<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use think\Db;
use Exception;

/**
 * 用户领券记录管理
 *
 * @icon fa fa-ticket
 */
class UserCoupon extends Backend
{
    /**
     * @var \app\admin\model\UserCoupon
     */
    protected $model = null;
    protected $relationSearch = true;
    protected $searchFields = 'id,user.nickname,user.mobile,coupon.name,order.order_no';
    protected $multiFields = 'status';

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\UserCoupon;
        $this->view->assign('statusList', $this->model->getStatusList());
    }

    /**
     * 领券记录列表（支持按状态 unused/used/expired 筛选及关联会员/优惠券/核销订单检索）
     */
    public function index()
    {
        $this->request->filter(['strip_tags', 'trim']);
        if (false === $this->request->isAjax()) {
            return $this->view->fetch();
        }
        if ($this->request->request('keyField')) {
            return $this->selectpage();
        }

        // 自动将已超过优惠券截止时间的未使用领券记录同步为 expired
        $now = time();
        $expiredCouponIds = Db::name('coupon')
            ->where('end_time', '>', 0)
            ->where('end_time', '<', $now)
            ->column('id');
        if (!empty($expiredCouponIds)) {
            Db::name('user_coupon')
                ->where('status', 'unused')
                ->where('coupon_id', 'in', $expiredCouponIds)
                ->update(['status' => 'expired']);
        }

        [$where, $sort, $order, $offset, $limit] = $this->buildparams();
        $list = $this->model
            ->with(['user', 'coupon', 'order'])
            ->where($where)
            ->order($sort, $order)
            ->paginate($limit);

        return json(['total' => $list->total(), 'rows' => $list->items()]);
    }

    /**
     * 禁止后台空造领券流水
     */
    public function add()
    {
        $this->error('用户领券记录由客户端领券中心真实发放生成，不支持后台手工伪造');
    }

    /**
     * 删除未使用或已过期的无效领券记录（已核销关联订单的记录受账务保护禁止删除）
     */
    public function del($ids = null)
    {
        if (false === $this->request->isPost()) {
            $this->error(__('Invalid parameters'));
        }
        $ids = $ids ?: $this->request->post('ids');
        $idArr = array_values(array_filter(array_map('intval', explode(',', (string)$ids))));
        if (!$idArr) {
            $this->error(__('Parameter %s can not be empty', 'ids'));
        }
        $usedCnt = Db::name('user_coupon')->where('id', 'in', $idArr)->where('status', 'used')->count();
        if ($usedCnt > 0) {
            $this->error('所选记录中包含已核销抵扣订单的优惠券，为保障账务闭环禁止删除');
        }
        Db::startTrans();
        try {
            $deleted = Db::name('user_coupon')->where('id', 'in', $idArr)->delete();
            Db::commit();
        } catch (Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($deleted) {
            $this->success();
        }
        $this->error(__('No rows were deleted'));
    }
}