package configuration

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/authelia/authelia/v4/internal/utils"
)

func TestShouldGenerateConfiguration(t *testing.T) {
	dir := t.TempDir()

	cfg := filepath.Join(dir, "config.yml")

	created, err := EnsureConfigurationExists(cfg)
	assert.NoError(t, err)
	assert.True(t, created)

	_, err = os.Stat(cfg)
	assert.NoError(t, err)
}

func TestNotShouldGenerateConfigurationIfExists(t *testing.T) {
	dir := t.TempDir()

	cfg := filepath.Join(dir, "config.yml")

	created, err := EnsureConfigurationExists(cfg)
	assert.NoError(t, err)
	assert.True(t, created)

	created, err = EnsureConfigurationExists(cfg)
	assert.NoError(t, err)
	assert.False(t, created)

	_, err = os.Stat(cfg)
	assert.NoError(t, err)
}

func TestShouldNotGenerateConfigurationOnFSAccessDenied(t *testing.T) {
	if runtime.GOOS == constWindows {
		t.Skip("skipping test due to being on windows")
	}

	dir := t.TempDir()

	assert.NoError(t, os.Mkdir(filepath.Join(dir, "zero"), 0000))

	cfg := filepath.Join(dir, "zero", "config.yml")

	created, err := EnsureConfigurationExists(cfg)
	assert.EqualError(t, err, fmt.Sprintf("error occurred generating configuration: stat %s: permission denied", cfg))
	assert.False(t, created)
}

func TestShouldNotGenerateConfiguration(t *testing.T) {
	dir := t.TempDir()

	cfg := filepath.Join(dir, "..", "not-a-dir", "config.yml")

	created, err := EnsureConfigurationExists(cfg)

	expectedErr := fmt.Sprintf(utils.GetExpectedErrTxt("pathnotfound"), cfg)

	assert.EqualError(t, err, fmt.Sprintf(errFmtGenerateConfiguration, expectedErr))
	assert.False(t, created)
}