package crypto

import (
	"github.com/ethereum/go-ethereum/ethdb"
	// "io/ioutil"
	"fmt"
	"os"
	"path"
	"testing"
)

// test if persistence layer works
func TestDBKeyManager(t *testing.T) {
	memdb, _ := ethdb.NewMemDatabase()
	keyManager0 := NewDBKeyManager(memdb)
	err := keyManager0.Init("", 0, false)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	keyManager1 := NewDBKeyManager(memdb)
	err = keyManager1.Init("", 0, false)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
		t.Error("Expected private keys %x, %x, to be identical via db persistence", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	}
	err = keyManager1.Init("", 0, true)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	if string(keyManager0.PrivateKey()) == string(keyManager1.PrivateKey()) {
		t.Error("Expected private keys %x, %x, to be be different despite db persistence if force generate", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	}
}

func TestFileKeyManager(t *testing.T) {
	basedir0 := "/tmp/ethtest0"
	os.RemoveAll(basedir0)
	os.Mkdir(basedir0, 0777)

	keyManager0 := NewFileKeyManager(basedir0)
	err := keyManager0.Init("", 0, false)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}

	keyManager1 := NewFileKeyManager(basedir0)

	err = keyManager1.Init("", 0, false)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
		t.Error("Expected private keys %x, %x, to be identical via db persistence", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	}

	err = keyManager1.Init("", 0, true)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	if string(keyManager0.PrivateKey()) == string(keyManager1.PrivateKey()) {
		t.Error("Expected private keys %x, %x, to be be different despite db persistence if force generate", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	}
}

// cursor errors
func TestCursorErrors(t *testing.T) {
	memdb, _ := ethdb.NewMemDatabase()
	keyManager0 := NewDBKeyManager(memdb)
	err := keyManager0.Init("", 0, false)
	err = keyManager0.Init("", 1, false)
	if err == nil {
		t.Error("Expected cursor error")
	}
	err = keyManager0.SetCursor(1)
	if err == nil {
		t.Error("Expected cursor error")
	}
}

func TestExportImport(t *testing.T) {
	memdb, _ := ethdb.NewMemDatabase()
	keyManager0 := NewDBKeyManager(memdb)
	err := keyManager0.Init("", 0, false)
	basedir0 := "/tmp/ethtest0"
	os.RemoveAll(basedir0)
	os.Mkdir(basedir0, 0777)
	keyManager0.Export(basedir0)

	keyManager1 := NewFileKeyManager(basedir0)
	err = keyManager1.Init("", 0, false)
	if err != nil {
		t.Error("Unexpected error: ", err)
	}
	fmt.Printf("keyRing: %v\n", keyManager0.KeyPair())
	fmt.Printf("keyRing: %v\n", keyManager1.KeyPair())
	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
		t.Error("Expected private keys %x, %x, to be identical via export to filestore basedir", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	}
	path.Join("")

	// memdb, _ = ethdb.NewMemDatabase()
	// keyManager2 := NewDBKeyManager(memdb)
	// err = keyManager2.InitFromSecretsFile("", 0, path.Join(basedir0, "default.prv"))
	// if err != nil {
	// 	t.Error("Unexpected error: ", err)
	// }
	// if string(keyManager0.PrivateKey()) != string(keyManager2.PrivateKey()) {
	// 	t.Error("Expected private keys %s, %s, to be identical via export/import prv", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	// }

	// memdb, _ = ethdb.NewMemDatabase()
	// keyManager3 := NewDBKeyManager(memdb)
	// err = keyManager3.InitFromSecretsFile("", 0, path.Join(basedir0, "default.mne"))
	// if err != nil {
	// 	t.Error("Unexpected error: ", err)
	// }
	// if string(keyManager0.PrivateKey()) != string(keyManager3.PrivateKey()) {
	// 	t.Error("Expected private keys %s, %s, to be identical via export/import mnemonic file", keyManager0.PrivateKey(), keyManager1.PrivateKey())
	// }
}