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"use strict";
var path = require('path'),
Promise = require('bluebird'),
fs = Promise.promisifyAll(require('fs-extra')),
multer = require('multer'),
_ = require('lodash');
/**
* Local Data Storage
*
* @param {Object} appconfig The application configuration
*/
module.exports = {
_uploadsPath: './repo/uploads',
_uploadsThumbsPath: './data/thumbs',
uploadImgHandler: null,
/**
* Initialize Local Data Storage model
*
* @param {Object} appconfig The application config
* @return {Object} Local Data Storage model instance
*/
init(appconfig) {
this._uploadsPath = path.resolve(ROOTPATH, appconfig.paths.repo, 'uploads');
this._uploadsThumbsPath = path.resolve(ROOTPATH, appconfig.paths.data, 'thumbs');
this.createBaseDirectories(appconfig);
this.initMulter(appconfig);
return this;
},
/**
* Init Multer upload handlers
*
* @param {Object} appconfig The application config
* @return {boolean} Void
*/
initMulter(appconfig) {
this.uploadImgHandler = multer({
storage: multer.diskStorage({
destination: (req, f, cb) => {
cb(null, path.resolve(ROOTPATH, appconfig.paths.data, 'temp-upload'));
}
}),
fileFilter: (req, f, cb) => {
//-> Check filesize (3 MB max)
if(f.size > 3145728) {
return cb(null, false);
}
//-> Check MIME type (quick check only)
if(!_.includes(['image/png', 'image/jpeg', 'image/gif', 'image/webp'], f.mimetype)) {
return cb(null, false);
}
cb(null, true);
}
}).array('imgfile', 20);
return true;
},
/**
* Creates a base directories (Synchronous).
*
* @param {Object} appconfig The application config
* @return {Void} Void
*/
createBaseDirectories(appconfig) {
winston.info('[SERVER] Checking data directories...');
try {
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.data));
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.data, './cache'));
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.data, './thumbs'));
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.data, './temp-upload'));
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.repo));
fs.ensureDirSync(path.resolve(ROOTPATH, appconfig.paths.repo, './uploads'));
} catch (err) {
winston.error(err);
}
winston.info('[SERVER] Data and Repository directories are OK.');
return;
},
/**
* Gets the uploads path.
*
* @return {String} The uploads path.
*/
getUploadsPath() {
return this._uploadsPath;
},
/**
* Gets the thumbnails folder path.
*
* @return {String} The thumbs path.
*/
getThumbsPath() {
return this._uploadsThumbsPath;
},
/**
* Check if filename is valid and unique
*
* @param {String} f The filename
* @param {String} fld The containing folder
* @return {Promise<String>} Promise of the accepted filename
*/
validateUploadsFilename(f, fld) {
let fObj = path.parse(f);
let fname = _.chain(fObj.name).trim().toLower().kebabCase().value().replace(/[^a-z0-9\-]+/g, '');
let fext = _.toLower(fObj.ext);
if(!_.includes(['.jpg', '.jpeg', '.png', '.gif', '.webp'], fext)) {
fext = '.png';
}
f = fname + fext;
let fpath = path.resolve(this._uploadsPath, fld, f);
return fs.statAsync(fpath).then((s) => {
throw new Error('File ' + f + ' already exists.');
}).catch((err) => {
if(err.code === 'ENOENT') {
return f;
}
throw err;
});
},
};