package system

import (
	"fmt"

	"github.com/yohamta/donburi/filter"
	"joylink.club/ecs"
	"joylink.club/rtsssimulation/components"
	"joylink.club/rtsssimulation/state"
)

var psdQuery = ecs.NewQuery(filter.Contains(components.DeviceIdentityComponent, components.PsdStateComponent, components.EntityTagHandlerComponent))

const (
	//屏蔽门完全关闭
	PsdCellWholeCloseRate = 100
	//屏蔽门完全打开
	PsdCellWholeOpenRate = 0
)

type PsdSystem struct {
	cellsQuery map[state.EntityTag]*ecs.Query
}

func NewPsdSystem() *PsdSystem {
	return &PsdSystem{cellsQuery: make(map[state.EntityTag]*ecs.Query)}
}

// world 执行
func (me *PsdSystem) Update(world ecs.World) {
	psdQuery.Each(world, func(psdEntry *ecs.Entry) {
		psdTag := components.EntityTagHandlerComponent.Get(psdEntry).Tag
		psdCellQuery, ok := me.cellsQuery[psdTag]
		if !ok {
			psdCellQuery = ecs.NewQuery(filter.Contains(psdTag, components.PercentageDeviceComponent))
			me.cellsQuery[psdTag] = psdCellQuery
		}
		//
		var allCellClosed, allCellOpened bool = true, true
		psdCellQuery.Each(world, func(psdCellEntry *ecs.Entry) {
			psdCellRate := components.PercentageDeviceComponent.Get(psdCellEntry).Rate
			if allCellClosed {
				allCellClosed = psdCellRate == PsdCellWholeCloseRate
			}
			if allCellOpened {
				allCellOpened = psdCellRate == PsdCellWholeOpenRate
			}
		})
		//
		psdState := components.PsdStateComponent.Get(psdEntry)
		psdState.AllClosed = allCellClosed
		psdState.AllOpened = allCellOpened
	})
}

// 车站单侧屏蔽门互锁解除操作
func FirePsdInterlockRelease(world ecs.World, psdId string, lockRelease bool) error {
	psdEntry, err := findPsdEntry(world, psdId)
	if nil != err {
		return err
	}
	components.PsdStateComponent.Get(psdEntry).InterlockReleased = lockRelease
	//
	return nil
}

// 车站单侧屏蔽门操作
// closeOpt true-关门操作，false-开门操作
func FirePsdOperation(world ecs.World, psdId string, closeOpt bool) error {
	psdEntry, err := findPsdEntry(world, psdId)
	if nil != err {
		return err
	}
	//屏蔽门标签
	psdTag := components.EntityTagHandlerComponent.Get(psdEntry).Tag
	psdCellQuery := ecs.NewQuery(filter.Contains(psdTag))
	psdCellQuery.Each(world, func(psdCellEntry *ecs.Entry) {
		if closeOpt {
			FirePercentageDeviceOperation(world, psdCellEntry, findPsdWholeMoveTime(psdId), PsdCellWholeCloseRate)
		} else {
			FirePercentageDeviceOperation(world, psdCellEntry, findPsdWholeMoveTime(psdId), PsdCellWholeOpenRate)
		}
	})
	//
	return nil
}

// 车站单侧屏蔽门单元cell操作
// closeRate cell最终关上的百分比，100-完全关上，0-完全未关即完全打开，(0,100)内即半关闭
func FirePsdCellOperation(world ecs.World, psdId string, psdCellId string, closeRate int32) error {
	if closeRate < 0 || closeRate > 100 {
		return fmt.Errorf("屏蔽门单元操作closeRate(%d)不在[0,100]内", closeRate)
	}
	//
	psdEntry, err := findPsdEntry(world, psdId)
	if nil != err {
		return err
	}
	//屏蔽门标签
	psdTag := components.EntityTagHandlerComponent.Get(psdEntry).Tag
	psdCellQuery := ecs.NewQuery(filter.Contains(psdTag))
	var psdCellEntry *ecs.Entry = nil
	psdCellQuery.Each(world, func(e *ecs.Entry) {
		if psdCellId == components.DeviceIdentityComponent.Get(e).Id {
			psdCellEntry = e
		}
	})
	if psdCellEntry == nil {
		return fmt.Errorf("屏蔽门[%s]的单元门[%s]的实体不存在", psdId, psdCellId)
	}
	//
	return FirePercentageDeviceOperation(world, psdCellEntry, findPsdWholeMoveTime(psdId), closeRate)
}

// 获取屏蔽门实体
func findPsdEntry(world ecs.World, psdId string) (*ecs.Entry, error) {
	var psdEntry *ecs.Entry = nil
	psdQuery.Each(world, func(e *ecs.Entry) {
		if psdId == components.DeviceIdentityComponent.Get(e).Id {
			psdEntry = e
		}
	})
	if psdEntry == nil {
		return nil, fmt.Errorf("屏蔽门[%s]实体不存在", psdId)
	} else {
		return psdEntry, nil
	}
}

// 获取屏蔽门从完全开到完全关所需时间，单位ms
func findPsdWholeMoveTime(psdId string) int64 {
	return 4000
}