Thumbnail feature.

APIControllers/PictureUpload.cs

@@ -1,6 +1,6 @@
 using Microsoft.AspNetCore.Mvc;
 using NeDvachAPI.DBControllers;
-
+using SkiaSharp;
 
 namespace NeDvachAPI.Controllers
 {
@@ -13,19 +13,46 @@ namespace NeDvachAPI.Controllers
         [HttpPost(Name = "UploadPicture")]
         public async Task<JsonResult> ReceivePost([FromForm] IFormFile PostPicture)
         {
-            var supportedTypes = new[] { "jpg", "png" };
+            var supportedTypes = new[] { ".jpg", ".png", ".jpeg" };
             string receivedFileName = PostPicture.FileName;
-            string fileExt = receivedFileName.Substring((receivedFileName.Length) - 3, 3);
-            if (supportedTypes.Contains(fileExt.ToLower()))  //file type check
+            string fName = Path.GetFileNameWithoutExtension(receivedFileName);
+            string fExtention = Path.GetExtension(receivedFileName);
+            string previevFileName = fName + 's' + fExtention;
+
+            Console.WriteLine("Расширение файла: " + fExtention);
+
+            if (supportedTypes.Contains(fExtention.ToLower()))  //file type check
             {
                 ///Local Buffer File Part
                 string filePath;
+                string previevPath;
                 filePath = Directory.GetCurrentDirectory() + "\\Buffer\\" + receivedFileName;
+                previevPath = Directory.GetCurrentDirectory() + "\\Buffer\\" + previevFileName;
                 Stream picBuffer = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
                 PostPicture.CopyTo(picBuffer);
                 picBuffer.Close();
+                ///resize part
+
+                bool resizeImage(string picPath, string smallPath, int width, int height)
+                {
+                    var dstInfo = new SKImageInfo(height, width);
+                    var bitmap = SKBitmap.Decode(picPath);
+
+                    var image = SKImage.FromBitmap(bitmap.Resize(dstInfo, SKFilterQuality.Medium));
+                    var data = image.Encode(SKEncodedImageFormat.Jpeg, 90);
+
+                    using (var stream = new FileStream(smallPath, FileMode.Create, FileAccess.Write))
+                        data.SaveTo(stream);
+
+                    data.Dispose();
+                    image.Dispose();
+                    bitmap.Dispose();
+                    return true;
+                }
+                resizeImage(filePath, previevPath, 300, 400);
                 ///MinIo part
-                JsonResult picAdress = new(await MinIOchat.PictureUpload(filePath, receivedFileName));
+                await MinIOchat.PictureUpload(previevPath, receivedFileName, "thread-pics-small");
+                JsonResult picAdress = new(await MinIOchat.PictureUpload(filePath, receivedFileName, "thread-pics"));
                 Console.WriteLine("Загружен файл:" + "http://static.vdk2ch.ru:15555/thread-pics/" + receivedFileName);
                 return picAdress;
             }