Create CatboxUploader.cs

CatboxUploader.cs

@@ -0,0 +1,29 @@
+using System;
+using System.IO;
+using System.Net.Http;
+
+public class CatboxUploader
+{
+    // NOTE - You can also return Task<string> instead of void and remove the callback to just await this method
+    public static async void UploadToCatbox(string filePath, Action<string> callback)
+    {
+        using var client = new HttpClient();
+        client.BaseAddress = new Uri("https://catbox.moe/user/api.php");
+
+        using var content = new MultipartFormDataContent();
+
+        content.Add(new StringContent("fileupload"), "reqtype");
+        content.Add(new StreamContent(File.OpenRead(filePath)), "fileToUpload", Path.GetFileName(filePath));
+
+        var response = await client.PostAsync("", content);
+        if (response.IsSuccessStatusCode)
+        {
+            var url = await response.Content.ReadAsStringAsync();
+            callback(url);
+        }
+        else
+        {
+            // Handle your failed requests here
+        }
+    }
+}