<?php
/**
 * Copy addresses from an order to a customer.
 *
 * @package AdminPowerups
 */

namespace SmartWP\AdminPowerups\Support;

use WC_Customer;
use WC_Order;

defined( 'ABSPATH' ) || exit;

/**
 * Shared address helpers.
 *
 * @since 1.0.0
 */
final class CustomerAddress {

	/**
	 * Address fields per type (without the type prefix).
	 *
	 * @since 1.0.0
	 * @param string $type billing|shipping.
	 * @return string[]
	 */
	public static function fields( $type ) {
		$fields = array( 'first_name', 'last_name', 'company', 'address_1', 'address_2', 'city', 'state', 'postcode', 'country', 'phone' );
		if ( 'billing' === $type ) {
			$fields[] = 'email';
		}
		return $fields;
	}

	/**
	 * Copy an order's billing or shipping address onto a customer via WC_Customer CRUD.
	 *
	 * @since 1.0.0
	 * @param WC_Order $order      Source order.
	 * @param int      $user_id    Target user.
	 * @param string   $type       billing|shipping.
	 * @param bool     $skip_empty Leave the profile value alone when the order value is empty.
	 * @return string[] Field keys that were written (e.g. billing_city).
	 * @throws \Exception When the customer cannot be loaded.
	 */
	public static function copy_from_order( WC_Order $order, $user_id, $type, $skip_empty = false ) {
		if ( ! in_array( $type, array( 'billing', 'shipping' ), true ) ) {
			return array();
		}

		$customer = new WC_Customer( $user_id );
		$written  = array();

		foreach ( self::fields( $type ) as $field ) {
			$getter = "get_{$type}_{$field}";
			$setter = "set_{$type}_{$field}";
			if ( ! is_callable( array( $order, $getter ) ) || ! is_callable( array( $customer, $setter ) ) ) {
				continue;
			}
			$value = (string) $order->$getter();
			if ( $skip_empty && '' === $value ) {
				continue;
			}
			$customer->$setter( $value );
			$written[] = "{$type}_{$field}";
		}

		$customer->save();

		/**
		 * Fires after an order address has been copied to a customer profile.
		 *
		 * @since 1.0.0
		 * @param int      $user_id Customer ID.
		 * @param WC_Order $order   Source order.
		 * @param string   $type    billing|shipping.
		 * @param string[] $written Written field keys.
		 */
		do_action( 'apwc_order_address_copied', $user_id, $order, $type, $written );

		return $written;
	}

	/**
	 * One-line formatted address for a user, or empty string.
	 *
	 * @since 1.0.0
	 * @param int    $user_id User ID.
	 * @param string $type    billing|shipping.
	 * @return string
	 */
	public static function format_for_user( $user_id, $type ) {
		$parts = array();
		foreach ( array( 'first_name', 'last_name', 'company', 'address_1', 'address_2', 'city', 'state', 'postcode', 'country' ) as $field ) {
			$parts[ $field ] = (string) get_user_meta( $user_id, "{$type}_{$field}", true );
		}
		if ( '' === implode( '', $parts ) ) {
			return '';
		}
		return WC()->countries->get_formatted_address( $parts, ', ' );
	}
}