package engine

import (
	"github.com/imkira/go-observer"
	"sirlab.de/go/knyt/syncdata"
	"time"
)

func NewEngine() *Engine {
	engine := Engine{
		versionRef: 0,
		obs:        observer.NewProperty(syncdata.SyncData{}),
		notify:     make(chan bool, 2),
	}

	return &engine
}

func (eng *Engine) Run(populateSyncDataCb PopulateSyncDataCb) {
	for {
		select {
		case <-eng.notify:
			// nop
		case <-time.After(15 * time.Second):
			// nop
		}

		eng.publish(populateSyncDataCb)
	}
}

func (eng *Engine) Update() {
	eng.notify <- true
}