<?php
namespace app\models\core;

use app\components\BaseModel;
use yii\web\ForbiddenHttpException;

/**
 * Class Role
 * @package app\models\core
 */
class Role extends BaseModel
{
    const ADMIN = 1;
    const MANAGER = 2;
    const USER = 3;
    const TEAMLEADER = 4;
    const BLOCKED = 5;

    private $systemRoles = [self::ADMIN, self::BLOCKED];

    public static function tableName()
    {
        return 'role';
    }

    public function rules()
    {
        return [
            [['name'], 'required'],
            [['name'], 'string', 'max' => 255],
            [['name', 'description'], 'safe'],
            [['id'], 'systemRoleValidation'],
        ];
    }

    public function getUsers()
    {
        return $this->hasMany(User::className(), ['role_id' => 'id']);
    }

    public function delete()
    {
        if ($this->isSystemRole()) {
            throw new ForbiddenHttpException('A system role, so cannot be updated either deleted.');
        }

        $tran = self::getDb()->beginTransaction();
        try {
            foreach ($this->getUsers()->all() as $user) {
                $user->role_id = self::BLOCKED;
                $user->save();
            }

            parent::delete();

            $tran->commit();
        } catch (\Exception $e) {
            $tran->rollBack();
            throw new \Exception('Internal server error');
        }

        return true;
    }

    public function systemRoleValidation($attribute, $params, $validator)
    {
        if ($this->isSystemRole()) {
            $this->addError($attribute, 'A system role, so cannot be updated either deleted.');
        }
    }

    public function isSystemRole()
    {
        return in_array($this->id, $this->systemRoles);
    }
}
/**
 * @SWG\Definition(
 *     definition="Role",
 *     type="object",
 *     description="Role model",
 *     allOf={
 *       @SWG\Schema(
 *           @SWG\Property(property="id", type="integer", example="1"),
 *           @SWG\Property(property="name", type="string", example="Admin"),
 *           @SWG\Property(property="description", type="string", example="All existent permissions are granted to Admin.")
 *       )
 *     }
 * )
 */