<?php
/**
 * Order screen: saved phone numbers shown with spaces.
 *
 * @package Dialtidy
 */

namespace Dialtidy;

defined( 'ABSPATH' ) || exit;

/**
 * Shows +436601234567 as +43 660 1234567 on the order screen. The saved value is not changed.
 */
class Order_Screen {

	/**
	 * Orders whose shipping details WooCommerce hides on the order screen.
	 *
	 * @var array<int,bool>
	 */
	private static $hidden_shipping = array();

	/**
	 * Hooks.
	 */
	public static function init() {
		add_filter( 'woocommerce_admin_billing_fields', array( __CLASS__, 'billing' ), 20, 3 );
		add_filter( 'woocommerce_admin_shipping_fields', array( __CLASS__, 'shipping' ), 20, 3 );
		add_filter( 'woocommerce_hide_order_admin_shipping_details', array( __CLASS__, 'note_hidden_shipping' ), PHP_INT_MAX, 2 );
	}

	/**
	 * Billing fields shown on the order screen.
	 *
	 * @param mixed  $fields  Fields.
	 * @param mixed  $order   Order.
	 * @param string $context "view" or "edit".
	 * @return mixed
	 */
	public static function billing( $fields, $order = false, $context = 'edit' ) {
		return self::phone( $fields, $order, $context, 'billing' );
	}

	/**
	 * Shipping fields shown on the order screen.
	 *
	 * @param mixed  $fields  Fields.
	 * @param mixed  $order   Order.
	 * @param string $context "view" or "edit".
	 * @return mixed
	 */
	public static function shipping( $fields, $order = false, $context = 'edit' ) {
		if ( $order instanceof \WC_Order && ! empty( self::$hidden_shipping[ $order->get_id() ] ) ) {
			return $fields;
		}
		return self::phone( $fields, $order, $context, 'shipping' );
	}

	/**
	 * Remembers whether WooCommerce hides the shipping details of an order; the value is passed through.
	 *
	 * @param mixed $hide  Whether the details are hidden.
	 * @param mixed $order Order.
	 * @return mixed
	 */
	public static function note_hidden_shipping( $hide, $order = null ) {
		if ( $order instanceof \WC_Order ) {
			self::$hidden_shipping[ $order->get_id() ] = (bool) $hide;
		}
		return $hide;
	}

	/**
	 * Adds the readable number as the shown value of the phone field.
	 *
	 * @param mixed  $fields  Fields.
	 * @param mixed  $order   Order.
	 * @param string $context "view" or "edit".
	 * @param string $group   "billing" or "shipping".
	 * @return mixed
	 */
	private static function phone( $fields, $order, $context, $group ) {
		if ( 'view' !== $context || ! $order instanceof \WC_Order || ! is_array( $fields ) || ! isset( $fields['phone'] ) || ! is_array( $fields['phone'] ) || isset( $fields['phone']['value'] ) ) {
			return $fields;
		}
		$getter = 'get_' . $group . '_phone';
		if ( ! is_callable( array( $order, $getter ) ) ) {
			return $fields;
		}
		$saved = (string) $order->$getter( 'edit' );
		$shown = '' === $saved ? '' : Phone::shown( $saved, 'admin_order' );
		if ( '' !== $shown && $shown !== $saved ) {
			$fields['phone']['value'] = $shown;
		}
		return $fields;
	}
}