<?php
namespace app\order\controller;
use app\coupons\model\CouponModel;
use app\order\model\OrderModel;
use cmf\controller\HomeBaseController;
use think\Db;

/**
 * @title 订单模块
 */
class OrderController extends HomeBaseController
{

    function _initialize()
    {
        session('user.id', 2);
        if (empty(session('user.id'))) {
            echo json_encode(['msg' => '登陆失败', 'code' => 40001]);
            exit();
        }
    }

    /**
     * @title 下单页面
     * @description 默认访问接口
     * @author sᴏᴜʟ ᴏғ ᴄɪɴᴅᴇʀ
     * @url /order/Order/confirm
     * @method POST
     *
     * @param name:activity_id  type:int require:1 default:19 desc:上一页选中的活动id
     * @param name:schedule_id  type:int require:1 default:68 desc:上一页选中的批次id
     * @param name:num  type:int require:1 default:2 desc:上一页选中的购买数量
     */
    public function confirm()
    {
        $request = request();
        $post = $request->param();
        $coupons = new CouponModel;
        $post['num'] = (request()->param('num') == null) ? 1 : request()->param('num');
        $couponsList = $coupons->orderCoupon($post['activity_id'], $post['schedule_id'], $post['num'], session('user.id'));
        $schedule = Db::name('activity_schedule')
            ->field('id as schedule_id,start_time,end_time,maximum,real_join_num,addition_join_num,price')
            ->where(['activity_id' => $post['activity_id']])
            ->select();
        $total = 0;
        $choose = [];
        foreach ($schedule as $k => $v) {
            $v['start_time'] = date('Y.m.d', $v['start_time']);
            $v['end_time'] = date('Y.m.d', $v['end_time']);
            if ($v['schedule_id'] == $post['schedule_id']) {
                $allowMaximum = $v['maximum'] - ($v['real_join_num'] + $v['addition_join_num']);
                $total = $v['price'] * $post['num'];
                $choose = [
                    'schedule_id' => $post['schedule_id'],
                    'time_text' => $v['start_time'] . ' 至 ' . $v['end_time'],
                    'num' => $post['num'],
                    'allowMaximum' => $allowMaximum
                ];
            }
            unset($v['real_join_num']);
            unset($v['addition_join_num']);
            unset($v['maximum']);
            $schedule[$k] = $v;
        }
        $result = [
            'is_first' => Db::name('user')->where(['id' => session('user.id')])->value('is_first'),
            'activity' => Db::name('activity')->field('id as activity_id,name, is_down_payment as type')->where(['id' => $post['activity_id']])->find(),
            'schedule' => $schedule,
            'choose' => $choose,
            'coupons' => $couponsList,
            'down_price' => Db::name('activity')->where(['id' => $post['activity_id']])->value('down_price') * $post['num'],
            'total' => $total
        ];
        if (request()->isPost()) {
            echo json_encode(['data' => $result, 'code' => 20000]);
            exit();
        } else {
            return $this->fetch(':confirm', [
                'data' => $result
            ]);
        }
    }

    /**
     * @title 提交订单
     * @description 默认访问接口
     * @author sᴏᴜʟ ᴏғ ᴄɪɴᴅᴇʀ
     * @url /order/Order/done
     * @method POST
     *
     * @param name:activity_id  type:int require:1 default:19 desc:活动id
     * @param name:schedule_id  type:int require:1 default:68 desc:批次id
     * @param name:num  type:int require:1 default:2 desc:购买数量
     * @param name:escort  type:char require:1 default:同行人id字符串(逗号分隔) desc:1,2,3
     * @param name:payment  type:int require:1 default:支付方式 desc:0余额,1微信,2支付宝
     * @param name:discount_coupon_id  type:int require:0 default:112 desc:优惠券id
     * @param name:room  type:char require:1 default:1 desc:房间信息
     * @param name:desc  type:text require:1 default:0 desc:商家备注
     */
    public function done()
    {
        $request = request();
        if ($request->isPost()) {
            $post = $request->param();
            $data['user_id'] = session('user.id');
            $data['order_sn'] = date('YmdHis') . rand(0, 9999);
            $data['activity_id'] = $post['activity_id'];
            $data['schedule_id'] = $post['schedule_id'];
            $data['add_time'] = time();
            $activity = Db::name('activity')->field('is_down_payment,down_price')->where(['id' => $post['activity_id']])->find();
            $data['order_type'] = $activity['is_down_payment'];
            $data['is_use_discount_coupon'] = (empty($post['discount_coupon_id'])) ? 0 : 1;
            $data['discount_coupon_id'] = $post['discount_coupon_id'];
            $data['payment'] = $post['payment'];
            $data['status'] = 0;
            $data['room'] = $post['room'];
            $data['desc'] = $post['desc'];
            $final_price = $this->getFinalPrice($data['activity_id'], $data['schedule_id'], $post['num'], $data['discount_coupon_id']);
            $post['escort'] = substr($post['escort'], 0, strlen($post['escort']) - 1);
            $this->checkOrder($data['schedule_id'], $data['payment'], $post['escort'], $post['num'], $final_price);
            Db::startTrans();
            if (Db::name('order_info')->insert($data)) {
                //☆在这就要将优惠券变为已使用☆
                $oid = Db::name('order_info')->getLastInsID();
                $detail = [];
                $explode_escort = explode(',', $post['escort']);
                for ($i = 0; $i < $post['num']; $i++) {
                    $detail[$i] = [
                        'oid' => $oid,
                        'escort_id' => $explode_escort[$i],
                        'status' => 0
                    ];
                }
                if (Db::name('order_detail')->insertAll($detail)) {
                    //插入订单记录表（包含订单总价）
                    $log = [
                        'oid' => $oid,
                        'order_amount' => $final_price,
                        'type' => $data['order_type']
                    ];
                    if (Db::name('order_log')->insert($log)) {
                        Db::commit();
                        $model = new OrderModel;
                        if ($model->orderCallBack($oid)) {
                            echo json_encode(['msg' => '下单成功', 'code' => 20000]);
                            exit();
                        } else {
                            echo json_encode(['msg' => '下单失败', 'code' => 40000]);
                            exit();
                        }
                    }
                }
            } else {
                Db::rollback();
                echo json_encode(['msg' => '下单失败', 'code' => 40000]);
                exit();
            }
        } else {
            echo json_encode(['msg' => '非法操作', 'code' => 40000]);
            exit();
        }
    }

    /**
     * 计算订单最终价格
     * @param $activityId
     * @param $scheduleId
     * @param $num
     * @param null $discountCouponId
     * @return float|int|mixed
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\ModelNotFoundException
     * @throws \think\exception\DbException
     */
    private function getFinalPrice($activityId, $scheduleId, $num, $discountCouponId = null)
    {
        $info = Db::name('activity')->field('is_down_payment,down_price')->where(['id' => $activityId])->find();
        //如果有定金则支付定金*数量
        if ($info['is_down_payment'] == 1) {
            $sum = $info['down_price'] * $num;
        } //如果没有定金则支付批次金额*数量
        else {
            $price = Db::name('activity_schedule')->where(['activity_id' => $activityId, 'id' => $scheduleId])->value('price');
            $sum = $price * $num;
        }
        //如果有使用优惠券
        if (!empty($discountCouponId)) {
            //判断该优惠券是否已使用
            $coupons = Db::name('discount_coupon')->field('status,reduce,overflow')->where(['id' => $discountCouponId])->find();
            if ($coupons['status'] == 1) {
                //是否符合满减
                if ($sum >= $coupons['overflow']) {
                    $sum -= $coupons['reduce'];
                }
            }
        }
        return $sum;
    }

    /**
     * 订单校验
     * @param $scheduleId
     * @param int $payment
     * @param $escort
     * @param $num
     * @param $finalPrice
     */
    private function checkOrder($scheduleId, $payment = 0, $escort, $num, $finalPrice)
    {
        if($scheduleId == null) {
            echo json_encode(['msg' => '请选择活动批次', 'code' => 40000]);
            exit();
        }
        //判断活动是否过期
        if (Db::name('activity_schedule')->where(['id' => $scheduleId])->value('deadline') < time()) {
            echo json_encode(['msg' => '本次活动已过期，请重新选择', 'code' => 40000]);
            exit();
        }
        //判断出行人与购买数量是否匹配
        $escortNum = (strlen($escort) == 1) ? 1 : count(explode(',', $escort));
        if ($escortNum != $num) {
            echo json_encode(['msg' => '购买数量需与出行人数量一致', 'code' => 40000]);
            exit();
        }
        //判断支付方式
        if (($payment != 0 && $payment != 1 && $payment != 2 && $payment) || $payment == null) {
            echo json_encode(['msg' => '请选择支付方式', 'code' => 40000]);
            exit();
        }
        //判断用户余额能否支持余额支付
        if (Db::name('user')->where(['id' => session('user.id')])->value('balance') < $finalPrice) {
            echo json_encode(['msg' => '您的余额不足，请选择其他支付方式', 'code' => 40000]);
            exit();
        }
    }

}