Migrated from SixLabors to Magick.NET

GifResizer/Models/Gif.cs

@@ -1,49 +1,58 @@
 using System.IO;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.Processing;
+using ImageMagick;
 
 namespace GifResizer.Models;
 
 public class Gif : IDisposable
 {
-
     private readonly string _path;
-    private Image? _image;
+    private MagickImageCollection? _images;
     
     public Gif(string path)
     {
         ArgumentNullException.ThrowIfNull(path);
-        if (path.Length == 0 || path.IsWhiteSpace() || !File.Exists(path)) 
+        if (string.IsNullOrWhiteSpace(path) || !File.Exists(path)) 
             throw new ArgumentException($"File '{path}' does not exist");
         _path = path;
     }
 
     public void Load()
     {
-        _image = Image.Load(_path);
+        _images?.Dispose();
+        _images = new MagickImageCollection(_path);
+        _images.Coalesce();
     }
     
     public void Resize(int width, int height)
     {
-        if(_image == null) throw new InvalidOperationException("Image hasn't been loaded yet");
-        if(width <= 0 || height <= 0) throw new InvalidOperationException("Please specify a valid width or height.");
-        if(width == _image.Width && height == _image.Height) return;
-        _image.Mutate(x => x.Resize(width, height));
+        if (_images == null) 
+            throw new InvalidOperationException("Image hasn't been loaded yet");
+        if (width <= 0 || height <= 0) 
+            throw new InvalidOperationException("Please specify a valid width or height.");
+    
+        foreach (var image in _images)
+        {
+            if (image.Width == width && image.Height == height) continue;
+            image.Resize((uint)width, (uint)height);
+        }
     }
 
     public void Save(string outputPath)
     {
-        if(_image == null) throw new InvalidOperationException("Image hasn't been loaded yet");
+        if (_images == null) 
+            throw new InvalidOperationException("Image hasn't been loaded yet");
+        
         var directory = Path.GetDirectoryName(outputPath);
         if (!string.IsNullOrEmpty(directory))
         {
             Directory.CreateDirectory(directory);
         }
-        _image.Save(Path.Combine(outputPath));
+        
+        _images.Write(outputPath);
     }
 
     public void Dispose()
     {
-        _image?.Dispose();
+        _images?.Dispose();
     }
 }