feat(tickets): add source_purchase_id to tickets and update related logic

app/Domains/Ticket/Models/Ticket.php

@@ -3,6 +3,7 @@
 namespace App\Domains\Ticket\Models;
 
 use App\Domains\Auth\Models\User;
+use App\Domains\Purchase\Models\Purchase;
 use App\Domains\Tenant\Models\Tenant;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -14,6 +15,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
     'ticket',
     'name',
     'description',
+    'source_purchase_id',
     'source_catalog_item_id',
     'source_variant_id',
     'starts_at',
@@ -38,6 +40,7 @@ class Ticket extends Model
         return [
             'source_catalog_item_id' => 'integer',
             'source_variant_id' => 'integer',
+            'source_purchase_id' => 'integer',
             'starts_at' => 'datetime',
             'expires_at' => 'datetime',
             'used_at' => 'datetime',
@@ -57,6 +60,12 @@ class Ticket extends Model
         return $this->belongsTo(User::class);
     }
 
+    /** @return BelongsTo<Purchase, $this> */
+    public function sourcePurchase(): BelongsTo
+    {
+        return $this->belongsTo(Purchase::class, 'source_purchase_id');
+    }
+
     public function isValid(): bool
     {
         $now = now();