filesafe/controllers/utilsController.js

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const path = require('path')
const config = require('../config.js')
const fs = require('fs')
const gm = require('gm')
const ffmpeg = require('fluent-ffmpeg')
const db = require('knex')(config.database)
const units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
const utilsController = {}
utilsController.imageExtensions = ['.webp', '.jpg', '.jpeg', '.bmp', '.gif', '.png']
utilsController.videoExtensions = ['.webm', '.mp4', '.wmv', '.avi', '.mov', '.mkv']
utilsController.getPrettyDate = date => {
return date.getFullYear() + '-' +
(date.getMonth() + 1) + '-' +
date.getDate() + ' ' +
(date.getHours() < 10 ? '0' : '') +
date.getHours() + ':' +
(date.getMinutes() < 10 ? '0' : '') +
date.getMinutes() + ':' +
(date.getSeconds() < 10 ? '0' : '') +
date.getSeconds()
}
utilsController.getPrettyBytes = num => {
// MIT License
// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
if (!Number.isFinite(num)) { return num }
const neg = num < 0
if (neg) { num = -num }
if (num < 1) { return (neg ? '-' : '') + num + ' B' }
const exponent = Math.min(Math.floor(Math.log10(num) / 3), units.length - 1)
const numStr = Number((num / Math.pow(1000, exponent)).toPrecision(3))
const unit = units[exponent]
return (neg ? '-' : '') + numStr + ' ' + unit
}
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utilsController.authorize = async (req, res) => {
const token = req.headers.token
if (token === undefined) {
res.status(401).json({ success: false, description: 'No token provided.' })
return
}
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const user = await db.table('users').where('token', token).first()
if (user) { return user }
res.status(401).json({ success: false, description: 'Invalid token.' })
}
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utilsController.generateThumbs = (file, basedomain) => {
const ext = path.extname(file.name).toLowerCase()
const isVideoExt = utilsController.videoExtensions.includes(ext)
const isImageExt = utilsController.imageExtensions.includes(ext)
if ((!isVideoExt && !isImageExt) ||
(isVideoExt && config.uploads.generateThumbnails.video !== true) ||
(isImageExt && config.uploads.generateThumbnails.image !== true)) {
return
}
const thumbname = path.join(__dirname, '..', config.uploads.folder, 'thumbs', file.name.slice(0, -ext.length) + '.png')
fs.access(thumbname, error => {
if (error && error.code === 'ENOENT') {
if (isVideoExt) {
ffmpeg(path.join(__dirname, '..', config.uploads.folder, file.name))
.thumbnail({
timestamps: ['1%'],
filename: '%b.png',
folder: path.join(__dirname, '..', config.uploads.folder, 'thumbs'),
size: '200x?'
})
.on('error', error => console.log('Error - ', error.message))
} else if (isImageExt) {
const size = {
width: 200,
height: 200
}
gm(path.join(__dirname, '..', config.uploads.folder, file.name))
.resize(size.width, size.height + '>')
.gravity('Center')
.extent(size.width, size.height)
.background('transparent')
.write(thumbname, error => {
if (error) { console.log('Error - ', error) }
})
}
}
})
}
utilsController.deleteFile = async file => {
const ext = path.extname(file).toLowerCase()
return new Promise((resolve, reject) => {
fs.stat(path.join(__dirname, '..', config.uploads.folder, file), (error, stats) => {
if (error) { return reject(error) }
fs.unlink(path.join(__dirname, '..', config.uploads.folder, file), error => {
if (error) { return reject(error) }
if (!utilsController.imageExtensions.includes(ext) && !utilsController.videoExtensions.includes(ext)) {
return resolve()
}
file = file.substr(0, file.lastIndexOf('.')) + '.png'
fs.stat(path.join(__dirname, '..', config.uploads.folder, 'thumbs/', file), (error, stats) => {
if (error) {
if (error.code !== 'ENOENT') {
console.log(error)
}
return resolve()
}
fs.unlink(path.join(__dirname, '..', config.uploads.folder, 'thumbs/', file), error => {
if (error) { return reject(error) }
return resolve()
})
})
})
})
})
}
// This will return an array of IDs that could not be deleted
utilsController.bulkDeleteFilesByIds = async (ids, user) => {
if (!user) { return }
const files = await db.table('files')
.whereIn('id', ids)
.where(function () {
if (user.username !== 'root') {
this.where('userid', user.id)
}
})
const failedids = ids.filter(id => !files.find(file => file.id === id))
// First, we delete all the physical files
await Promise.all(files.map(file => {
return utilsController.deleteFile(file.name).catch(error => {
// ENOENT is missing file, for whatever reason, then just delete from db anyways
if (error.code !== 'ENOENT') {
console.log(error)
failedids.push(file.id)
}
})
}))
// Second, we filter out failed IDs
const albumids = []
const updateDbIds = files.filter(file => !failedids.includes(file.id))
await Promise.all(updateDbIds.map(file => {
return db.table('files')
.where('id', file.id)
.del()
.then(() => {
if (file.albumid && !albumids.includes(file.albumid)) {
albumids.push(file.albumid)
}
})
.catch(error => {
console.error(error)
failedids.push(file.id)
})
}))
// Third, we update albums, if necessary
await Promise.all(albumids.map(albumid => {
return db.table('albums')
.where('id', albumid)
.update('editedAt', Math.floor(Date.now() / 1000))
}))
return failedids
}
module.exports = utilsController