Backend: added 'CompressImage' function.

backend/.gitignore

@@ -1 +1,2 @@
-config.json
+config.json
+.temp/**

backend/core/img.go

@@ -0,0 +1,46 @@
+package core
+
+import (
+	"backend/util"
+	"image"
+	"image/jpeg"
+	"os"
+	"path/filepath"
+
+	"github.com/disintegration/imaging"
+)
+
+func CompressImage(path string) {
+	// Creating folder + output file
+	if err := os.MkdirAll(filepath.Dir(".temp"), 0755); err != nil {
+		util.Logformatrn(util.ERROR, "Failed to create temp directory (%v)", err)
+		return
+	}
+	outputFile, err := os.Create(".temp/test.jpeg")
+	if err != nil {
+		util.Logformatrn(util.ERROR, "Failed to create file: %v", err)
+	}
+	defer outputFile.Close()
+
+	// Opening image + Reducing its size and quality
+	img, err := imaging.Open(path)
+	if err != nil {
+		util.Logformatrn(util.ERROR, "Failed to open image: %v", err)
+	}
+	width := float64(img.Bounds().Dx())
+	height := float64(img.Bounds().Dy())
+	ratio := float64(0)
+	var imgOutput *image.NRGBA
+	if width < height {
+		ratio = height / width
+		imgOutput = imaging.Resize(img, 283, int(283*ratio), imaging.Lanczos)
+	} else {
+		ratio = width / height
+		imgOutput = imaging.Resize(img, int(283*ratio), 283, imaging.Lanczos)
+	}
+
+	// Encoding to jpeg afterwards
+	if err := jpeg.Encode(outputFile, imgOutput, &jpeg.Options{Quality: 30}); err != nil {
+		util.Logformatrn(util.ERROR, "Failed to save image: %v", err)
+	}
+}

backend/go.mod

@@ -1,3 +1,8 @@
 module backend
 
 go 1.23.6
+
+require (
+	github.com/disintegration/imaging v1.6.2 // indirect
+	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 // indirect
+)

backend/go.sum

@@ -0,0 +1,5 @@
+github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
+github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 h1:hVwzHzIUGRjiF7EcUjqNxk3NCfkPxbDKRdnNE1Rpg0U=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=