<?php

namespace App\Service;

use Hyperf\Di\Annotation\Inject;
use Hyperf\DbConnection\Db;
use App\Model\Coupon;
use App\Model\CouponUserRecType;
use App\Model\CouponRec;
use App\Constants\LogLabel;
use App\Commons\Log;
use Hyperf\Utils\ApplicationContext;
use App\TaskWorker\SSDBTask;
use App\Constants\SsdbKeysPrefix;
use Exception;

class CouponRebateService implements CouponRebateServiceInterface
{
     /**
     * @Inject
     * @var Log
     */
    protected $log;

    /**
     * 领取优惠券
     * 返券活动领取
     * 一次可领取多张优惠券
     * 一个用户不可重复领取
     */
    public function userReceiveCoupon($params)
    {
        $userId         = $params["user_id"];
        $receiveType    = $params["receive_type"];
        $ids            = $params["ids"];
        $sendUserId     = $params["send_user_id"];
        $phone          = $params["phone"];
        $now            = time();
        $ids            = is_array($ids) ? $ids : explode(',',$ids);
        
        // status: 0领取成功  >0领取失败
        $result = [
            'status'        => 1,
            'coupon_text'   => '继续努力~'
        ];
        
        // 错误日志记录
        $errorData = [
            'coupon_ids'     =>$ids,
            'user_id'       =>$userId,
            'receiveType'   =>$receiveType,
            'sendUserId'    =>$sendUserId,
            'phone'         =>$phone
        ];

        $receiveSsdb = [];
        
        try{
            Db::transaction( function() use ($ids,$receiveType,$userId,$sendUserId,$phone,$now,&$result,&$errorData,&$receiveSsdb) {

                $success = [];
                $fail    = [];
                $isr  = [];
        
                //读写锁，完全控制，性能低
                $coupons = Coupon::whereIn('id', $ids)->lockForUpdate()
                        ->select('id','title','status','inventory','inventory_use','start_time','end_time','full_amount','discounts','active_type')
                        ->get();

                foreach($coupons as $coupon){
                    $errorData['coupon_id'] = $coupon->id;

                    //如果优惠卷库存小于等于已领取的数量 或者 未在活动时间内可领取, 否则返回领取失败的优惠券
                    if ( 
                        $coupon->status == 1
                        &&
                        $coupon->inventory > $coupon->inventory_use
                        &&
                        $coupon->start_time <= $now
                        &&
                        $coupon->end_time >= $now
                        &&
                        $coupon->active_type == 2
                        )
                    {

                        // 查询一次能领取的数量
                        $couponReceiveType = CouponUserRecType::where('system_coupon_user_id',$coupon->id)->select('one_receive_number');
                        if (env('SUB_CHANNEL') == 1) {
                            $couponReceiveType->where('receive_type',$receiveType);
                        }
                        $couponReceiveType = $couponReceiveType->first();
                        
                        // 优惠券可领取数量 >= 本次领取数量
                        if($coupon->inventory - $coupon->inventory_use >= $couponReceiveType->one_receive_number){

                            // 判断是否领取过 存在记录则领取过
                            $isReceive = CouponRec::select('id')
                                        ->where('system_coupon_user_id',$coupon->id)
                                        ->where('user_id',$userId)
                                        ->exists();

                            if(!$isReceive){
                                //记录已领取的数量
                                $coupon->inventory_use += $couponReceiveType->number;

                                $couponReceive                        = new CouponRec;
                                $couponReceive->user_id               = $userId;
                                $couponReceive->system_coupon_user_id = $coupon->id;
                                $couponReceive->order_main_id         = 0;
                                $couponReceive->receive_time          = $now;
                                $couponReceive->number                = $couponReceiveType->one_receive_number;
                                $couponReceive->number_remain         = $couponReceiveType->one_receive_number;
                                $couponReceive->status                = 0;
                                $couponReceive->update_time           = $now;
                                $couponReceive->receive_type          = $receiveType;
                                $couponReceive->send_user_id          = $sendUserId;
                                $couponReceive->phone                 = $phone;
                            
                                // if ( $couponReceive->save() && $coupon->save() ) {
                                //     $success[] = $coupon;
                                //     $receiveSsdb[] = $coupon->id;;
                                // }
                            }else{
                                $fail[] = $coupon;
                                $receiveSsdb[] = $coupon->id;
                                $result['status']       = 2;
                                $result['coupon_text']  = '您已领取！赶快去下单吧~';
                                
                                $errorData['msg']       = '用户已经领取了优惠券';
                                $this->log->event(
                                    LogLabel::COUPON_LOG,
                                    $errorData
                                ); 
                            }
                        }else{
                            $fail[] = $coupon;
                            $errorData['remain_receive_number'] = $coupon->inventory - $coupon->inventory_use;
                            $errorData['one_receive_number']    = $couponReceiveType->one_receive_number;
                            $errorData['msg']                   = '优惠券剩余数量不足';
                            $this->log->event(
                                LogLabel::COUPON_LOG,
                                $errorData
                            );
                        }
                    }else{
                        $fail[] = $coupon;
                        $errorData['msg'] = '优惠券已经过期或者被禁用或者已领完';
                        $this->log->event(
                            LogLabel::COUPON_LOG,
                            $errorData
                        );
                    }
                }
                $result['data'] = [
                    'success' => $success,
                    'fail'    => $fail
                ];
                if(count($success) > 0){
                    $result['status'] = 0;
                    $result['coupon_text'] = '恭喜您领取成功！';
                }
            });
        } catch (Exception $e){
            $errorData['msg'] = $e->getMessage();
            $this->log->event(
                LogLabel::COUPON_LOG,
                $errorData
            ); 
        }
        if(count($receiveSsdb) > 0){
            $saveSsdb = [];
            foreach($receiveSsdb as $kssdb => $vssdb){
                $saveSsdb[] = $kssdb;
                $saveSsdb[] = $vssdb;
            }
            // 记录到ssdb
            $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);
            if(false === $ssdb->exec('hset',SsdbKeysPrefix::COUPON_REBATE_RECEIVE.$userId,$saveSsdb)){
                $errorData['msg']       = '记录领取优惠券到ssdb失败';
                $this->log->event(
                    LogLabel::COUPON_LOG,
                    $errorData
                );
            };
        }
        return $result;
    }

    public function isCouponRebate($user_id)
    {
        $res = Db::table('ims_system_coupon_user as u')
            ->leftjoin('ims_system_coupon_user_receive as r','u.id','=','r.system_coupon_user_id')
            ->where([
                ['r.user_id','=',$user_id],
                ['r.receive_type','=',4],
                ['u.active_type','=',2],
            ])
            ->select('r.id')
            ->first();
        return $res;
    }

    public function getActiveInfo()
    {
        $time = time();
        $res = Db::table('ims_system_coupon_user')
            ->where([
                ['status','=',1],
                ['active_type','=',2],
                ['start_time','<=',$time],
                ['end_time','>',$time],
            ])
            ->whereRaw('inventory > inventory_use')
            ->orderBy('addtime','desc')
            ->get();
        return $res;
    }

}