package main

import (
	"encoding/json"
	"io/ioutil"
	"log"
	"os"
)

func loadNotifiedEntries() {
	data, err := ioutil.ReadFile(notifiedFilePath)
	if err != nil {
		if os.IsNotExist(err) {
			return // No file, no entries notified yet
		}
		log.Fatalf("Error reading notified entries file: %v", err)
	}

	err = json.Unmarshal(data, &notifiedEntries)
	if err != nil {
		log.Fatalf("Error parsing notified entries file: %v", err)
	}
}

func saveNotifiedEntry(entryNumber int) {
	notifiedEntries[entryNumber] = true
	data, err := json.Marshal(notifiedEntries)
	if err != nil {
		log.Fatalf("Error serializing notified entries: %v", err)
	}

	err = ioutil.WriteFile(notifiedFilePath, data, 0644)
	if err != nil {
		log.Fatalf("Error writing notified entries file: %v", err)
	}
}