error.Message)
                }
            });
        });
    }

    static async deleteRes(uploadPath = '', url) {
        return new Promise((resolve, reject) => {
            const cos = this.getCos();
            const name = url.substr(url.lastIndexOf('/') + 1);

            cos.deleteObject({
                Bucket: Bucket,
                Region: Region,
                Key: uploadPath + name,
            }, function (err, data) {
                if (!err) {
                    resolve()
                } else {
                    toast(err.msg)
                }
            });
        });
    }
}


export default Upload