feat: Reimplement order and invoice management with new service and repository layers, introduce compression middleware, and update database schema.

app/Models/Order.php

@@ -10,62 +10,53 @@ class Order extends Model
 {
     use HasFactory, SoftDeletes;
 
-    protected $table = 'order';
-
-    public $timestamps = true;
-
-    // protected $fillable = [
-    //     'order_num',
-    //     'customer_id',
-    //     'date',
-    //     'payment_id',
-    //     'discount_id',
-    //     'discount_value',
-    //     'invoice_id',
-    //     'user_id',
-    //     'amount',
-    //     'note',
-    //     'client_ip',
-    //     'status'
-    // ];
+    protected $table = 'orders';
 
     protected $guarded = [];
     public function customer()
     {
-        return $this->belongsTo(\App\Models\Customer::class);
-    }
-    public function discount()
-    {
-        return $this->belongsTo(\App\Models\Discount::class);
-    }
-
-    public function invoice()
-    {
-        return $this->belongsTo(\App\Models\Invoice::class, 'invoice_id', 'id');
-    }
-
-    public function payment()
-    {
-        return $this->belongsTo(\App\Models\Payment::class, 'payment_method', 'id');
+        return $this->belongsTo(Customer::class);
     }
 
     public function user()
     {
-        return $this->belongsTo(\App\Models\User::class);
+        return $this->belongsTo(User::class);
     }
 
-    public function orderItem()
+    public function discount()
     {
-        return $this->belongsToMany(\App\Models\InvoiceItem::class, 'order_items', 'order_id', 'invoice_item_id');
+        return $this->belongsTo(Discount::class);
     }
 
+    /** Line items that make up this order. */
     public function orderItems()
     {
         return $this->hasMany(OrderItem::class, 'order_id');
     }
 
-    public function vmWare()
+    /** Invoice generated from this order. */
+    public function invoice()
     {
-        return $this->hasMany(\App\Models\ModuleVmware::class, 'order_id', 'id');
+        return $this->hasOne(Invoice::class, 'order_id');
+    }
+
+    // -------------------------------------------------------------------------
+    // Helpers
+    // -------------------------------------------------------------------------
+
+    public function getStatusLabelAttribute(): string
+    {
+        return match ($this->status) {
+            'pending' => 'Chờ xử lý',
+            'processing' => 'Đang xử lý',
+            'completed' => 'Hoàn tất',
+            'cancelled' => 'Đã hủy',
+            default => ucfirst($this->status),
+        };
+    }
+
+    public function payment()
+    {
+        return $this->belongsTo(Payment::class);
     }
 }