<?php

/**
 * GEOLOCATION HOOK FOR WHMCS
 * This hook will automatically setup currency and language
 * for nonlogged users in your clientarea.
 * 
 * 
 * For more information, read the whole article here:
 * http://blog.whmcs.com
 * 
 * 
 * @author  ModulesGarden
 * @link    http://www.modulesgarden.com
 */

$country_to_currency = array(
    'default' => 'USD',
    'US'      => 'USD',
    'UK'      => 'GBP',
    'PL'      => 'PLN',
    'DE'      => 'EUR',
    'NL'      => 'EUR',
    'FR'      => 'EUR',
    'IT'      => 'EUR',
    'CH'      => 'CHF',
    // NOTE: You can add more below
);

$country_to_language = array(
    'default' => 'english',
    'US'      => 'english',
    'UK'      => 'english',
    'DE'      => 'german',
    'FR'      => 'french',
    'IT'      => 'italian',
    // NOTE: You can add more below
);

$allowed_scripts = array(
    'index.php',
    'clientarea.php',
    'cart.php',
    'knowledgebase.php',
    'announcements.php',
    'serverstatus.php',
    'affiliates.php',
    'contact.php'
    // NOTE: You can add more below
);


/**
* FUNCTION geolocation_getCurrencyId
* This function will return currency id for specific code.
* 
* @param  string 
* @return int
*/
function geolocation_getCurrencyId($currency) {
    $q = mysql_query('SELECT id FROM tblcurrencies WHERE code = "'.mysql_escape_string($currency).'"'); // escape string just in case
    $r = mysql_fetch_assoc($q);
    mysql_free_result($q);
    
    if(isset($r['id'])) {
        return $r['id'];
    }
}


/**
 * Main Geolocation Script
 * 
 * NOT run script
 * - if we are in adminarea
 * - if already setup for this session
 * - if user is logged in
 * - NEW: allowing to run the hook only for specific scripts (defined above)
 */
$_script_path = substr($_SERVER['SCRIPT_NAME'], strrpos($_SERVER['SCRIPT_NAME'], DIRECTORY_SEPARATOR)+1);

if(in_array($_script_path, $allowed_scripts) && strpos($_SERVER['REQUEST_URI'], $customadminpath) === false && !isset($_SESSION['geolocation_setup']) && $_SESSION['uid'] == false) {
    $_SESSION['geolocation_setup'] = true; // prevent from redirecting back again in this session
        
    
    /**
     * Get Country using external service - Hostip.info example
     * NOTE: You can handle this part with any other method.
     */
    $current_country = '';
    $ret = file_get_contents("http://api.hostip.info/get_json.php?ip=".$_SERVER['REMOTE_ADDR']); // this can be called also via cURL
    $parsed_json = @json_decode($ret,true);
    if(isset($parsed_json['country_code'])) {
        $current_country = $parsed_json['country_code'];
    }
    
    
    /**
     * Get language, currency and currency ID in order to setup the right values in the system
     */
    $currency = $current_country != '' && isset($country_to_currency[$current_country]) 
                ? $country_to_currency[$current_country]
                : $country_to_currency['default'];    
    
    $currency_id = geolocation_getCurrencyId($currency);
    
    $language = $current_country != '' && isset($country_to_language[$current_country]) 
                ? $country_to_language[$current_country]
                : $country_to_language['default'];
    
    
    /**
     * Setup Currency Session
     * NOTE: You can remove/disable this part if not needed.
     */
    if($currency_id && (!isset($_SESSION['currency']) || $_SESSION['currency'] != $currency)) {         
        $_SESSION['currency'] = $_SESSION['switched_currency'] = $currency_id;
    }
    
    /**
     * Setup URL Redirection to Switch Language
     * NOTE: You can remove/disable this part if not needed.
     */
    if(!isset($_SESSION['Language']) || $_SESSION['Language'] != $language) {
        $location = '?language='.$language;     
        if($_SERVER['QUERY_STRING'] != '')
            $location .= '&'.$_SERVER['QUERY_STRING'];
        
        ob_clean();
        header('location: '.$location);
        die();
    }
    
}
/**
 * Preventing from switching currency by user
 * NOTE: You can remove/disable this part if not needed.
 */
if(isset($_SESSION['switched_currency']) && $_SESSION['switched_currency'] != $_SESSION['currency'] ) {
    $_SESSION['currency'] = $_SESSION['switched_currency'];
}
?>