package system

import (
	"time"

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

var timerQuery *ecs.Query = ecs.NewQuery(filter.Contains(components.SystemTimerComponent))

// 系统时钟操作
type TimerSystem struct {
}

func NewTimerSystem() *TimerSystem {
	return &TimerSystem{}
}

// world 执行
func (me *TimerSystem) Update(w ecs.World) {
	if e, ok := timerQuery.First(w); ok {
		timer := components.SystemTimerComponent.Get(e)
		timer.Tick(w.Tick())
	}
}

// 重置world时间
func ResetWorldTimer(w ecs.World, time time.Time) {
	if e, ok := timerQuery.First(w); ok {
		timer := components.SystemTimerComponent.Get(e)
		timer.ResetTime(time)
	}
}

// 获取world当前时间
func GetWorldNow(w ecs.World) *time.Time {
	if e, ok := timerQuery.First(w); ok {
		timer := components.SystemTimerComponent.Get(e)
		now := timer.Now()
		return &now
	}
	return nil
}