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<?php

    namespace Inteve\Navigation;


    class NavigationItem
    {
        /** @var string */
        private $label;

        /** @var string|Url|NULL */
        private $destination;

        /** @var array */
        private $parameters;


        /**
         * @param  string
         * @param  string|Url|NULL
         * @param  array|NULL
         */
        public function __construct($label, $destination = NULL, array $parameters = NULL)
        {
            $this->label = $label;
            $this->destination = $this->detectDestination($destination);
            $this->parameters = $parameters !== NULL ? $parameters : array();
        }


        /**
         * @return string
         */
        public function getLabel()
        {
            return $this->label;
        }


        /**
         * @param  string
         * @return self
         */
        public function setLabel($label)
        {
            $this->label = $label;
            return $this;
        }


        /**
         * @return string|NULL
         */
        public function getDestination()
        {
            return $this->destination;
        }


        /**
         * @return array
         */
        public function getParameters()
        {
            return $this->parameters;
        }


        /**
         * @param  string|NULL|Url
         * @return string|NULL|Url
         */
        protected function detectDestination($destination)
        {
            if ($destination === NULL) {
                return NULL;
            }

            if ($destination instanceof Url) {
                return $destination;
            }

            if (strpos($destination, '/') !== FALSE) { // detect URL
                return new Url($destination);
            }

            if (strpos($destination, ':') !== FALSE) { // Nette link - Presenter:action
                $destination = ':' . ltrim($destination, ':');
            } // else -> this or action name

            return $destination;
        }
    }