package vault

import (
	"bytes"
	"slices"
	"testing"

	"github.com/tobischo/gokeepasslib/v3"
)

func TestNewSecurityConfigCreatesRequestedCipherAndKDF(t *testing.T) {
	t.Parallel()

	config, err := NewSecurityConfig(SecuritySettings{Cipher: CipherAES256, KDF: KDFAES})
	if err != nil {
		t.Fatalf("NewSecurityConfig() error = %v", err)
	}
	if !slices.Equal(config.Header.FileHeaders.CipherID, gokeepasslib.CipherAES) {
		t.Fatalf("CipherID = %x, want %x", config.Header.FileHeaders.CipherID, gokeepasslib.CipherAES)
	}
	if !slices.Equal(config.Header.FileHeaders.KdfParameters.UUID, gokeepasslib.KdfAES4) {
		t.Fatalf("KDF UUID = %x, want %x", config.Header.FileHeaders.KdfParameters.UUID, gokeepasslib.KdfAES4)
	}
}

func TestApplySecuritySettingsPreservesRequestedChoicesAcrossSave(t *testing.T) {
	t.Parallel()

	config, err := NewSecurityConfig(SecuritySettings{Cipher: CipherChaCha20, KDF: KDFArgon2})
	if err != nil {
		t.Fatalf("NewSecurityConfig() error = %v", err)
	}
	config, err = ApplySecuritySettings(config, SecuritySettings{Cipher: CipherAES256, KDF: KDFAES})
	if err != nil {
		t.Fatalf("ApplySecuritySettings() error = %v", err)
	}

	var encoded bytes.Buffer
	if err := SaveKDBXWithConfigAndKey(&encoded, Model{}, MasterKey{Password: "correct horse battery staple"}, config); err != nil {
		t.Fatalf("SaveKDBXWithConfigAndKey() error = %v", err)
	}
	_, reloadedConfig, err := LoadKDBXWithConfig(bytes.NewReader(encoded.Bytes()), MasterKey{Password: "correct horse battery staple"})
	if err != nil {
		t.Fatalf("LoadKDBXWithConfig() error = %v", err)
	}
	got := DetectSecuritySettings(reloadedConfig)
	if got.Cipher != CipherAES256 || got.KDF != KDFAES {
		t.Fatalf("DetectSecuritySettings() = %#v, want aes256/aes-kdf", got)
	}
}