/**
 * 文件相关controller
 * @author: feng.chen<feng.chen@yoho.cn>
 * @date: 2017/04/13
 */
'use strict';

const Context = require('../common/context');
const FileService = require('../service/file-service');
const Api = require('../common/api');
const fs = require('fs');
const _ = require('lodash');

class FileController extends Context {
    constructor() {
        super();
        this.api = this.instance(Api);
        this.fileService = this.instance(FileService);
    }
    uploadImage(req, res, next) {
        let files = req.files && req.files.file || [];
        let errTip = null;

        if (!_.isArray(files)) {
            files = [files];
        }

        req.body.files = [];
        _.each(files, file => {

            let types = file.type.split('/');

            if (!types || types[0] !== 'image') {
                errTip = '上传文件格式不正确！';
            }

            if (file.size > 10 * 1024 * 1024) {
                errTip = '上传文件尺寸太大！';
            }
            req.body.files.push(fs.createReadStream(file.path));
            req.body.files.push(file.name);
        });

        if (errTip) {
            return res.status(403).send({
                message: errTip
            });
        }
        this.api.upload('http://upload.static.yohobuy.com', {
            fileData: req.body.files,
            project: req.body.bucket
        }).then(result => {
            if (result.code === 200 && _.get(result, 'data.imagesList.length', 0)) {
                result.data.imagesList = _.map(result.data.imagesList, imgUrl => {
                    return this.fileService.getAbsoluteUrl(imgUrl, req.body.bucket);
                });
            }
            res.json(result);
        }).catch(next);
    }
}

module.exports = FileController;