2

backend/controllers/bookingcontroller.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"s-class-backend/config"
+	"s-class-backend/helpers" // Import helper pembuat kode acak
 	"s-class-backend/models"
 	"time"
 
@@ -25,15 +26,13 @@ func CreateBooking(c *gin.Context) {
 		return
 	}
 
-	// --- PERBAIKAN DI SINI (Handle UUID) ---
+	// --- Handle UUID ---
-	// Ambil user_id dari context (hasil login)
 	userIDInterface, exists := c.Get("user_id")
 	if !exists {
 		c.JSON(http.StatusUnauthorized, gin.H{"error": "User ID tidak ditemukan"})
 		return
 	}
 
-	// Konversi interface{} ke string dulu, baru ke UUID
 	userIDStr, ok := userIDInterface.(string)
 	if !ok {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Format User ID token salah"})
@@ -45,7 +44,6 @@ func CreateBooking(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Gagal memproses User ID"})
 		return
 	}
-	// ---------------------------------------
 
 	// Validasi Waktu
 	if input.EndTime.Before(input.StartTime) {
@@ -73,9 +71,8 @@ func CreateBooking(c *gin.Context) {
 		Status:    "Pending",
 	}
 
-	// Tampilkan error asli database jika gagal
 	if err := config.DB.Create(&booking).Error; err != nil {
-		fmt.Println("Error DB:", err) // Print error ke terminal
+		fmt.Println("Error DB:", err)
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
@@ -85,23 +82,19 @@ func CreateBooking(c *gin.Context) {
 		"data":    booking,
 	})
 }
+
 func GetUserBookings(c *gin.Context) {
 	var bookings []models.Booking
 
-	// 1. Ambil User ID dan Role dari token yang sedang login
 	userID, _ := c.Get("user_id")
 	role, _ := c.Get("role")
 
-	// 2. Cek apakah dia Admin
 	if role == "admin" {
-		// Jika ADMIN: Ambil SEMUA data peminjaman dari semua user, urutkan dari yang terbaru
-		// Kita juga ambil data Room dan User agar detailnya lengkap
 		if err := config.DB.Preload("Room").Preload("User").Order("created_at desc").Find(&bookings).Error; err != nil {
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 			return
 		}
 	} else {
-		// Jika MAHASISWA: Ambil HANYA data peminjaman miliknya sendiri
 		if err := config.DB.Preload("Room").Where("user_id = ?", userID).Order("created_at desc").Find(&bookings).Error; err != nil {
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 			return
@@ -112,30 +105,38 @@ func GetUserBookings(c *gin.Context) {
 }
 
 type UpdateStatusInput struct {
-	Status string `json:"status" binding:"required"` // Isinya: 'Approved', 'Rejected', 'Completed', 'Cancelled'
+	Status string `json:"status" binding:"required"` 
 }
 
-// --- FUNGSI 3: UPDATE STATUS (ADMIN) ---
+// --- FUNGSI UPDATE STATUS (ADMIN) ---
 func UpdateBookingStatus(c *gin.Context) {
-	// 1. Ambil ID Booking dari URL (misal: /bookings/123)
 	bookingID := c.Param("id")
 
-	// 2. Cek apakah booking ada?
 	var booking models.Booking
 	if err := config.DB.First(&booking, "booking_id = ?", bookingID).Error; err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "Booking tidak ditemukan"})
 		return
 	}
 
-	// 3. Validasi Input JSON
 	var input UpdateStatusInput
 	if err := c.ShouldBindJSON(&input); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
 	}
 
-	// 4. Update Status ke Database
 	booking.Status = input.Status
+
+	// 👇 LOGIKA PEMBUATAN REDEEM CODE 👇
+	if input.Status == "Approved" {
+		// Buat kode dari helper jika sebelumnya belum punya kode
+		if booking.RedeemCode == "" {
+			booking.RedeemCode = helpers.GenerateRedeemCode()
+		}
+	} else if input.Status == "Rejected" || input.Status == "Cancelled" {
+		// Kosongkan kode jika peminjaman ditolak/dibatalkan
+		booking.RedeemCode = ""
+	}
+
 	config.DB.Save(&booking)
 
 	c.JSON(http.StatusOK, gin.H{

backend/helpers/generator.go

@@ -0,0 +1,21 @@
+package helpers
+
+import (
+	"math/rand"
+	"time"
+)
+
+// GenerateRedeemCode membuat kode unik 6 karakter kombinasi Angka dan Huruf
+func GenerateRedeemCode() string {
+	// Inisialisasi seed random berdasarkan waktu sekarang
+	rand.Seed(time.Now().UnixNano())
+
+	// Karakter yang diizinkan (Kombinasi Huruf Besar dan Angka)
+	charset := "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+
+	code := make([]byte, 6) // Panjang kode = 6 karakter
+	for i := range code {
+		code[i] = charset[rand.Intn(len(charset))]
+	}
+	return string(code)
+}

backend/models/entity.go

@@ -30,17 +30,19 @@ type Room struct {
 type Booking struct {
 	BookingID uuid.UUID `gorm:"type:uuid;default:uuid_generate_v4();primaryKey" json:"booking_id"`
 
-	// Tambahkan references:UserID
+	UserID uuid.UUID `gorm:"type:uuid;not null" json:"user_id"`
-	UserID    uuid.UUID `gorm:"type:uuid;not null" json:"user_id"`
+	User   User      `gorm:"foreignKey:UserID;references:UserID" json:"user,omitempty"`
-	User      User      `gorm:"foreignKey:UserID;references:UserID" json:"user,omitempty"`
 
-	// Tambahkan references:RoomID
+	RoomID uint `gorm:"not null" json:"room_id"`
-	RoomID    uint      `gorm:"not null" json:"room_id"` 
+	Room   Room `gorm:"foreignKey:RoomID;references:RoomID" json:"room"`
-	Room      Room      `gorm:"foreignKey:RoomID;references:RoomID" json:"room"`
 
 	StartTime time.Time `gorm:"not null" json:"start_time"`
 	EndTime   time.Time `gorm:"not null" json:"end_time"`
 	Purpose   string    `gorm:"not null" json:"purpose"`
 	Status    string    `gorm:"type:booking_status;default:'Pending'" json:"status"`
+
+	// 👇 PASTIKAN BARIS INI ADA DI DALAM SINI 👇
+	RedeemCode string `gorm:"type:varchar(10)" json:"redeem_code"`
+
 	CreatedAt time.Time `json:"created_at"`
 }