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<?php
/** 
 * @package     VikBooking
 * @subpackage  core
 * @author      E4J s.r.l.
 * @copyright   Copyright (C) 2022 E4J s.r.l. All Rights Reserved.
 * @license     http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 * @link        https://vikwp.com
 */

// No direct access
defined('ABSPATH') or die('No script kiddies please!');

/**
 * State/Province helper class.
 * 
 * @since 	1.16.0 (J) - 1.6.0 (WP)
 */
class VBOStateHelper
{
	/**
	 * Finds the state/province full name from the given state 2-char code and country.
	 * 
	 * @param 	string 	 $state_2_code 	the selected state/province.
	 * @param 	string 	 $country 		the selected country (probably 3-char code).
	 * @param 	boolean  $whole 		true to get the whole state record found.
	 * 
	 * @return 	string|array			the state/province full name found or whole record.
	 */
	public static function getFullName($state_2_code, $country = '', $whole = false)
	{
		$dbo = JFactory::getDbo();

if (empty($state_2_code) || empty($country)) {
			return $state_2_code;
		}

// find the ID of the given country
		$id_country = static::getCountryId($country);

if (empty($id_country)) {
			return $state_2_code;
		}

// make sure this province exists
		$q = $dbo->getQuery(true)
			->select('*')
			->from($dbo->qn('#__vikbooking_states'))
			->where($dbo->qn('id_country') . ' = ' . (int) $id_country)
			->where($dbo->qn('state_2_code') . ' = ' . $dbo->q($state_2_code));
		$dbo->setQuery($q, 0, 1);
		$dbo->execute();
		if (!$dbo->getNumRows()) {
			// no records found
			return $state_2_code;
		}

$state_info = $dbo->loadAssoc();

return $whole ? $state_info : $state_info['state_name'];
	}

/**
	 * Attempts to find the country ID from the given identifier.
	 * 
	 * @param 	string 	$country 	country identifier (id, name or 2/3-char code).
	 * 
	 * @return 	int 				country ID found or null.
	 */
	public static function getCountryId($country)
	{
		$dbo = JFactory::getDbo();

if (is_numeric($country)) {
			$q = $dbo->getQuery(true)
				->select($dbo->qn('id'))
				->from($dbo->qn('#__vikbooking_countries'))
				->where($dbo->qn('id') . ' = ' . (int) $country);

$dbo->setQuery($q, 0, 1);

return $dbo->loadResult();
		}

// no null values accepted
		$country = (string) $country;

// find country ID by name or code
		$field_value = $country;
		$field_name  = $dbo->qn('country_name');
		if (strlen($country) == 3) {
			$field_name = $dbo->qn('country_3_code');
		} elseif (strlen($country) == 2) {
			$field_name = $dbo->qn('country_2_code');
		}

$q = $dbo->getQuery(true)
			->select($dbo->qn('id'))
			->from($dbo->qn('#__vikbooking_countries'))
			->where($field_name . ' = ' . $dbo->q($field_value));

$dbo->setQuery($q, 0, 1);

return $dbo->loadResult();
	}

/**
	 * Returns all states for the given country ID.
	 * 
	 * @param 	int 	$id_country
	 * 
	 * @return 	array 	list of states found, if any.
	 */
	public static function getCountryStates($id_country)
	{
		$dbo = JFactory::getDbo();

$q = $dbo->getQuery(true)
			->select('*')
			->from($dbo->qn('#__vikbooking_states'))
			->where($dbo->qn('id_country') . ' = ' . (int) $id_country);

$dbo->setQuery($q);

return $dbo->loadAssocList();
	}

/**
	 * Returns the country record from the given ID.
	 * 
	 * @param 	int 	$id_country 	The country record ID.
	 * 
	 * @return 	?array 					Associative record or null.
	 * 
	 * @since 	1.17.2 (J) - 1.7.2 (WP)
	 */
	public static function getCountryData($id_country)
	{
		$dbo = JFactory::getDbo();

$q = $dbo->getQuery(true)
			->select('*')
			->from($dbo->qn('#__vikbooking_countries'))
			->where($dbo->qn('id') . ' = ' . (int) $id_country);

$dbo->setQuery($q);

return $dbo->loadAssoc();
	}
}