Barcode generation with Boombuler

internal/pkg/qrcode/generator.go

@@ -0,0 +1,32 @@
+package qrcode
+
+import (
+	"bytes"
+	"image/png"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/qr"
+)
+
+func GeneratePNG(content string, size int) ([]byte, error) {
+	if size <= 0 {
+		size = 256
+	}
+
+	qrCode, err := qr.Encode(content, qr.M, qr.Auto)
+	if err != nil {
+		return nil, err
+	}
+
+	qrCode, err = barcode.Scale(qrCode, size, size)
+	if err != nil {
+		return nil, err
+	}
+
+	var buf bytes.Buffer
+	if err := png.Encode(&buf, qrCode); err != nil {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}