feat: remove outside dependency for image resize

pkg/app/blob_routes.go

@@ -12,6 +12,7 @@ import (
 	"path/filepath"
 
 	_ "golang.org/x/image/webp"
+	"golang.org/x/image/draw"
 
 	"github.com/Damillora/Shioriko/pkg/config"
 	"github.com/Damillora/Shioriko/pkg/database"
@@ -19,7 +20,6 @@ import (
 	"github.com/Damillora/Shioriko/pkg/models"
 	"github.com/Damillora/Shioriko/pkg/services"
 	"github.com/corona10/goimagehash"
-	"github.com/disintegration/imaging"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 )
@@ -129,23 +129,25 @@ func uploadBlob(c *gin.Context) {
 		return
 	}
    
-	previewImage := imaging.Resize(originalImage, 1000, 0, imaging.Lanczos)
+	// Resize logic
-	if err != nil {
+	previewWidth := 1000;
-		c.JSON(http.StatusBadRequest, models.ErrorResponse{
+    previewFactor := float32(previewWidth) / float32(width)
-			Code:    http.StatusBadRequest,
+	previewHeight := int(float32(height) * previewFactor)
-			Message: err.Error(),
+	if width <= previewWidth {
-		})
+	  previewHeight = height
-		return
+	}
+	thumbnailWidth := 300;
+    thumbnailFactor := float32(thumbnailWidth) / float32(width)
+	thumbnailHeight := int(float32(height) * thumbnailFactor)
+	if width <= thumbnailWidth {
+	  thumbnailHeight = height
 	}
 
-	thumbnailImage := imaging.Resize(originalImage, 300, 0, imaging.Lanczos)
+	previewImage := image.NewRGBA(image.Rect(0, 0, previewWidth, previewHeight))
-	if err != nil {
+	draw.BiLinear.Scale(previewImage, previewImage.Rect, originalImage, originalImage.Bounds(), draw.Over, nil)
-		c.JSON(http.StatusBadRequest, models.ErrorResponse{
+
-			Code:    http.StatusBadRequest,
+	thumbnailImage := image.NewRGBA(image.Rect(0, 0, thumbnailWidth, thumbnailHeight))
-			Message: err.Error(),
+	draw.BiLinear.Scale(thumbnailImage, thumbnailImage.Rect, originalImage, originalImage.Bounds(), draw.Over, nil)
-		})
-		return
-	}
 
 	previewFile, err := os.Create(previewFilePath)
 	if err != nil {