<?php

namespace WooOrderCart\Front\LocalPickup;

use WooOrderCart\Lifecycle\CartDataManifest;

use WooOrderCart\Modules\Support\ModuleToggles;
use WP_Post;

class LocalPickupResolver {
    private const META_KEY = CartDataManifest::LOCAL_PICKUP_META_KEY;

    /** Current cart-dependent locations and selection, shared by bootstrap and Store API. */
    public static function build_checkout_payload(): array {
        $locations = self::get_active_locations();
        $selected_id = LocalPickupSession::get_selected_location_id();
        $invalid = $selected_id > 0 && ! in_array( $selected_id, array_map( 'intval', array_column( $locations, 'id' ) ), true );
        if ( ! ModuleToggles::instance()->is_enabled( 'localpickup' ) ) {
            $selected_id = 0;
            $invalid = false;
        } elseif ( $selected_id <= 0 && isset( $locations[0] ) ) {
            $selected_id = (int) $locations[0]['id'];
        }

        // Keep invalid explicit selections in the session: final validation must require a new choice.
        return [
            'available' => [] !== $locations,
            'selectedLocationId' => $invalid ? 0 : $selected_id,
            'selectionInvalid' => $invalid,
            'locations' => $locations,
        ];
    }

    /**
     * @return array<int,array<string,mixed>>
     */
    public static function get_active_locations(): array {
        if ( ! ModuleToggles::instance()->is_enabled( 'localpickup' ) ) {
            return [];
        }

        $query = new \WP_Query(
            [
                'post_type' => CartDataManifest::LOCAL_PICKUP_POST_TYPE,
                'post_status' => [ 'publish' ],
                'posts_per_page' => -1,
                'orderby' => 'date',
                'order' => 'DESC',
                'no_found_rows' => true,
            ]
        );

        $locations = [];

        foreach ( $query->posts as $post ) {
            if ( ! $post instanceof WP_Post ) {
                continue;
            }

            $location = self::build_location_payload( $post );
            if ( null === $location ) {
                continue;
            }

            $locations[] = $location;
        }

        $locations = apply_filters( 'ipscmi_order_cart_localpickup_available_locations', $locations );

        if ( ! is_array( $locations ) ) {
            return [];
        }

        return array_values(
            array_filter(
                $locations,
                static function( $location ): bool {
                    return is_array( $location ) && [] !== $location;
                }
            )
        );
    }

    /**
     * @return array<string,mixed>|null
     */
    public static function get_active_location( int $post_id ): ?array {
        if ( ! ModuleToggles::instance()->is_enabled( 'localpickup' ) ) {
            return null;
        }

        $post = get_post( $post_id );

        if ( ! $post instanceof WP_Post || CartDataManifest::LOCAL_PICKUP_POST_TYPE !== $post->post_type || 'publish' !== get_post_status( $post ) ) {
            return null;
        }

        $location = self::build_location_payload( $post );
        $location = apply_filters( 'ipscmi_order_cart_localpickup_active_location', $location, $post_id );

        return is_array( $location ) && [] !== $location ? $location : null;
    }

    /**
     * @return array<string,mixed>|null
     */
    private static function build_location_payload( WP_Post $post ): ?array {
        $meta = get_post_meta( $post->ID, self::META_KEY, true );
        if ( ! is_array( $meta ) ) {
            $meta = [];
        }

        $location_name = trim( (string) ( $meta['ips-mb-localpickup-mainlocationname'] ?? '' ) );
        if ( '' === $location_name ) {
            $location_name = trim( (string) $post->post_title );
        }

        if ( '' === $location_name ) {
            $location_name = __( 'Pickup location', 'ips-order-cart' );
        }

        return [
            'id' => (int) $post->ID,
            'title' => (string) $post->post_title,
            'locationName' => $location_name,
            'addressActive' => rest_sanitize_boolean( $meta['ips-mb-localpickup-addressselect'] ?? true ),
            'addressText' => trim( (string) ( $meta['ips-mb-localpickup-addresstext'] ?? '' ) ),
            'estimatePickupTimeActive' => rest_sanitize_boolean( $meta['ips-mb-localpickup-estimatetimeselect'] ?? false ),
            'estimatePickupTimeText' => trim( (string) ( $meta['ips-mb-localpickup-estimatetimetext'] ?? '' ) ),
            'instructionsActive' => rest_sanitize_boolean( $meta['ips-mb-localpickup-instructionsselect'] ?? true ),
            'instructionText' => trim( (string) ( $meta['ips-mb-localpickup-instructiontext'] ?? '' ) ),
            'showOnThankYouPage' => rest_sanitize_boolean( $meta['ips-mb-localpickup-showthankyou'] ?? true ),
            'showInEmails' => rest_sanitize_boolean( $meta['ips-mb-localpickup-showemails'] ?? true ),
        ];
    }
}