From 9b1f58d7832de45a8ab7e2390c536d804401f90e Mon Sep 17 00:00:00 2001
From: ahmadafriadi <ahmadafriadi0@gmail.com>
Date: Fri, 27 Jun 2025 13:34:54 +0700
Subject: [PATCH] Update Auto Generate SKU

---
 modules/auth/service/jwt.go                   |  2 +-
 modules/inventory/handler/product_handler.go  | 15 ++++++++++++
 modules/inventory/models/colour.go            |  2 +-
 modules/inventory/repository/product__repo.go | 23 +++++++++++++++++++
 modules/inventory/service/inventory_logic.go  | 22 ++++++++++++++++++
 5 files changed, 62 insertions(+), 2 deletions(-)
 create mode 100644 modules/inventory/service/inventory_logic.go

diff --git a/modules/auth/service/jwt.go b/modules/auth/service/jwt.go
index 3c75278..3cb74fc 100644
--- a/modules/auth/service/jwt.go
+++ b/modules/auth/service/jwt.go
@@ -11,7 +11,7 @@ func GenerateJWT(userID uint, role string) (string, error) {
 	claims := jwt.MapClaims{
 		"user_id": userID,
 		"role":    role,
-		"exp":     time.Now().Add(time.Hour * 1).Unix(), // expired dalam 1 jam
+		"exp":     time.Now().Add(time.Hour * 24).Unix(), // expired dalam 1 jam
 	}
 
 	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
diff --git a/modules/inventory/handler/product_handler.go b/modules/inventory/handler/product_handler.go
index 5037cbb..400af3b 100644
--- a/modules/inventory/handler/product_handler.go
+++ b/modules/inventory/handler/product_handler.go
@@ -4,6 +4,7 @@ import (
 	"BE-MiniERP/database"
 	"BE-MiniERP/modules/inventory/models"
 	"BE-MiniERP/modules/inventory/repository"
+	"BE-MiniERP/modules/inventory/service"
 	"strconv"
 
 	"github.com/gofiber/fiber/v2"
@@ -32,9 +33,23 @@ func (h *ProductHandler) Create(c *fiber.Ctx) error {
 	if err := c.BodyParser(&input); err != nil {
 		return c.Status(400).JSON(fiber.Map{"error": "Invalid input"})
 	}
+
+	// Jika hanya terima ID, lakukan preload relasi
+	if err := h.Repo.PreloadRelations(&input); err != nil {
+		return c.Status(400).JSON(fiber.Map{"error": "Failed to preload relations"})
+	}
+
+	// Generate SKU
+	sku, err := service.GenerateSKU(&input)
+	if err != nil {
+		return c.Status(400).JSON(fiber.Map{"error": "Failed to generate SKU: " + err.Error()})
+	}
+	input.SKU = sku
+
 	if err := h.Repo.Create(&input); err != nil {
 		return c.Status(500).JSON(fiber.Map{"error": "Failed to create product"})
 	}
+
 	return c.JSON(input)
 }
 
diff --git a/modules/inventory/models/colour.go b/modules/inventory/models/colour.go
index bc9e79f..f58e295 100644
--- a/modules/inventory/models/colour.go
+++ b/modules/inventory/models/colour.go
@@ -4,7 +4,7 @@ import "time"
 
 type Colour struct {
 	ID        uint   `gorm:"primaryKey" json:"id"`
-	Code      string `json:"code"`
+	Code      string `gorm:"not null;unique" json:"code"`
 	Name      string `gorm:"not null" json:"name"`
 	Hex       string `json:"hex"` // Hexadecimal color code
 	CreatedAt time.Time
diff --git a/modules/inventory/repository/product__repo.go b/modules/inventory/repository/product__repo.go
index 370d41b..85fb3e1 100644
--- a/modules/inventory/repository/product__repo.go
+++ b/modules/inventory/repository/product__repo.go
@@ -3,6 +3,8 @@ package repository
 import (
 	"BE-MiniERP/modules/inventory/models"
 
+	"fmt"
+
 	"gorm.io/gorm"
 )
 
@@ -36,3 +38,24 @@ func (r *ProductRepository) Update(id uint, product *models.Product) error {
 func (r *ProductRepository) Delete(id uint) error {
 	return r.DB.Delete(&models.Product{}, id).Error
 }
+
+func (r *ProductRepository) PreloadRelations(product *models.Product) error {
+	// Collection
+	if err := r.DB.First(&product.Collection, product.CollectionID).Error; err != nil {
+		return fmt.Errorf("collection not found: %w", err)
+	}
+	// Category
+	if err := r.DB.First(&product.Category, product.CategoryID).Error; err != nil {
+		return fmt.Errorf("category not found: %w", err)
+	}
+	// Colour
+	if err := r.DB.First(&product.Colour, product.ColourID).Error; err != nil {
+		return fmt.Errorf("colour not found: %w", err)
+	}
+	// Size
+	if err := r.DB.First(&product.Size, product.SizeID).Error; err != nil {
+		return fmt.Errorf("size not found: %w", err)
+	}
+
+	return nil
+}
diff --git a/modules/inventory/service/inventory_logic.go b/modules/inventory/service/inventory_logic.go
new file mode 100644
index 0000000..f859367
--- /dev/null
+++ b/modules/inventory/service/inventory_logic.go
@@ -0,0 +1,22 @@
+package service
+
+import (
+	"BE-MiniERP/modules/inventory/models"
+	"fmt"
+)
+
+func GenerateSKU(product *models.Product) (string, error) {
+	if product.Collection.Code == "" ||
+		product.Category.Code == "" ||
+		product.Colour.Code == "" ||
+		product.Size.Code == "" {
+		return "", fmt.Errorf("missing code from one or more components")
+	}
+
+	return fmt.Sprintf("%s-%s-%s-%s",
+		product.Collection.Code,
+		product.Category.Code,
+		product.Colour.Code,
+		product.Size.Code,
+	), nil
+}