clear cookie if the app is updated

import android.content.Context

import android.content.Intent

import android.content.SyncResult

import android.content.pm.PackageManager

import android.net.Uri

import android.os.RemoteException

import android.provider.CalendarContract

import android.provider.ContactsContract

import androidx.core.app.NotificationCompat

import androidx.core.app.NotificationManagerCompat

import androidx.core.content.edit

import androidx.preference.PreferenceManager

import at.bitfire.dav4jvm.*

import at.bitfire.dav4jvm.exception.*

import at.bitfire.dav4jvm.property.GetCTag

     * Call performSync with default retry values

     */

    fun performSync() {

        val prefs = PreferenceManager.getDefaultSharedPreferences(context)

        val currentVersion = getCurrentVersionCode(context)

        val savedVersion = prefs.getInt("LAST_VERSION_CODE", 0)

        if (savedVersion != currentVersion) {

            Logger.log.warning("App has been updated! Previous: $savedVersion, Current: $currentVersion")

            prefs.edit {

                putInt("LAST_VERSION_CODE", currentVersion)

            }

            // Clear cookie since the app is updated.

            accountSettings.clearCookie()

            return

        }

        val credentials = accountSettings.credentials()

        if (credentials.passwordNeedsUpdate) {

            val exception = UnauthorizedException(context.getString(R.string.sync_error_authentication_failed))

        refreshAuthTokenAndSync(authState)

    }

    private fun getCurrentVersionCode(context: Context): Int {

        return try {

            val packageInfo = context.packageManager.getPackageInfo(context.packageName, 0)

            packageInfo.versionCode

        } catch (e: PackageManager.NameNotFoundException) {

            0

        }

    }

    private fun refreshAuthTokenAndSync(authState: AuthState) {

        val tokenRequest = authState.createTokenRefreshRequest()

        val clientSecretString = accountSettings.credentials().clientSecret