btrtracks/src/common/async.js

139 lines
3.2 KiB
JavaScript

import {exec} from 'child_process'
import path from 'path'
import fs from 'fs-extra'
import url from 'url'
import qs from 'querystring'
function filewalker (dir, done) {
let results = []
fs.readdir(dir, function (err, list) {
if (err) return done(err)
let pending = list.length
if (!pending) return done(null, results)
list.forEach(function (file) {
file = path.resolve(dir, file)
fs.stat(file, function (err, stat) {
if (err) return done(err)
// If directory, execute a recursive call
if (stat && stat.isDirectory()) {
filewalker(file, function (err, res) {
if (err) return done(err)
results = results.concat(res)
if (!--pending) done(null, results)
})
} else {
results.push(file)
if (!--pending) done(null, results)
}
})
})
})
}
async function insertDB (db, track) {
let ensure = await db.get('SELECT * FROM Track WHERE title=? AND artist=? AND album=?', track.title, track.artist, track.album || '')
if (ensure) {
return null
}
await db.run('INSERT INTO Track VALUES (NULL,?,?,?,?,?,?,?,?)',
[track.title, track.artist, track.file, track.album || '', track.genre || null, track.track || null,
track.year || null, Math.floor(track.duration)])
return track
}
function getFiles (dir) {
return new Promise((resolve, reject) => {
filewalker(dir, (err, files) => {
if (err) return reject(err)
resolve(files)
})
})
}
function promiseExec (cmd, opts) {
return new Promise((resolve, reject) => {
exec(cmd, opts, function (err, stdout, stderr) {
if (err) return reject(err)
resolve({stdout, stderr})
})
})
}
function askAsync (rl, q) {
return new Promise((resolve, reject) => {
rl.question(q, resolve)
})
}
function copyAsync (fsrc, fdst) {
return new Promise((resolve, reject) => {
let source = fs.createReadStream(path.resolve(fsrc))
let dest = fs.createWriteStream(path.resolve(fdst))
source.pipe(dest)
source.on('end', resolve)
source.on('error', reject)
})
}
function HTTP_GET (link, headers = {}) {
let parsed = url.parse(link)
let opts = {
host: parsed.hostname,
port: parsed.port,
path: parsed.path,
headers: {
'Accept': '*/*',
'Accept-Language': 'en-US'
}
}
if (headers) {
opts.headers = Object.assign(opts.headers, headers)
}
let reqTimeOut
let httpModule = parsed.protocol === 'https:' ? require('https') : require('http')
return new Promise((resolve, reject) => {
let req = httpModule.get(opts, (res) => {
if (res.statusCode === 302 || res.statusCode === 301) {
return reject(new Error('Invalid endpoint'))
}
let data = ''
reqTimeOut = setTimeout(() => {
req.abort()
data = null
reject(new Error('Request took too long!'))
}, 5000)
res.on('data', (chunk) => {
data += chunk
})
res.on('end', () => {
clearTimeout(reqTimeOut)
resolve(data)
})
}).on('error', (e) => {
reject(new Error(e.message))
})
req.setTimeout(10000)
})
}
export default {getFiles, promiseExec, askAsync, insertDB, copyAsync, GET: HTTP_GET}