<?php
/**
 * Ekomi Integration Smart PRC Widget.
 *
 * @category  Ekomi
 * @package   Ekomi
 * @author    eKomi <info@ekomi-services.com>
 * @copyright Copyright (c) 2018 Ekomi ltd (http://www.ekomi.de)
 * @license   http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 * @link      http://www.ekomi.de
 */

/**
 * Returns the smart prc widget.
 *
 * @param string $product_id The product id.
 *
 * @return string
 */
function ekomi_prc_widget_link_shortcode( $product_id ) {
	$lang_code = EKOMI_INTEGRATION\ei_get_default_lang_code();
	if ( isset( $_GET['lang'] ) ) {
		$lang_code = sanitize_key( $_GET['lang'] );
	} else {
		$lang_code = ei_get_lang_code_from_url( $lang_code );
	}

	$lang_code = explode( '_', $lang_code )[0];
	if ( get_option( $lang_code . '_ee_active', '0' ) &&
		get_option( $lang_code . '_ee_show_prc_widget', '0' ) &&
		get_option( $lang_code . '_ee_prc_widget_token', '' )
		) {

		ob_start();

		$product_identifier = ei_get_product_identfier( $product_id, $lang_code );
		$customer_id        = get_option( $lang_code . '_ee_shop_id', '' );
		$widget_token       = get_option( $lang_code . '_ee_prc_widget_token', '' );

		include 'templates/prc-widget.php';

		$widget = ob_get_contents();

		ob_end_clean();

		return $widget;
	} else {
		return '';
	}
}

/**
 * Gets lang code from url.
 *
 * @param string $lang_code The Language iso code.
 *
 * @return mixed
 */
function ei_get_lang_code_from_url( $lang_code ) {
	$url = '';
	if ( isset( $_SERVER['HTTP_HOST'] ) && isset( $_SERVER['REQUEST_URI'] ) ) {
		$url = sanitize_key( $_SERVER['HTTP_HOST'] ) . sanitize_key( $_SERVER['REQUEST_URI'] );
	}

	foreach ( EKOMI_INTEGRATION\ei_prepare_lang_array( $lang_code ) as $code ) {
		if ( strpos( $url, $code . '.' ) !== false || strpos( $url, "/{$code}/" ) !== false ) {
			return $code;
		}
	}

	return $lang_code;
}

/**
 * Checks if product identifier is sku.
 *
 * @param mixed  $product_id The product identifier.
 * @param string $lang_code  The language code.
 *
 * @return mixed
 */
function ei_get_product_identfier( $product_id, $lang_code ) {
	if ( isset( $product_id['product_id'] ) ) {
		$product_id = $product_id['product_id'];
	}

	$product_identifier_option = get_option( $lang_code . '_ee_product_identifier', EKOMI_INTEGRATION\PRODUCT_IDENTIFIER_ID );
	if ( ei_is_product_identfier_sku( $product_identifier_option ) ) {
		$product_id = ei_get_product_sku( $product_id );
	}

	return $product_id;
}

/**
 * Checks the product identifier either Id or Sku.
 *
 * @param array $product_identifier_option Plugin configurations.
 *
 * @return boolean
 */
function ei_is_product_identfier_sku( $product_identifier_option ) {
	if ( EKOMI_INTEGRATION\PRODUCT_IDENTIFIER_SKU === $product_identifier_option ) {
		return true;
	}
	return false;
}

/**
 * Gets product sku.
 *
 * @param mixed $product_id The product identifier.
 *
 * @return mixed
 */
function ei_get_product_sku( $product_id ) {
	$_pf     = new WC_Product_Factory();
	$product = $_pf->get_product( $product_id );

	return $product->get_sku();
}

/**
 * Register short codes.
 */
add_shortcode( 'ekomi_prc_widget', __NAMESPACE__ . '\\ekomi_prc_widget_link_shortcode' );