Kyzoe · May 1, 2019 13:42
diff --git a/WooCommerce: Is this a gift + Validation + Email + Order Details b/WooCommerce: Is this a gift + Validation + Email + Order Details
 // add gift message on checkout after the "Order Notes"
 add_action( 'woocommerce_after_order_notes', 'bdev_is_this_a_gift' );
 function bdev_is_this_a_gift() {
    $domain = 'woocommerce';

    ?>
    <style>p#gift_field{display:none;}</style>
    <div id="message">
    <h3><i class="fa fa-gift"></i><?php _e( ' Is this a gift?', 'woocommerce' ); ?></h3>
    <?php

    woocommerce_form_field( 'gift_msg', array(
        'type'  => 'checkbox',
        'class' => array( 'gift-checkbox' ),
        'label' => __( 'To whom is this a gift?', 'woocommerce' ),
    ), WC()->checkout->get_value( 'cb_msg' ));

    woocommerce_form_field( 'gift', array(
        'type'              => 'text',
        'class'             => array('msg t_msg'),
        'label'             => __('Enter the recipient\'s e-mail address, nothing more. <a href="/privacy-policy" style="text-decoration: underline">More information here.</a>'),
        'placeholder'       => __('john.doe@example.com'),
    ), WC()->checkout->get_value( 'gift' ));

    echo '</div>';

    ?><script>
    jQuery(document).ready(function($) {
        var a = '#gift_field';
        $('input#gift_msg').change( function(){
            if( $(this).is(':checked') )
                $(a).show();
            else
                $(a).hide();
        });
    });
    </script><?php
 }

 // validate the gift field and display error
 add_action('woocommerce_after_checkout_validation', 'bdev_gift_validation', 20, 2 );
 function bdev_gift_validation( $data, $errors ) {
    // valide "Gift" not empty if selected
    if( isset($_POST['gift_msg']) && isset($_POST['gift']) && empty($_POST['gift']) )
        $errors->add( 'gift', __( "You've chosen to send this product as a gift, but did not submit a recipient email address.", "woocommerce" ) );

    // validate "Gift" input email different from billing email
    if ( isset($_POST['gift']) && $data['billing_email'] === $_POST['gift'] ) {
        $errors->add( 'gift', __( "You cannot send a product as a gift to yourself. That defeats the purpose of this being a gift, does it not?", "woocommerce" ) );
    }
 }

 // update the gift field
 add_action( 'woocommerce_checkout_update_order_meta', 'bdev_is_this_a_gift_save');
 function bdev_is_this_a_gift_save( $order_id ) {
    $gift_recipient_address = $_POST['gift'];
    if ( ! empty( $gift_recipient_address ) )
        update_post_meta( $order_id, 'gift', sanitize_text_field( $gift_recipient_address ) );
 }

 // show if gift on the order page
 add_action( 'woocommerce_admin_order_data_after_order_details', 'is_this_a_gift_order_display' );
 function is_this_a_gift_order_display( $order ) {
    if( $value = $order->get_meta('gift') ) :
        echo '<div class="order_data_column">
        <h3>' . __( '<br>Gift For:', 'woocommerce' ) . '</h3>
        <p>' . $value . '</p>
        </div>';
    endif;
 }

 // send to the gift receiver if provided
 add_filter( 'woocommerce_email_recipient_customer_completed_order', 'bdev_is_this_a_gift_replace_email_recipient', 10, 2 );
 function bdev_is_this_a_gift_replace_email_recipient( $recipient, $order ) {
    $gift_recipient = $order->get_meta('gift');
    if ( is_a( $order, 'WC_Order' ) && $order->get_meta('gift') ) 
        $recipient = $order->get_meta('gift');
    return $recipient;
 }

 // add text to gift reciever email
 add_action( 'woocommerce_email_before_order_table', 'bdev_this_was_a_gift', 20, 4 );
 function bdev_this_was_a_gift( $order, $sent_to_admin, $plain_text, $email ) {
 if ( $email->id == 'customer_completed_order'  && $order->get_meta('gift') == true ) {
 echo '<h2 class="gift-h">Happy Days! You Got A GIFT!</h2><p class="gift-p">Your text here followed by "<strong>HAPPYCODE</strong>" and some more text at the end.</p>'; } }
	// add gift message on checkout after the "Order Notes"
	add_action( 'woocommerce_after_order_notes', 'bdev_is_this_a_gift' );
	function bdev_is_this_a_gift() {
	$domain = 'woocommerce';

	?>
	<style>p#gift_field{display:none;}</style>
	<div id="message">
	<h3><i class="fa fa-gift"></i><?php _e( ' Is this a gift?', 'woocommerce' ); ?></h3>
	<?php

	woocommerce_form_field( 'gift_msg', array(
	'type' => 'checkbox',
	'class' => array( 'gift-checkbox' ),
	'label' => __( 'To whom is this a gift?', 'woocommerce' ),
	), WC()->checkout->get_value( 'cb_msg' ));

	woocommerce_form_field( 'gift', array(
	'type' => 'text',
	'class' => array('msg t_msg'),
	'label' => __('Enter the recipient\'s e-mail address, nothing more. <a href="/privacy-policy" style="text-decoration: underline">More information here.</a>'),
	'placeholder' => __('john.doe@example.com'),
	), WC()->checkout->get_value( 'gift' ));

	echo '</div>';

	?><script>
	jQuery(document).ready(function($) {
	var a = '#gift_field';
	$('input#gift_msg').change( function(){
	if( $(this).is(':checked') )
	$(a).show();
	else
	$(a).hide();
	});
	});
	</script><?php
	}

	// validate the gift field and display error
	add_action('woocommerce_after_checkout_validation', 'bdev_gift_validation', 20, 2 );
	function bdev_gift_validation( $data, $errors ) {
	// valide "Gift" not empty if selected
	if( isset($_POST['gift_msg']) && isset($_POST['gift']) && empty($_POST['gift']) )
	$errors->add( 'gift', __( "You've chosen to send this product as a gift, but did not submit a recipient email address.", "woocommerce" ) );

	// validate "Gift" input email different from billing email
	if ( isset($_POST['gift']) && $data['billing_email'] === $_POST['gift'] ) {
	$errors->add( 'gift', __( "You cannot send a product as a gift to yourself. That defeats the purpose of this being a gift, does it not?", "woocommerce" ) );
	}
	}

	// update the gift field
	add_action( 'woocommerce_checkout_update_order_meta', 'bdev_is_this_a_gift_save');
	function bdev_is_this_a_gift_save( $order_id ) {
	$gift_recipient_address = $_POST['gift'];
	if ( ! empty( $gift_recipient_address ) )
	update_post_meta( $order_id, 'gift', sanitize_text_field( $gift_recipient_address ) );
	}

	// show if gift on the order page
	add_action( 'woocommerce_admin_order_data_after_order_details', 'is_this_a_gift_order_display' );
	function is_this_a_gift_order_display( $order ) {
	if( $value = $order->get_meta('gift') ) :
	echo '<div class="order_data_column">
	<h3>' . __( '<br>Gift For:', 'woocommerce' ) . '</h3>
	<p>' . $value . '</p>
	</div>';
	endif;
	}

	// send to the gift receiver if provided
	add_filter( 'woocommerce_email_recipient_customer_completed_order', 'bdev_is_this_a_gift_replace_email_recipient', 10, 2 );
	function bdev_is_this_a_gift_replace_email_recipient( $recipient, $order ) {
	$gift_recipient = $order->get_meta('gift');
	if ( is_a( $order, 'WC_Order' ) && $order->get_meta('gift') )
	$recipient = $order->get_meta('gift');
	return $recipient;
	}

	// add text to gift reciever email
	add_action( 'woocommerce_email_before_order_table', 'bdev_this_was_a_gift', 20, 4 );
	function bdev_this_was_a_gift( $order, $sent_to_admin, $plain_text, $email ) {
	if ( $email->id == 'customer_completed_order' && $order->get_meta('gift') == true ) {
	echo '<h2 class="gift-h">Happy Days! You Got A GIFT!</h2><p class="gift-p">Your text here followed by "<strong>HAPPYCODE</strong>" and some more text at the end.</p>'; } }