88 lines
2.3 KiB
Dart
88 lines
2.3 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:dart_console/dart_console.dart';
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import 'package:youtube_explode_dart/youtube_explode_dart.dart';
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// Initialize the YoutubeExplode instance.
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final yt = YoutubeExplode();
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final console = Console();
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Future<void> main() async {
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console.writeLine('Type the video id or url: ');
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var url = stdin.readLineSync().trim();
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// Get the video url.
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var id = YoutubeExplode.parseVideoId(url);
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if (id == null) {
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console.writeLine('Invalid video id or url.');
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exit(1);
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}
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// Save the video to the download directory.
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Directory('downloads').createSync();
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console.hideCursor();
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// Download the video.
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await download(id);
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yt.close();
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console.showCursor();
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exit(0);
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}
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Future<void> download(String id) async {
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// Get the video media stream.
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var mediaStream = await yt.getVideoMediaStream(id);
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// Get the last audio track (the one with the highest bitrate).
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var audio = mediaStream.audio.last;
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// Compose the file name removing the unallowed characters in windows.
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var fileName =
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'${mediaStream.videoDetails.title}.${audio.container.toString()}'
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.replaceAll('Container.', '')
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.replaceAll(r'\', '')
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.replaceAll('/', '')
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.replaceAll('*', '')
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.replaceAll('?', '')
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.replaceAll('"', '')
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.replaceAll('<', '')
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.replaceAll('>', '')
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.replaceAll('|', '');
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var file = File('downloads/$fileName');
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// Create the StreamedRequest to track the download status.
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// Open the file in appendMode.
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var output = file.openWrite(mode: FileMode.writeOnlyAppend);
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// Track the file download status.
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var len = audio.size;
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var count = 0;
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var oldProgress = -1;
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// Create the message and set the cursor position.
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var msg = 'Downloading `${mediaStream.videoDetails.title}`: \n';
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var row = console.cursorPosition.row;
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var col = msg.length - 2;
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console.cursorPosition = Coordinate(row, 0);
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console.write(msg);
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// Listen for data received.
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await for (var data in audio.downloadStream()) {
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count += data.length;
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var progress = ((count / len) * 100).round();
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if (progress != oldProgress) {
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console.cursorPosition = Coordinate(row, col);
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console.write('$progress%');
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oldProgress = progress;
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}
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output.add(data);
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}
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console.writeLine();
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await output.close();
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}
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