// Copyright (c) 2023 Proton AG
//
// This file is part of Proton Mail Bridge.
//
// Proton Mail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Proton Mail Bridge is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.

package logging

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

	"github.com/stretchr/testify/require"
)

func TestGetLogTime(t *testing.T) {
	sessionID := NewSessionID()
	fp := defaultFileProvider(os.TempDir(), sessionID, "bridge-test")
	wc, err := fp(0)
	require.NoError(t, err)
	file, ok := wc.(*os.File)
	require.True(t, ok)

	sessionIDTime := sessionID.toTime()
	require.False(t, sessionIDTime.IsZero())
	logTime := getLogTime(filepath.Base(file.Name()))
	require.False(t, logTime.IsZero())
	require.Equal(t, sessionIDTime, logTime)
}

func TestMatchLogName(t *testing.T) {
	bridgeLog := "20230602_094633102_000_bridge_v3.0.99+git_5b650b1be3.log"
	crashLog := "20230602_094633102_000_bridge_v3.0.99+git_5b650b1be3_crash.log"
	guiLog := "20230602_094633102_000_gui_v3.0.99+git_5b650b1be3.log"
	launcherLog := "20230602_094633102_000_launcher_v3.0.99+git_5b650b1be3.log"
	require.True(t, MatchBridgeLogName(bridgeLog))
	require.False(t, MatchGUILogName(bridgeLog))
	require.False(t, MatchLauncherLogName(bridgeLog))
	require.True(t, MatchBridgeLogName(crashLog))
	require.False(t, MatchGUILogName(crashLog))
	require.False(t, MatchLauncherLogName(crashLog))
	require.False(t, MatchBridgeLogName(guiLog))
	require.True(t, MatchGUILogName(guiLog))
	require.False(t, MatchLauncherLogName(guiLog))
	require.False(t, MatchBridgeLogName(launcherLog))
	require.False(t, MatchGUILogName(launcherLog))
	require.True(t, MatchLauncherLogName(launcherLog))
}

// The test below is temporarily disabled, and will be restored when implementing new retention policy GODT-2668

// TestClearLogs tests that clearLogs removes only bridge old log files keeping last three of them.
// func TestClearLogs(t *testing.T) {
//	dir := t.TempDir()
//
//	// Create some old log files.
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "other.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.4.7_debe87f2f5_0000000001.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.4.8_debe87f2f5_0000000002.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.4.9_debe87f2f5_0000000003.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.0_debe87f2f5_0000000004.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.1_debe87f2f5_0000000005.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.2_debe87f2f5_0000000006.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.3_debe87f2f5_0000000007.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.4_debe87f2f5_0000000008.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.5_debe87f2f5_0000000009.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.6_debe87f2f5_0000000010.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.7_debe87f2f5_0000000011.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.8_debe87f2f5_0000000012.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.12_debe87f2f5_0000000013.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.9_debe87f2f5_0000000014.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.10_debe87f2f5_0000000015.log"), []byte("Hello"), 0o755))
//	require.NoError(t, os.WriteFile(filepath.Join(dir, "v2.5.11_debe87f2f5_0000000016.log"), []byte("Hello"), 0o755))
//
//	// Clear the logs.
//	require.NoError(t, clearLogs(dir, 3, 0))
//
//	// We should only clear matching files, and keep the 3 most recent ones.
//	checkFileNames(t, dir, []string{
//		"other.log",
//		"v2.5.9_debe87f2f5_0000000014.log",
//		"v2.5.10_debe87f2f5_0000000015.log",
//		"v2.5.11_debe87f2f5_0000000016.log",
//	})
// }
//
// func checkFileNames(t *testing.T, dir string, expectedFileNames []string) {
//	require.ElementsMatch(t, expectedFileNames, getFileNames(t, dir))
// }
//
// func getFileNames(t *testing.T, dir string) []string {
//	files, err := os.ReadDir(dir)
//	require.NoError(t, err)
//
//	fileNames := []string{}
//	for _, file := range files {
//		fileNames = append(fileNames, file.Name())
//		if file.IsDir() {
//			subDir := filepath.Join(dir, file.Name())
//			subFileNames := getFileNames(t, subDir)
//			for _, subFileName := range subFileNames {
//				fileNames = append(fileNames, file.Name()+"/"+subFileName)
//			}
//		}
//	}
//	return fileNames
// }