<?php
/**
 * Geoplugin Currency Shortcode
 *
 * Use geoplugin.net to automatically show a live conversion of a currency amount
 * on your site. Has GBP as default base currency. If you want a different
 * currency or output format, fork the plugin.
 *
 * @package GenesisJsNoJs
 * @author Gary Jones
 * @license GPL3
 *
 * Plugin Name: Geoplugin Currency Shortcode
 * Plugin URI: http://code.garyjones.co.uk/plugins/geoplugin-currency-shortcode
 * Description: Use geoplugin.net to automatically show a live conversion of a currency amount on your site. Has GBP as default base currency. If you want a different currency or output format, fork the plugin.
 * Version: 1.0
 * Author: Gary Jones
 * Author URI: http://garyjones.co.uk/
 * License: GPL3
 */

add_shortcode( 'currency', 'geoplugin_currency_shortcode' );
/**
 * The currency shortcode handler.
 *
 * Usage:
 * [currency]800[/currency]
 * [currency base="USD"]2000[/currency]
 *
 * The ~ character is included in the output to indicate that it is only an
 * approximate conversion, as the geoplugin.net rates will be different to the
 * rates you might actually use.
 *
 * @since 1.0
 *
 * @param array $atts Attributes - only base="XXX" is supported, where XXX is
 * the three-letter currency code (GBP, USD, EUR etc.)
 * @param string $content Contains the numerical amount. Do not include the
 * original currency unit in this.
 * @return string Original content, followed by converted amount if currency of
 * users IP address location is different to base currency.
 */
function geoplugin_currency_shortcode( $atts, $content = null ) {

	extract( shortcode_atts( array(
				'base' => 'GBP'
					), $atts ) );

	$geoPlugin_array = unserialize( file_get_contents( 'http://www.geoplugin.net/php.gp?base_currency=' . $base . '&ip=' . $_SERVER['REMOTE_ADDR'] ) );
	if ( isset( $geoPlugin_array['geoplugin_currencyCode'] ) && $geoPlugin_array['geoplugin_currencyCode'] != $base && is_numeric( $content ) )
		return $content . ' (~' . $geoPlugin_array['geoplugin_currencySymbol'] . round( ($content * $geoPlugin_array['geoplugin_currencyConverter'] ), 2 ) . ')';
	else
		return $content;

}