From 3c794d6eb76e853cbe39b4d4b194a04f124f9541 Mon Sep 17 00:00:00 2001
From: Aleksandr Statciuk <free.arhey@gmail.com>
Date: Tue, 13 Jul 2021 18:14:49 +0300
Subject: [PATCH] Create filter.js

---
 scripts/filter.js | 63 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 scripts/filter.js

diff --git a/scripts/filter.js b/scripts/filter.js
new file mode 100644
index 0000000000..ff08aa1ade
--- /dev/null
+++ b/scripts/filter.js
@@ -0,0 +1,63 @@
+const parser = require('./parser')
+const utils = require('./utils')
+const blacklist = require('./blacklist.json')
+
+let globalBuffer = []
+
+async function main() {
+  const playlists = parseIndex()
+  for (const playlist of playlists) {
+    await loadPlaylist(playlist.url).then(removeBlacklisted).then(savePlaylist).then(done)
+  }
+
+  finish()
+}
+
+function parseIndex() {
+  console.info(`Parsing 'index.m3u'...`)
+  let playlists = parser.parseIndex()
+  console.info(`Found ${playlists.length} playlist(s)\n`)
+
+  return playlists
+}
+
+async function loadPlaylist(url) {
+  console.info(`Processing '${url}'...`)
+  return parser.parsePlaylist(url)
+}
+
+async function removeBlacklisted(playlist) {
+  console.info(`  Looking for blacklisted channels...`)
+  const list = blacklist.map(i => i.toLowerCase())
+  playlist.channels = playlist.channels.filter(i => {
+    return !list.includes(i.name.toLowerCase())
+  })
+
+  return playlist
+}
+
+async function savePlaylist(playlist) {
+  console.info(`  Saving playlist...`)
+  const original = utils.readFile(playlist.url)
+  const output = playlist.toString({ raw: true })
+
+  if (original === output) {
+    console.info(`No changes have been made.`)
+    return false
+  } else {
+    utils.createFile(playlist.url, output)
+    console.info(`Playlist has been updated.`)
+  }
+
+  return true
+}
+
+async function done() {
+  console.info(` `)
+}
+
+function finish() {
+  console.info('Done.')
+}
+
+main()