// Copyright (c) 2022 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 app

import (
	"net/http/cookiejar"
	"net/url"
	"os"
	"path/filepath"
	"runtime"
	"testing"

	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
	"github.com/ProtonMail/proton-bridge/v3/internal/cookies"
	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
	"github.com/stretchr/testify/require"
)

func TestMigratePrefsToVault(t *testing.T) {
	// Create a new vault.
	vault, corrupt, err := vault.New(t.TempDir(), t.TempDir(), []byte("my secret key"))
	require.NoError(t, err)
	require.False(t, corrupt)

	// load the old prefs file.
	b, err := os.ReadFile(filepath.Join("testdata", "prefs.json"))
	require.NoError(t, err)

	// Migrate the old prefs file to the new vault.
	require.NoError(t, migratePrefsToVault(vault, b))

	// Check that the IMAP and SMTP prefs are migrated.
	require.Equal(t, 2143, vault.GetIMAPPort())
	require.Equal(t, 2025, vault.GetSMTPPort())
	require.True(t, vault.GetSMTPSSL())

	// Check that the update channel is migrated.
	require.True(t, vault.GetAutoUpdate())
	require.Equal(t, updater.EarlyChannel, vault.GetUpdateChannel())
	require.Equal(t, 0.4849529004202015, vault.GetUpdateRollout())

	// Check that the app settings have been migrated.
	require.False(t, vault.GetFirstStart())
	require.True(t, vault.GetFirstStartGUI())
	require.Equal(t, "blablabla", vault.GetColorScheme())
	require.Equal(t, "2.3.0+git", vault.GetLastVersion().String())
	require.True(t, vault.GetAutostart())

	// Check that the other app settings have been migrated.
	require.Equal(t, 16, vault.SyncWorkers())
	require.Equal(t, 16, vault.SyncAttPool())
	require.False(t, vault.GetProxyAllowed())
	require.False(t, vault.GetShowAllMail())

	// Check that the cookies have been migrated.
	jar, err := cookiejar.New(nil)
	require.NoError(t, err)

	cookies, err := cookies.NewCookieJar(jar, vault)
	require.NoError(t, err)

	url, err := url.Parse("https://api.protonmail.ch")
	require.NoError(t, err)

	// There should be a cookie for the API.
	require.NotEmpty(t, cookies.Cookies(url))
}

func TestKeychainMigration(t *testing.T) {
	// migration needed only for linux
	if runtime.GOOS != "linux" {
		return
	}

	tmpDir := t.TempDir()
	os.Setenv("XDG_CONFIG_HOME", tmpDir)

	oldCacheDir := filepath.Join(tmpDir, "protonmail", "bridge")
	require.NoError(t, os.MkdirAll(oldCacheDir, 0o700))

	oldPrefs, err := os.ReadFile(filepath.Join("testdata", "prefs.json"))
	require.NoError(t, err)

	require.NoError(t, os.WriteFile(
		filepath.Join(oldCacheDir, "prefs.json"),
		oldPrefs, 0o600,
	))

	locations := locations.New(bridge.NewTestLocationsProvider(tmpDir), "config-name")

	settingsFolder, err := locations.ProvideSettingsPath()
	require.NoError(t, err)

	keychainName, err := vault.GetHelper(settingsFolder)
	require.NoError(t, err)
	require.Equal(t, "", keychainName)

	require.NoError(t, migrateKeychainHelper(locations))

	keychainName, err = vault.GetHelper(settingsFolder)
	require.NoError(t, err)
	require.Equal(t, "secret-service", keychainName)

	require.NoError(t, vault.SetHelper(settingsFolder, "different"))

	// Calling migration again will not overwrite
	require.NoError(t, migrateKeychainHelper(locations))
	keychainName, err = vault.GetHelper(settingsFolder)
	require.NoError(t, err)
	require.Equal(t, "different", keychainName)

}