<?php
namespace App\Eloquent\Traits;

trait Delegatable
{

    public function getAttribute($key)
    {
        $delegates = property_exists($this, 'delegate') ? $this->delegate : [];

        foreach ($delegates as $relationKey => $fields) {
            if (in_array($key, $fields) === true) {
                $foreign = $this->{$relationKey};
                return $foreign ? $foreign->getAttribute($key) : null;
            }
        }

        return parent::getAttribute($key);
    }

    /**
     * {@inheritdoc}
     */
    public function save(array $options = [])
    {
        $result = parent::save($options);

        if ($result === true) {
            $delegates = property_exists($this, 'delegate') ? $this->delegate : [];

            foreach ($delegates as $relationKey => $fields) {
                $foreign = $this->{$relationKey};

                if (($foreign !== null) && ($foreign->exists === false)) {
                    $relation = $this->{$relationKey}();
                    $model = $relation->getQuery()->getModel();

                    $foreign->setAttribute($model->getP, 1);
                    $foreign->save();
                }
            }
        }

        return $result;
    }

    public function setAttribute($key, $value)
    {
        $delegates = property_exists($this, 'delegate') ? $this->delegate : [];

        foreach ($delegates as $relationKey => $fields) {
            if (in_array($key, $fields) === true) {
                $foreign = $this->{$relationKey};

                // automatically create a new instance of the foreign object if it doesn't exist
                if ($foreign === null) {
                    $relation = $this->{$relationKey}();
                    $model = $relation->getQuery()->getModel();
                    $foreign = $model->newInstance();

                    $this->setRelation($relationKey, $foreign);
                }

                return $foreign->setAttribute($key, $value);
            }
        }

        return parent::setAttribute($key, $value);
    }
}