<?php

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/**

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* Checkout Shortcode

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*

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* Used on the checkout page, the checkout shortcode displays the checkout process.

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*

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* @package WooCommerce\Shortcodes\Checkout

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* @version 2.0.0

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*/

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defined( 'ABSPATH' ) || exit;

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use Automattic\WooCommerce\Enums\OrderStatus;

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use Automattic\WooCommerce\Internal\Utilities\Users;

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/**

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* Shortcode checkout class.

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*/

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class WC_Shortcode_Checkout {

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/**

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* Get the shortcode content.

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*

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* @param array $atts Shortcode attributes.

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* @return string

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*/

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public static function get( $atts ) {

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return WC_Shortcodes::shortcode_wrapper( array( __CLASS__, 'output' ), $atts );

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}

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/**

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* Output the shortcode.

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*

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* @param array $atts Shortcode attributes.

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*/

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public static function output( $atts ) {

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global $wp;

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// Check cart class is loaded or abort.

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if ( is_null( WC()->cart ) ) {

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return;

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}

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// Backwards compatibility with old pay and thanks link arguments.

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if ( isset( $_GET['order'] ) && isset( $_GET['key'] ) ) { // WPCS: input var ok, CSRF ok.

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wc_deprecated_argument( __CLASS__ . '->' . __FUNCTION__, '2.1', '"order" is no longer used to pass an order ID. Use the order-pay or order-received endpoint instead.' );

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// Get the order to work out what we are showing.

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$order_id = absint( $_GET['order'] ); // WPCS: input var ok.

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$order = wc_get_order( $order_id );

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if ( $order && $order->has_status( OrderStatus::PENDING ) ) {

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$wp->query_vars['order-pay'] = absint( $_GET['order'] ); // WPCS: input var ok.

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} else {

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$wp->query_vars['order-received'] = absint( $_GET['order'] ); // WPCS: input var ok.

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}

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}

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// Handle checkout actions.

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if ( ! empty( $wp->query_vars['order-pay'] ) ) {

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self::order_pay( $wp->query_vars['order-pay'] );

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} elseif ( isset( $wp->query_vars['order-received'] ) ) {

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self::order_received( $wp->query_vars['order-received'] );

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} else {

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self::checkout();

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}

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}

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/**

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* Show the pay page.

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*

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* @throws Exception When validate fails.

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* @param int $order_id Order ID.

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*/

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private static function order_pay( $order_id ) {

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do_action( 'before_woocommerce_pay' );

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$order_id = absint( $order_id );

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// Pay for existing order.

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if ( isset( $_GET['pay_for_order'], $_GET['key'] ) && $order_id ) { // WPCS: input var ok, CSRF ok.

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try {

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$order_key = isset( $_GET['key'] ) ? wc_clean( wp_unslash( $_GET['key'] ) ) : ''; // WPCS: input var ok, CSRF ok.

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$order = wc_get_order( $order_id );

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// Order or payment link is invalid.

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if ( ! $order || $order->get_id() !== $order_id || ! hash_equals( $order->get_order_key(), $order_key ) ) {

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throw new Exception( __( 'Sorry, this order is invalid and cannot be paid for.', 'woocommerce' ) );

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}

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// Logged out customer does not have permission to pay for this order.

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if ( ! current_user_can( 'pay_for_order', $order_id ) && ! is_user_logged_in() ) {

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wc_print_notice( esc_html__( 'Please log in to your account below to continue to the payment form.', 'woocommerce' ), 'notice' );

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woocommerce_login_form(

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array(

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'redirect' => $order->get_checkout_payment_url(),

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)

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);

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return;

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}

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// Add notice if logged in customer is trying to pay for guest order.

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if ( ! $order->get_user_id() && is_user_logged_in() ) {

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// If order has does not have same billing email then current logged in user then show warning.

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if ( $order->get_billing_email() !== wp_get_current_user()->user_email ) {

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wc_print_notice( __( 'You are paying for a guest order. Please continue with payment only if you recognize this order.', 'woocommerce' ), 'error' );

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}

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}

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// Logged in customer trying to pay for someone else's order.

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if ( ! current_user_can( 'pay_for_order', $order_id ) ) {

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throw new Exception( __( 'This order cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ) );

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}

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// Does not need payment.

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if ( ! $order->needs_payment() ) {

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/* translators: %s: order status */

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throw new Exception( sprintf( __( 'This order&rsquo;s status is &ldquo;%s&rdquo;&mdash;it cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ), wc_get_order_status_name( $order->get_status() ) ) );

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}

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// Ensure order items are still stocked if paying for a failed order. Pending orders do not need this check because stock is held.

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if ( ! $order->has_status( wc_get_is_pending_statuses() ) ) {

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$quantities = array();

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foreach ( $order->get_items() as $item_key => $item ) {

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if ( $item && is_callable( array( $item, 'get_product' ) ) ) {

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$product = $item->get_product();

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if ( ! $product ) {

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continue;

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}

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$quantities[ $product->get_stock_managed_by_id() ] = isset( $quantities[ $product->get_stock_managed_by_id() ] ) ? $quantities[ $product->get_stock_managed_by_id() ] + $item->get_quantity() : $item->get_quantity();

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}

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}

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// Stock levels may already have been adjusted for this order (in which case we don't need to worry about checking for low stock).

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if ( ! $order->get_data_store()->get_stock_reduced( $order->get_id() ) ) {

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foreach ( $order->get_items() as $item_key => $item ) {

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if ( $item && is_callable( array( $item, 'get_product' ) ) ) {

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$product = $item->get_product();

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if ( ! $product ) {

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continue;

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}

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if ( ! apply_filters( 'woocommerce_pay_order_product_in_stock', $product->is_in_stock(), $product, $order ) ) {

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/* translators: %s: product name */

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throw new Exception( sprintf( __( 'Sorry, "%s" is no longer in stock so this order cannot be paid for. We apologize for any inconvenience caused.', 'woocommerce' ), $product->get_name() ) );

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}

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// We only need to check products managing stock, with a limited stock qty.

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if ( ! $product->managing_stock() || $product->backorders_allowed() ) {

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continue;

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}

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// Check stock based on all items in the cart and consider any held stock within pending orders.

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$held_stock = wc_get_held_stock_quantity( $product, $order->get_id() );

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$required_stock = $quantities[ $product->get_stock_managed_by_id() ];

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if ( ! apply_filters( 'woocommerce_pay_order_product_has_enough_stock', ( $product->get_stock_quantity() >= ( $held_stock + $required_stock ) ), $product, $order ) ) {

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/* translators: 1: product name 2: quantity in stock */

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throw new Exception( sprintf( __( 'Sorry, we do not have enough "%1$s" in stock to fulfill your order (%2$s available). We apologize for any inconvenience caused.', 'woocommerce' ), $product->get_name(), wc_format_stock_quantity_for_display( $product->get_stock_quantity() - $held_stock, $product ) ) );

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}

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}

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}

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}

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}

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// If we cannot match the order with the current user, ask that they verify their email address.

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if ( self::guest_should_verify_email( $order, 'order-pay' ) ) {

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wc_get_template(

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'checkout/form-verify-email.php',

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array(

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'failed_submission' => ! empty( $_POST['email'] ), // phpcs:ignore WordPress.Security.NonceVerification.Missing

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'verify_url' => $order->get_checkout_payment_url(),

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)

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);

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return;

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}

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WC()->customer->set_props(

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array(

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'billing_country' => $order->get_billing_country() ? $order->get_billing_country() : null,

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'billing_state' => $order->get_billing_state() ? $order->get_billing_state() : null,

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'billing_postcode' => $order->get_billing_postcode() ? $order->get_billing_postcode() : null,

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)

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);

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WC()->customer->save();

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$available_gateways = WC()->payment_gateways()->get_available_payment_gateways();

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WC()->payment_gateways()->set_current_gateway( $available_gateways );

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/**

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* Allows the text of the submit button on the Pay for Order page to be changed.

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*

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* @param string $text The text of the button.

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*

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* @since 3.0.2

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*/

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$order_button_text = apply_filters( 'woocommerce_pay_order_button_text', __( 'Pay for order', 'woocommerce' ) );

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/**

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* Triggered right before the Pay for Order form, after validation of the order and customer.

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*

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* @param WC_Order $order The order that is being paid for.

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* @param string $order_button_text The text for the submit button.

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* @param array $available_gateways All available gateways.

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*

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* @since 6.6

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*/

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do_action( 'before_woocommerce_pay_form', $order, $order_button_text, $available_gateways );

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wc_get_template(

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'checkout/form-pay.php',

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array(

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'order' => $order,

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'available_gateways' => $available_gateways,

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'order_button_text' => $order_button_text,

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)

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);

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} catch ( Exception $e ) {

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wc_print_notice( $e->getMessage(), 'error' );

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}

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} elseif ( $order_id ) {

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// Pay for order after checkout step.

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$order_key = isset( $_GET['key'] ) ? wc_clean( wp_unslash( $_GET['key'] ) ) : ''; // WPCS: input var ok, CSRF ok.

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$order = wc_get_order( $order_id );

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if ( $order && $order->get_id() === $order_id && hash_equals( $order->get_order_key(), $order_key ) ) {

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if ( $order->needs_payment() ) {

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wc_get_template( 'checkout/order-receipt.php', array( 'order' => $order ) );

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} else {

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/* translators: %s: order status */

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wc_print_notice( sprintf( __( 'This order&rsquo;s status is &ldquo;%s&rdquo;&mdash;it cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ), wc_get_order_status_name( $order->get_status() ) ), 'error' );

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}

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} else {

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wc_print_notice( __( 'Sorry, this order is invalid and cannot be paid for.', 'woocommerce' ), 'error' );

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}

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} else {

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wc_print_notice( __( 'Invalid order.', 'woocommerce' ), 'error' );

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}

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do_action( 'after_woocommerce_pay' );

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}

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/**

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* Show the thanks page.

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*

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* @param int $order_id Order ID.

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*/

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private static function order_received( $order_id = 0 ) {

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$order = false;

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// Get the order.

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$order_id = apply_filters( 'woocommerce_thankyou_order_id', absint( $order_id ) );

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$order_key = apply_filters( 'woocommerce_thankyou_order_key', empty( $_GET['key'] ) ? '' : wc_clean( wp_unslash( $_GET['key'] ) ) ); // WPCS: input var ok, CSRF ok.

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if ( $order_id > 0 ) {

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$order = wc_get_order( $order_id );

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if ( ( ! $order instanceof WC_Order ) || ! hash_equals( $order->get_order_key(), $order_key ) ) {

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$order = false;

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}

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}

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// Empty awaiting payment session.

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unset( WC()->session->order_awaiting_payment );

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// In case order is created from admin, but paid by the actual customer, store the ip address of the payer

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// when they visit the payment confirmation page.

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if ( $order && $order->is_created_via( 'admin' ) ) {

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$order->set_customer_ip_address( WC_Geolocation::get_ip_address() );

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$order->save();

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}

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// Empty current cart.

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wc_empty_cart();

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// If the specified order ID was invalid, we still render the default order received page (which will simply

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// state that the order was received, but will not output any other details: this makes it harder to probe for

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// valid order IDs than if we state that the order ID was not recognized).

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if ( ! $order ) {

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wc_get_template( 'checkout/thankyou.php', array( 'order' => false ) );

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return;

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}

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/**

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* Indicates if known (non-guest) shoppers need to be logged in before we let

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* them access the order received page.

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*

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* @param bool $verify_known_shoppers If verification is required.

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*

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* @since 8.4.0

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*/

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$verify_known_shoppers = apply_filters( 'woocommerce_order_received_verify_known_shoppers', true );

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$order_customer_id = $order->get_customer_id();

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// For non-guest orders, require the user to be logged in before showing this page.

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if ( $verify_known_shoppers && $order_customer_id && get_current_user_id() !== $order_customer_id ) {

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wc_get_template( 'checkout/order-received.php', array( 'order' => false ) );

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wc_print_notice( esc_html__( 'Please log in to your account to view this order.', 'woocommerce' ), 'notice' );

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woocommerce_login_form( array( 'redirect' => $order->get_checkout_order_received_url() ) );

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return;

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}

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// For guest orders, request they verify their email address (unless we can identify them via the active user session).

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if ( self::guest_should_verify_email( $order, 'order-received' ) ) {

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wc_get_template( 'checkout/order-received.php', array( 'order' => false ) );

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wc_get_template(

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'checkout/form-verify-email.php',

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array(

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'failed_submission' => ! empty( $_POST['email'] ), // phpcs:ignore WordPress.Security.NonceVerification.Missing

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'verify_url' => $order->get_checkout_order_received_url(),

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)

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);

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return;

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}

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// Otherwise, display the thank you (order received) page.

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wc_get_template( 'checkout/thankyou.php', array( 'order' => $order ) );

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}

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/**

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* Show the checkout.

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*/

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private static function checkout() {

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// Show non-cart errors.

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do_action( 'woocommerce_before_checkout_form_cart_notices' );

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// Check cart has contents.

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if ( WC()->cart->is_empty() && ! is_customize_preview() && apply_filters( 'woocommerce_checkout_redirect_empty_cart', true ) ) {

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return;

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}

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// Check cart contents for errors.

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do_action( 'woocommerce_check_cart_items' );

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// Calc totals.

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WC()->cart->calculate_totals();

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// Get checkout object.

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$checkout = WC()->checkout();

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if ( empty( $_POST ) && wc_notice_count( 'error' ) > 0 ) { // WPCS: input var ok, CSRF ok.

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wc_get_template( 'checkout/cart-errors.php', array( 'checkout' => $checkout ) );

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wc_clear_notices();

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} else {

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$non_js_checkout = ! empty( $_POST['woocommerce_checkout_update_totals'] ); // WPCS: input var ok, CSRF ok.

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if ( wc_notice_count( 'error' ) === 0 && $non_js_checkout ) {

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wc_add_notice( __( 'The order totals have been updated. Please confirm your order by pressing the "Place order" button at the bottom of the page.', 'woocommerce' ) );

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}

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wc_get_template( 'checkout/form-checkout.php', array( 'checkout' => $checkout ) );

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}

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}

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/**

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* Tries to determine if the user's email address should be verified before rendering either the 'order received' or

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* 'order pay' pages. This should only be applied to guest orders.

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*

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* @param WC_Order $order The order for which a need for email verification is being determined.

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* @param string $context The context in which email verification is being tested.

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*

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* @return bool

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*/

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private static function guest_should_verify_email( WC_Order $order, string $context ): bool {

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// If we cannot match the order with the current user, ask that they verify their email address.

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$nonce_is_valid = wp_verify_nonce( filter_input( INPUT_POST, 'check_submission' ), 'wc_verify_email' );

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$supplied_email = null;

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$order_id = $order->get_id();

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if ( $nonce_is_valid ) {

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$supplied_email = sanitize_email( wp_unslash( filter_input( INPUT_POST, 'email' ) ) );

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}

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return Users::should_user_verify_order_email( $order_id, $supplied_email, $context );

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}

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}

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