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<?php

    namespace Donut\PostFeed;

    use Donut\Message;


    class PostFeedItem
    {
        /** @var string|int */
        private $id;

        /** @var string */
        private $title;

        /** @var string */
        private $date;

        /** @var string|NULL */
        private $text;

        /** @var string|NULL */
        private $url;

        /** @var string|NULL */
        private $image;

        /** @var array|NULL */
        private $meta;


        /**
         * @param  string|int
         * @param  string
         * @param  string
         * @param  string|NULL
         * @param  string|NULL
         * @param  string|NULL
         * @param  array|NULL
         */
        public function __construct($id, $title, $date, $text, $url, $image, array $meta = NULL)
        {
            $this->id = $id;
            $this->title = $title;
            $this->date = $date;
            $this->text = $text;
            $this->url = $url;
            $this->image = $image;
            $this->meta = $meta;
        }


        /**
         * @return string|int
         */
        public function getId()
        {
            return $this->id;
        }


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


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


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


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


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


        /**
         * @return array|NULL
         */
        public function getMeta()
        {
            return $this->meta;
        }


        /**
         * @return array
         */
        public function toArray()
        {
            return array(
                'id' => $this->getId(),
                'title' => $this->getTitle(),
                'date' => $this->getDate(),
                'text' => $this->getText(),
                'url' => $this->getUrl(),
                'image' => $this->getImage(),
                'meta' => $this->getMeta(),
            );
        }


        /**
         * @param  array
         * @return self
         * @throws \RuntimeException
         */
        public static function fromArray(array $data)
        {
            if (!isset($data['id'], $data['title'], $data['date'])) {
                throw new \RuntimeException("Missing required property");
            }

            return new static(
                $data['id'],
                $data['title'],
                $data['date'],
                self::getData($data, 'text'),
                self::getData($data, 'url'),
                self::getData($data, 'image'),
                self::getData($data, 'meta')
            );
        }


        private static function getData($data, $field)
        {
            return isset($data[$field]) ? $data[$field] : NULL;
        }
    }