//go:build integration

package integration

import (
	"fmt"
	"os"
	"os/exec"
	"testing"

	"github.com/edgelesssys/constellation/state/mapper"
	"github.com/martinjungblut/go-cryptsetup"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

const (
	devicePath   = "testDevice"
	mappedDevice = "mappedDevice"
)

func setup() error {
	return exec.Command("/bin/dd", "if=/dev/zero", fmt.Sprintf("of=%s", devicePath), "bs=64M", "count=1").Run()
}

func teardown() error {
	return exec.Command("/bin/rm", "-f", devicePath).Run()
}

func TestMain(m *testing.M) {
	if os.Getuid() != 0 {
		fmt.Printf("This test suite requires root privileges, as libcrypsetup uses the kernel's device mapper.\n")
		os.Exit(1)
	}

	result := m.Run()
	os.Exit(result)
}

func TestMapper(t *testing.T) {
	cryptsetup.SetDebugLevel(cryptsetup.CRYPT_LOG_VERBOSE)
	cryptsetup.SetLogCallback(func(level int, message string) { fmt.Println(message) })
	assert := assert.New(t)
	require := require.New(t)
	require.NoError(setup(), "failed to setup test disk")
	defer func() { require.NoError(teardown(), "failed to delete test disk") }()

	mapper, err := mapper.New(devicePath)
	require.NoError(err, "failed to initialize crypt device")
	defer func() { require.NoError(mapper.Close(), "failed to close crypt device") }()

	passphrase := "unit-test"
	require.NoError(mapper.FormatDisk(passphrase), "failed to format disk")
	require.NoError(mapper.MapDisk(mappedDevice, passphrase), "failed to map disk")

	require.NoError(mapper.UnmapDisk(mappedDevice), "failed to remove disk mapping")
	assert.Error(mapper.MapDisk(mappedDevice, "invalid-passphrase"), "was able to map disk with incorrect passphrase")
}