etesync-android/app/src/main/java/com/etesync/syncadapter/NotificationHelper.kt

package com.etesync.syncadapter

import android.app.Activity
import android.app.NotificationChannel
import android.app.NotificationManager
import android.app.PendingIntent
import android.content.Context
import android.content.Intent
import android.database.sqlite.SQLiteException
import android.net.Uri
import android.os.Build
import android.os.Bundle
import androidx.core.app.NotificationCompat
import androidx.core.app.NotificationManagerCompat
import at.bitfire.ical4android.CalendarStorageException
import at.bitfire.vcard4android.ContactsStorageException
import com.etesync.syncadapter.journalmanager.Exceptions
import com.etesync.syncadapter.ui.AccountSettingsActivity
import com.etesync.syncadapter.ui.DebugInfoActivity
import com.etesync.syncadapter.ui.WebViewActivity
import java.util.logging.Level

class NotificationHelper(internal val context: Context, internal val notificationTag: String, internal val notificationId: Int) {

    internal val notificationManager: NotificationManagerCompat
    lateinit var detailsIntent: Intent
        internal set
    internal var messageString: Int = 0

    private var throwable: Throwable? = null

    init {
        this.notificationManager = NotificationManagerCompat.from(context)
    }

    fun setThrowable(e: Throwable) {
        throwable = e
        if (e is Exceptions.UnauthorizedException) {
            App.log.log(Level.SEVERE, "Not authorized anymore", e)
            messageString = R.string.sync_error_unauthorized
        } else if (e is Exceptions.UserInactiveException) {
            App.log.log(Level.SEVERE, "User inactive")
            messageString = R.string.sync_error_user_inactive
        } else if (e is Exceptions.ServiceUnavailableException) {
            App.log.log(Level.SEVERE, "Service unavailable")
            messageString = R.string.sync_error_unavailable
        } else if (e is Exceptions.ReadOnlyException) {
            App.log.log(Level.SEVERE, "Journal is read only", e)
            messageString = R.string.sync_error_journal_readonly
        } else if (e is Exceptions.HttpException) {
            App.log.log(Level.SEVERE, "HTTP Exception during sync", e)
            messageString = R.string.sync_error_http_dav
        } else if (e is CalendarStorageException || e is ContactsStorageException || e is SQLiteException) {
            App.log.log(Level.SEVERE, "Couldn't access local storage", e)
            messageString = R.string.sync_error_local_storage
        } else if (e is Exceptions.IntegrityException) {
            App.log.log(Level.SEVERE, "Integrity error", e)
            messageString = R.string.sync_error_integrity
        } else {
            App.log.log(Level.SEVERE, "Unknown sync error", e)
            messageString = R.string.sync_error
        }

        detailsIntent = Intent(context, NotificationHandlerActivity::class.java)
        detailsIntent.putExtra(DebugInfoActivity.KEY_THROWABLE, e)
        detailsIntent.data = Uri.parse("uri://" + javaClass.name + "/" + notificationTag)
    }

    fun notify(title: String, state: String) {
        val message = context.getString(messageString, state)
        notify(title, message, null, detailsIntent)
    }

    @JvmOverloads
    fun notify(title: String, content: String, bigText: String?, intent: Intent, _icon: Int = -1) {
        var icon = _icon
        createNotificationChannel()
        val builder = NotificationCompat.Builder(context)
        val category = if (throwable == null)
            NotificationCompat.CATEGORY_STATUS
        else
            NotificationCompat.CATEGORY_ERROR
        if (icon == -1) {
            //Check if error was configured
            if (throwable == null) {
                icon = R.drawable.ic_sync_dark
            } else {
                icon = R.drawable.ic_error_light
            }
        }

        builder.setLargeIcon(App.getLauncherBitmap(context))
                .setContentTitle(title)
                .setContentText(content)
                .setChannelId(CHANNEL_ID)
                .setAutoCancel(true)
                .setCategory(category)
                .setSmallIcon(icon)
                .setContentIntent(PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT))

        if (bigText != null)
            builder.setStyle(NotificationCompat.BigTextStyle()
                    .bigText(bigText))

        notificationManager.notify(notificationTag, notificationId, builder.build())
    }


    fun cancel() {
        notificationManager.cancel(notificationTag, notificationId)
    }

    class NotificationHandlerActivity : Activity() {

        public override fun onCreate(savedBundle: Bundle?) {
            super.onCreate(savedBundle)
            val extras = intent.extras
            val e = extras!!.get(DebugInfoActivity.KEY_THROWABLE) as Exception

            val detailsIntent: Intent
            if (e is Exceptions.UnauthorizedException) {
                detailsIntent = Intent(this, AccountSettingsActivity::class.java)
            } else if (e is Exceptions.UserInactiveException) {
                WebViewActivity.openUrl(this, Constants.dashboard)
                return
            } else if (e is AccountSettings.AccountMigrationException) {
                WebViewActivity.openUrl(this, Constants.faqUri.buildUpon().encodedFragment("account-migration-error").build())
                return
            } else {
                detailsIntent = Intent(this, DebugInfoActivity::class.java)
            }
            detailsIntent.putExtras(intent.extras!!)
            startActivity(detailsIntent)
        }

        public override fun onStop() {
            super.onStop()
            finish()
        }
    }

    private fun createNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val name = context.getString(R.string.notification_channel_name)
            val channel = NotificationChannel(CHANNEL_ID, name, NotificationManager.IMPORTANCE_LOW)
            val notificationManager = context.getSystemService(NotificationManager::class.java)
            notificationManager!!.createNotificationChannel(channel)
        }
    }

    companion object {
        private val CHANNEL_ID = "EteSync_default"
    }

}