package message_server

import (
	"sync"
	"time"

	"joylink.club/bj-rtsts-server/config"
	"joylink.club/bj-rtsts-server/message_server/ms_api"
	"joylink.club/bj-rtsts-server/message_server/ms_manage"
	"joylink.club/bj-rtsts-server/ts/protos/graphicData"
	"joylink.club/bj-rtsts-server/ts/simulation/wayside/memory"
)

const (
	SimulationTopicPrefix             = "/" + config.SystemName + "/simulation/"
	SimulationStateTopicPrefix        = SimulationTopicPrefix + "%s/state/%d"
	SimulationDeviceStatesTopicPrefix = SimulationTopicPrefix + "%s/devicestates/%d"
)

var smsMap sync.Map

// 仿真消息服务
// 管理仿真消息服务,整体可以作为一个消息服务,也可以每个消息子服务各自作为一个消息服务,暂时先按整体作为一个消息服务的方式使用
type SimulationMs struct {
	vs  *memory.VerifySimulation
	mss []ms_api.IMsgServer
}

// 启动仿真所需的消息服务
func Start(vs *memory.VerifySimulation) {
	_, ok := smsMap.Load(vs.SimulationId)
	if !ok {
		sms := &SimulationMs{
			vs:  vs,
			mss: []ms_api.IMsgServer{},
		}
		for _, mapId := range vs.MapIds {
			t := memory.QueryGiType(mapId)
			switch t {
			case graphicData.PictureType_StationLayout: // 平面布置图
				// 添加车站关联的平面布置图、IBP、PSL信息
				sms.mss = append(sms.mss, NewSfpMs(vs, mapId), NewIBPMs(vs, mapId), NewPSLMs(vs, mapId))
			case graphicData.PictureType_RelayCabinetLayout: // 继电器柜
				sms.mss = append(sms.mss, NewRccMs(vs, mapId))
			}
		}
		// 启动仿真状态服务
		NewSimulationStateMs(vs)
		ms_manage.Register(sms)
		smsMap.Store(vs.SimulationId, sms)
	}
}

// 关闭仿真消息服务
func Close(vs *memory.VerifySimulation) {
	sms, ok := smsMap.Load(vs.SimulationId)
	if ok {
		ms_manage.Unregister(sms.(*SimulationMs))
		smsMap.Delete(vs.SimulationId)
	}
}

// 获取通道
func (sms *SimulationMs) GetChannel() string {
	return sms.vs.SimulationId
}

// 发送消息间隔时间,单位ms
func (sms *SimulationMs) GetInterval() time.Duration {
	return 200 * time.Millisecond
}

// 构造定时发送的消息
func (sms *SimulationMs) OnTick() ([]*ms_api.TopicMsg, error) {
	var tmList []*ms_api.TopicMsg
	for _, ms := range sms.mss {
		tm, err := ms.OnTick()
		if err != nil {
			return nil, err
		}
		if len(tm) > 0 {
			tmList = append(tmList, tm...)
		}
	}
	return tmList, nil
}

func (sms *SimulationMs) OnError(err error) {
	// TODO: 仿真消息错误处理
}