package main

import (
	"epoint/dsakey"
	"crypto/openpgp"
	"log"
	"os"
	"time"
)

const usage = "usage: ./genkey name comment email seckeyfile pubkeyfile < seed"

func serialize(e *openpgp.Entity, sk, pk string) (err error) {
	f, err := os.Create(sk)
	if err != nil {
		return
	}
	err = e.SerializePrivate(f)
	if err != nil {
		return
	}
	err = f.Sync()
	if err != nil {
		return
	}
	err = f.Close()
	if err != nil {
		return
	}
	// public key
	f, err = os.Create(pk)
	if err != nil {
		return
	}
	/*
		// TODO: maybe Serialize should do this internally
		for _, ident := range e.Identities {
			err = ident.SelfSignature.SignUserId(ident.UserId.Id, e.PrimaryKey, e.PrivateKey)
			if err != nil {
				return
			}
		}
		for _, subkey := range e.Subkeys {
			err = subkey.Sig.SignKey(subkey.PublicKey, e.PrivateKey)
			if err != nil {
				return
			}
		}
	*/
	err = e.Serialize(f)
	if err != nil {
		return
	}
	err = f.Sync()
	if err != nil {
		return
	}
	err = f.Close()
	return
}

func main() {
	if len(os.Args) != 6 {
		log.Fatal(usage)
	}
	b := make([]byte, 1000)
	n, err := os.Stdin.Read(b)
	if err != nil {
		log.Print(err)
		log.Fatal(usage)
	}
	key := dsakey.PrivKey(b[:n])
	e, err := dsakey.NewEntity(key, time.Seconds(), os.Args[1], os.Args[2], os.Args[3])
	if err != nil {
		log.Fatal(err)
	}
	err = serialize(e, os.Args[4], os.Args[5])
	if err != nil {
		log.Fatal(err)
	}
}