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Moved major functions to separate class #1

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merged 2 commits into from
May 14, 2024
Merged

Moved major functions to separate class #1

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37d34c4
Moved major functions to separate class
CharleeBrown May 13, 2024
e6224b8
Fixed implementation of ClearInfo function
CharleeBrown May 13, 2024
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108 changes: 6 additions & 102 deletions Form1.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,117 +3,22 @@
using YoutubeExplode;
using YoutubeExplode.Videos.Streams;


namespace YoutubeToMP3
{
public partial class Form1 : Form
{
Downloads download = new Downloads();
public Form1()
{
InitializeComponent();
progressBar.Value = 0;

}

private async void downloadButton_ClickAsync(object sender, EventArgs e)
{
progressBar.Value = 0;

// Check if the URL TextBox is empty or null
if (string.IsNullOrWhiteSpace(urlBox.Text))
{
MessageBox.Show("Please enter a YouTube URL.", "Input Required", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// Validate if the URL is a YouTube URL
try
{
var uri = new Uri(urlBox.Text);
var host = uri.Host.ToLower();
if (!host.Contains("youtube.com") && !host.Contains("youtu.be"))
{
MessageBox.Show("Please enter a valid YouTube URL.", "Invalid URL", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
catch (Exception)
{
MessageBox.Show("Please enter a valid YouTube URL.", "Invalid URL", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// Initialize YoutubeExplode client and fetch video metadata
var youtube = new YoutubeClient();
var videoId = YoutubeExplode.Videos.VideoId.Parse(urlBox.Text);
var video = await youtube.Videos.GetAsync(videoId);
var videoTitle = video.Title;

// Sanitize the video title to be a valid filename
var invalidChars = Path.GetInvalidFileNameChars();
var safeFileName = string.Join("_", videoTitle.Split(invalidChars, StringSplitOptions.RemoveEmptyEntries)).Trim();

// Use SaveFileDialog to ask the user where to save the MP3 file
using (var saveFileDialog = new SaveFileDialog())
{
saveFileDialog.Filter = "MP3 Files|*.mp3";
saveFileDialog.Title = "Save MP3 File";
saveFileDialog.FileName = safeFileName; // Suggest a filename

if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
// Process the URL and download the video
try
{
// Get the stream manifest and select the best muxed stream (audio + video)
var streamManifest = await youtube.Videos.Streams.GetManifestAsync(videoId);
var streamInfo = streamManifest.GetMuxedStreams().GetWithHighestVideoQuality();

// Temporarily download the video
var videoPath = Path.Combine(Path.GetTempPath(), $"{videoId}.mp4");

// Initialize the progress bar
progressBar.Value = 0;
progressBar.Maximum = 100;

// Create an instance of IProgress<double> to report progress
var progressHandler = new Progress<double>(progress =>
{
// Update progress bar on the UI thread
Invoke((MethodInvoker)delegate
{
progressBar.Value = (int)(progress * 100);
});
});

// Download the video with progress reporting
await youtube.Videos.Streams.DownloadAsync(streamInfo, videoPath, progressHandler);

// Convert to MP3 using MediaToolkit
var inputFile = new MediaFile { Filename = videoPath };
var outputFile = new MediaFile { Filename = saveFileDialog.FileName };

using (var engine = new Engine())
{
engine.GetMetadata(inputFile);
engine.Convert(inputFile, outputFile);
}

// Clean up the temporary video file
File.Delete(videoPath);

// Update UI and show completion message
MessageBox.Show("Download complete!", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
urlBox.Text = string.Empty;
progressBar.Value = 0; // Reset progress bar after completion

}
catch (Exception ex)
{
MessageBox.Show($"An error occurred: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
progressBar.Value = 0; // Reset progress bar in case of error
}
}
}




download.DownloadAsync(urlBox.Text, progressBar);
}

private void helpToolStripMenuItem_Click(object sender, EventArgs e)
Expand All @@ -123,8 +28,7 @@ private void helpToolStripMenuItem_Click(object sender, EventArgs e)

private void clearButton_Click(object sender, EventArgs e)
{
urlBox.Clear();
progressBar.Value = 0;
download.ClearInfo(urlBox, progressBar);
}

private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
Expand Down
112 changes: 112 additions & 0 deletions downloadAsync.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,112 @@
using MediaToolkit.Model;
using MediaToolkit;
using YoutubeExplode;
using YoutubeExplode.Videos.Streams;

//urlBox.Text
namespace YoutubeToMP3{
public class Downloads{
public async void DownloadAsync(String url, ProgressBar progress) {

// Check if the URL TextBox is empty or null
if (string.IsNullOrWhiteSpace(url))
{
MessageBox.Show("Please enter a YouTube URL.", "Input Required", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// Validate if the URL is a YouTube URL
try
{
var uri = new Uri(url);
var host = uri.Host.ToLower();
if (!host.Contains("youtube.com") && !host.Contains("youtu.be"))
{
MessageBox.Show("Please enter a valid YouTube URL.", "Invalid URL", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
catch (Exception)
{
MessageBox.Show("Please enter a valid YouTube URL.", "Invalid URL", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// Initialize YoutubeExplode client and fetch video metadata
var youtube = new YoutubeClient();
var videoId = YoutubeExplode.Videos.VideoId.Parse(url);
var video = await youtube.Videos.GetAsync(videoId);
var videoTitle = video.Title;

// Sanitize the video title to be a valid filename
var invalidChars = Path.GetInvalidFileNameChars();
var safeFileName = string.Join("_", videoTitle.Split(invalidChars, StringSplitOptions.RemoveEmptyEntries)).Trim();

// Use SaveFileDialog to ask the user where to save the MP3 file
using (var saveFileDialog = new SaveFileDialog())
{
saveFileDialog.Filter = "MP3 Files|*.mp3";
saveFileDialog.Title = "Save MP3 File";
saveFileDialog.FileName = safeFileName; // Suggest a filename

if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
// Process the URL and download the video
try
{
// Get the stream manifest and select the best muxed stream (audio + video)
var streamManifest = await youtube.Videos.Streams.GetManifestAsync(videoId);
var streamInfo = streamManifest.GetMuxedStreams().GetWithHighestVideoQuality();

// Temporarily download the video
var videoPath = Path.Combine(Path.GetTempPath(), $"{videoId}.mp4");

// Initialize the progress bar
progress.Value = 0;
progress.Maximum = 100;

// Create an instance of IProgress<double> to report progress
var progressHandler = new Progress<double>(val =>
{

progress.Value = (int)(val * 100);

});

// Download the video with progress reporting
await youtube.Videos.Streams.DownloadAsync(streamInfo, videoPath, progressHandler);

// Convert to MP3 using MediaToolkit
var inputFile = new MediaFile { Filename = videoPath };
var outputFile = new MediaFile { Filename = saveFileDialog.FileName };

using (var engine = new Engine())
{
engine.GetMetadata(inputFile);
engine.Convert(inputFile, outputFile);
}

// Clean up the temporary video file
File.Delete(videoPath);

// Update UI and show completion message
MessageBox.Show("Download complete!", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
url = string.Empty;
progress.Value = 0; // Reset progress bar after completion

}
catch (Exception ex)
{
MessageBox.Show($"An error occurred: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
progress.Value = 0; // Reset progress bar in case of error
}
}
}


}

public void ClearInfo(TextBox urlInput, ProgressBar progress)
{
urlInput.Clear();
progress.Value = 0;
}
}}