package main

import (
  "git.domandoman.xyz/doman/certchecker"
	"bufio"
	"flag"
	"fmt"
	"os"
  "sync"
)

func main() {
	notifyExpirationDays := *flag.Int("notify", 7, "Notify when the certificate expires in less than this number of days")
	flag.Parse()
	domains := flag.Args()

	if len(domains) == 0 {
		stat, _ := os.Stdin.Stat()
		scanner := bufio.NewScanner(os.Stdin)

		if (stat.Mode() & os.ModeCharDevice) == 0 {
			for scanner.Scan() {
				domains = append(domains, scanner.Text())
			}
		} else {
			fmt.Println("Enter a domain to check:")
			scanner.Scan()
			domains = append(domains, scanner.Text())
		}

		err := scanner.Err()
		if err != nil {
			fmt.Fprintln(os.Stderr, "reading standard input:", err)
		}
	}

  var wg sync.WaitGroup
  defer wg.Wait()

  for _, domain := range domains {
    wg.Add(1)
    go func() {
      err := certchecker.Check(domain, notifyExpirationDays)
      if err != nil {
        fmt.Printf("%s: %v\n", domain, err)
      } else{
        fmt.Printf("%s: OK\n", domain)
      }
      wg.Done()
    } ()
  }
}