iptv/scripts/helper.js

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const fs = require('fs')
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const path = require('path')
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const playlistParser = require('iptv-playlist-parser')
const axios = require('axios')
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const zlib = require('zlib')
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const epgParser = require('epg-parser')
const urlParser = require('url')
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const langs = require('langs')
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const escapeStringRegexp = require('escape-string-regexp')
const markdownInclude = require('markdown-include')
let cache = {}
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let helper = {}
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helper.sortBy = function (arr, fields) {
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return arr.sort((a, b) => {
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for (let field of fields) {
if (a[field].toLowerCase() < b[field].toLowerCase()) {
return -1
}
if (a[field].toLowerCase() > b[field].toLowerCase()) {
return 1
}
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}
return 0
})
}
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helper.createDir = function (dir) {
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if (!fs.existsSync(dir)) {
fs.mkdirSync(dir)
}
}
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helper.compileMarkdown = function (filepath) {
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return markdownInclude.compileFiles(path.resolve(__dirname, filepath))
}
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helper.escapeStringRegexp = function (scring) {
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return escapeStringRegexp(string)
}
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helper.getISO6391Name = function (code) {
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return langs.has('3', code) ? langs.where('3', code).name : null
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}
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helper.getISO6391Code = function (name) {
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return langs.has('name', name) ? langs.where('name', name)['3'] : null
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}
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helper.parsePlaylist = function (filename) {
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const content = this.readFile(filename)
const result = playlistParser.parse(content)
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return new Playlist(result)
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}
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helper.parseEPG = async function (url) {
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const content = await this.getEPG(url)
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const result = epgParser.parse(content)
const channels = {}
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for (let channel of result.channels) {
channels[channel.id] = channel
}
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return Promise.resolve({
url,
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channels
})
}
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helper.getEPG = function (url) {
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return new Promise((resolve, reject) => {
var buffer = []
axios({
method: 'get',
url: url,
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responseType: 'stream',
timeout: 60000
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})
.then(res => {
let stream
if (/\.gz$/i.test(url)) {
let gunzip = zlib.createGunzip()
res.data.pipe(gunzip)
stream = gunzip
} else {
stream = res.data
}
stream
.on('data', function (data) {
buffer.push(data.toString())
})
.on('end', function () {
resolve(buffer.join(''))
})
.on('error', function (e) {
reject(e)
})
})
.catch(e => {
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reject(e)
})
})
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}
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helper.readFile = function (filename) {
return fs.readFileSync(path.resolve(__dirname) + `/../${filename}`, { encoding: 'utf8' })
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}
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helper.appendToFile = function (filename, data) {
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fs.appendFileSync(path.resolve(__dirname) + '/../' + filename, data)
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}
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helper.createFile = function (filename, data = '') {
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fs.writeFileSync(path.resolve(__dirname) + '/../' + filename, data)
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}
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helper.getBasename = function (filename) {
return path.basename(filename, path.extname(filename))
}
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helper.getUrlPath = function (u) {
let parsed = urlParser.parse(u)
let searchQuery = parsed.search || ''
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let path = parsed.host + parsed.pathname + searchQuery
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return path.toLowerCase()
}
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helper.filterPlaylists = function (arr, include = '', exclude = '') {
if (include) {
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const included = include.split(',').map(filename => `channels/${filename}.m3u`)
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return arr.filter(i => included.indexOf(i.url) > -1)
}
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if (exclude) {
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const excluded = exclude.split(',').map(filename => `channels/${filename}.m3u`)
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return arr.filter(i => excluded.indexOf(i.url) === -1)
}
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return arr
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}
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helper.generateTable = function (data, options) {
let output = '<table>\n'
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output += '\t<thead>\n\t\t<tr>'
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for (let column of options.columns) {
output += `<th align="${column.align}">${column.name}</th>`
}
output += '</tr>\n\t</thead>\n'
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output += '\t<tbody>\n'
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for (let item of data) {
output += '\t\t<tr>'
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let i = 0
for (let prop in item) {
const column = options.columns[i]
let nowrap = column.nowrap
let align = column.align
output += `<td align="${align}"${nowrap ? ' nowrap' : ''}>${item[prop]}</td>`
i++
}
output += '</tr>\n'
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}
output += '\t</tbody>\n'
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output += '</table>'
return output
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}
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helper.createChannel = function (data) {
return new Channel(data)
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}
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helper.writeToLog = function (country, msg, url) {
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var now = new Date()
var line = `${country}: ${msg} '${url}'`
this.appendToFile('error.log', now.toISOString() + ' ' + line + '\n')
}
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helper.parseMessage = function (err, u) {
if (!err || !err.message) return
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const msgArr = err.message.split('\n')
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if (msgArr.length === 0) return
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const line = msgArr.find(line => {
return line.indexOf(u) === 0
})
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if (!line) return
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return line.replace(`${u}: `, '')
}
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class Playlist {
constructor(data) {
this.header = data.header
this.items = data.items
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this.changed = false
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}
getHeader() {
let parts = ['#EXTM3U']
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for (let key in this.header.attrs) {
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let value = this.header.attrs[key]
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if (value) {
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parts.push(`${key}="${value}"`)
}
}
return `${parts.join(' ')}\n`
}
}
class Channel {
constructor(data) {
this.id = data.tvg.id
this.name = data.tvg.name
this.language = data.tvg.language
.split(';')
.filter(l => !!helper.getISO6391Code(l))
.join(';')
this.logo = data.tvg.logo
this.group = this._filterGroup(data.group.title)
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this.url = data.url
this.title = data.name.trim()
this.userAgent = data.http['user-agent']
this.referrer = data.http['referrer']
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}
_filterGroup(groupTitle) {
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if (!groupTitle) return ''
const supportedCategories = [
'Auto',
'Business',
'Classic',
'Comedy',
'Documentary',
'Education',
'Entertainment',
'Family',
'Fashion',
'Food',
'General',
'Health',
'History',
'Hobby',
'Kids',
'Legislative',
'Lifestyle',
'Local',
'Movies',
'Music',
'News',
'Quiz',
'Religious',
'Sci-Fi',
'Shop',
'Sport',
'Travel',
'Weather',
'XXX'
]
const groupIndex = supportedCategories
.map(g => g.toLowerCase())
.indexOf(groupTitle.toLowerCase())
if (groupIndex === -1) {
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groupTitle = ''
} else {
groupTitle = supportedCategories[groupIndex]
}
return groupTitle
}
toString() {
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const country = this.countryCode.toUpperCase()
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const epg = this.id && this.epg ? this.epg : ''
let info = `-1 tvg-id="${this.id}" tvg-name="${this.name}" tvg-language="${this.language}" tvg-logo="${this.logo}" tvg-country="${country}" tvg-url="${epg}" group-title="${this.group}",${this.title}`
if (this.referrer) {
info += `\n#EXTVLCOPT:http-referrer=${this.referrer}`
}
if (this.userAgent) {
info += `\n#EXTVLCOPT:http-user-agent=${this.userAgent}`
}
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return '#EXTINF:' + info + '\n' + this.url + '\n'
}
toShortString() {
let info = `-1 tvg-id="${this.id}" tvg-name="${this.name}" tvg-language="${this.language}" tvg-logo="${this.logo}" group-title="${this.group}",${this.title}`
if (this.referrer) {
info += `\n#EXTVLCOPT:http-referrer=${this.referrer}`
}
if (this.userAgent) {
info += `\n#EXTVLCOPT:http-user-agent=${this.userAgent}`
}
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return '#EXTINF:' + info + '\n' + this.url + '\n'
}
}
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module.exports = helper