<?php
if (!defined('ABSPATH')) { exit; }

function wplocation_to_Array( $data = "" )
{
    if ( empty( $data ) )
        return array();

    if ( is_array( $data ) )
        return array_map('trim', $data );

    foreach (wplocation_country_code_map() as $code => $name) {
        if (strpos($name, ',') !== false) { $data = str_ireplace($name, $code, $data); }
    }

    if ( strpos($data, ',') !== false)
        return array_map( 'trim', explode( ',', $data ) );

    return array( trim( $data ) );
}

function wplocation_visitor_country_name() {

    $wplocation_ip_address  = wplocation_get_ipaddress();  // Get visitor's IP address

    $get_country_iso        = wplocation_get_country_iso($wplocation_ip_address); // Get visitor's country ISO

    if( (empty($get_country_iso)) ) { // if invalid Country ISO return
        return false;
    }

    $get_country_iso = strtolower($get_country_iso);

    $get_country_name       = wplocation_iso_to_country( $get_country_iso ); // Get visitor's country Name

    if( $get_country_name == false ) { // if (invalid/not found) Country name return
        return false;
    }

    $get_country_name = strtolower($get_country_name);

    return $get_country_name;
}

// Retrieves the IP address from the HTTP Headers
function wplocation_get_ipaddress() {
    // Forwarded headers are untrusted unless infrastructure explicitly supplies
    // an independently verified address through this filter.
    $remote = isset($_SERVER['REMOTE_ADDR']) && is_string($_SERVER['REMOTE_ADDR']) ? trim(sanitize_text_field(wp_unslash($_SERVER['REMOTE_ADDR']))) : '';
    $address = apply_filters('wplocation_verified_client_ip', $remote);
    return is_string($address) && filter_var($address, FILTER_VALIDATE_IP) ? $address : '';
}

// Check if IP address is a valid IPv4 address
function wplocation_is_valid_ipv4($ipv4) 
{
    if(filter_var($ipv4, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === FALSE) {
    // Is not ipv4
        return false;
    }

    // Is valid ipv4
    return true;
}


// Check if IP address is a valid IPv6 address
function wplocation_is_valid_ipv6($ipv6) 
{
    if(filter_var($ipv6, FILTER_VALIDATE_IP,FILTER_FLAG_IPV6) === FALSE) {
        // Is not ipv6
        return false;
    }

    // Is valid ipv6
    return true;
}

function wplocation_get_country_iso($address) {
    static $results = array();
    $database = wplocation_database_path();
    if (!is_string($address) || !filter_var($address, FILTER_VALIDATE_IP) || !is_file($database)) {
        return false;
    }
    $site = function_exists('get_current_blog_id') ? get_current_blog_id() : 0;
    $key = $site . '|' . $database . '|' . $address;
    if (array_key_exists($key, $results)) {
        return $results[$key];
    }
    $country = false;
    try {
        $reader = new \MaxMind\Db\Reader($database);
        $type = $reader->metadata()->databaseType;
        if ($type !== 'GeoLite2-Country') { $reader->close(); return false; }
        $record = $reader->get($address);
        $reader->close();
        if (!empty($record['country']['iso_code']) && preg_match('/^[A-Z]{2}$/', $record['country']['iso_code'])) {
            $country = $record['country']['iso_code'];
        }
    } catch (Throwable $e) {
        $country = false;
    }
    $results[$key] = $country;
    return $country;
}