add media service

internal/infrastructure/images/processor.go

@@ -0,0 +1,50 @@
+package images
+
+import (
+	"bytes"
+	"image"
+	"image/jpeg"
+	_ "image/png"
+
+	"github.com/disintegration/imaging"
+)
+
+type Processor interface {
+	Process(input []byte, mode string) ([]byte, string, error)
+}
+
+type ImageProcessor struct{}
+
+func NewImageProcessor() *ImageProcessor {
+	return &ImageProcessor{}
+}
+
+func (p *ImageProcessor) Process(fileBytes []byte, mode string) ([]byte, string, error) {
+	if mode == "raw" {
+		return fileBytes, "application/octet-stream", nil
+	}
+
+	img, _, err := image.Decode(bytes.NewReader(fileBytes))
+	if err != nil {
+		// Если это не картинка (например, документ или видео), просто возвращаем исходные байты
+		return fileBytes, "application/octet-stream", nil
+	}
+
+	var processedImg image.Image
+	switch mode {
+	case "avatar":
+		processedImg = imaging.Fill(img, 500, 500, imaging.Center, imaging.Lanczos)
+	case "chat":
+		processedImg = imaging.Fit(img, 1280, 1280, imaging.Lanczos)
+	default:
+		processedImg = img
+	}
+
+	buf := new(bytes.Buffer)
+	err = jpeg.Encode(buf, processedImg, &jpeg.Options{Quality: 80})
+	if err != nil {
+		return nil, "", err
+	}
+
+	return buf.Bytes(), "image/jpeg", nil
+}