package main

import (
	"log"
	"time"
)

func WaitUntilNextUpdate() {
	now := time.Now()
	dur := now.Truncate(time.Minute).Add(time.Minute).Sub(now)
	log.Println("sleeping for", dur.Round(time.Second))
	time.Sleep(dur)
}

func main() {
	defer db.Close()
	for {
		rss, err := FetchStackerNewsRssFeed()
		if err != nil {
			log.Println(err)
			WaitUntilNextUpdate()
			continue
		}

		for _, item := range rss.Channel.Items {
			if ItemExists(item) {
				log.Printf("item %s already exists. skipping.\n", item.Guid)
				continue
			}
			err := SendItemToTelegram(&item)
			if err != nil {
				log.Println(err)
				continue
			}
			SaveItem(item)
		}

		WaitUntilNextUpdate()
	}
}