<?php

namespace ACA\WC\Search\Order;

use AC;
use AC\Helper\Select\Options;
use ACP\Query\Bindings;
use ACP\Search\Comparison;
use ACP\Search\Operators;
use ACP\Search\Value;

class ShippingMethod extends Comparison
    implements Comparison\Values
{

    public function __construct()
    {
        $operators = new Operators([
            Operators::EQ,
        ]);

        parent::__construct($operators);
    }

    protected function create_query_bindings(string $operator, Value $value): Bindings
    {
        global $wpdb;

        $bindings = new Bindings();

        $alias_order = $bindings->get_unique_alias('shippingmethod_order');
        $alias_meta = $bindings->get_unique_alias('shippingmethod_meta');
        $table = $wpdb->prefix . 'wc_orders';

        $where = $wpdb->prepare(
            "$alias_meta.meta_value = %s AND $alias_meta.meta_key = 'method_id'",
            $value->get_value()
        );

        $bindings->where($where);

        $join = " LEFT JOIN {$wpdb->prefix}woocommerce_order_items AS $alias_order ON ( $table.id = $alias_order.order_id ) ";
        $join .= "LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS $alias_meta ON ( $alias_order.order_item_id = $alias_meta.order_item_id ) ";

        $bindings->join($join);

        return $bindings;
    }

    public function get_values(): Options
    {
        $options = [];

        foreach (WC()->shipping()->load_shipping_methods() as $key => $method) {
            $options[$key] = $method->method_title;
        }

        return AC\Helper\Select\Options::create_from_array($options);
    }

}