<?php

namespace WooOrderCart\Front\Checkout;

use Throwable;

class CheckoutCustomerSessionHydrator {
    /**
     * @return array<string,array<string,string>>
     */
    public static function hydrate_logged_in_customer( int $user_id, string $user_email = '' ): array {
        $payload = self::build_customer_update_payload( $user_id, $user_email );
        self::apply_payload_to_active_customer( $payload );

        return $payload;
    }

    /**
     * @return array<string,array<string,string>>
     */
    public static function build_customer_update_payload( int $user_id, string $user_email = '' ): array {
        if ( $user_id <= 0 || ! function_exists( 'WC' ) ) {
            return self::empty_payload();
        }

        return CheckoutCustomerProfileResolver::resolve( $user_id, $user_email, WC()->checkout() );
    }

    /**
     * @param array<string,array<string,string>> $payload
     */
    private static function apply_payload_to_active_customer( array $payload ): void {
        if ( ! function_exists( 'WC' ) || ! WC()->customer ) {
            return;
        }

        try {
            $billing = is_array( $payload['billing_address'] ?? null ) ? $payload['billing_address'] : [];
            $shipping = is_array( $payload['shipping_address'] ?? null ) ? $payload['shipping_address'] : [];

            WC()->customer->set_props(
                [
                    'billing_first_name'  => $billing['first_name'] ?? null,
                    'billing_last_name'   => $billing['last_name'] ?? null,
                    'billing_company'     => $billing['company'] ?? null,
                    'billing_address_1'   => $billing['address_1'] ?? null,
                    'billing_address_2'   => $billing['address_2'] ?? null,
                    'billing_city'        => $billing['city'] ?? null,
                    'billing_state'       => $billing['state'] ?? null,
                    'billing_postcode'    => $billing['postcode'] ?? null,
                    'billing_country'     => $billing['country'] ?? null,
                    'billing_phone'       => $billing['phone'] ?? null,
                    'billing_email'       => $billing['email'] ?? null,
                    'shipping_first_name' => $shipping['first_name'] ?? null,
                    'shipping_last_name'  => $shipping['last_name'] ?? null,
                    'shipping_company'    => $shipping['company'] ?? null,
                    'shipping_address_1'  => $shipping['address_1'] ?? null,
                    'shipping_address_2'  => $shipping['address_2'] ?? null,
                    'shipping_city'       => $shipping['city'] ?? null,
                    'shipping_state'      => $shipping['state'] ?? null,
                    'shipping_postcode'   => $shipping['postcode'] ?? null,
                    'shipping_country'    => $shipping['country'] ?? null,
                    'shipping_phone'      => $shipping['phone'] ?? null,
                ]
            );

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

            if ( WC()->session && method_exists( WC()->session, 'set_customer_session_cookie' ) ) {
                WC()->session->set_customer_session_cookie( true );
            }

            if ( WC()->session && method_exists( WC()->session, 'save_data' ) ) {
                WC()->session->save_data();
            }

            if ( WC()->cart ) {
                WC()->cart->calculate_totals();
            }
        } catch ( Throwable $throwable ) {
            if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
                error_log( '[IPS Order Cart] Unable to apply hydrated customer payload: ' . $throwable->getMessage() );
            }
        }
    }

    /**
     * @return array<string,array<string,string>>
     */
    private static function empty_payload(): array {
        return [
            'billing_address'  => [],
            'shipping_address' => [],
        ];
    }
}