<?php

namespace backend\modules\mall\services;

use yii\helpers\Json;

/**
 * 积分赠送服务
 */
class GiveScoreService
{
    /**
     * 设置商品积分营销信息
     * @param $form
     * @return mixed
     */
    public static function setGoodsMarketing($form)
    {
        $group_goods = $form['group_order_goods'];
        if (empty($group_goods)) return $form;

        if (!isset($form['sku']) || !isset($form['total_pay_money'])) {
            return $form;
        }
        $total_price = self::getTotalPrice($group_goods); // 总金额
        foreach ($group_goods as &$item) { // 循环商品组
            foreach ($item['goods'] as $goods_id => $goods) {
                if (empty($form['sku'][$goods['goods_id']]['goods']['extra']['score_give_setting'])) continue;
                $give_setting = $form['sku'][$goods['goods_id']]['goods']['extra']['score_give_setting'];
                $settingArr = Json::decode($give_setting, true);
                if (!is_array($settingArr)) {
                    continue; // 确保 $settingArr 是数组
                }
                if (isset($settingArr['enable_give_score']) && empty($settingArr['enable_give_score'])) continue;
                if (empty($settingArr['code']) || $settingArr['code'] != 'score') continue;

                foreach ($goods['goods_details'] as $k => $goods_detail) {
                    if (isset($item['goods'][$goods_id]['goods_details'][$k]['marketing']['give_' . $settingArr['code']])) {
                        $give_marketing = $item['goods'][$goods_id]['goods_details'][$k]['marketing']['give_' . $settingArr['code']];
                        if (!empty($give_marketing)) { // 当前订单存在积分赠送信息
                            // 计算积分赠送数目
                            $give_num = self::calculateGiveNum($goods_detail, $total_price, $settingArr, $form);
                            if ($give_num >= 0 && $give_num != false) {
                                $item['goods'][$goods_id]['goods_details'][$k]['marketing']['give_' . $settingArr['code']] = $give_num;
                            }
                        }
                    }
                }
            }
        }
        unset($item);
        return $form;
    }

    /**
     * 获取商品总金额
     * @param $goods
     * @return float|int
     */
    private static function getTotalPrice($goods)
    {
        $total_price = 0;
        foreach ($goods as $item) {
            $total_price += array_sum(
                array_column($item['goods'], 'goods_price')
            );
        }
        return $total_price;
    }

    /**
     * 积分计算数目
     * @param $goods_detail
     * @param $total_price
     * @param $settingArr
     * @param $form
     * @return int|mixed
     */
    private static function calculateGiveNum($goods_detail, $total_price, $settingArr, $form)
    {
        // 判断积分赠送是否是百分比-并且赠送计算方式为订单支付
        if ($settingArr['give_type'] == 2 && !empty($settingArr['calculation_value'])) {
            $give_rate = $settingArr['give_num'] / 100; // 获取百分比
            $give_num = bcmul($give_rate, $goods_detail['goods_price'], 2); // 使用 bcmath 进行高精度计算
            return max($give_num, 0);
        }
        return false;
    }
}