<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\Service\DiscountService;
use app\api\validate\Discount as DiscountValidate;
use app\common\exception\BusinessException;
use app\common\Enum\ErrorCodeEnum;

/**
 * 折扣活动接口
 */
class Discount extends Api
{
    protected $noNeedLogin = ['lists', 'goods','getCurrentActivity'];
    protected $noNeedRight = '*';

    /**
     * 获取当前折扣商品列表
     */
    public function lists()
    {
        $params = $this->request->param();
        
        // 参数验证
        $validate = new DiscountValidate();
        if (!$validate->scene('lists')->check($params)) {
            $this->error($validate->getError());
        }
        
        $page = $params['page'] ?? 1;
        $pageSize = $params['pageSize'] ?? 10;
        $arrGoodsIds = $params['goods_ids'] ?? [];
        
            // 获取折扣商品
            $discountGoods = DiscountService::getCurrentDiscountGoods($arrGoodsIds);
            
            // 分页处理
            $total = count($discountGoods);
            $offset = ($page - 1) * $pageSize;
            $goods = array_slice($discountGoods, $offset, $pageSize);
            
            // 处理数据，添加CDN地址和时间格式化
            foreach ($goods as &$item) {
                // 处理图片地址
                $item['image'] = cdnurl($item['image'], true);
                
                // 添加活动剩余时间
                $item['remaining_time'] = DiscountService::formatRemainingTime($item['end_time']);
                
                // 处理折扣信息
                foreach ($item['discount_info'] as &$discount) {
                    if (!empty($discount['sku_image'])) {
                        $discount['sku_image'] = cdnurl($discount['sku_image'], true);
                    }
                }
            }
            
            $this->success('获取成功', [
                'list' => $goods,
                'total' => $total,
                'page' => $page,
                'pageSize' => $pageSize,
                'totalPages' => ceil($total / $pageSize)
            ]);
    }

    // 增加一个 当前时间段的折扣活动
    public function getCurrentActivity()
    {
        $activity = DiscountService::getCurrentActivity();
        // 添加活动剩余时间
        if(!empty($activity)){
            $activity['remaining_time'] = DiscountService::formatRemainingTime($activity['end_time']);
        }
        $this->success('获取成功', $activity);
    }
    
    /**
     * 获取指定商品的折扣信息
     */
    public function goods()
    {
        $params = $this->request->param();
        
        // 参数验证
        $validate = new DiscountValidate();
        if (!$validate->scene('goods')->check($params)) {
            $this->error($validate->getError());
        }
        
        $goodsId = $this->request->param('goods_id', 0, 'intval');
        $skuId = $this->request->param('sku_id', 0, 'intval');
        
        try {
            // 获取商品折扣信息
            $discountInfo = DiscountService::getGoodsDiscountInfo($goodsId, $skuId);
            
            if (empty($discountInfo)) {
                throw new BusinessException('该商品当前没有参与折扣活动', ErrorCodeEnum::GOODS_NO_DISCOUNT);
            }
            
            // 添加活动剩余时间
            $discountInfo['remaining_time'] = DiscountService::formatRemainingTime($discountInfo['end_time']);
            
            $this->success('获取成功', $discountInfo);
            
        } catch (\Exception $e) {
            $this->error('查询失败：' . $e->getMessage());
        }
    }
    
    /**
     * 批量检查商品折扣信息
     */
    public function batch()
    {
        $params = $this->request->param();
        
        // 参数验证
        $validate = new DiscountValidate();
        if (!$validate->scene('batch')->check($params)) {
            $this->error($validate->getError());
        }
        
        $goodsIds = $params['goods_ids'] ?? [];
        
        try {
            // 批量获取折扣信息
            $discountData = DiscountService::getBatchGoodsDiscountInfo($goodsIds);
            
            $this->success('获取成功', $discountData);
            
        } catch (\Exception $e) {
            $this->error('查询失败：' . $e->getMessage());
        }
    }
}