btrtracks/server.js

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2.8 KiB
JavaScript
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2018-10-05 10:36:57 +00:00
#!/usr/bin/env babel-node
import path from 'path'
import sqlite from 'sqlite'
import Promise from 'bluebird'
import express from 'express'
require('express-async-errors')
const values = require(path.join(__dirname, 'values.json'))
const tracksPerPage = 100
const dbPromise = Promise.resolve()
.then(() => sqlite.open(path.join(__dirname, values.database), { Promise, cache: true }))
.then(db => db.migrate())
const app = express()
const port = process.env.PORT || 3000
const router = express.Router()
router.get('/tracks', async (req, res) => {
let page = parseInt(req.query.page) || 1
if (isNaN(page)) {
page = 1
}
let db = await dbPromise
let count = (await db.get('SELECT COUNT(*) FROM Track'))['COUNT(*)']
let pageCount = Math.ceil(count / tracksPerPage)
if (page > pageCount) page = pageCount
let offset = (page - 1) * tracksPerPage
let tracks = await db.all('SELECT * FROM Track LIMIT ? OFFSET ?', tracksPerPage, offset)
for (let i in tracks) {
delete tracks[i].file
}
res.jsonp({
page, count, pageCount, tracks
})
})
router.get('/tracks/search', async (req, res) => {
let query = req.query.string
let db = await dbPromise
let tracks = await db.all('SELECT * FROM Track WHERE title || ifnull(artist,\'\') || ifnull(album,\'\') LIKE ? LIMIT 100', `%${query}%`)
for (let i in tracks) {
delete tracks[i].file
}
res.jsonp(tracks)
})
router.get('/track/:id', async (req, res, next) => {
let id = req.params.id
let db = await dbPromise
let track = await db.get('SELECT * FROM Track WHERE id = ?', id)
if (!track) return next(new Error('404 file not found'))
delete track.file
res.jsonp(track)
})
router.get('/playlists', async (req, res, next) => {
let db = await dbPromise
let playlists = await db.all('SELECT * FROM Playlist')
res.jsonp(playlists)
})
router.get('/playlist/:id', async (req, res, next) => {
let id = req.params.id
let db = await dbPromise
let playlist = await db.get('SELECT title FROM Playlist WHERE id = ?', id)
if (!playlist) return next(new Error('404 file not found'))
let tracks = await db.all('SELECT trackId FROM PlaylistEntry WHERE playlistId = ?', id)
playlist.tracks = tracks
res.jsonp(playlist)
})
router.get('/serve/by-id/:id', async (req, res, next) => {
let id = req.params.id
let db = await dbPromise
let track = await db.get('SELECT file FROM Track WHERE id = ?', id)
if (!track) return next(new Error('404 file not found'))
res.set('Cache-Control', 'public, max-age=31557600')
res.sendFile(path.resolve(track.file))
})
router.use((err, req, res, next) => {
console.error(err)
res.status(404).jsonp({error: 404})
})
app.use('/api', router)
app.use('/', express.static(path.join(__dirname, 'public')))
app.listen(port, '127.0.0.1', function () {
console.log(`app running on port ${port}`)
})