package server

import (
	"common/log"
	"common/proto/gen/common"
	"common/proto/gen/grpc_pb"
	"context"
	"scene/instance"
	"sync"
)

func (s *Server) Enter(ctx context.Context, req *grpc_pb.EnterReq) (*grpc_pb.EnterResp, error) {
	var i *instance.Instance
	if len(instance.Mgr.GetAll()) == 0 {
		i = instance.NewScene(s.SID, int(req.InstanceID))
		i.Start(s.EtcdTTL)
	} else {
		for _, v := range instance.Mgr.GetAll() {
			i = v
			break
		}
	}
	i.EventIn <- req
	return &grpc_pb.EnterResp{
		SceneSID: s.SID,
		UniqueNo: i.UniqueNo,
	}, nil
}

func (s *Server) Action(server grpc_pb.Scene_ActionServer) error {
	wg := &sync.WaitGroup{}
	wg.Add(1)
	go func() {
		defer wg.Done()
		defer func() {
			if err := recover(); err != nil {
				log.Errorf("Action panic: %v", err)
			}
		}()
		for {
			if args, err := server.Recv(); err != nil {
				return
			} else {
				if ins := instance.Mgr.GetByUniqueNo(args.UniqueNo); ins != nil {
					select {
					case ins.EventIn <- args:
					default:
						log.Warnf("instance event in full: %v, %v", ins.InstanceID, ins.UniqueNo)
					}
				}
			}
		}
	}()
	wg.Wait()
	return server.SendAndClose(&common.Empty{})
}