damiencarbery · July 8, 2026 19:26
diff --git a/SAB-design.php b/SAB-design.php
 <?php
 /*
 Plugin Name: Sourdough and Beyond redesign
 Plugin URI: https://www.damiencarbery.com
 Description: Customisations and experiments for Sourdough and Beyond redesign.
 Author: Damien Carbery
 Version: 0.1.20260703
 Requires Plugins: cmb2, woocommerce
 */


 defined( 'ABSPATH' ) || exit;


 class SourdoughAndBeyond {
 	// The single instance of the class.
 	public static $instance = null;

 	// The number of delivery dates to render.
 	private $max_delivery_days;


 	// Returns an instance of this class. 
 	public static function instance() {
 		if ( null == self::$instance ) {
 			self::$instance = new self;
 		} 
 		return self::$instance;
 	}


 	// Initialize the plugin variables.
 	public function __construct() {
 		// Initialise the default number of delivery dates to render.
 		$this->max_delivery_days = 4;  // 

 		$this->init();
 	}


 	// Set up WordPress specfic actions.
 	public function init() {
 		// Register the PHP-only Delivery Dates block.
 		add_action( 'init', array( $this, 'register_delivery_dates_block' ) );

 		// Load the DateTimePicker CSS and JS on the checkout page.
 		add_action( 'wp_enqueue_scripts', array( $this, 'datetimepicker_assets_on_checkout' ) );

 		// Enqueue the CSS to display the block output correctly in the editor.
 // ToDo: This does not appear to be working.
 		add_action( 'enqueue_block_editor_assets', array( $this, 'enqueue_block_editor_css' ) );

 		// Make a shortcode version of the block available.
 		add_shortcode( 'show_delivery_dates', array( $this, 'show_delivery_dates_checkboxes' ) );

 		// Add the "2. Add your favourites" text before the Easy Tabs buttons.
 		add_filter( 'render_block', array( $this, 'add_text_before_easy_tabs_buttons' ), 10, 2 );

 		// Remove some 'Easy Tabs Block' styles to make it easier to add custom styles.
 		add_action( 'wp_footer', array( $this, 'remove_etb_styles' ), 1 );

 		// Optional: Add the Delivery Dates checkboxes to the Shop page.
 		add_action( 'woocommerce_before_shop_loop', array( $this, 'show_delivery_dates_checkboxes' ), 25 );

 		// Optional: Add the Delivery Dates checkboxes to the single product page.
 		add_action( 'woocommerce_single_product_summary', array( $this, 'show_delivery_dates_checkboxes' ), 25 );

 		// Optional: Add delivery days to the single product page.
 		add_action( 'woocommerce_single_product_summary', array( $this, 'template_single_display_days' ), 40 );

 		// Verify that the products in the cart can be delivered on the selected day.
 		add_action( 'woocommerce_after_checkout_validation', array( $this, 'verify_cart_contents_and_delivery_day' ), 10, 2 ); 

 //		// This did not work because it does not have access to WC()->cart().
 //		add_filter( 'rest_authentication_errors', array( $this, 'rest_verify_cart_contents_and_delivery_day' ) );
 	}


 	// Check whether the current page is a checkout page.
 	// From: https://wordpress.org/plugins/delivery-date-time-slot-picker-for-woocommerce
 	private function is_checkout_page() {
 		if ( function_exists( 'is_checkout' ) && is_checkout() ) {
 			return true;
 		}

 		if ( is_singular() ) {
 			return has_block( 'woocommerce/checkout', get_the_ID() );
 		}

 		return false;
 	}


 	public function register_delivery_dates_block() {
 		wp_register_style( 'sab-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
 		register_block_type(
 			'sab/delivery-dates',
 			array(
 				'title'           => 'S&B Delivery Dates',
 				'attributes' => array(
 					'dates_to_render' => array(
 						'type'    => 'string',
 						'enum'    => array( '1', '2', '3', '4', '5', '6', '7', '8' ),
 						'default' => $this->max_delivery_days,
 						'label'   => 'Number of dates to show (recommend 4)',
 					),
 				),
 				'render_callback' => array( $this, 'delivery_dates_checkboxes_block' ),
 				'supports'        => array(
 					'autoRegister' => true,
 				),
 			)
 		);
 	}


 	// Load the DateTimePicker CSS and JS on the checkout page.
 	public function datetimepicker_assets_on_checkout() {
 		if ( $this->is_checkout_page() ) {
 			wp_enqueue_style( 'sourdough-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
 			wp_enqueue_style( 'jquery-ui-pepper-grinder', 'https://ajax.googleapis.com/ajax/libs/jqueryui/1.14.1/themes/pepper-grinder/jquery-ui.css' );
 			wp_enqueue_script( 'jquery-ui-datepicker' );

 			// Configure and handle the jQuery DatePicker.
 			wp_enqueue_script( 'sab-datepicker', plugins_url( 'js/sab-checkout-datepicker.js', __FILE__ ), array( 'jquery-ui-datepicker' ) );

 			// Make the list of excluded dates available to the script.
 			$excluded_dates = get_option( 'delivery_dates' );
 			if ( array_key_exists( 'dates', $excluded_dates ) ) {
 				$excluded_dates = $excluded_dates['dates'];
 			}

 			// Examine the cart and create a list of product IDs, names and categories.
 			$products = array();
 			foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
 				$product = $cart_item['data'];
 				$product_cats = get_the_terms( $product->get_id(), 'product_cat' );
 				$product_cat_names = array();
 				foreach ( $product_cats as $cat ) {
 					$product_cat_names[] = $cat->name;
 				}
 				$products[] = array( 'id' => $product->get_id(), 'name' => $product->get_name(), 'categories' => implode( ', ', $product_cat_names ) );
 			}
 			//error_log( 'Cart items: ' . var_export( $products, true ) );

 			wp_add_inline_script( 'sab-datepicker', 'const blockedOutDates = ' . json_encode( $excluded_dates ) . ";\nconst cart_contents = " . json_encode( $products ) );
 		}
 	}


 	// Enqueue the CSS to display the block output correctly in the editor.
 	// ToDo: This does not appear to be working.
 	public function enqueue_block_editor_css() {
 		wp_enqueue_style( 'sourdough-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
 	}


 	// Create a clickable list of future delivery dates.
 	public function delivery_dates_checkboxes_block( $attributes ) {
 		$valid_days = array( 4, 5, 6, 7 );  // 1 (for Monday) through 7 (for Sunday)

 		// Change $max_delivery_days if block setting has a value.
 		if ( isset( $attributes['dates_to_render'] ) && intval( $attributes['dates_to_render'] ) > 0 ) {
 			$this->max_delivery_days = intval( $attributes['dates_to_render'] );
 		}

 		$delivery_dates = array();
 		// 2 day lead time so start our list there.
 		$delivery_date = DateTime::createFromFormat( 'U', (string) time() + ( 2 * DAY_IN_SECONDS ) );

 		// Get list of excluded dates (CMB2 code) and move the subarray up a level.
 		$excluded_dates = get_option( 'delivery_dates' );
 		//error_log( 'excluded_dates:' . var_export( $excluded_dates, true ) );
 		if ( array_key_exists( 'dates', $excluded_dates ) ) {
 			$excluded_dates = $excluded_dates['dates'];
 		}
 		//error_log( 'excluded_dates:' . var_export( $excluded_dates, true ) );

 		do {
 			// Get delivery date in format that matches those in $excluded_dates. Date and month do not have leading zeros, to simplify working with Javascript Date object.
 			$exclude_format = sprintf( '%s-%s-%s', $delivery_date->format( 'j' ), $delivery_date->format( 'n' ), $delivery_date->format( 'Y' ) );

 			// If it is a valid delivery day of the week then store it.
 			if ( in_array( $delivery_date->format( 'N' ), $valid_days ) && !in_array( $exclude_format, $excluded_dates )  ) {
 				// For the data-delivery-day-name attribute.
 				$day_name = strtolower( $delivery_date->format( 'l' ) );  // monday, tuesday etc.
 				// The <label for=""> attribute e.g. radio_delivery-monday-21.
 				$label_for = sprintf( '%s-%d', $day_name, $delivery_date->format( 'd' ) );  // e.g. monday-21

 				// The <label> text is like 'Mon<br>June 22'.
 				$abbrev_day_name = $delivery_date->format( 'D' );  // Mon, Tues etc.
 				$month_date = $delivery_date->format( 'F j' );  // e.g. June 22
 				// ToDo: What if date or month are less than 10?? The JS will need to match the format.
 				$stored_date = sprintf( '%s-%s-%s', $delivery_date->format( 'Y' ), $delivery_date->format( 'm' ), $delivery_date->format( 'd' ) );

 				$checked = '';
 				if ( ! count( $delivery_dates ) ) {
 					$checked = 'checked="checked"';
 				}
 				$delivery_dates[] = sprintf( '<input type="radio" name="delivery-date" id="radio_delivery-%s" %s>' .
 											 '<label data-delivery-day-name="%s" data-stored-date="%s" for="radio_delivery-%s" class="delivery-%s"><span class="day_name">%s</span><br>%s</label>',
 											  $label_for, $checked, $day_name, $stored_date, $label_for, $day_name, $abbrev_day_name, $month_date );
 			}
 			// Move on one day.
 			$delivery_date = $delivery_date->add( DateInterval::createFromDateString( '1 day' ) );
 		} while ( count( $delivery_dates ) < $this->max_delivery_days );

 		// Enqueue the CSS and JS instead of using has_block() or has_shortcode() first.
 		//wp_enqueue_style( 'sab-delivery-dates',  plugins_url( 'sab-delivery-dates.css', __FILE__ ) );
 		wp_enqueue_style( 'sab-delivery-dates' );
 		wp_enqueue_script( 'sab-delivery-dates',  plugins_url( 'js/sab-delivery-dates.js', __FILE__ ) );

 		$output = '<div class="delivery_dates">' . implode( "\n", $delivery_dates ) . '</div>';

 		return $output;
 	}


 	// Shortcode function to display the Delivery Dates checkboxes block markup.
 	public function show_delivery_dates_checkboxes() {
 		echo '<div class="delivery_dates_shortcode"><p><strong>Choose your delivery day</strong></p>' . $this->delivery_dates_checkboxes_block( array() ) . '<p><small>ToDo: Disable "Add to cart" button if not selling item on chosen day.</small></p></div>';
 	}


 	// Add the "2. Add your favourites" text before the Easy Tabs buttons.
 	public function add_text_before_easy_tabs_buttons( $block_content, $block ) {
 		if ( isset( $block['blockName'] ) && 'easy-tabs-block/tab-buttons' === $block['blockName'] ) {
 			//error_log( var_export( $block_content, true ) );
 			return str_replace( 'role="tablist">', 'role="tablist"><p class="prompt">2. Add your favourites</p>', $block_content );
 		}

 		return $block_content;
 	}


 	// Remove some 'Easy Tabs Block' styles to make it easier to add custom styles.
 	public function remove_etb_styles() {
 		wp_dequeue_style('easy-tabs-block-tab-button-style');
 		//wp_dequeue_style('easy-tabs-block-tab-buttons-style');
 		//wp_dequeue_style('easy-tabs-block-tab-content-style');
 		//wp_dequeue_style('easy-tabs-block-tab-contents-style');
 		//wp_dequeue_style('easy-tabs-block-tabs-style'); // Cannot remove as it creates tab functionality.
 		//wp_dequeue_style('easy-tabs-block-tabs-style');
 	}


 	// Add delivery days to the single product page.
 	public function template_single_display_days() {
 		global $product;

 		$product_cats = get_the_terms( $product->get_id(), 'product_cat' );
 		// Map the category slugs to day of week number (for later sorting).
 		// The values must match the order in the $dow_to_name array.
 		$cat_to_dow = array( 'delivery-monday' => 0, 'delivery-tuesday' => 1, 'delivery-wednesday' => 2, 'delivery-thursday' => 3,
 							 'delivery-friday' => 4, 'delivery-saturday' => 5, 'delivery-sunday' => 6  );
 		$dow_to_name = array( 'Mondays', 'Tuesdays', 'Wednesdays', 'Thursdays', 'Fridays', 'Saturdays', 'Sundays' );
 		$delivery_dows = array();

 		// Get the day of week number for each category.
 		foreach ( $product_cats as $cat ) {
 			if ( isset( $cat_to_dow[ $cat->slug ] ) ) {
 				$delivery_dows[] = $cat_to_dow[ $cat->slug ];
 			}
 		}
 		if ( ! empty( $delivery_dows ) ) {
 			if ( count( $delivery_dows ) < 7) {
 				$delivery_days = array();
 				sort( $delivery_dows );  // Sort the array values.
 				// And convert the numeric values back to day names.
 				foreach ( $delivery_dows as $dow ) {
 					$delivery_days[] = '<strong>' . $dow_to_name[ $dow ] . '</strong>';
 				}
 				echo '<p class="deliver_on_days">This item can be delivered on ', implode( ', ', $delivery_days ), '.</p>';
 			}
 		}
 		else {
 			if ( is_user_logged_in() ) {
 				echo '<p class="deliver_on_days">ADMIN NOTE: Delivery day categories are not set for this product.</p>';
 			}
 		}
 	}


 	// Verify that the products in the cart can be delivered on the selected day.
 	public function verify_cart_contents_and_delivery_day( $fields, $errors ) {
 		//error_log( '$fields:' . var_export( $fields, true ) );

 		if ( preg_match( '/\\S/', $fields[ 'billing_first_name' ] ) || preg_match( '/\\S/', $fields[ 'billing_last_name' ] ) ) {
 			$errors->add( 'validation', 'Your first or last name contains a letter.' );
 		}
    }


 /*	public function rest_verify_cart_contents_and_delivery_day( $result ) {
 		// Skip if this is not a POST request.
 		if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] !== 'POST' ) {
 			// Always return the result or an error, never a boolean. This ensures other checks aren't thrown away like rate limiting or authentication.
 			return $result;
 		}

 		// Skip if this is not the checkout endpoint.
 		if ( ! preg_match( '#/wc/store(?:/v\d+)?/checkout#', $GLOBALS['wp']->query_vars['rest_route'] ) ) {
 			return $result;
 		}

 error_log( 'REST route: ' . $GLOBALS['wp']->query_vars['rest_route'] );

 		// get request body
 		$request_body = json_decode( \WP_REST_Server::get_raw_data(), true );
 error_log( '$request_body: ' . var_export( $request_body, true ) );

 	$products = array();
 	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
 		$product = $cart_item['data'];
 		$products[] = $product->get_name() . ': ' . implode( ', ', $product->get_category_ids() );
 	}
 	error_log( 'Cart items: ' . var_export( $products, true ) );

 		return new WP_Error( 'verify_cart_failed', 'Verify cart failed.' );

 		if ( isset( $request_body['payment_method'] ) ) {
 			$chosen_payment_method = sanitize_text_field(  $request_body['payment_method'] );

 			// Provide ability to short circuit the check to allow express payments or hosted checkouts to bypass the check.
 			$selected_payment_methods = apply_filters(  'plugin_payment_methods_to_skip', array('woocommerce_payments' ) );
 			if( is_array( $selected_payment_methods ) ) {
 				if ( in_array( $chosen_payment_method, $selected_payment_methods, true ) ) {
 					return $result;
 				}
 			}
 		}

 		$extensions = $request_body['extensions'];
 		if ( empty( $extensions ) || ! isset( $extensions['plugin-namespace-turnstile'] ) ) {
 			return new WP_Error( 'challenge_failed', 'Captcha challenge failed' );
 		}
 		$token = sanitize_text_field( $extensions['plugin-namespace-turnstile']['token'] );

 		// Note: The function `my_token_check_function` would be implemented in your plugin to handle token validation.
 		$check = my_token_check_function( $token );
 		$success = $check['success'];

 		if( $success !== true ) {
 			return new WP_Error( 'challenge_failed', 'Captcha challenge failed' );
 		}

 		return $result;
 	}*/
 }
 $SourdoughAndBeyond = new SourdoughAndBeyond();


 // This code is for a text field in the Additional order information area.
 add_action( 'woocommerce_init', 'cbt_delivery_date_order_field' );
 function cbt_delivery_date_order_field() {
 	woocommerce_register_additional_checkout_field(
 		array(
 			// id, label and location are required.
 			'id'            => 'sab/delivery-date',
 			'label'         => 'Delivery Date',  // Label when field is required.
 			'location'      => 'order',  // order, address, contact. For address it will show in Shipping *and* Billing sections.

 			'required'      => true,
 			'placeholder'  => /*'What day would you like us to deliver your order?*/'Deliveries are between 7:30am and 10:30am Thursday to Sunday',

 			'type'          => 'text',
 			'attributes'    => array(
 				'autocomplete' => 'off'

        // To help users on mobile devices you can turn on autocomplete assistance and autocapitalisation.
        //'autocomplete'     => 'given-name', // email, given-name, family-name, country, organization, address-line1, address-line2, address-level1, address-level2, postal-code, tel. https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/autocomplete#values
 				//'autocapitalize'   => 'on', // off, on, none, sentences, words, characters. This only applies on mobile devices.

        // The aria attributes can be used for accessibility.
        //'aria-describedby' => 'some-element',  // Accessibility setting.
 				//'aria-label'       => 'custom aria label',  // Accessibility setting.

        // The custom data can be added for JavaScript use.
        //'data-custom'      => 'custom data',  // Custom attribute for custom JS use.
      ),
 			//'validate_callback'    => 'cbt_second_email_validation_callback',
 			//'sanitize_callback'    => 'cbt_second_email_sanitization_callback',  // Optional function to santize field value.
 		),
 	);
 }


 // Validate the Second email field to ensure it is an email address and return a message on error.
 function cbt_second_email_validation_callback( $value, $field ) {
 	if ( ! is_email( $value ) ) {
 		// Use different label if field is not required.
 		$field_name = $field['required'] ? $field['label'] : $field['optionalLabel'];

 		return new WP_Error( 'invalid_second_email', sprintf( 'The "%s" field must be an email address.', $field_name ) );
 	}
 }
	<?php
	/*
	Plugin Name: Sourdough and Beyond redesign
	Plugin URI: https://www.damiencarbery.com
	Description: Customisations and experiments for Sourdough and Beyond redesign.
	Author: Damien Carbery
	Version: 0.1.20260703
	Requires Plugins: cmb2, woocommerce
	*/


	defined( 'ABSPATH' ) \|\| exit;


	class SourdoughAndBeyond {
	// The single instance of the class.
	public static $instance = null;

	// The number of delivery dates to render.
	private $max_delivery_days;


	// Returns an instance of this class.
	public static function instance() {
	if ( null == self::$instance ) {
	self::$instance = new self;
	}
	return self::$instance;
	}


	// Initialize the plugin variables.
	public function __construct() {
	// Initialise the default number of delivery dates to render.
	$this->max_delivery_days = 4; //

	$this->init();
	}


	// Set up WordPress specfic actions.
	public function init() {
	// Register the PHP-only Delivery Dates block.
	add_action( 'init', array( $this, 'register_delivery_dates_block' ) );

	// Load the DateTimePicker CSS and JS on the checkout page.
	add_action( 'wp_enqueue_scripts', array( $this, 'datetimepicker_assets_on_checkout' ) );

	// Enqueue the CSS to display the block output correctly in the editor.
	// ToDo: This does not appear to be working.
	add_action( 'enqueue_block_editor_assets', array( $this, 'enqueue_block_editor_css' ) );

	// Make a shortcode version of the block available.
	add_shortcode( 'show_delivery_dates', array( $this, 'show_delivery_dates_checkboxes' ) );

	// Add the "2. Add your favourites" text before the Easy Tabs buttons.
	add_filter( 'render_block', array( $this, 'add_text_before_easy_tabs_buttons' ), 10, 2 );

	// Remove some 'Easy Tabs Block' styles to make it easier to add custom styles.
	add_action( 'wp_footer', array( $this, 'remove_etb_styles' ), 1 );

	// Optional: Add the Delivery Dates checkboxes to the Shop page.
	add_action( 'woocommerce_before_shop_loop', array( $this, 'show_delivery_dates_checkboxes' ), 25 );

	// Optional: Add the Delivery Dates checkboxes to the single product page.
	add_action( 'woocommerce_single_product_summary', array( $this, 'show_delivery_dates_checkboxes' ), 25 );

	// Optional: Add delivery days to the single product page.
	add_action( 'woocommerce_single_product_summary', array( $this, 'template_single_display_days' ), 40 );

	// Verify that the products in the cart can be delivered on the selected day.
	add_action( 'woocommerce_after_checkout_validation', array( $this, 'verify_cart_contents_and_delivery_day' ), 10, 2 );

	// // This did not work because it does not have access to WC()->cart().
	// add_filter( 'rest_authentication_errors', array( $this, 'rest_verify_cart_contents_and_delivery_day' ) );
	}


	// Check whether the current page is a checkout page.
	// From: https://wordpress.org/plugins/delivery-date-time-slot-picker-for-woocommerce
	private function is_checkout_page() {
	if ( function_exists( 'is_checkout' ) && is_checkout() ) {
	return true;
	}

	if ( is_singular() ) {
	return has_block( 'woocommerce/checkout', get_the_ID() );
	}

	return false;
	}


	public function register_delivery_dates_block() {
	wp_register_style( 'sab-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
	register_block_type(
	'sab/delivery-dates',
	array(
	'title' => 'S&B Delivery Dates',
	'attributes' => array(
	'dates_to_render' => array(
	'type' => 'string',
	'enum' => array( '1', '2', '3', '4', '5', '6', '7', '8' ),
	'default' => $this->max_delivery_days,
	'label' => 'Number of dates to show (recommend 4)',
	),
	),
	'render_callback' => array( $this, 'delivery_dates_checkboxes_block' ),
	'supports' => array(
	'autoRegister' => true,
	),
	)
	);
	}


	// Load the DateTimePicker CSS and JS on the checkout page.
	public function datetimepicker_assets_on_checkout() {
	if ( $this->is_checkout_page() ) {
	wp_enqueue_style( 'sourdough-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
	wp_enqueue_style( 'jquery-ui-pepper-grinder', 'https://ajax.googleapis.com/ajax/libs/jqueryui/1.14.1/themes/pepper-grinder/jquery-ui.css' );
	wp_enqueue_script( 'jquery-ui-datepicker' );

	// Configure and handle the jQuery DatePicker.
	wp_enqueue_script( 'sab-datepicker', plugins_url( 'js/sab-checkout-datepicker.js', __FILE__ ), array( 'jquery-ui-datepicker' ) );

	// Make the list of excluded dates available to the script.
	$excluded_dates = get_option( 'delivery_dates' );
	if ( array_key_exists( 'dates', $excluded_dates ) ) {
	$excluded_dates = $excluded_dates['dates'];
	}

	// Examine the cart and create a list of product IDs, names and categories.
	$products = array();
	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
	$product = $cart_item['data'];
	$product_cats = get_the_terms( $product->get_id(), 'product_cat' );
	$product_cat_names = array();
	foreach ( $product_cats as $cat ) {
	$product_cat_names[] = $cat->name;
	}
	$products[] = array( 'id' => $product->get_id(), 'name' => $product->get_name(), 'categories' => implode( ', ', $product_cat_names ) );
	}
	//error_log( 'Cart items: ' . var_export( $products, true ) );

	wp_add_inline_script( 'sab-datepicker', 'const blockedOutDates = ' . json_encode( $excluded_dates ) . ";\nconst cart_contents = " . json_encode( $products ) );
	}
	}


	// Enqueue the CSS to display the block output correctly in the editor.
	// ToDo: This does not appear to be working.
	public function enqueue_block_editor_css() {
	wp_enqueue_style( 'sourdough-delivery-dates', plugins_url( 'css/sab-delivery-dates.css', __FILE__ ), array() );
	}


	// Create a clickable list of future delivery dates.
	public function delivery_dates_checkboxes_block( $attributes ) {
	$valid_days = array( 4, 5, 6, 7 ); // 1 (for Monday) through 7 (for Sunday)

	// Change $max_delivery_days if block setting has a value.
	if ( isset( $attributes['dates_to_render'] ) && intval( $attributes['dates_to_render'] ) > 0 ) {
	$this->max_delivery_days = intval( $attributes['dates_to_render'] );
	}

	$delivery_dates = array();
	// 2 day lead time so start our list there.
	$delivery_date = DateTime::createFromFormat( 'U', (string) time() + ( 2 * DAY_IN_SECONDS ) );

	// Get list of excluded dates (CMB2 code) and move the subarray up a level.
	$excluded_dates = get_option( 'delivery_dates' );
	//error_log( 'excluded_dates:' . var_export( $excluded_dates, true ) );
	if ( array_key_exists( 'dates', $excluded_dates ) ) {
	$excluded_dates = $excluded_dates['dates'];
	}
	//error_log( 'excluded_dates:' . var_export( $excluded_dates, true ) );

	do {
	// Get delivery date in format that matches those in $excluded_dates. Date and month do not have leading zeros, to simplify working with Javascript Date object.
	$exclude_format = sprintf( '%s-%s-%s', $delivery_date->format( 'j' ), $delivery_date->format( 'n' ), $delivery_date->format( 'Y' ) );

	// If it is a valid delivery day of the week then store it.
	if ( in_array( $delivery_date->format( 'N' ), $valid_days ) && !in_array( $exclude_format, $excluded_dates ) ) {
	// For the data-delivery-day-name attribute.
	$day_name = strtolower( $delivery_date->format( 'l' ) ); // monday, tuesday etc.
	// The <label for=""> attribute e.g. radio_delivery-monday-21.
	$label_for = sprintf( '%s-%d', $day_name, $delivery_date->format( 'd' ) ); // e.g. monday-21

	// The <label> text is like 'Mon<br>June 22'.
	$abbrev_day_name = $delivery_date->format( 'D' ); // Mon, Tues etc.
	$month_date = $delivery_date->format( 'F j' ); // e.g. June 22
	// ToDo: What if date or month are less than 10?? The JS will need to match the format.
	$stored_date = sprintf( '%s-%s-%s', $delivery_date->format( 'Y' ), $delivery_date->format( 'm' ), $delivery_date->format( 'd' ) );

	$checked = '';
	if ( ! count( $delivery_dates ) ) {
	$checked = 'checked="checked"';
	}
	$delivery_dates[] = sprintf( '<input type="radio" name="delivery-date" id="radio_delivery-%s" %s>' .
	'<label data-delivery-day-name="%s" data-stored-date="%s" for="radio_delivery-%s" class="delivery-%s"><span class="day_name">%s</span><br>%s</label>',
	$label_for, $checked, $day_name, $stored_date, $label_for, $day_name, $abbrev_day_name, $month_date );
	}
	// Move on one day.
	$delivery_date = $delivery_date->add( DateInterval::createFromDateString( '1 day' ) );
	} while ( count( $delivery_dates ) < $this->max_delivery_days );

	// Enqueue the CSS and JS instead of using has_block() or has_shortcode() first.
	//wp_enqueue_style( 'sab-delivery-dates', plugins_url( 'sab-delivery-dates.css', __FILE__ ) );
	wp_enqueue_style( 'sab-delivery-dates' );
	wp_enqueue_script( 'sab-delivery-dates', plugins_url( 'js/sab-delivery-dates.js', __FILE__ ) );

	$output = '<div class="delivery_dates">' . implode( "\n", $delivery_dates ) . '</div>';

	return $output;
	}


	// Shortcode function to display the Delivery Dates checkboxes block markup.
	public function show_delivery_dates_checkboxes() {
	echo '<div class="delivery_dates_shortcode"><p><strong>Choose your delivery day</strong></p>' . $this->delivery_dates_checkboxes_block( array() ) . '<p><small>ToDo: Disable "Add to cart" button if not selling item on chosen day.</small></p></div>';
	}


	// Add the "2. Add your favourites" text before the Easy Tabs buttons.
	public function add_text_before_easy_tabs_buttons( $block_content, $block ) {
	if ( isset( $block['blockName'] ) && 'easy-tabs-block/tab-buttons' === $block['blockName'] ) {
	//error_log( var_export( $block_content, true ) );
	return str_replace( 'role="tablist">', 'role="tablist"><p class="prompt">2. Add your favourites</p>', $block_content );
	}

	return $block_content;
	}


	// Remove some 'Easy Tabs Block' styles to make it easier to add custom styles.
	public function remove_etb_styles() {
	wp_dequeue_style('easy-tabs-block-tab-button-style');
	//wp_dequeue_style('easy-tabs-block-tab-buttons-style');
	//wp_dequeue_style('easy-tabs-block-tab-content-style');
	//wp_dequeue_style('easy-tabs-block-tab-contents-style');
	//wp_dequeue_style('easy-tabs-block-tabs-style'); // Cannot remove as it creates tab functionality.
	//wp_dequeue_style('easy-tabs-block-tabs-style');
	}


	// Add delivery days to the single product page.
	public function template_single_display_days() {
	global $product;

	$product_cats = get_the_terms( $product->get_id(), 'product_cat' );
	// Map the category slugs to day of week number (for later sorting).
	// The values must match the order in the $dow_to_name array.
	$cat_to_dow = array( 'delivery-monday' => 0, 'delivery-tuesday' => 1, 'delivery-wednesday' => 2, 'delivery-thursday' => 3,
	'delivery-friday' => 4, 'delivery-saturday' => 5, 'delivery-sunday' => 6 );
	$dow_to_name = array( 'Mondays', 'Tuesdays', 'Wednesdays', 'Thursdays', 'Fridays', 'Saturdays', 'Sundays' );
	$delivery_dows = array();

	// Get the day of week number for each category.
	foreach ( $product_cats as $cat ) {
	if ( isset( $cat_to_dow[ $cat->slug ] ) ) {
	$delivery_dows[] = $cat_to_dow[ $cat->slug ];
	}
	}
	if ( ! empty( $delivery_dows ) ) {
	if ( count( $delivery_dows ) < 7) {
	$delivery_days = array();
	sort( $delivery_dows ); // Sort the array values.
	// And convert the numeric values back to day names.
	foreach ( $delivery_dows as $dow ) {
	$delivery_days[] = '<strong>' . $dow_to_name[ $dow ] . '</strong>';
	}
	echo '<p class="deliver_on_days">This item can be delivered on ', implode( ', ', $delivery_days ), '.</p>';
	}
	}
	else {
	if ( is_user_logged_in() ) {
	echo '<p class="deliver_on_days">ADMIN NOTE: Delivery day categories are not set for this product.</p>';
	}
	}
	}


	// Verify that the products in the cart can be delivered on the selected day.
	public function verify_cart_contents_and_delivery_day( $fields, $errors ) {
	//error_log( '$fields:' . var_export( $fields, true ) );

	if ( preg_match( '/\\S/', $fields[ 'billing_first_name' ] ) \|\| preg_match( '/\\S/', $fields[ 'billing_last_name' ] ) ) {
	$errors->add( 'validation', 'Your first or last name contains a letter.' );
	}
	}


	/* public function rest_verify_cart_contents_and_delivery_day( $result ) {
	// Skip if this is not a POST request.
	if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] !== 'POST' ) {
	// Always return the result or an error, never a boolean. This ensures other checks aren't thrown away like rate limiting or authentication.
	return $result;
	}

	// Skip if this is not the checkout endpoint.
	if ( ! preg_match( '#/wc/store(?:/v\d+)?/checkout#', $GLOBALS['wp']->query_vars['rest_route'] ) ) {
	return $result;
	}

	error_log( 'REST route: ' . $GLOBALS['wp']->query_vars['rest_route'] );

	// get request body
	$request_body = json_decode( \WP_REST_Server::get_raw_data(), true );
	error_log( '$request_body: ' . var_export( $request_body, true ) );

	$products = array();
	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
	$product = $cart_item['data'];
	$products[] = $product->get_name() . ': ' . implode( ', ', $product->get_category_ids() );
	}
	error_log( 'Cart items: ' . var_export( $products, true ) );

	return new WP_Error( 'verify_cart_failed', 'Verify cart failed.' );

	if ( isset( $request_body['payment_method'] ) ) {
	$chosen_payment_method = sanitize_text_field( $request_body['payment_method'] );

	// Provide ability to short circuit the check to allow express payments or hosted checkouts to bypass the check.
	$selected_payment_methods = apply_filters( 'plugin_payment_methods_to_skip', array('woocommerce_payments' ) );
	if( is_array( $selected_payment_methods ) ) {
	if ( in_array( $chosen_payment_method, $selected_payment_methods, true ) ) {
	return $result;
	}
	}
	}

	$extensions = $request_body['extensions'];
	if ( empty( $extensions ) \|\| ! isset( $extensions['plugin-namespace-turnstile'] ) ) {
	return new WP_Error( 'challenge_failed', 'Captcha challenge failed' );
	}
	$token = sanitize_text_field( $extensions['plugin-namespace-turnstile']['token'] );

	// Note: The function `my_token_check_function` would be implemented in your plugin to handle token validation.
	$check = my_token_check_function( $token );
	$success = $check['success'];

	if( $success !== true ) {
	return new WP_Error( 'challenge_failed', 'Captcha challenge failed' );
	}

	return $result;
	}*/
	}
	$SourdoughAndBeyond = new SourdoughAndBeyond();


	// This code is for a text field in the Additional order information area.
	add_action( 'woocommerce_init', 'cbt_delivery_date_order_field' );
	function cbt_delivery_date_order_field() {
	woocommerce_register_additional_checkout_field(
	array(
	// id, label and location are required.
	'id' => 'sab/delivery-date',
	'label' => 'Delivery Date', // Label when field is required.
	'location' => 'order', // order, address, contact. For address it will show in Shipping and Billing sections.

	'required' => true,
	'placeholder' => /'What day would you like us to deliver your order?/'Deliveries are between 7:30am and 10:30am Thursday to Sunday',

	'type' => 'text',
	'attributes' => array(
	'autocomplete' => 'off'

	// To help users on mobile devices you can turn on autocomplete assistance and autocapitalisation.
	//'autocomplete' => 'given-name', // email, given-name, family-name, country, organization, address-line1, address-line2, address-level1, address-level2, postal-code, tel. https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/autocomplete#values
	//'autocapitalize' => 'on', // off, on, none, sentences, words, characters. This only applies on mobile devices.

	// The aria attributes can be used for accessibility.
	//'aria-describedby' => 'some-element', // Accessibility setting.
	//'aria-label' => 'custom aria label', // Accessibility setting.

	// The custom data can be added for JavaScript use.
	//'data-custom' => 'custom data', // Custom attribute for custom JS use.
	),
	//'validate_callback' => 'cbt_second_email_validation_callback',
	//'sanitize_callback' => 'cbt_second_email_sanitization_callback', // Optional function to santize field value.
	),
	);
	}


	// Validate the Second email field to ensure it is an email address and return a message on error.
	function cbt_second_email_validation_callback( $value, $field ) {
	if ( ! is_email( $value ) ) {
	// Use different label if field is not required.
	$field_name = $field['required'] ? $field['label'] : $field['optionalLabel'];

	return new WP_Error( 'invalid_second_email', sprintf( 'The "%s" field must be an email address.', $field_name ) );
	}
	}
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