update 29

lib/updater.js

@@ -0,0 +1,82 @@
+const https = require('https');
+const fs = require('fs');
+const path = require('path');
+
+// endpoint to github API
+const options = {
+    hostname: 'api.github.com',
+    path: '/repos/yt-dlp/yt-dlp/releases/latest',
+    headers: {
+        'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0'
+    },
+    method: 'GET',
+    port: 443,
+}
+
+// build the binary url based on the release tag
+function buildDonwloadOptions(release) {
+    return {
+        hostname: 'github.com',
+        path: `/yt-dlp/yt-dlp/releases/download/${release}/yt-dlp`,
+        headers: {
+            'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0'
+        },
+        method: 'GET',
+        port: 443,
+    }
+}
+
+// main
+async function update() {
+    // ensure that the binary has been removed
+    try {
+        fs.rmSync(path.join(__dirname, 'yt-dlp'))
+    }
+    catch (e) {
+        console.log('file not found!')
+    }
+    // body buffer
+    let chunks = []
+    https.get(options, res => {
+        // push the http packets chunks into the buffer
+        res.on('data', chunk => {
+            chunks.push(chunk)
+        });
+        // the connection has ended so build the body from the buffer
+        // parse it as a JSON and get the tag_name
+        res.on('end', () => {
+            const buffer = Buffer.concat(chunks)
+            const release = JSON.parse(buffer.toString())['tag_name']
+            console.log('The latest release is:', release)
+            // invoke the binary downloader
+            downloadBinary(buildDonwloadOptions(release))
+        })
+    })
+}
+
+function downloadBinary(url) {
+    https.get(url, res => {
+        // if it is a redirect follow the url
+        if (res.statusCode === 301 || res.statusCode === 302) {
+            return downloadBinary(res.headers.location)
+        }
+        let bin = fs.createWriteStream(path.join(__dirname, 'yt-dlp'))
+        res.pipe(bin)
+        // once the connection has ended make the file executable
+        res.on('end', () => {
+            fs.chmod(path.join(__dirname, 'yt-dlp'), 0o775, err => {
+                err ? console.error('failed updating!') : console.log('done!')
+            })
+        })
+    })
+}
+
+function updateFromFrontend(socket) {
+    update().then(() => {
+        socket.emit('updated')
+    })
+}
+
+module.exports = {
+    ytdlpUpdater: updateFromFrontend
+}