package system

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

// 按钮系统
type ButtonSystem struct {
}

// 按钮组件
var btnIdCom, btnStaCom, btnPreOperCom, btnConOperCom = components.DeviceIdentityComponent,
	components.ButtonStateComponent, components.ButtonPressOperatingComponent, components.ButtonConfirmOperatingComponent

// 查询
var btnIdQuery = ecs.NewQuery(filter.Contains(btnIdCom))
var btnUpdateQuery = ecs.NewQuery(filter.Contains(btnStaCom, btnPreOperCom, btnConOperCom))

func NewButtonSystem() *ButtonSystem {
	return &ButtonSystem{}
}

// 按钮操作
func PressDownAndUpButton(w ecs.World, btnId string, down bool) bool {
	buttonEntry := queryButton(w, btnId)
	if buttonEntry == nil {
		return false
	}
	t, b := getButtonBaseInfo(btnId)
	if !buttonEntry.HasComponent(btnPreOperCom) { // 操作组件
		buttonEntry.AddComponent(btnPreOperCom)
	}
	preOper := btnPreOperCom.Get(buttonEntry)
	preOper.Start, preOper.Down, preOper.NeedConfirm, preOper.OperateTime = true, down, b, t
	return true
}

// 确认操作
func ConfirmButton(w ecs.World, btnId string, confirm bool) bool {
	buttonEntry := queryButton(w, btnId)
	if buttonEntry == nil {
		return false
	}
	if !buttonEntry.HasComponent(btnConOperCom) { // 确认组件
		buttonEntry.AddComponent(btnConOperCom)
	}
	conOper := btnConOperCom.Get(buttonEntry)
	conOper.Confirm, conOper.Cancel = confirm, !confirm
	return true
}

// 更新按钮状态
func (bs *ButtonSystem) Update(w ecs.World) {
	btnUpdateQuery.Each(w, func(e *ecs.Entry) {
		if e.HasComponent(btnPreOperCom) {
			btnPreOper := btnPreOperCom.Get(e)
			if btnPreOper.Start { // 按钮开始操作
				if btnPreOper.OperateTime <= 0 { // 按钮操作时间大于0
					btnPreOper.Start, btnPreOper.OperateTime = false, 0
				} else {
					btnPreOper.OperateTime -= int64(w.Tick())
					if btnPreOper.NeedConfirm {
						conOper := btnConOperCom.Get(e)
						if e.HasComponent(btnConOperCom) && (conOper.Cancel || conOper.Confirm) {
							if conOper.Confirm {
								btnSta := btnStaCom.Get(e)
								btnSta.PressDown = btnPreOper.Down
							}
							btnPreOper.Start, btnPreOper.OperateTime = false, 0
							conOper.Cancel, conOper.Confirm = false, false
							e.RemoveComponent(btnPreOperCom)
							e.RemoveComponent(btnConOperCom)
						}
					} else {
						btnSta := btnStaCom.Get(e)
						btnSta.PressDown = btnPreOper.Down
						btnPreOper.Start, btnPreOper.OperateTime = false, 0
						e.RemoveComponent(btnPreOperCom)
					}
				}
			} else {
				e.RemoveComponent(btnPreOperCom)
			}
		}
	})
}

// 查找按钮
func queryButton(w ecs.World, btnId string) *ecs.Entry {
	var buttonEntry *ecs.Entry = nil
	btnIdQuery.Each(w, func(e *ecs.Entry) {
		if id := btnIdCom.Get(e).Id; id == btnId {
			buttonEntry = e
		}
	})
	return buttonEntry
}

// 获取按钮设置信息
func getButtonBaseInfo(btnId string) (int64, bool) {
	return 15, false
}