<?php

namespace WooOrderCart\Front\LocalPickup;

use WC_Order;

class LocalPickupOrderData {
    public const META_LOCATION_ID = '_ips_localpickup_location_id';
    public const META_LOCATION_NAME = '_ips_localpickup_location_name';
    public const META_LOCATION_ADDRESS = '_ips_localpickup_location_address';
    public const META_LOCATION_ESTIMATE = '_ips_localpickup_location_estimate';
    public const META_LOCATION_INSTRUCTIONS = '_ips_localpickup_location_instructions';
    public const META_SHOW_ON_THANK_YOU = '_ips_localpickup_show_on_thankyou';
    public const META_SHOW_IN_EMAILS = '_ips_localpickup_show_in_emails';

    /**
     * Snapshot customer-visible details using the existing order metadata keys.
     * The checkout owns saving the order, including its other pending changes.
     *
     * @param array<string,mixed> $location
     */
    public static function write( WC_Order $order, array $location ): void {
        $order->update_meta_data( self::META_LOCATION_ID, (int) $location['id'] );
        $order->update_meta_data( self::META_LOCATION_NAME, (string) $location['locationName'] );
        $order->update_meta_data( self::META_LOCATION_ADDRESS, ! empty( $location['addressActive'] ) ? (string) $location['addressText'] : '' );
        $order->update_meta_data( self::META_LOCATION_ESTIMATE, ! empty( $location['estimatePickupTimeActive'] ) ? (string) $location['estimatePickupTimeText'] : '' );
        $order->update_meta_data( self::META_LOCATION_INSTRUCTIONS, ! empty( $location['instructionsActive'] ) ? (string) $location['instructionText'] : '' );
        // Explicit strings survive a database roundtrip without turning false
        // into an empty value indistinguishable from absent legacy metadata.
        $order->update_meta_data( self::META_SHOW_ON_THANK_YOU, ! empty( $location['showOnThankYouPage'] ) ? '1' : '0' );
        $order->update_meta_data( self::META_SHOW_IN_EMAILS, ! empty( $location['showInEmails'] ) ? '1' : '0' );
    }

    public static function clear( WC_Order $order ): void {
        foreach ( [ self::META_LOCATION_ID, self::META_LOCATION_NAME, self::META_LOCATION_ADDRESS, self::META_LOCATION_ESTIMATE, self::META_LOCATION_INSTRUCTIONS, self::META_SHOW_ON_THANK_YOU, self::META_SHOW_IN_EMAILS ] as $key ) {
            $order->delete_meta_data( $key );
        }
    }

    /**
     * @return array<string,mixed>|null
     */
    public static function from_order( WC_Order $order ): ?array {
        $location_id = absint( (string) $order->get_meta( self::META_LOCATION_ID, true ) );
        $location_name = trim( (string) $order->get_meta( self::META_LOCATION_NAME, true ) );

        if ( '' === $location_name && $location_id > 0 ) {
            $active_location = LocalPickupResolver::get_active_location( $location_id );
            if ( is_array( $active_location ) ) {
                return $active_location;
            }
        }

        if ( '' === $location_name ) {
            return null;
        }

        return [
            'id' => $location_id,
            'locationName' => $location_name,
            'addressActive' => '' !== trim( (string) $order->get_meta( self::META_LOCATION_ADDRESS, true ) ),
            'addressText' => trim( (string) $order->get_meta( self::META_LOCATION_ADDRESS, true ) ),
            'estimatePickupTimeActive' => '' !== trim( (string) $order->get_meta( self::META_LOCATION_ESTIMATE, true ) ),
            'estimatePickupTimeText' => trim( (string) $order->get_meta( self::META_LOCATION_ESTIMATE, true ) ),
            'instructionsActive' => '' !== trim( (string) $order->get_meta( self::META_LOCATION_INSTRUCTIONS, true ) ),
            'instructionText' => trim( (string) $order->get_meta( self::META_LOCATION_INSTRUCTIONS, true ) ),
            'showOnThankYouPage' => self::read_bool_meta( $order, self::META_SHOW_ON_THANK_YOU, true ),
            'showInEmails' => self::read_bool_meta( $order, self::META_SHOW_IN_EMAILS, true ),
        ];
    }

    private static function read_bool_meta( WC_Order $order, string $meta_key, bool $default ): bool {
        $value = $order->get_meta( $meta_key, true );

        if ( ! $order->meta_exists( $meta_key ) ) {
            return $default;
        }

        return rest_sanitize_boolean( $value );
    }
}