<?php

namespace Da\User\Widget;

use Da\User\Model\Assignment;
use Da\User\Service\UpdateAuthAssignmentsService;
use Da\User\Traits\AuthManagerTrait;
use Da\User\Traits\ContainerTrait;
use yii\base\InvalidConfigException;
use yii\base\Widget;
use yii\helpers\ArrayHelper;

class AssignmentsWidget extends Widget
{
    use AuthManagerTrait;
    use ContainerTrait;

    /**
     * @var integer ID of the user to whom auth items will be assigned.
     */
    public $userId;
    /**
     * @var string[] the post parameters
     */
    public $params = [];

    /**
     * @inheritdoc
     * @throws InvalidConfigException
     */
    public function init()
    {
        parent::init();
        if ($this->userId === null) {
            throw new InvalidConfigException( __CLASS__ . '::$userId is required');
        }
    }

    /**
     * @inheritdoc
     */
    public function run()
    {
        $model = $this->make(Assignment::class, [], ['user_id' => $this->userId]);

        if ($model->load($this->params)) {
            $this->make(UpdateAuthAssignmentsService::class, [$model])->run();
        }

        return $this->render('/widgets/assignments/form', [
            'model' => $model,
            'availableItems' => $this->getAvailableItems()
        ]);
    }

    /**
     * Returns all available auth items to be attached to the user
     *
     * @return array
     */
    protected function getAvailableItems()
    {
        return ArrayHelper::map($this->getAuthManager()->getItems(), 'name', function ($item) {
            return empty($item->description)
                ? $item->name
                : $item->name . ' (' . $item->description . ')';
        });
    }
}