import { getOssToken } from "@/service/oss.js"

/**
 * dispose oss直传文件(视频，图片)，传入以下两个参数，返回一个上传后的Array[urlLink] Promise对象
 * @params pathList Array(String || Object[String]) 需要上传到oss的文件列表
 * @params fileType String 上传到oss的文件类型，如：image、video
 * 图片上传调用：let imageList = await dispose(res.tempFilePaths, 'image');
 * 视频上传调用：let videoList = await dispose([res.tempFilePath], 'video');
 */
export async function dispose(pathList = [], fileType = 'image'){
	let ossResult = await getOssToken(); // 获取oss权限
	let oss = ossResult.data;
	
	let premiseList = [];
	pathList.map((item, index) => {
		let promiseItem = new Promise((resolve, reject) => {
			let tiemr = new Date();
			let ext = getFileExtendingName(item.tempFilePath || item);
			let nameStr = oss.dir + tiemr.getTime() + index + ext;
			
			uni.uploadFile({
				url: oss.host,
				filePath: item.tempFilePath || item,
				name: 'file',
				fileType,
				formData: {
					'key': nameStr,
					"OSSAccessKeyId": oss.accessid,
					"policy": oss.policy,
					"Signature": oss.signature,
					"success_action_status": 200,
				},
				success: result => {
					if (result.statusCode == 200) {
						let fileUrl = oss.host + '/' + nameStr;
						resolve(fileUrl);
					}else{
						reject(result);
					}
				},
				fail: err => {
					reject(err);
				}
			})
		})
		premiseList.push(promiseItem);
	});
	
	return Promise.all(premiseList);
}

// 获取文件后缀
function getFileExtendingName(filename){
  var reg = /\.[^\.]+$/;
  var matches = reg.exec(filename);
  if (matches) {
    return matches[0];
  }
  return '';
}