package system

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

var psdQuery = ecs.NewQuery(filter.Contains(components.ComDeviceIdentity, components.ComPsdState, components.ComEntityTagHandler))

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

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

// world 执行
func (me *PsdSystem) Update(world ecs.World) {
	me.updatePsdCell(world)
	me.updatePsd(world)
}

// 车站单侧屏蔽门
func (me *PsdSystem) updatePsd(world ecs.World) {
	psdQuery.Each(world, func(e *ecs.Entry) {
		psdTag := components.ComEntityTagHandler.Get(e).Tag
		_, ok := me.psdTagMap[psdTag]
		if !ok {
			me.psdTagMap[psdTag] = make([]*ecs.Query, 2)
			//psd的所有cell查询
			psdCellQuery := ecs.NewQuery(filter.Contains(psdTag))
			me.psdTagMap[psdTag][0] = psdCellQuery
			//psd的所有cell中的操作查询
			psdCellOperateQuery := ecs.NewQuery(filter.Contains(psdTag, components.ComPsdCellOperating))
			me.psdTagMap[psdTag][1] = psdCellOperateQuery
		}
		var allClosed bool = true
		var allOpened bool = true
		me.psdTagMap[psdTag][0].Each(world, func(e *ecs.Entry) {
			cellState := components.ComPsdCellState.Get(e)
			if allClosed {
				if cellState.CloseRate < 100 {
					allClosed = false
				}
			}
			if allOpened {
				if cellState.CloseRate > 0 {
					allOpened = false
				}
			}
		})
		//
		psdState := components.ComPsdState.Get(e)
		psdState.AllClosed = allClosed
		psdState.AllOpened = allOpened
	})
}

const (
	//把时间映射到距离，1000ms<=>1000mm
	//注意距离不是门的真实宽度，仅用于门开关相关计算
	//门移动最大路程3000mm
	pSD_CELL_LEN = 3000
	//cell门移动速度，单位mm/ms
	pSD_CELL_MOVE_SPEED = 1
)

// 单个门
func (me *PsdSystem) updatePsdCell(world ecs.World) {
	for _, psdTagQueries := range me.psdTagMap {
		//遍历某个车站单侧的所有单个门的操作
		psdTagQueries[1].Each(world, func(e *ecs.Entry) {
			if psdCellOpt := components.ComPsdCellOperating.Get(e); psdCellOpt.Start {
				psdCellState := components.ComPsdCellState.Get(e)
				if psdCellOpt.RemainingDistance <= 0 {
					psdCellOpt.Start = false
					psdCellOpt.RemainingDistance = 0
					e.RemoveComponent(components.ComPsdCellOperating)
				} else {
					psdCellOpt.RemainingDistance -= int64(pSD_CELL_MOVE_SPEED * world.Tick())
				}
				//
				if psdCellOpt.CloseOperate {
					psdCellState.CloseRate = int32((float32(psdCellOpt.InitDistance+psdCellOpt.SumDistance-psdCellOpt.RemainingDistance) / float32(pSD_CELL_LEN)) * 100)
				} else {
					psdCellState.CloseRate = 100 - int32((float32(psdCellOpt.InitDistance+psdCellOpt.SumDistance-psdCellOpt.RemainingDistance)/float32(pSD_CELL_LEN))*100)
				}
			}
		})
	}
}

// 车站单侧屏蔽门互锁解除操作
func FirePsdInterlockRelease(world ecs.World, psdId string, lockRelease bool) bool {
	var psdEntry *ecs.Entry = nil
	psdQuery.Each(world, func(e *ecs.Entry) {
		if psdId == components.ComDeviceIdentity.Get(e).Id {
			psdEntry = e
		}
	})
	//
	if psdEntry == nil {
		return false
	}
	components.ComPsdState.Get(psdEntry).InterlockReleased = lockRelease
	//
	return true
}

// 车站单侧屏蔽门操作
// closeOpt true-关门操作，false-开门操作
func FirePsdMove(world ecs.World, psdId string, closeOpt bool) bool {
	var psdEntry *ecs.Entry = nil
	psdQuery.Each(world, func(e *ecs.Entry) {
		if psdId == components.ComDeviceIdentity.Get(e).Id {
			psdEntry = e
		}
	})
	//
	if psdEntry == nil {
		return false
	}
	//
	var closeRate int
	if closeOpt {
		closeRate = 100
	} else {
		closeRate = 0
	}
	//
	psdTag := components.ComEntityTagHandler.Get(psdEntry).Tag
	psdCellQuery := ecs.NewQuery(filter.Contains(psdTag))
	psdCellQuery.Each(world, func(e *ecs.Entry) {
		psdCellId := components.ComDeviceIdentity.Get(e).Id
		firePsdCellMove0(world, psdEntry, psdCellId, closeRate)
	})
	//
	return true
}

// 单个门操作
// psdId 单侧屏蔽门id
// psdCellId 屏蔽门cell的id
// closeRate 门最终关闭的百分比，0-完全开门，100-完全关门
func FirePsdCellMove(world ecs.World, psdId string, psdCellId string, closeRate int) bool {
	var psdEntry *ecs.Entry = nil
	psdQuery.Each(world, func(e *ecs.Entry) {
		if psdId == components.ComDeviceIdentity.Get(e).Id {
			psdEntry = e
		}
	})
	return firePsdCellMove0(world, psdEntry, psdCellId, closeRate)
}
func firePsdCellMove0(world ecs.World, psdEntry *ecs.Entry, psdCellId string, closeRate int) bool {
	//
	if psdEntry == nil {
		return false
	}
	//
	psdTag := components.ComEntityTagHandler.Get(psdEntry).Tag
	psdCellQuery := ecs.NewQuery(filter.Contains(psdTag))
	var psdCellEntry *ecs.Entry = nil
	psdCellQuery.Each(world, func(e *ecs.Entry) {
		if psdCellId == components.ComDeviceIdentity.Get(e).Id {
			psdCellEntry = e
		}
	})
	if psdCellEntry == nil {
		return false
	}
	//
	psdCellState := components.ComPsdCellState.Get(psdCellEntry)
	if closeRate == int(psdCellState.CloseRate) {
		return true
	}
	// 判断是关门还是开门操作
	close := closeRate > int(psdCellState.CloseRate)
	//
	if !psdCellEntry.HasComponent(components.ComPsdCellOperating) {
		psdCellEntry.AddComponent(components.ComPsdCellOperating)
	}
	//
	var initDistance int64
	var sumDistance int64
	if close {
		initDistance = int64(float32(pSD_CELL_LEN) * (float32(psdCellState.CloseRate) / float32(100)))
		sumDistance = int64(float32(pSD_CELL_LEN) * (float32(closeRate-int(psdCellState.CloseRate)) / float32(100)))
	} else {
		initDistance = int64(float32(pSD_CELL_LEN) * (float32(100-psdCellState.CloseRate) / float32(100)))
		sumDistance = int64(float32(pSD_CELL_LEN) * (float32(int(psdCellState.CloseRate)-closeRate) / float32(100)))
	}
	//
	*(components.ComPsdCellOperating.Get(psdCellEntry)) = state.PsdCellOperating{
		Start:             true,
		CloseOperate:      close,
		InitDistance:      initDistance,
		SumDistance:       sumDistance,
		RemainingDistance: sumDistance,
	}
	//
	return true
}