<?php
namespace Patchwork\Split;

if ( ! defined( 'ABSPATH' ) ) exit;

/**
 * Read access to Patchwork Split's settings. The settings screen itself is
 * drawn by Patchwork Core from Module::settings_fields().
 */
class Settings {

    public static function get_split_reasons(): array {
        return self::parse_reason_list( (string) get_option( 'patchwork_split_split_reasons', '' ) );
    }

    public static function get_unable_reasons(): array {
        return self::parse_reason_list( (string) get_option( 'patchwork_split_unable_reasons', '' ) );
    }

    public static function get_parent_when_empty(): string {
        return (string) get_option( 'patchwork_split_parent_when_empty', 'cancel' );
    }

    public static function get_shipping_mode(): string {
        return (string) get_option( 'patchwork_split_shipping_mode', 'keep' );
    }

    public static function restock_unable(): bool {
        return get_option( 'patchwork_split_restock_unable', '1' ) === '1';
    }

    public static function email_on_split(): bool {
        return get_option( 'patchwork_split_email_on_split', '0' ) === '1';
    }

    public static function email_on_unable(): bool {
        return get_option( 'patchwork_split_email_on_unable', '1' ) === '1';
    }

    /**
     * Can the current user use the manager? Capability-based, so it works for
     * custom roles and multisite super admins.
     */
    public static function current_user_can_split(): bool {
        return current_user_can( Activator::CAP ) && current_user_can( 'edit_shop_orders' );
    }

    /**
     * Can the current user split / change THIS order? The manager check plus
     * WooCommerce's own per-order capability (the one its REST API uses), so
     * plugins that restrict which orders a user may edit are respected.
     *
     * @param \WC_Order|int $order
     */
    public static function current_user_can_edit_order( $order ): bool {
        if ( ! self::current_user_can_split() ) return false;

        $order = $order instanceof \WC_Order ? $order : wc_get_order( absint( $order ) );
        if ( ! $order || $order->get_type() !== 'shop_order' ) return false;

        $type = get_post_type_object( 'shop_order' );
        $cap  = $type ? $type->cap->edit_post : 'edit_shop_order';

        return (bool) apply_filters( 'patchwork_split_user_can_edit_order', current_user_can( $cap, $order->get_id() ), $order );
    }

    /**
     * Parse a textarea list into a clean array.
     */
    private static function parse_reason_list( string $raw ): array {
        return array_values( array_filter( array_map( 'trim', explode( "\n", $raw ) ), 'strlen' ) );
    }
}