feat: update models and relationships

app/Models/City.php

@@ -65,10 +65,15 @@ class City extends Model
 		return $this->hasMany(Airport::class);
 	}
 
-	public function tours()
+    public function destinationTours()
-	{
+    {
-		return $this->hasMany(Tour::class, 'destination_city_id');
+        return $this->hasMany(Tour::class, 'destination_city_id');
-	}
+    }
+
+    public function originTours()
+    {
+        return $this->hasMany(Tour::class, 'origin_city_id');
+    }
 
 	public function users()
 	{

app/Models/Flight.php

@@ -9,6 +9,8 @@ namespace App\Models;
 use App\Enums\FlightStatus;
 use App\Enums\FlightTripType;
 use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Attributes\Scope;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Database\Eloquent\Model;
 
@@ -65,6 +67,28 @@ class Flight extends Model
         'status',
         'trip_type'
     ];
+    #[Scope]
+    protected function applySort(Builder $query): void
+    {
+        switch (request()->input('sort')) {
+            case 'popularity':
+                $query->withCount('bookings')
+                    ->orderByDesc('bookings_count');
+                break;
+
+            case 'lowest':
+                $query->orderBy('price');
+                break;
+
+            case 'highest':
+                $query->orderByDesc('price');
+                break;
+
+            default:
+                $query->latest('id'); // همه‌ی پروازها
+                break;
+        }
+    }
 
     public function airline()
     {

app/Models/Tour.php

@@ -55,6 +55,10 @@ class Tour extends Model
 	{
 		return $this->belongsTo(Flight::class, 'file_id');
 	}
+    public function originCity()
+    {
+        return $this->belongsTo(City::class, 'origin_city_id');
+    }
 
 	public function city()
 	{
@@ -63,6 +67,11 @@ class Tour extends Model
 
 	public function tourDepartures()
 	{
-		return $this->hasMany(TourDeparture::class);
+		return $this->hasMany(TourDeparture::class , 'tour_id');
 	}
+
+    public function file()
+    {
+        return $this->belongsTo(File::class, 'file_id');
+    }
 }