import { message } from './message.js'
import { http } from '@/common/api/index.js';

export default class UploadFileToOSS {

    /**
     * [constructor description]
     * @param  {[Array]} files [chooseImg选中的tempFilePaths、chooseVideo选中的rempFilePath]
     * @param  {[Object]} json  [success每上传成功一张调用 complete全部上传完成调用]
     * @return {[void]}       [description]
     */

    constructor(files, json) {
        if (!Array.isArray(files)) {
            throw new Error('Class UploadFileToOSS parameter must be an array');
        }
        this.data = [];
        this.fn = json.success;
        this.complete = json.complete;
        this.files = files;
        this.fileLen = this.files.length;
        this.curIndex = 0;
        uni.showLoading({
            title: global.i18n.t('上传中')
        });
        this.upload();
    }

    upload() {
        http.get(global.apiUrls.queryAutograph).then(res => {
            if (res.data.code == 1) {
                let ossData = res.data.data;
                uni.uploadFile({
                    url: ossData.host,
                    filePath: this.files[this.curIndex],
                    name: 'file',
                    formData: {
                        key: ossData.key, // 文件名
                        policy: ossData.policy, // 后台获取超时时间
                        OSSAccessKeyId: ossData.OSSAccessKeyId, // 后台获取临时ID
                        success_action_status: ossData.success_action_status, // 让服务端返回200,不然，默认会返回204
                        signature: ossData.signature // 后台获取签名
                    },
                    success: res => {
                        console.log(res);
                        if (res.statusCode == 200) {
                            this.data.push({
                                id: ossData.key,
                                path: ossData.host + '/' + ossData.key
                            });
                            if (this.fn) this.fn(this.data);
                        } else {
                            message.info(global.i18n.t('上传失败，请重试'))
                        }
                    },
                    complete: () => {
                        this.curIndex++; // 当前文件执行完上传后，开始上传下一张
                        if (this.curIndex == this.fileLen) { // 当文件传完时，停止调用
                            this.complete(this.data);
                            uni.hideLoading()
                        } else { // 若文件还没有传完，则继续调用函数
                            this.upload();
                        }
                    }
                });
            }
        })

    }
}