<?php

class Point extends Model
{
	function __construct($fromArray = array())
	{
		$this->_tableName_ = 'points';
		parent::__construct($fromArray);
		$this->setRelation('category', 'categoryId', 'Category', 'id', self::TO_ONE);
		$this->setRelation('authorUser', 'author', 'User', 'id', self::TO_ONE);
		$this->setRelation('photos', 'id', 'Photo', 'pointId', self::TO_MANY);
	}

	static function model()
	{
		return new self();
	}

	public function getImg()
	{
		$img = $this->img;
		if ($img == '')
		{
			$photos = $this->photos;
			$img = array_shift($photos);

			if (!$img)
				return null;

			$img = '/photos/small/'.$img->name;
		}

		return $img;
	}

	public function getRandom()
	{
		$res = App::DB()->query("SELECT FLOOR(RAND() * COUNT(*)) AS `offset` FROM `" . $this->_tableName_ . "`")->fetch(PDO::FETCH_ASSOC);
		$offset = $res['offset'];

		$res = App::DB()->query('SELECT `id` FROM ' . $this->_tableName_ . ' LIMIT ' . $offset . ',1;')->fetch(PDO::FETCH_ASSOC);
		$pointId = $res['id'];

		return $this->getByPK($pointId);
	}

	public function getCountByUser($userId)
	{
		$res = App::DB()->query('SELECT count(`id`) AS `cnt` FROM ' . $this->_tableName_ . ' WHERE `author` = ' . $userId . ' ;')->fetch(PDO::FETCH_ASSOC);
		return $res['cnt'];
	}
}