<?php
/**
 * Public Holidays
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage Tag
 */

//WBClass::load('WBDatasource_XReference');

/**
 * Public Holidays
 *
 * @version 0.1.0
 * @package WB
 * @subpackage db
 */
class WBDatasource_Calendar_Holiday extends WBStdClass
{
    /**
     * Table access
     * @var WBDatasource_Table
     */
    private $table;

    /**
     * Table Micro Cache
     * @var WBDatasource_TableMicroCache
     */
    private $cache;

    const TABLE_HOLIDAY =   'holiday';

    private $clause =   array();

   /**
    * Constructor
    *
    * Parameter:
    *
    * @param array $parameter
    */
    public function __construct( $parameter = array() )
    {
        $this->table    =   WBClass::create('WBDatasource_Table');

        $this->cache  =   WBClass::create('WBDatasource_TableMicroCache', array('name' => __CLASS__));
        $this->cache->setTable(self::TABLE_HOLIDAY);
    }

    public function useCountry($country, $region = '')
    {
        $this->clause   =   array();
        $this->cache->flushAll(__CLASS__);

        // any country
        if (empty($country)) {
            return;
        }

        // limit country
        $this->clause[] =   array(
                                    'field' =>  'country',
                                    'value' =>  $country
                                );
        if (empty($region)) {
            return;
        }

        // limit region to national and region
        $tmp    =   array();
        $tmp[]  =   array(
                            'field' =>  'region',
                            'value' =>  $region
                        );
        $tmp[]  =   array(
                            'field' =>  'region',
                            'value' =>  ''
                        );

        $this->clause[] =   array(
                                'type'      =>  'complex',
                                'clause'    =>  $tmp,
                                'bond'      =>  'OR'
                            );
    }

    /**
     * Save Public Holiday
     *
     * @param array $data
     * @return string holiday id
     */
    public function save($data)
    {
        $old    =   $this->getByDate($data['holiday']);
        if (empty($old)) {
            return $this->table->save(self::TABLE_HOLIDAY, '__new', $data);
        }

        return $old[0]['id'];
    }

    private function getByDate($date = '')
    {
        if (empty($date)) {
            $date   =   time();
        }
        else {
            $date   =   strtotime($date);
        }
        $date   =   gmdate('Y-m-d', $date);

        $list   =   $this->cache->get($date);
        if (!empty($list)) {
            return $list;
        }

        $clause     =   $this->clause;
        $clause[]   =   array(
                                'field'     =>  'holiday',
                                'value'     =>  $date
                            );
        $list   =   $this->table->get(self::TABLE_HOLIDAY, null, null, $clause);
        $this->cache->add($date, $list);
        return $list;
    }

    public function getTitle($date = null)
    {
        $old    =   $this->getByDate($date);
        if (!count($old)) {
            return '';
        }
        return $old[0]['title'];
    }

    public function getBrief($date = null)
    {
        $old    =   $this->getByDate($date);
        if (!count($old)) {
            return '';
        }
        return $old[0]['brief'];
    }

    /**
     * Check Date for Holiday
     *
     * @param string date
     * @return bool  true of date is a holiday
     */
    public function isHoliday($date = null)
    {
        $old    =   $this->getByDate($date);
        if (count($old)) {
            return true;
        }
        return false;
    }
}