package memory

import (
	"sync"
)

///////////////////////////////////////////////////////////////////////////

// 轨旁仿真模型状态
type VerifyStatus struct {
	//道岔状态，key为道岔id即索引 state.SwitchState
	SwitchStateMap sync.Map
	//轨道状态，key为轨道id即索引 state.LinkState
	LinkStateMap sync.Map
	//列车状态，key为列车id即索引 state.TrainState
	TrainStateMap sync.Map
	//计轴区段状态，key为计轴区段的id即索引 state.SectionState
	AxleSectionStateMap sync.Map
	//物理区段状态，key为物理区段id即索引 state.SectionState
	PhysicalSectionStateMap sync.Map
	//逻辑区段状态，key为逻辑区段id即索引 state.SectionState
	LogicSectionStateMap sync.Map
	//信号机状态，key为信号机id,即索引 state.SignalState
	SignalStateMap sync.Map
}

// 轨旁仿真模型状态（变更）
type ChangeVerifyStatus struct {
	VerifyStatus
	//删除的列车ID列表
	RemoveTrainId []string
}

//////////////////////////////////////////////////////////////////////////

// 轨旁仿真内存模型
type WaysideMemory struct {
	//可变状态数据：轨旁仿真模型状态（全量数据）
	Status *VerifyStatus
	// 要变更的状态：用户操作过的状态记录在这里，增量推送次数据
	ChangeStatus *ChangeVerifyStatus
	//状态保护锁
	rwLock *sync.RWMutex
}

// 初始化轨旁仿真内存模型
func (memory *WaysideMemory) Create() *WaysideMemory {
	memory.Status = new(VerifyStatus)
	memory.ChangeStatus = &ChangeVerifyStatus{}
	memory.rwLock = new(sync.RWMutex)
	return memory
}

// 状态读保护操作
func (me *WaysideMemory) SafeOptRead(opt func(memory *WaysideMemory) any) any {
	me.rwLock.RLock()
	defer me.rwLock.RUnlock()
	var rt any = opt(me)
	return rt
}

// 状态写保护操作
func (me *WaysideMemory) SafeOptWrite(opt func(memory *WaysideMemory) any) any {
	me.rwLock.Lock()
	defer me.rwLock.Unlock()
	var rt any = opt(me)
	return rt
}