feat(handlers): Implement barcode generation

handlers/barcode.go

@@ -5,6 +5,7 @@ import (
 )
 
 // GenerateBarcode godoc
+//
 //	@Summary		Generate barcodes
 //	@Description	Generate barcodes based on the provided data
 //	@Tags			barcodes
@@ -13,6 +14,19 @@ import (
 //	@Produce		image/png
 //	@Router			/v1/barcodes/{type}/{content} [get]
 func (h *DefaultHandler) GenerateBarcode(c *fiber.Ctx) error {
-	c.Set(fiber.HeaderContentType, "text/plain")
-	return c.Send([]byte("Hello, World!"))
+
+	// Get the type and content from the URL
+	barcodeType := c.Params("type")
+	barcodeContent := c.Params("content")
+
+	// Generate the barcode
+	barcode, err := h.BarcodeService.GenerateBarcode(barcodeType, barcodeContent, 1000, 1000)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+			"error": err.Error(),
+		})
+	}
+
+	c.Set(fiber.HeaderContentType, "image/png")
+	return c.Send(barcode.Bytes())
 }

handlers/handlers.go

@@ -2,6 +2,7 @@ package handlers
 
 import (
 	"git.odit.services/lfk/document-server/models"
+	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -9,8 +10,10 @@ type Handler interface {
 	GenerateCard(*fiber.Ctx) error
 	GenerateContract(*fiber.Ctx) error
 	GenerateCertificate(*fiber.Ctx) error
+	GenerateBarcode(*fiber.Ctx) error
 }
 
 type DefaultHandler struct {
-	Config *models.Config
+	Config         *models.Config
+	BarcodeService services.BarcodeService
 }

main.go

@@ -8,6 +8,7 @@ import (
 	"git.odit.services/lfk/document-server/docs" // Correct import path for docs
 	"git.odit.services/lfk/document-server/handlers"
 	"git.odit.services/lfk/document-server/models"
+	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/keyauth"
 	"github.com/gofiber/swagger"
@@ -55,16 +56,16 @@ func loadEnv() error {
 	return nil
 }
 
-//	@title						LfK Document Server API
-//	@description				This is the API documentation for the LfK Document Server - a tool for pdf generation.
-//	@license.name				CC BY-NC-SA 4.0
-//	@termsOfService				https://lauf-fuer-kaya.de/datenschutz
-//	@contact.name				ODIT.Services UG (haftungsbeschränkt)
-//	@contact.url				https://odit.services
-//	@contact.email				info@odit.services
-//	@securityDefinitions.apiKey	ApiKeyAuth
-//	@in							query
-//	@name						key
+// @title						LfK Document Server API
+// @description				This is the API documentation for the LfK Document Server - a tool for pdf generation.
+// @license.name				CC BY-NC-SA 4.0
+// @termsOfService				https://lauf-fuer-kaya.de/datenschutz
+// @contact.name				ODIT.Services UG (haftungsbeschränkt)
+// @contact.url				https://odit.services
+// @contact.email				info@odit.services
+// @securityDefinitions.apiKey	ApiKeyAuth
+// @in							query
+// @name						key
 func main() {
 
 	err := loadEnv()
@@ -72,8 +73,10 @@ func main() {
 		log.Fatal(err)
 	}
 
+	barcodeGenerator := &services.DefaultBarcodeService{}
 	handler := handlers.DefaultHandler{
-		Config: config,
+		Config:         config,
+		BarcodeService: barcodeGenerator,
 	}
 
 	// Create a new Fiber instance

services/barcode.go

@@ -12,15 +12,15 @@ import (
 	"github.com/boombuler/barcode/qr"
 )
 
-type BarcodeGenerator interface {
-	GenerateBarcode(format string, content string) (bytes.Buffer, error)
+type BarcodeService interface {
+	GenerateBarcode(format string, content string, width int, height int) (bytes.Buffer, error)
 	IsTypeSupported(format string) bool
 }
 
-type DefaultBarcodeGenerator struct {
+type DefaultBarcodeService struct {
 }
 
-func (b *DefaultBarcodeGenerator) GenerateBarcode(format string, content string, width int, height int) (bytes.Buffer, error) {
+func (b *DefaultBarcodeService) GenerateBarcode(format string, content string, width int, height int) (bytes.Buffer, error) {
 	if !b.IsTypeSupported(format) {
 		return bytes.Buffer{}, fmt.Errorf("unsupported barcode type: %s", format)
 	}
@@ -63,7 +63,7 @@ func (b *DefaultBarcodeGenerator) GenerateBarcode(format string, content string,
 	return buf, nil
 }
 
-func (b *DefaultBarcodeGenerator) IsTypeSupported(format string) bool {
+func (b *DefaultBarcodeService) IsTypeSupported(format string) bool {
 	supportedTypes := []string{"ean13", "code128", "qr"}
 	return slices.Contains(supportedTypes, format)
 }

services/templater.go

@@ -31,7 +31,7 @@ func idToEan13(id string, prefix string) (string, error) {
 }
 
 func (t *DefaultTemplater) GenerateBarcode(code string, format string, prefix string) (string, error) {
-	gen := &DefaultBarcodeGenerator{}
+	gen := &DefaultBarcodeService{}
 	var err error
 
 	if format == "ean13" {