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app/Models/UserCode.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class UserCode extends Model
+{
+    use HasFactory;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'action',
+        'user_id',
+        'data',
+    ];
+
+
+    /**
+     * Boot function from Laravel.
+     *
+     * @return void
+     */
+    protected static function boot()
+    {
+        parent::boot();
+        static::creating(function ($model) {
+            UserCode::clearExpired();
+
+            if (empty($model->{'code'}) === true) {
+                while (true) {
+                    $code = random_int(100000, 999999);
+                    if (UserCode::where('code', $code)->count() === 0) {
+                        $model->{'code'} = $code;
+                        break;
+                    }
+                }
+            }
+        });
+    }
+
+    /**
+     * Generate new code
+     *
+     * @return void
+     */
+    public function regenerate()
+    {
+        while (true) {
+            $code = random_int(100000, 999999);
+            if (UserCode::where('code', $code)->count() === 0) {
+                $this->code = $code;
+                break;
+            }
+        }
+    }
+
+    /**
+     * Clear expired user codes
+     *
+     * @return void
+     */
+    public static function clearExpired()
+    {
+        UserCode::where('updated_at', '<=', now()->subDays(5))->delete();
+    }
+
+    /**
+     * Get associated user
+     *
+     * @return BelongsTo
+     */
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+}