feat(notification): implement Android and iOS APIs (#340)

Cargo.lock

@@ -4927,11 +4927,15 @@ version = "0.1.0"
 dependencies = [
  "log",
  "notify-rust",
+ "rand 0.8.5",
  "serde",
  "serde_json",
+ "serde_repr",
  "tauri",
  "tauri-build",
  "thiserror",
+ "time 0.3.20",
+ "url",
  "win7-notifications",
 ]
 

plugins/notification/Cargo.toml

@@ -16,6 +16,10 @@ serde_json.workspace = true
 tauri.workspace = true
 log.workspace = true
 thiserror.workspace = true
+rand = "0.8"
+time = { version = "0.3", features = ["serde", "parsing", "formatting"] }
+url = { version = "2", features = ["serde"] }
+serde_repr = "0.1"
 
 [target."cfg(any(target_os = \"macos\", windows, target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
 notify-rust = "4.5"

plugins/notification/android/build.gradle.kts

@@ -5,11 +5,11 @@ plugins {
 
 android {
     namespace = "app.tauri.notification"
-    compileSdk = 32
+    compileSdk = 33
 
     defaultConfig {
         minSdk = 24
-        targetSdk = 32
+        targetSdk = 33
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles("consumer-rules.pro")

plugins/notification/android/src/main/AndroidManifest.xml

@@ -1,3 +1,20 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="app.tauri.notification">
+
+    <application>
+        <receiver android:name="app.tauri.notification.TimedNotificationPublisher" />
+        <receiver android:name="app.tauri.notification.NotificationDismissReceiver" />
+        <receiver
+            android:name="app.tauri.notification.NotificationRestoreReceiver"
+            android:directBootAware="true"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED" />
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+                <action android:name="android.intent.action.QUICKBOOT_POWERON" />
+            </intent-filter>
+        </receiver>
+    </application>
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
 </manifest>

plugins/notification/android/src/main/java/AssetUtils.kt

@@ -0,0 +1,25 @@
+package app.tauri.notification
+
+import android.annotation.SuppressLint
+import android.content.Context
+
+class AssetUtils {
+  companion object {
+    const val RESOURCE_ID_ZERO_VALUE = 0
+
+    @SuppressLint("DiscouragedApi")
+    fun getResourceID(context: Context, resourceName: String?, dir: String?): Int {
+      return context.resources.getIdentifier(resourceName, dir, context.packageName)
+    }
+
+    fun getResourceBaseName(resPath: String?): String? {
+      if (resPath == null) return null
+      if (resPath.contains("/")) {
+        return resPath.substring(resPath.lastIndexOf('/') + 1)
+      }
+      return if (resPath.contains(".")) {
+        resPath.substring(0, resPath.lastIndexOf('.'))
+      } else resPath
+    }
+  }
+}

plugins/notification/android/src/main/java/ChannelManager.kt

@@ -0,0 +1,150 @@
+package app.tauri.notification
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.ContentResolver
+import android.content.Context
+import android.graphics.Color
+import android.media.AudioAttributes
+import android.net.Uri
+import android.os.Build
+import androidx.core.app.NotificationCompat
+import app.tauri.Logger
+import app.tauri.plugin.Invoke
+import app.tauri.plugin.JSArray
+import app.tauri.plugin.JSObject
+
+private const val CHANNEL_ID = "id"
+private const val CHANNEL_NAME = "name"
+private const val CHANNEL_DESCRIPTION = "description"
+private const val CHANNEL_IMPORTANCE = "importance"
+private const val CHANNEL_VISIBILITY = "visibility"
+private const val CHANNEL_SOUND = "sound"
+private const val CHANNEL_VIBRATE = "vibration"
+private const val CHANNEL_USE_LIGHTS = "lights"
+private const val CHANNEL_LIGHT_COLOR = "lightColor"
+
+class ChannelManager(private var context: Context) {
+  private var notificationManager: NotificationManager? = null
+
+  init {
+    notificationManager =
+      context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager?
+  }
+
+  fun createChannel(invoke: Invoke) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+      val channel = JSObject()
+      if (invoke.getString(CHANNEL_ID) != null) {
+        channel.put(CHANNEL_ID, invoke.getString(CHANNEL_ID))
+      } else {
+        invoke.reject("Channel missing identifier")
+        return
+      }
+      if (invoke.getString(CHANNEL_NAME) != null) {
+        channel.put(CHANNEL_NAME, invoke.getString(CHANNEL_NAME))
+      } else {
+        invoke.reject("Channel missing name")
+        return
+      }
+      channel.put(
+        CHANNEL_IMPORTANCE,
+        invoke.getInt(CHANNEL_IMPORTANCE, NotificationManager.IMPORTANCE_DEFAULT)
+      )
+      channel.put(CHANNEL_DESCRIPTION, invoke.getString(CHANNEL_DESCRIPTION, ""))
+      channel.put(
+        CHANNEL_VISIBILITY,
+        invoke.getInt(CHANNEL_VISIBILITY, NotificationCompat.VISIBILITY_PUBLIC)
+      )
+      channel.put(CHANNEL_SOUND, invoke.getString(CHANNEL_SOUND))
+      channel.put(CHANNEL_VIBRATE, invoke.getBoolean(CHANNEL_VIBRATE, false))
+      channel.put(CHANNEL_USE_LIGHTS, invoke.getBoolean(CHANNEL_USE_LIGHTS, false))
+      channel.put(CHANNEL_LIGHT_COLOR, invoke.getString(CHANNEL_LIGHT_COLOR))
+      createChannel(channel)
+      invoke.resolve()
+    } else {
+      invoke.reject("channel not available")
+    }
+  }
+
+  private fun createChannel(channel: JSObject) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+      val notificationChannel = NotificationChannel(
+        channel.getString(CHANNEL_ID),
+        channel.getString(CHANNEL_NAME),
+        channel.getInteger(CHANNEL_IMPORTANCE)!!
+      )
+      notificationChannel.description = channel.getString(CHANNEL_DESCRIPTION)
+      notificationChannel.lockscreenVisibility = channel.getInteger(CHANNEL_VISIBILITY, android.app.Notification.VISIBILITY_PRIVATE)
+      notificationChannel.enableVibration(channel.getBoolean(CHANNEL_VIBRATE, false))
+      notificationChannel.enableLights(channel.getBoolean(CHANNEL_USE_LIGHTS, false))
+      val lightColor = channel.getString(CHANNEL_LIGHT_COLOR)
+      if (lightColor.isNotEmpty()) {
+        try {
+          notificationChannel.lightColor = Color.parseColor(lightColor)
+        } catch (ex: IllegalArgumentException) {
+          Logger.error(
+            Logger.tags("NotificationChannel"),
+            "Invalid color provided for light color.",
+            null
+          )
+        }
+      }
+      var sound = channel.getString(CHANNEL_SOUND)
+      if (sound.isNotEmpty()) {
+        if (sound.contains(".")) {
+          sound = sound.substring(0, sound.lastIndexOf('.'))
+        }
+        val audioAttributes = AudioAttributes.Builder()
+          .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
+          .setUsage(AudioAttributes.USAGE_NOTIFICATION)
+          .build()
+        val soundUri =
+          Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.packageName + "/raw/" + sound)
+        notificationChannel.setSound(soundUri, audioAttributes)
+      }
+      notificationManager?.createNotificationChannel(notificationChannel)
+    }
+  }
+
+  fun deleteChannel(invoke: Invoke) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+      val channelId = invoke.getString("id")
+      notificationManager?.deleteNotificationChannel(channelId)
+      invoke.resolve()
+    } else {
+      invoke.reject("channel not available")
+    }
+  }
+
+  fun listChannels(invoke: Invoke) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+      val notificationChannels: List<NotificationChannel> =
+        notificationManager?.notificationChannels ?: listOf()
+      val channels = JSArray()
+      for (notificationChannel in notificationChannels) {
+        val channel = JSObject()
+        channel.put(CHANNEL_ID, notificationChannel.id)
+        channel.put(CHANNEL_NAME, notificationChannel.name)
+        channel.put(CHANNEL_DESCRIPTION, notificationChannel.description)
+        channel.put(CHANNEL_IMPORTANCE, notificationChannel.importance)
+        channel.put(CHANNEL_VISIBILITY, notificationChannel.lockscreenVisibility)
+        channel.put(CHANNEL_SOUND, notificationChannel.sound)
+        channel.put(CHANNEL_VIBRATE, notificationChannel.shouldVibrate())
+        channel.put(CHANNEL_USE_LIGHTS, notificationChannel.shouldShowLights())
+        channel.put(
+          CHANNEL_LIGHT_COLOR, String.format(
+            "#%06X",
+            0xFFFFFF and notificationChannel.lightColor
+          )
+        )
+        channels.put(channel)
+      }
+      val result = JSObject()
+      result.put("channels", channels)
+      invoke.resolve(result)
+    } else {
+      invoke.reject("channel not available")
+    }
+  }
+}

plugins/notification/android/src/main/java/Notification.kt

@@ -0,0 +1,165 @@
+package app.tauri.notification
+
+import android.content.ContentResolver
+import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import app.tauri.plugin.JSArray
+import app.tauri.plugin.JSObject
+import org.json.JSONException
+import org.json.JSONObject
+
+class Notification {
+  var title: String? = null
+  var body: String? = null
+  var largeBody: String? = null
+  var summary: String? = null
+  var id: Int = 0
+  private var sound: String? = null
+  private var smallIcon: String? = null
+  private var largeIcon: String? = null
+  var iconColor: String? = null
+  var actionTypeId: String? = null
+  var group: String? = null
+  var inboxLines: List<String>? = null
+  var isGroupSummary = false
+  var isOngoing = false
+  var isAutoCancel = false
+  var extra: JSObject? = null
+  var attachments: List<NotificationAttachment>? = null
+  var schedule: NotificationSchedule? = null
+  var channelId: String? = null
+  var source: JSObject? = null
+  var visibility: Int? = null
+  var number: Int? = null
+
+  fun getSound(context: Context, defaultSound: Int): String? {
+    var soundPath: String? = null
+    var resId: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+    val name = AssetUtils.getResourceBaseName(sound)
+    if (name != null) {
+      resId = AssetUtils.getResourceID(context, name, "raw")
+    }
+    if (resId == AssetUtils.RESOURCE_ID_ZERO_VALUE) {
+      resId = defaultSound
+    }
+    if (resId != AssetUtils.RESOURCE_ID_ZERO_VALUE) {
+      soundPath =
+        ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.packageName + "/" + resId
+    }
+    return soundPath
+  }
+
+  fun setSound(sound: String?) {
+    this.sound = sound
+  }
+
+  fun setSmallIcon(smallIcon: String?) {
+    this.smallIcon = AssetUtils.getResourceBaseName(smallIcon)
+  }
+
+  fun setLargeIcon(largeIcon: String?) {
+    this.largeIcon = AssetUtils.getResourceBaseName(largeIcon)
+  }
+
+  fun getIconColor(globalColor: String): String {
+    // use the one defined local before trying for a globally defined color
+    return iconColor ?: globalColor
+  }
+
+  fun getSmallIcon(context: Context, defaultIcon: Int): Int {
+    var resId: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+    if (smallIcon != null) {
+      resId = AssetUtils.getResourceID(context, smallIcon, "drawable")
+    }
+    if (resId == AssetUtils.RESOURCE_ID_ZERO_VALUE) {
+      resId = defaultIcon
+    }
+    return resId
+  }
+
+  fun getLargeIcon(context: Context): Bitmap? {
+    if (largeIcon != null) {
+      val resId: Int = AssetUtils.getResourceID(context, largeIcon, "drawable")
+      return BitmapFactory.decodeResource(context.resources, resId)
+    }
+    return null
+  }
+
+  val isScheduled = schedule != null
+
+  companion object {
+    fun fromJson(jsonNotification: JSONObject): Notification {
+      val notification: JSObject = try {
+        val identifier = jsonNotification.getLong("id")
+        if (identifier > Int.MAX_VALUE || identifier < Int.MIN_VALUE) {
+          throw Exception("The notification identifier should be a 32-bit integer")
+        }
+        JSObject.fromJSONObject(jsonNotification)
+      } catch (e: JSONException) {
+        throw Exception("Invalid notification JSON object", e)
+      }
+      return fromJSObject(notification)
+    }
+
+    fun fromJSObject(jsonObject: JSObject): Notification {
+      val notification = Notification()
+      notification.source = jsonObject
+      notification.id = jsonObject.getInteger("id") ?: throw Exception("Missing notification identifier")
+      notification.body = jsonObject.getString("body", null)
+      notification.largeBody = jsonObject.getString("largeBody", null)
+      notification.summary = jsonObject.getString("summary", null)
+      notification.actionTypeId = jsonObject.getString("actionTypeId", null)
+      notification.group = jsonObject.getString("group", null)
+      notification.setSound(jsonObject.getString("sound", null))
+      notification.title = jsonObject.getString("title", null)
+      notification.setSmallIcon(jsonObject.getString("icon", null))
+      notification.setLargeIcon(jsonObject.getString("largeIcon", null))
+      notification.iconColor = jsonObject.getString("iconColor", null)
+      notification.attachments = NotificationAttachment.getAttachments(jsonObject)
+      notification.isGroupSummary = jsonObject.getBoolean("groupSummary", false)
+      notification.channelId = jsonObject.getString("channelId", null)
+      val schedule = jsonObject.getJSObject("schedule")
+      if (schedule != null) {
+        notification.schedule = NotificationSchedule(schedule)
+      }
+      notification.extra = jsonObject.getJSObject("extra")
+      notification.isOngoing = jsonObject.getBoolean("ongoing", false)
+      notification.isAutoCancel = jsonObject.getBoolean("autoCancel", true)
+      notification.visibility = jsonObject.getInteger("visibility")
+      notification.number = jsonObject.getInteger("number")
+      try {
+        val inboxLines = jsonObject.getJSONArray("inboxLines")
+        val inboxStringList: MutableList<String> = ArrayList()
+        for (i in 0 until inboxLines.length()) {
+          inboxStringList.add(inboxLines.getString(i))
+        }
+        notification.inboxLines = inboxStringList
+      } catch (_: Exception) {
+      }
+      return notification
+    }
+
+    fun buildNotificationPendingList(notifications: List<Notification>): JSObject {
+      val result = JSObject()
+      val jsArray = JSArray()
+      for (notification in notifications) {
+        val jsNotification = JSObject()
+        jsNotification.put("id", notification.id)
+        jsNotification.put("title", notification.title)
+        jsNotification.put("body", notification.body)
+        val schedule = notification.schedule
+        if (schedule != null) {
+          val jsSchedule = JSObject()
+          jsSchedule.put("kind", schedule.scheduleObj.getString("kind", null))
+          jsSchedule.put("data", schedule.scheduleObj.getJSObject("data"))
+          jsNotification.put("schedule", jsSchedule)
+        }
+        jsNotification.put("extra", notification.extra)
+        jsArray.put(jsNotification)
+      }
+      result.put("notifications", jsArray)
+      return result
+    }
+  }
+}

plugins/notification/android/src/main/java/NotificationAction.kt

@@ -0,0 +1,47 @@
+package app.tauri.notification
+
+import app.tauri.Logger
+import app.tauri.plugin.JSArray
+import app.tauri.plugin.JSObject
+import org.json.JSONObject
+
+class NotificationAction() {
+  var id: String? = null
+  var title: String? = null
+  var input = false
+
+  constructor(id: String?, title: String?, input: Boolean): this() {
+    this.id = id
+    this.title = title
+    this.input = input
+  }
+
+  companion object {
+    fun buildTypes(types: JSArray): Map<String, List<NotificationAction>> {
+      val actionTypeMap: MutableMap<String, List<NotificationAction>> = HashMap()
+      try {
+        val objects: List<JSONObject> = types.toList()
+        for (obj in objects) {
+          val jsObject = JSObject.fromJSONObject(
+            obj
+          )
+          val actionGroupId = jsObject.getString("id")
+          val actions = jsObject.getJSONArray("actions")
+          val typesArray = mutableListOf<NotificationAction>()
+          for (i in 0 until actions.length()) {
+            val notificationAction = NotificationAction()
+            val action = JSObject.fromJSONObject(actions.getJSONObject(i))
+            notificationAction.id = action.getString("id")
+            notificationAction.title = action.getString("title")
+            notificationAction.input = action.getBoolean("input")
+            typesArray.add(notificationAction)
+          }
+          actionTypeMap[actionGroupId] = typesArray.toList()
+        }
+      } catch (e: Exception) {
+        Logger.error(Logger.tags("Notification"), "Error when building action types", e)
+      }
+      return actionTypeMap
+    }
+  }
+}

plugins/notification/android/src/main/java/NotificationAttachment.kt

@@ -0,0 +1,48 @@
+package app.tauri.notification
+
+import app.tauri.plugin.JSObject
+import org.json.JSONArray
+import org.json.JSONException
+import org.json.JSONObject
+
+class NotificationAttachment {
+  var id: String? = null
+  var url: String? = null
+  var options: JSONObject? = null
+
+  companion object {
+    fun getAttachments(notification: JSObject): List<NotificationAttachment> {
+      val attachmentsList: MutableList<NotificationAttachment> = ArrayList()
+      var attachments: JSONArray? = null
+      try {
+        attachments = notification.getJSONArray("attachments")
+      } catch (_: Exception) {
+      }
+      if (attachments != null) {
+        for (i in 0 until attachments.length()) {
+          val newAttachment = NotificationAttachment()
+          var jsonObject: JSONObject? = null
+          try {
+            jsonObject = attachments.getJSONObject(i)
+          } catch (e: JSONException) {
+          }
+          if (jsonObject != null) {
+            var jsObject: JSObject? = null
+            try {
+              jsObject = JSObject.fromJSONObject(jsonObject)
+            } catch (_: JSONException) {
+            }
+            newAttachment.id = jsObject!!.getString("id")
+            newAttachment.url = jsObject.getString("url")
+            try {
+              newAttachment.options = jsObject.getJSONObject("options")
+            } catch (_: JSONException) {
+            }
+            attachmentsList.add(newAttachment)
+          }
+        }
+      }
+      return attachmentsList
+    }
+  }
+}

plugins/notification/android/src/main/java/NotificationPlugin.kt

@@ -1,31 +1,263 @@
 package app.tauri.notification
 
+import android.Manifest
+import android.annotation.SuppressLint
 import android.app.Activity
+import android.app.NotificationManager
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.webkit.WebView
+import app.tauri.PermissionState
 import app.tauri.annotation.Command
+import app.tauri.annotation.Permission
+import app.tauri.annotation.PermissionCallback
 import app.tauri.annotation.TauriPlugin
+import app.tauri.plugin.Invoke
+import app.tauri.plugin.JSArray
 import app.tauri.plugin.JSObject
 import app.tauri.plugin.Plugin
-import app.tauri.plugin.Invoke
+import org.json.JSONException
+import org.json.JSONObject
+
+const val LOCAL_NOTIFICATIONS = "permissionState"
 
-@TauriPlugin
+@TauriPlugin(
+  permissions = [
+    Permission(strings = [Manifest.permission.POST_NOTIFICATIONS], alias = "permissionState")
+  ]
+)
 class NotificationPlugin(private val activity: Activity): Plugin(activity) {
-    @Command
-    fun requestPermission(invoke: Invoke) {
-        val ret = JSObject()
-        ret.put("permissionState", "granted")
-        invoke.resolve(ret)
+  private var webView: WebView? = null
+  private lateinit var manager: TauriNotificationManager
+  private lateinit var notificationManager: NotificationManager
+  private lateinit var notificationStorage: NotificationStorage
+  private var channelManager = ChannelManager(activity)
+
+  companion object {
+    var instance: NotificationPlugin? = null
+
+    fun triggerNotification(notification: JSObject) {
+      instance?.trigger("notification", notification)
+    }
+  }
+
+  override fun load(webView: WebView) {
+    instance = this
+
+    super.load(webView)
+    this.webView = webView
+    notificationStorage = NotificationStorage(activity)
+    
+    val manager = TauriNotificationManager(
+      notificationStorage,
+      activity,
+      activity,
+      getConfig()
+    )
+    manager.createNotificationChannel()
+    
+    this.manager = manager
+    
+    notificationManager = activity.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+  }
+
+  override fun onNewIntent(intent: Intent) {
+    super.onNewIntent(intent)
+    if (Intent.ACTION_MAIN != intent.action) {
+      return
+    }
+    val dataJson = manager.handleNotificationActionPerformed(intent, notificationStorage)
+    if (dataJson != null) {
+      trigger("actionPerformed", dataJson)
+    }
+  }
+
+  @Command
+  fun show(invoke: Invoke) {
+    val notification = Notification.fromJSObject(invoke.data)
+    val id = manager.schedule(notification)
+
+    val returnVal = JSObject().put("id", id)
+    invoke.resolve(returnVal)
+  }
+
+  @Command
+  fun batch(invoke: Invoke) {
+    val notificationArray = invoke.getArray("notifications")
+    if (notificationArray == null) {
+      invoke.reject("Missing `notifications` argument")
+      return
+    }
+
+    val notifications: MutableList<Notification> =
+      ArrayList(notificationArray.length())
+    val notificationsInput: List<JSONObject> = try {
+      notificationArray.toList()
+    } catch (e: JSONException) {
+      invoke.reject("Provided notification format is invalid")
+      return
+    }
+
+    for (jsonNotification in notificationsInput) {
+      val notification = Notification.fromJson(jsonNotification)
+      notifications.add(notification)
     }
 
-    @Command
-    fun permissionState(invoke: Invoke) {
-        val ret = JSObject()
-        ret.put("permissionState", "granted")
-        invoke.resolve(ret)
+    val ids = manager.schedule(notifications)
+    notificationStorage.appendNotifications(notifications)
+
+    val result = JSObject()
+    result.put("notifications", ids)
+    invoke.resolve(result)
+  }
+
+  @Command
+  fun cancel(invoke: Invoke) {
+    val notifications: List<Int> = invoke.getArray("notifications", JSArray()).toList()
+    if (notifications.isEmpty()) {
+      invoke.reject("Must provide notifications array as notifications option")
+      return
+    }
+
+    manager.cancel(notifications)
+    invoke.resolve()
+  }
+
+  @Command
+  fun removeActive(invoke: Invoke) {
+    val notifications = invoke.getArray("notifications")
+    if (notifications == null) {
+      notificationManager.cancelAll()
+      invoke.resolve()
+    } else {
+      try {
+        for (o in notifications.toList<Any>()) {
+          if (o is JSONObject) {
+            val notification = JSObject.fromJSONObject((o))
+            val tag = notification.getString("tag", null)
+            val id = notification.getInteger("id", 0)
+            if (tag == null) {
+              notificationManager.cancel(id)
+            } else {
+              notificationManager.cancel(tag, id)
+            }
+          } else {
+            invoke.reject("Unexpected notification type")
+            return
+          }
+        }
+      } catch (e: JSONException) {
+        invoke.reject(e.message)
+      }
+      invoke.resolve()
+    }
+  }
+
+  @Command
+  fun getPending(invoke: Invoke) {
+    val notifications= notificationStorage.getSavedNotifications()
+    val result = Notification.buildNotificationPendingList(notifications)
+    invoke.resolve(result)
+  }
+
+  @Command
+  fun registerActionTypes(invoke: Invoke) {
+    val types = invoke.getArray("types", JSArray())
+    val typesArray = NotificationAction.buildTypes(types)
+    notificationStorage.writeActionGroup(typesArray)
+    invoke.resolve()
+  }
+
+  @SuppressLint("ObsoleteSdkInt")
+  @Command
+  fun getActive(invoke: Invoke) {
+    val notifications = JSArray()
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+      val activeNotifications = notificationManager.activeNotifications
+      for (activeNotification in activeNotifications) {
+        val jsNotification = JSObject()
+        jsNotification.put("id", activeNotification.id)
+        jsNotification.put("tag", activeNotification.tag)
+        val notification = activeNotification.notification
+        if (notification != null) {
+          jsNotification.put("title", notification.extras.getCharSequence(android.app.Notification.EXTRA_TITLE))
+          jsNotification.put("body", notification.extras.getCharSequence(android.app.Notification.EXTRA_TEXT))
+          jsNotification.put("group", notification.group)
+          jsNotification.put(
+            "groupSummary",
+            0 != notification.flags and android.app.Notification.FLAG_GROUP_SUMMARY
+          )
+          val extras = JSObject()
+          for (key in notification.extras.keySet()) {
+            extras.put(key!!, notification.extras.getString(key))
+          }
+          jsNotification.put("data", extras)
+        }
+        notifications.put(jsNotification)
+      }
     }
+    val result = JSObject()
+    result.put("notifications", notifications)
+    invoke.resolve(result)
+  }
+
+  @Command
+  fun createChannel(invoke: Invoke) {
+    channelManager.createChannel(invoke)
+  }
+
+  @Command
+  fun deleteChannel(invoke: Invoke) {
+    channelManager.deleteChannel(invoke)
+  }
+
+  @Command
+  fun listChannels(invoke: Invoke) {
+    channelManager.listChannels(invoke)
+  }
+
+  @Command
+  override fun checkPermissions(invoke: Invoke) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+      val permissionsResultJSON = JSObject()
+      permissionsResultJSON.put("permissionState", getPermissionState())
+      invoke.resolve(permissionsResultJSON)
+    } else {
+      super.checkPermissions(invoke)
+    }
+  }
+
+  @Command
+  override fun requestPermissions(invoke: Invoke) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+      permissionState(invoke)
+    } else {
+      if (getPermissionState(LOCAL_NOTIFICATIONS) !== PermissionState.GRANTED) {
+        requestPermissionForAlias(LOCAL_NOTIFICATIONS, invoke, "permissionsCallback")
+      }
+    }
+  }
+
+  @Command
+  fun permissionState(invoke: Invoke) {
+    val permissionsResultJSON = JSObject()
+    permissionsResultJSON.put("permissionState", getPermissionState())
+    invoke.resolve(permissionsResultJSON)
+  }
+
+  @PermissionCallback
+  private fun permissionsCallback(invoke: Invoke) {
+    val permissionsResultJSON = JSObject()
+    permissionsResultJSON.put("display", getPermissionState())
+    invoke.resolve(permissionsResultJSON)
+  }
 
-    @Command
-    fun notify(invoke: Invoke) {
-        // TODO
-        invoke.resolve()
+  private fun getPermissionState(): String {
+    return if (manager.areNotificationsEnabled()) {
+      "granted"
+    } else {
+      "denied"
     }
+  }
 }

plugins/notification/android/src/main/java/NotificationSchedule.kt

@@ -0,0 +1,305 @@
+package app.tauri.notification
+
+import android.annotation.SuppressLint
+import android.text.format.DateUtils
+import app.tauri.plugin.JSObject
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.TimeZone
+
+const val JS_DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
+
+enum class NotificationInterval {
+  Year, Month, TwoWeeks, Week, Day, Hour, Minute, Second
+}
+
+fun getIntervalTime(interval: NotificationInterval, count: Int): Long {
+  return when (interval) {
+    // This case is just approximation as not all years have the same number of days
+    NotificationInterval.Year -> count * DateUtils.WEEK_IN_MILLIS * 52
+    // This case is just approximation as months have different number of days
+    NotificationInterval.Month -> count * 30 * DateUtils.DAY_IN_MILLIS
+    NotificationInterval.TwoWeeks -> count * 2 * DateUtils.WEEK_IN_MILLIS
+    NotificationInterval.Week -> count * DateUtils.WEEK_IN_MILLIS
+    NotificationInterval.Day -> count * DateUtils.DAY_IN_MILLIS
+    NotificationInterval.Hour -> count * DateUtils.HOUR_IN_MILLIS
+    NotificationInterval.Minute -> count * DateUtils.MINUTE_IN_MILLIS
+    NotificationInterval.Second -> count * DateUtils.SECOND_IN_MILLIS
+  }
+}
+
+sealed class ScheduleKind {
+  // At specific moment of time (with repeating option)
+  class At(var date: Date, val repeating: Boolean): ScheduleKind()
+  class Interval(val interval: DateMatch): ScheduleKind()
+  class Every(val interval: NotificationInterval, val count: Int): ScheduleKind()
+}
+
+@SuppressLint("SimpleDateFormat")
+class NotificationSchedule(val scheduleObj: JSObject) {
+  val kind: ScheduleKind
+  // Schedule this notification to fire even if app is idled (Doze)
+  var whileIdle: Boolean = false
+
+  init {
+    val payload = scheduleObj.getJSObject("data", JSObject())
+
+    when (val scheduleKind = scheduleObj.getString("kind", "")) {
+      "At" -> {
+        val dateString = payload.getString("date")
+        if (dateString.isNotEmpty()) {
+          val sdf = SimpleDateFormat(JS_DATE_FORMAT)
+          sdf.timeZone = TimeZone.getTimeZone("UTC")
+          val at = sdf.parse(dateString)
+          if (at == null) {
+            throw Exception("could not parse `at` date")
+          } else {
+            kind = ScheduleKind.At(at, payload.getBoolean("repeating"))
+          }
+        } else {
+          throw Exception("`at` date cannot be empty")
+        }
+      }
+      "Interval" -> {
+        val dateMatch = onFromJson(payload)
+        kind = ScheduleKind.Interval(dateMatch)
+      }
+      "Every" -> {
+        val interval = NotificationInterval.valueOf(payload.getString("interval"))
+        kind = ScheduleKind.Every(interval, payload.getInteger("count", 1))
+      }
+      else -> {
+        throw Exception("Unknown schedule kind $scheduleKind")
+      }
+    }
+    whileIdle = scheduleObj.getBoolean("allowWhileIdle", false)
+  }
+
+  private fun onFromJson(onJson: JSObject): DateMatch {
+    val match = DateMatch()
+    match.year = onJson.getInteger("year")
+    match.month = onJson.getInteger("month")
+    match.day = onJson.getInteger("day")
+    match.weekday = onJson.getInteger("weekday")
+    match.hour = onJson.getInteger("hour")
+    match.minute = onJson.getInteger("minute")
+    match.second = onJson.getInteger("second")
+    return match
+  }
+
+  fun isRemovable(): Boolean {
+    return when (kind) {
+      is ScheduleKind.At -> !kind.repeating
+      else -> false
+    }
+  }
+}
+
+class DateMatch {
+  var year: Int? = null
+  var month: Int? = null
+  var day: Int? = null
+  var weekday: Int? = null
+  var hour: Int? = null
+  var minute: Int? = null
+  var second: Int? = null
+
+  // Unit used to save the last used unit for a trigger.
+  // One of the Calendar constants values
+  var unit: Int? = -1
+
+  /**
+   * Gets a calendar instance pointing to the specified date.
+   *
+   * @param date The date to point.
+   */
+  private fun buildCalendar(date: Date): Calendar {
+    val cal: Calendar = Calendar.getInstance()
+    cal.time = date
+    cal.set(Calendar.MILLISECOND, 0)
+    return cal
+  }
+
+  /**
+   * Calculates next trigger date for
+   *
+   * @param date base date used to calculate trigger
+   * @return next trigger timestamp
+   */
+  fun nextTrigger(date: Date): Long {
+    val current: Calendar = buildCalendar(date)
+    val next: Calendar = buildNextTriggerTime(date)
+    return postponeTriggerIfNeeded(current, next)
+  }
+
+  /**
+   * Postpone trigger if first schedule matches the past
+   */
+  private fun postponeTriggerIfNeeded(current: Calendar, next: Calendar): Long {
+    if (next.timeInMillis <= current.timeInMillis && unit != -1) {
+      var incrementUnit = -1
+      if (unit == Calendar.YEAR || unit == Calendar.MONTH) {
+        incrementUnit = Calendar.YEAR
+      } else if (unit == Calendar.DAY_OF_MONTH) {
+        incrementUnit = Calendar.MONTH
+      } else if (unit == Calendar.DAY_OF_WEEK) {
+        incrementUnit = Calendar.WEEK_OF_MONTH
+      } else if (unit == Calendar.HOUR_OF_DAY) {
+        incrementUnit = Calendar.DAY_OF_MONTH
+      } else if (unit == Calendar.MINUTE) {
+        incrementUnit = Calendar.HOUR_OF_DAY
+      } else if (unit == Calendar.SECOND) {
+        incrementUnit = Calendar.MINUTE
+      }
+      if (incrementUnit != -1) {
+        next.set(incrementUnit, next.get(incrementUnit) + 1)
+      }
+    }
+    return next.timeInMillis
+  }
+
+  private fun buildNextTriggerTime(date: Date): Calendar {
+    val next: Calendar = buildCalendar(date)
+    if (year != null) {
+      next.set(Calendar.YEAR, year ?: 0)
+      if (unit == -1) unit = Calendar.YEAR
+    }
+    if (month != null) {
+      next.set(Calendar.MONTH, month ?: 0)
+      if (unit == -1) unit = Calendar.MONTH
+    }
+    if (day != null) {
+      next.set(Calendar.DAY_OF_MONTH, day ?: 0)
+      if (unit == -1) unit = Calendar.DAY_OF_MONTH
+    }
+    if (weekday != null) {
+      next.set(Calendar.DAY_OF_WEEK, weekday ?: 0)
+      if (unit == -1) unit = Calendar.DAY_OF_WEEK
+    }
+    if (hour != null) {
+      next.set(Calendar.HOUR_OF_DAY, hour ?: 0)
+      if (unit == -1) unit = Calendar.HOUR_OF_DAY
+    }
+    if (minute != null) {
+      next.set(Calendar.MINUTE, minute ?: 0)
+      if (unit == -1) unit = Calendar.MINUTE
+    }
+    if (second != null) {
+      next.set(Calendar.SECOND, second ?: 0)
+      if (unit == -1) unit = Calendar.SECOND
+    }
+    return next
+  }
+
+  override fun toString(): String {
+    return "DateMatch{" +
+            "year=" +
+            year +
+            ", month=" +
+            month +
+            ", day=" +
+            day +
+            ", weekday=" +
+            weekday +
+            ", hour=" +
+            hour +
+            ", minute=" +
+            minute +
+            ", second=" +
+            second +
+            '}'
+  }
+
+  override fun equals(other: Any?): Boolean {
+    if (this === other) return true
+    if (other == null || javaClass != other.javaClass) return false
+    val dateMatch = other as DateMatch
+    if (if (year != null) year != dateMatch.year else dateMatch.year != null) return false
+    if (if (month != null) month != dateMatch.month else dateMatch.month != null) return false
+    if (if (day != null) day != dateMatch.day else dateMatch.day != null) return false
+    if (if (weekday != null) weekday != dateMatch.weekday else dateMatch.weekday != null) return false
+    if (if (hour != null) hour != dateMatch.hour else dateMatch.hour != null) return false
+    if (if (minute != null) minute != dateMatch.minute else dateMatch.minute != null) return false
+    return if (second != null) second == dateMatch.second else dateMatch.second == null
+  }
+
+  override fun hashCode(): Int {
+    var result = if (year != null) year.hashCode() else 0
+    result = 31 * result + if (month != null) month.hashCode() else 0
+    result = 31 * result + if (day != null) day.hashCode() else 0
+    result = 31 * result + if (weekday != null) weekday.hashCode() else 0
+    result = 31 * result + if (hour != null) hour.hashCode() else 0
+    result = 31 * result + if (minute != null) minute.hashCode() else 0
+    result += 31 + if (second != null) second.hashCode() else 0
+    return result
+  }
+
+  /**
+   * Transform DateMatch object to CronString
+   *
+   * @return
+   */
+  fun toMatchString(): String {
+    val matchString = year.toString() +
+            separator +
+            month +
+            separator +
+            day +
+            separator +
+            weekday +
+            separator +
+            hour +
+            separator +
+            minute +
+            separator +
+            second +
+            separator +
+            unit
+    return matchString.replace("null", "*")
+  }
+
+  companion object {
+    private const val separator = " "
+
+    /**
+     * Create DateMatch object from stored string
+     *
+     * @param matchString
+     * @return
+     */
+    fun fromMatchString(matchString: String): DateMatch {
+      val date = DateMatch()
+      val split = matchString.split(separator.toRegex()).dropLastWhile { it.isEmpty() }
+        .toTypedArray()
+      if (split.size == 7) {
+        date.year = getValueFromCronElement(split[0])
+        date.month = getValueFromCronElement(split[1])
+        date.day = getValueFromCronElement(split[2])
+        date.weekday = getValueFromCronElement(split[3])
+        date.hour = getValueFromCronElement(split[4])
+        date.minute = getValueFromCronElement(split[5])
+        date.unit = getValueFromCronElement(split[6])
+      }
+      if (split.size == 8) {
+        date.year = getValueFromCronElement(split[0])
+        date.month = getValueFromCronElement(split[1])
+        date.day = getValueFromCronElement(split[2])
+        date.weekday = getValueFromCronElement(split[3])
+        date.hour = getValueFromCronElement(split[4])
+        date.minute = getValueFromCronElement(split[5])
+        date.second = getValueFromCronElement(split[6])
+        date.unit = getValueFromCronElement(split[7])
+      }
+      return date
+    }
+
+    private fun getValueFromCronElement(token: String): Int? {
+      return try {
+        token.toInt()
+      } catch (e: NumberFormatException) {
+        null
+      }
+    }
+  }
+}

plugins/notification/android/src/main/java/NotificationStorage.kt

@@ -0,0 +1,131 @@
+package app.tauri.notification
+
+import android.content.Context
+import android.content.SharedPreferences
+import app.tauri.plugin.JSObject
+import org.json.JSONException
+import java.text.ParseException
+
+// Key for private preferences
+private const val NOTIFICATION_STORE_ID = "NOTIFICATION_STORE"
+// Key used to save action types
+private const val ACTION_TYPES_ID = "ACTION_TYPE_STORE"
+
+class NotificationStorage(private val context: Context) {
+  fun appendNotifications(localNotifications: List<Notification>) {
+    val storage = getStorage(NOTIFICATION_STORE_ID)
+    val editor = storage.edit()
+    for (request in localNotifications) {
+      if (request.isScheduled) {
+        val key: String = request.id.toString()
+        editor.putString(key, request.source.toString())
+      }
+    }
+    editor.apply()
+  }
+
+  fun getSavedNotificationIds(): List<String> {
+    val storage = getStorage(NOTIFICATION_STORE_ID)
+    val all = storage.all
+    return if (all != null) {
+      ArrayList(all.keys)
+    } else ArrayList()
+  }
+
+  fun getSavedNotifications(): List<Notification> {
+    val storage = getStorage(NOTIFICATION_STORE_ID)
+    val all = storage.all
+    if (all != null) {
+      val notifications = ArrayList<Notification>()
+      for (key in all.keys) {
+        val notificationString = all[key] as String?
+        val jsNotification = getNotificationFromJSONString(notificationString)
+        if (jsNotification != null) {
+          try {
+            val notification =
+              Notification.fromJSObject(jsNotification)
+            notifications.add(notification)
+          } catch (_: ParseException) {
+          }
+        }
+      }
+      return notifications
+    }
+    return ArrayList()
+  }
+
+  private fun getNotificationFromJSONString(notificationString: String?): JSObject? {
+    if (notificationString == null) {
+      return null
+    }
+    val jsNotification = try {
+      JSObject(notificationString)
+    } catch (ex: JSONException) {
+      return null
+    }
+    return jsNotification
+  }
+
+  fun getSavedNotificationAsJSObject(key: String?): JSObject? {
+    val storage = getStorage(NOTIFICATION_STORE_ID)
+    val notificationString = try {
+      storage.getString(key, null)
+    } catch (ex: ClassCastException) {
+      return null
+    } ?: return null
+    
+    val jsNotification = try {
+      JSObject(notificationString)
+    } catch (ex: JSONException) {
+      return null
+    }
+    return jsNotification
+  }
+
+  fun getSavedNotification(key: String?): Notification? {
+    val jsNotification = getSavedNotificationAsJSObject(key) ?: return null
+    val notification = try {
+      Notification.fromJSObject(jsNotification)
+    } catch (ex: ParseException) {
+      return null
+    }
+    return notification
+  }
+
+  fun deleteNotification(id: String?) {
+    val editor = getStorage(NOTIFICATION_STORE_ID).edit()
+    editor.remove(id)
+    editor.apply()
+  }
+
+  private fun getStorage(key: String): SharedPreferences {
+    return context.getSharedPreferences(key, Context.MODE_PRIVATE)
+  }
+
+  fun writeActionGroup(typesMap: Map<String, List<NotificationAction>>) {
+    for ((id, notificationActions) in typesMap) {
+      val editor = getStorage(ACTION_TYPES_ID + id).edit()
+      editor.clear()
+      editor.putInt("count", notificationActions.size)
+      for (i in notificationActions.indices) {
+        editor.putString("id$i", notificationActions[i].id)
+        editor.putString("title$i", notificationActions[i].title)
+        editor.putBoolean("input$i", notificationActions[i].input)
+      }
+      editor.apply()
+    }
+  }
+
+  fun getActionGroup(forId: String): Array<NotificationAction?> {
+    val storage = getStorage(ACTION_TYPES_ID + forId)
+    val count = storage.getInt("count", 0)
+    val actions: Array<NotificationAction?> = arrayOfNulls(count)
+    for (i in 0 until count) {
+      val id = storage.getString("id$i", "")
+      val title = storage.getString("title$i", "")
+      val input = storage.getBoolean("input$i", false)
+      actions[i] = NotificationAction(id, title, input)
+    }
+    return actions
+  }
+}

plugins/notification/android/src/main/java/TauriNotificationManager.kt

@@ -0,0 +1,569 @@
+package app.tauri.notification
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.app.AlarmManager
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.ContentResolver
+import android.content.Context
+import android.content.Intent
+import android.graphics.Color
+import android.media.AudioAttributes
+import android.net.Uri
+import android.os.Build
+import android.os.Build.VERSION.SDK_INT
+import android.os.UserManager
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.app.RemoteInput
+import app.tauri.Logger
+import app.tauri.plugin.JSObject
+import app.tauri.plugin.PluginManager
+import org.json.JSONException
+import org.json.JSONObject
+import java.text.SimpleDateFormat
+import java.util.Date
+
+// Action constants
+const val NOTIFICATION_INTENT_KEY = "NotificationId"
+const val NOTIFICATION_OBJ_INTENT_KEY = "LocalNotficationObject"
+const val ACTION_INTENT_KEY = "NotificationUserAction"
+const val NOTIFICATION_IS_REMOVABLE_KEY = "NotificationRepeating"
+const val REMOTE_INPUT_KEY = "NotificationRemoteInput"
+const val DEFAULT_NOTIFICATION_CHANNEL_ID = "default"
+const val DEFAULT_PRESS_ACTION = "tap"
+
+class TauriNotificationManager(
+  private val storage: NotificationStorage,
+  private val activity: Activity?,
+  private val context: Context,
+  private val config: JSObject
+) {
+  private var defaultSoundID: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+  private var defaultSmallIconID: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+
+  fun handleNotificationActionPerformed(
+    data: Intent,
+    notificationStorage: NotificationStorage
+  ): JSObject? {
+    Logger.debug(Logger.tags("Notification"), "Notification received: " + data.dataString)
+    val notificationId =
+      data.getIntExtra(NOTIFICATION_INTENT_KEY, Int.MIN_VALUE)
+    if (notificationId == Int.MIN_VALUE) {
+      Logger.debug(Logger.tags("Notification"), "Activity started without notification attached")
+      return null
+    }
+    val isRemovable =
+      data.getBooleanExtra(NOTIFICATION_IS_REMOVABLE_KEY, true)
+    if (isRemovable) {
+      notificationStorage.deleteNotification(notificationId.toString())
+    }
+    val dataJson = JSObject()
+    val results = RemoteInput.getResultsFromIntent(data)
+    val input = results?.getCharSequence(REMOTE_INPUT_KEY)
+    dataJson.put("inputValue", input?.toString())
+    val menuAction = data.getStringExtra(ACTION_INTENT_KEY)
+    dismissVisibleNotification(notificationId)
+    dataJson.put("actionId", menuAction)
+    var request: JSONObject? = null
+    try {
+      val notificationJsonString =
+        data.getStringExtra(NOTIFICATION_OBJ_INTENT_KEY)
+      if (notificationJsonString != null) {
+        request = JSObject(notificationJsonString)
+      }
+    } catch (_: JSONException) {
+    }
+    dataJson.put("notification", request)
+    return dataJson
+  }
+
+  /**
+   * Create notification channel
+   */
+  fun createNotificationChannel() {
+    // Create the NotificationChannel, but only on API 26+ because
+    // the NotificationChannel class is new and not in the support library
+    if (SDK_INT >= Build.VERSION_CODES.O) {
+      val name: CharSequence = "Default"
+      val description = "Default"
+      val importance = NotificationManager.IMPORTANCE_DEFAULT
+      val channel = NotificationChannel(DEFAULT_NOTIFICATION_CHANNEL_ID, name, importance)
+      channel.description = description
+      val audioAttributes = AudioAttributes.Builder()
+        .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
+        .setUsage(AudioAttributes.USAGE_ALARM)
+        .build()
+      val soundUri = getDefaultSoundUrl(context)
+      if (soundUri != null) {
+        channel.setSound(soundUri, audioAttributes)
+      }
+      // Register the channel with the system; you can't change the importance
+      // or other notification behaviors after this
+      val notificationManager = context.getSystemService(
+        NotificationManager::class.java
+      )
+      notificationManager.createNotificationChannel(channel)
+    }
+  }
+
+  private fun trigger(notificationManager: NotificationManagerCompat, notification: Notification): Int {
+    dismissVisibleNotification(notification.id)
+    cancelTimerForNotification(notification.id)
+    buildNotification(notificationManager, notification)
+
+    return notification.id
+  }
+
+  fun schedule(notification: Notification): Int {
+    val notificationManager = NotificationManagerCompat.from(context)
+    return trigger(notificationManager, notification)
+  }
+
+  fun schedule(notifications: List<Notification>): List<Int> {
+    val ids = mutableListOf<Int>()
+    val notificationManager = NotificationManagerCompat.from(context)
+
+    for (notification in notifications) {
+      val id = trigger(notificationManager, notification)
+      ids.add(id)
+    }
+
+    return ids
+  }
+
+  // TODO Progressbar support
+  // TODO System categories (DO_NOT_DISTURB etc.)
+  // TODO use NotificationCompat.MessagingStyle for latest API
+  // TODO expandable notification NotificationCompat.MessagingStyle
+  // TODO media style notification support NotificationCompat.MediaStyle
+  @SuppressLint("MissingPermission")
+  private fun buildNotification(
+    notificationManager: NotificationManagerCompat,
+    notification: Notification,
+  ) {
+    val channelId = notification.channelId ?: DEFAULT_NOTIFICATION_CHANNEL_ID
+    val mBuilder = NotificationCompat.Builder(
+      context, channelId
+    )
+      .setContentTitle(notification.title)
+      .setContentText(notification.body)
+      .setAutoCancel(notification.isAutoCancel)
+      .setOngoing(notification.isOngoing)
+      .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+      .setGroupSummary(notification.isGroupSummary)
+    if (notification.largeBody != null) {
+      // support multiline text
+      mBuilder.setStyle(
+        NotificationCompat.BigTextStyle()
+          .bigText(notification.largeBody)
+          .setSummaryText(notification.summary)
+      )
+    } else if (notification.inboxLines != null) {
+      val inboxStyle = NotificationCompat.InboxStyle()
+      for (line in notification.inboxLines ?: listOf()) {
+        inboxStyle.addLine(line)
+      }
+      inboxStyle.setBigContentTitle(notification.title)
+      inboxStyle.setSummaryText(notification.summary)
+      mBuilder.setStyle(inboxStyle)
+    }
+    val sound = notification.getSound(context, getDefaultSound(context))
+    if (sound != null) {
+      val soundUri = Uri.parse(sound)
+      // Grant permission to use sound
+      context.grantUriPermission(
+        "com.android.systemui",
+        soundUri,
+        Intent.FLAG_GRANT_READ_URI_PERMISSION
+      )
+      mBuilder.setSound(soundUri)
+      mBuilder.setDefaults(android.app.Notification.DEFAULT_VIBRATE or android.app.Notification.DEFAULT_LIGHTS)
+    } else {
+      mBuilder.setDefaults(android.app.Notification.DEFAULT_ALL)
+    }
+    val group = notification.group
+    if (group != null) {
+      mBuilder.setGroup(group)
+      if (notification.isGroupSummary) {
+        mBuilder.setSubText(notification.summary)
+      }
+    }
+    mBuilder.setVisibility(notification.visibility ?: NotificationCompat.VISIBILITY_PRIVATE)
+    mBuilder.setOnlyAlertOnce(true)
+    mBuilder.setSmallIcon(notification.getSmallIcon(context, getDefaultSmallIcon(context)))
+    mBuilder.setLargeIcon(notification.getLargeIcon(context))
+    val iconColor = notification.getIconColor(config.getString("iconColor"))
+    if (iconColor.isNotEmpty()) {
+      try {
+        mBuilder.color = Color.parseColor(iconColor)
+      } catch (ex: IllegalArgumentException) {
+        throw Exception("Invalid color provided. Must be a hex string (ex: #ff0000")
+      }
+    }
+    createActionIntents(notification, mBuilder)
+    // notificationId is a unique int for each notification that you must define
+    val buildNotification = mBuilder.build()
+    if (notification.isScheduled) {
+      triggerScheduledNotification(buildNotification, notification)
+    } else {
+      notificationManager.notify(notification.id, buildNotification)
+      try {
+        NotificationPlugin.triggerNotification(notification.source ?: JSObject())
+      } catch (_: JSONException) {
+      }
+    }
+  }
+
+  // Create intents for open/dismiss actions
+  private fun createActionIntents(
+    notification: Notification,
+    mBuilder: NotificationCompat.Builder
+  ) {
+    // Open intent
+    val intent = buildIntent(notification, DEFAULT_PRESS_ACTION)
+    var flags = PendingIntent.FLAG_CANCEL_CURRENT
+    if (SDK_INT >= Build.VERSION_CODES.S) {
+      flags = flags or PendingIntent.FLAG_MUTABLE
+    }
+    val pendingIntent = PendingIntent.getActivity(context, notification.id, intent, flags)
+    mBuilder.setContentIntent(pendingIntent)
+
+    // Build action types
+    val actionTypeId = notification.actionTypeId
+    if (actionTypeId != null) {
+      val actionGroup = storage.getActionGroup(actionTypeId)
+      for (notificationAction in actionGroup) {
+        // TODO Add custom icons to actions
+        val actionIntent = buildIntent(notification, notificationAction!!.id)
+        val actionPendingIntent = PendingIntent.getActivity(
+          context,
+          (notification.id) + notificationAction.id.hashCode(),
+          actionIntent,
+          flags
+        )
+        val actionBuilder: NotificationCompat.Action.Builder = NotificationCompat.Action.Builder(
+          R.drawable.ic_transparent,
+          notificationAction.title,
+          actionPendingIntent
+        )
+        if (notificationAction.input) {
+          val remoteInput = RemoteInput.Builder(REMOTE_INPUT_KEY).setLabel(
+            notificationAction.title
+          ).build()
+          actionBuilder.addRemoteInput(remoteInput)
+        }
+        mBuilder.addAction(actionBuilder.build())
+      }
+    }
+
+    // Dismiss intent
+    val dissmissIntent = Intent(
+      context,
+      NotificationDismissReceiver::class.java
+    )
+    dissmissIntent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+    dissmissIntent.putExtra(NOTIFICATION_INTENT_KEY, notification.id)
+    dissmissIntent.putExtra(ACTION_INTENT_KEY, "dismiss")
+    val schedule = notification.schedule
+    dissmissIntent.putExtra(
+      NOTIFICATION_IS_REMOVABLE_KEY,
+      schedule == null || schedule.isRemovable()
+    )
+    flags = 0
+    if (SDK_INT >= Build.VERSION_CODES.S) {
+      flags = PendingIntent.FLAG_MUTABLE
+    }
+    val deleteIntent =
+      PendingIntent.getBroadcast(context, notification.id, dissmissIntent, flags)
+    mBuilder.setDeleteIntent(deleteIntent)
+  }
+
+  private fun buildIntent(notification: Notification, action: String?): Intent {
+    val intent = if (activity != null) {
+      Intent(context, activity.javaClass)
+    } else {
+      val packageName = context.packageName
+      context.packageManager.getLaunchIntentForPackage(packageName)!!
+    }
+    intent.action = Intent.ACTION_MAIN
+    intent.addCategory(Intent.CATEGORY_LAUNCHER)
+    intent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP
+    intent.putExtra(NOTIFICATION_INTENT_KEY, notification.id)
+    intent.putExtra(ACTION_INTENT_KEY, action)
+    intent.putExtra(NOTIFICATION_OBJ_INTENT_KEY, notification.source.toString())
+    val schedule = notification.schedule
+    intent.putExtra(NOTIFICATION_IS_REMOVABLE_KEY, schedule == null || schedule.isRemovable())
+    return intent
+  }
+
+  /**
+   * Build a notification trigger, such as triggering each N seconds, or
+   * on a certain date "shape" (such as every first of the month)
+   */
+  // TODO support different AlarmManager.RTC modes depending on priority
+  @SuppressLint("SimpleDateFormat")
+  private fun triggerScheduledNotification(notification: android.app.Notification, request: Notification) {
+    val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+    val schedule = request.schedule
+    val notificationIntent = Intent(
+      context,
+      TimedNotificationPublisher::class.java
+    )
+    notificationIntent.putExtra(NOTIFICATION_INTENT_KEY, request.id)
+    notificationIntent.putExtra(TimedNotificationPublisher.NOTIFICATION_KEY, notification)
+    var flags = PendingIntent.FLAG_CANCEL_CURRENT
+    if (SDK_INT >= Build.VERSION_CODES.S) {
+      flags = flags or PendingIntent.FLAG_MUTABLE
+    }
+    var pendingIntent =
+      PendingIntent.getBroadcast(context, request.id, notificationIntent, flags)
+
+    when (val scheduleKind = schedule?.kind) {
+      is ScheduleKind.At -> {
+        val at = scheduleKind.date
+        if (at.time < Date().time) {
+          Logger.error(Logger.tags("Notification"), "Scheduled time must be *after* current time", null)
+          return
+        }
+        if (scheduleKind.repeating) {
+          val interval: Long = at.time - Date().time
+          alarmManager.setRepeating(AlarmManager.RTC, at.time, interval, pendingIntent)
+        } else {
+          setExactIfPossible(alarmManager, schedule, at.time, pendingIntent)
+        }
+      }
+      is ScheduleKind.Interval -> {
+        val trigger = scheduleKind.interval.nextTrigger(Date())
+        notificationIntent.putExtra(TimedNotificationPublisher.CRON_KEY, scheduleKind.interval.toMatchString())
+        pendingIntent =
+          PendingIntent.getBroadcast(context, request.id, notificationIntent, flags)
+        setExactIfPossible(alarmManager, schedule, trigger, pendingIntent)
+        val sdf = SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
+        Logger.debug(
+          Logger.tags("Notification"),
+          "notification " + request.id + " will next fire at " + sdf.format(Date(trigger))
+        )
+      }
+      is ScheduleKind.Every -> {
+        val everyInterval = getIntervalTime(scheduleKind.interval, scheduleKind.count)
+        val startTime: Long = Date().time + everyInterval
+        alarmManager.setRepeating(AlarmManager.RTC, startTime, everyInterval, pendingIntent)
+      }
+      else -> {}
+    }
+  }
+
+  @SuppressLint("ObsoleteSdkInt", "MissingPermission")
+  private fun setExactIfPossible(
+    alarmManager: AlarmManager,
+    schedule: NotificationSchedule,
+    trigger: Long,
+    pendingIntent: PendingIntent
+  ) {
+    if (SDK_INT >= Build.VERSION_CODES.S && !alarmManager.canScheduleExactAlarms()) {
+      if (SDK_INT >= Build.VERSION_CODES.M && schedule.whileIdle) {
+        alarmManager.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, trigger, pendingIntent)
+      } else {
+        alarmManager[AlarmManager.RTC, trigger] = pendingIntent
+      }
+    } else {
+      if (SDK_INT >= Build.VERSION_CODES.M && schedule.whileIdle) {
+        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, trigger, pendingIntent)
+      } else {
+        alarmManager.setExact(AlarmManager.RTC, trigger, pendingIntent)
+      }
+    }
+  }
+
+  fun cancel(notifications: List<Int>) {
+    for (id in notifications) {
+      dismissVisibleNotification(id)
+      cancelTimerForNotification(id)
+      storage.deleteNotification(id.toString())
+    }
+  }
+
+  private fun cancelTimerForNotification(notificationId: Int) {
+    val intent = Intent(context, TimedNotificationPublisher::class.java)
+    var flags = 0
+    if (SDK_INT >= Build.VERSION_CODES.S) {
+      flags = PendingIntent.FLAG_MUTABLE
+    }
+    val pi = PendingIntent.getBroadcast(context, notificationId, intent, flags)
+    if (pi != null) {
+      val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+      alarmManager.cancel(pi)
+    }
+  }
+
+  private fun dismissVisibleNotification(notificationId: Int) {
+    val notificationManager = NotificationManagerCompat.from(
+      context
+    )
+    notificationManager.cancel(notificationId)
+  }
+
+  fun areNotificationsEnabled(): Boolean {
+    val notificationManager = NotificationManagerCompat.from(context)
+    return notificationManager.areNotificationsEnabled()
+  }
+
+  private fun getDefaultSoundUrl(context: Context): Uri? {
+    val soundId = getDefaultSound(context)
+    return if (soundId != AssetUtils.RESOURCE_ID_ZERO_VALUE) {
+      Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.packageName + "/" + soundId)
+    } else null
+  }
+
+  private fun getDefaultSound(context: Context): Int {
+    if (defaultSoundID != AssetUtils.RESOURCE_ID_ZERO_VALUE) return defaultSoundID
+    var resId: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+    val soundConfigResourceName = AssetUtils.getResourceBaseName(config.getString("sound"))
+    if (soundConfigResourceName != null) {
+      resId = AssetUtils.getResourceID(context, soundConfigResourceName, "raw")
+    }
+    defaultSoundID = resId
+    return resId
+  }
+
+  private fun getDefaultSmallIcon(context: Context): Int {
+    if (defaultSmallIconID != AssetUtils.RESOURCE_ID_ZERO_VALUE) return defaultSmallIconID
+    var resId: Int = AssetUtils.RESOURCE_ID_ZERO_VALUE
+    val smallIconConfigResourceName = AssetUtils.getResourceBaseName(config.getString("icon"))
+    if (smallIconConfigResourceName != null) {
+      resId = AssetUtils.getResourceID(context, smallIconConfigResourceName, "drawable")
+    }
+    if (resId == AssetUtils.RESOURCE_ID_ZERO_VALUE) {
+      resId = android.R.drawable.ic_dialog_info
+    }
+    defaultSmallIconID = resId
+    return resId
+  }
+}
+
+class NotificationDismissReceiver : BroadcastReceiver() {
+  override fun onReceive(context: Context, intent: Intent) {
+    val intExtra =
+      intent.getIntExtra(NOTIFICATION_INTENT_KEY, Int.MIN_VALUE)
+    if (intExtra == Int.MIN_VALUE) {
+      Logger.error(Logger.tags("Notification"), "Invalid notification dismiss operation", null)
+      return
+    }
+    val isRemovable =
+      intent.getBooleanExtra(NOTIFICATION_IS_REMOVABLE_KEY, true)
+    if (isRemovable) {
+      val notificationStorage = NotificationStorage(context)
+      notificationStorage.deleteNotification(intExtra.toString())
+    }
+  }
+}
+
+class TimedNotificationPublisher : BroadcastReceiver() {
+  /**
+   * Restore and present notification
+   */
+  override fun onReceive(context: Context, intent: Intent) {
+    val notificationManager =
+      context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+    val notification = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+      intent.getParcelableExtra(
+        NOTIFICATION_KEY,
+        android.app.Notification::class.java
+      )
+    } else {
+      getParcelableExtraLegacy(intent, NOTIFICATION_KEY)
+    }
+    notification?.`when` = System.currentTimeMillis()
+    val id = intent.getIntExtra(NOTIFICATION_INTENT_KEY, Int.MIN_VALUE)
+    if (id == Int.MIN_VALUE) {
+      Logger.error(Logger.tags("Notification"), "No valid id supplied", null)
+    }
+    val storage = NotificationStorage(context)
+    val notificationJson = storage.getSavedNotificationAsJSObject(id.toString())
+    if (notificationJson != null) {
+      NotificationPlugin.triggerNotification(notificationJson)
+    }
+    notificationManager.notify(id, notification)
+    if (!rescheduleNotificationIfNeeded(context, intent, id)) {
+      storage.deleteNotification(id.toString())
+    }
+  }
+
+  @Suppress("DEPRECATION")
+  private fun getParcelableExtraLegacy(intent: Intent, string: String): android.app.Notification? {
+    return intent.getParcelableExtra(string)
+  }
+
+  @SuppressLint("MissingPermission", "SimpleDateFormat")
+  private fun rescheduleNotificationIfNeeded(context: Context, intent: Intent, id: Int): Boolean {
+    val dateString = intent.getStringExtra(CRON_KEY)
+    if (dateString != null) {
+      val date = DateMatch.fromMatchString(dateString)
+      val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+      val trigger = date.nextTrigger(Date())
+      val clone = intent.clone() as Intent
+      var flags = PendingIntent.FLAG_CANCEL_CURRENT
+      if (SDK_INT >= Build.VERSION_CODES.S) {
+        flags = flags or PendingIntent.FLAG_MUTABLE
+      }
+      val pendingIntent = PendingIntent.getBroadcast(context, id, clone, flags)
+      if (SDK_INT >= Build.VERSION_CODES.S && !alarmManager.canScheduleExactAlarms()) {
+        alarmManager[AlarmManager.RTC, trigger] = pendingIntent
+      } else {
+        alarmManager.setExact(AlarmManager.RTC, trigger, pendingIntent)
+      }
+      val sdf = SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
+      Logger.debug(
+        Logger.tags("Notification"),
+        "notification " + id + " will next fire at " + sdf.format(Date(trigger))
+      )
+      return true
+    }
+    return false
+  }
+
+  companion object {
+    var NOTIFICATION_KEY = "NotificationPublisher.notification"
+    var CRON_KEY = "NotificationPublisher.cron"
+  }
+}
+
+class LocalNotificationRestoreReceiver : BroadcastReceiver() {
+  @SuppressLint("ObsoleteSdkInt")
+  override fun onReceive(context: Context, intent: Intent) {
+    if (SDK_INT >= Build.VERSION_CODES.N) {
+      val um = context.getSystemService(
+        UserManager::class.java
+      )
+      if (um == null || !um.isUserUnlocked) return
+    }
+    val storage = NotificationStorage(context)
+    val ids = storage.getSavedNotificationIds()
+    val notifications = mutableListOf<Notification>()
+    val updatedNotifications = mutableListOf<Notification>()
+    for (id in ids) {
+      val notification = storage.getSavedNotification(id) ?: continue
+      val schedule = notification.schedule
+      if (schedule != null && schedule.kind is ScheduleKind.At) {
+        val at: Date = schedule.kind.date
+        if (at.before(Date())) {
+          // modify the scheduled date in order to show notifications that would have been delivered while device was off.
+          val newDateTime = Date().time + 15 * 1000
+          schedule.kind.date = Date(newDateTime)
+          updatedNotifications.add(notification)
+        }
+      }
+      notifications.add(notification)
+    }
+    if (updatedNotifications.size > 0) {
+      storage.appendNotifications(updatedNotifications)
+    }
+
+    val notificationManager = TauriNotificationManager(storage, null, context, PluginManager.loadConfig(context, "notification"))
+    notificationManager.schedule(notifications)
+  }
+}

plugins/notification/android/src/main/res/drawable/ic_transparent.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="16dp"
+    android:height="16dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108">
+
+    <path
+        android:width="1dp"
+        android:color="@android:color/transparent" />
+
+</vector>

plugins/notification/guest-js/index.ts

@@ -24,7 +24,7 @@
  * @module
  */
 
-import { invoke } from "@tauri-apps/api/tauri";
+import { invoke, transformCallback } from '@tauri-apps/api/tauri'
 
 /**
  * Options to send a notification.
@@ -32,12 +32,269 @@ import { invoke } from "@tauri-apps/api/tauri";
  * @since 1.0.0
  */
 interface Options {
-  /** Notification title. */
-  title: string;
-  /** Optional notification body. */
-  body?: string;
-  /** Optional notification icon. */
-  icon?: string;
+  /**
+   * The notification identifier to reference this object later. Must be a 32-bit integer.
+   */
+  id?: number
+  /**
+   * Identifier of the {@link Channel} that deliveres this notification.
+   * 
+   * If the channel does not exist, the notification won't fire.
+   * Make sure the channel exists with {@link listChannels} and {@link createChannel}.
+   */
+  channelId?: string
+  /**
+   * Notification title.
+   */
+  title: string
+  /**
+   * Optional notification body.
+   * */
+  body?: string
+  /**
+   * Schedule this notification to fire on a later time or a fixed interval.
+   */
+  schedule?: Schedule
+  /**
+   * Multiline text.
+   * Changes the notification style to big text.
+   * Cannot be used with `inboxLines`.
+   */
+  largeBody?: string
+  /**
+   * Detail text for the notification with `largeBody`, `inboxLines` or `groupSummary`.
+   */
+  summary?: string
+  /**
+   * Defines an action type for this notification.
+   */
+  actionTypeId?: string
+  /**
+   * Identifier used to group multiple notifications.
+   * 
+   * https://developer.apple.com/documentation/usernotifications/unmutablenotificationcontent/1649872-threadidentifier
+   */
+  group?: string
+  /**
+   * Instructs the system that this notification is the summary of a group on Android.
+   */
+  groupSummary?: boolean
+  /**
+   * The sound resource name. Only available on mobile.
+   */
+  sound?: string
+  /**
+   * List of lines to add to the notification.
+   * Changes the notification style to inbox.
+   * Cannot be used with `largeBody`.
+   * 
+   * Only supports up to 5 lines.
+   */
+  inboxLines?: string[]
+  /**
+   * Notification icon.
+   * 
+   * On Android the icon must be placed in the app's `res/drawable` folder.
+   */
+  icon?: string
+  /**
+   * Notification large icon (Android).
+   * 
+   * The icon must be placed in the app's `res/drawable` folder.
+   */
+  largeIcon?: string
+  /**
+   * Icon color on Android.
+   */
+  iconColor?: string
+  /**
+   * Notification attachments.
+   */
+  attachments?: Attachment[]
+  /**
+   * Extra payload to store in the notification.
+   */
+  extra?: { [key: string]: unknown }
+  /**
+   * If true, the notification cannot be dismissed by the user on Android.
+   * 
+   * An application service must manage the dismissal of the notification.
+   * It is typically used to indicate a background task that is pending (e.g. a file download)
+   * or the user is engaged with (e.g. playing music).
+   */
+  ongoing?: boolean
+  /**
+   * Automatically cancel the notification when the user clicks on it.
+   */
+  autoCancel?: boolean
+  /**
+   * Changes the notification presentation to be silent on iOS (no badge, no sound, not listed).
+   */
+  silent?: boolean
+  /**
+   * Notification visibility.
+   */
+  visibility?: Visibility
+  /**
+   * Sets the number of items this notification represents on Android.
+   */
+  number?: number
+}
+
+type ScheduleInterval = {
+  year?: number
+  month?: number
+  day?: number
+  /**
+   * 1 - Sunday
+   * 2 - Monday
+   * 3 - Tuesday
+   * 4 - Wednesday
+   * 5 - Thursday
+   * 6 - Friday
+   * 7 - Saturday
+   */
+  weekday?: number
+  hour?: number
+  minute?: number
+  second?: number
+}
+
+enum ScheduleEvery {
+  Year = 'Year',
+  Month = 'Month',
+  TwoWeeks = 'TwoWeeks',
+  Week = 'Week',
+  Day = 'Day',
+  Hour = 'Hour',
+  Minute = 'Minute',
+  /**
+   * Not supported on iOS.
+   */
+  Second = 'Second'
+}
+
+type ScheduleData = {
+  kind: 'At',
+  data: {
+    date: Date
+    repeating: boolean
+  }
+} | {
+  kind: 'Interval',
+  data: ScheduleInterval
+} | {
+  kind: 'Every',
+  data: {
+    interval: ScheduleEvery
+  }
+}
+
+class Schedule {
+  kind: string
+  data: unknown
+
+  private constructor(schedule: ScheduleData) {
+    this.kind = schedule.kind
+    this.data = schedule.data
+  }
+
+  static at(date: Date, repeating = false) {
+    return new Schedule({ kind: 'At', data: { date, repeating } })
+  }
+
+  static interval(interval: ScheduleInterval) {
+    return new Schedule({ kind: 'Interval', data: interval })
+  }
+
+  static every(kind: ScheduleEvery) {
+    return new Schedule({ kind: 'Every', data: { interval: kind } })
+  }
+}
+
+/**
+ * Attachment of a notification.
+ */
+interface Attachment {
+  /** Attachment identifier. */
+  id: string
+  /** Attachment URL. Accepts the `asset` and `file` protocols. */
+  url: string
+}
+
+interface Action {
+  id: string
+  title: string
+  requiresAuthentication?: boolean
+  foreground?: boolean
+  destructive?: boolean
+  input?: boolean
+  inputButtonTitle?: string
+  inputPlaceholder?: string
+}
+
+interface ActionType {
+  /**
+   * The identifier of this action type
+   */
+  id: string
+  /**
+   * The list of associated actions
+   */
+  actions: Action[]
+  hiddenPreviewsBodyPlaceholder?: string,
+  customDismissAction?: boolean,
+  allowInCarPlay?: boolean,
+  hiddenPreviewsShowTitle?: boolean,
+  hiddenPreviewsShowSubtitle?: boolean,
+}
+
+interface PendingNotification {
+  id: number
+  title?: string
+  body?: string
+  schedule: Schedule
+}
+
+interface ActiveNotification {
+  id: number
+  tag?: string
+  title?: string
+  body?: string
+  group?: string
+  groupSummary: boolean
+  data: Record<string, string>
+  extra: Record<string, unknown>
+  attachments: Attachment[]
+  actionTypeId?: string
+  schedule?: Schedule
+  sound?: string
+}
+
+enum Importance {
+  None = 0,
+  Min,
+  Low,
+  Default,
+  High
+}
+
+enum Visibility {
+  Secret = -1,
+  Private,
+  Public
+}
+
+interface Channel {
+  id: string
+  name: string
+  description?: string
+  sound?: string
+  lights?: boolean
+  lightColor?: string
+  vibration?: boolean
+  importance?: Importance
+  visibility?: Visibility
 }
 
 /** Possible permission values. */
@@ -108,6 +365,241 @@ function sendNotification(options: Options | string): void {
   }
 }
 
-export type { Options, Permission };
+/**
+ * Register actions that are performed when the user clicks on the notification.
+ * 
+ * @example
+ * ```typescript
+ * import { registerActionTypes } from '@tauri-apps/api/notification';
+ * await registerActionTypes([{
+ *   id: 'tauri',
+ *   actions: [{
+ *     id: 'my-action',
+ *     title: 'Settings'
+ *   }]
+ * }])
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function registerActionTypes(types: ActionType[]): Promise<void> {
+  return invoke('plugin:notification|register_action_types', { types })
+}
+
+/**
+ * Retrieves the list of pending notifications.
+ * 
+ * @example
+ * ```typescript
+ * import { pending } from '@tauri-apps/api/notification';
+ * const pendingNotifications = await pending();
+ * ```
+ *
+ * @returns A promise resolving to the list of pending notifications.
+ *
+ * @since 2.0.0
+ */
+async function pending(): Promise<PendingNotification[]> {
+  return invoke('plugin:notification|get_pending')
+}
+
+/**
+ * Cancels the pending notifications with the given list of identifiers.
+ * 
+ * @example
+ * ```typescript
+ * import { cancel } from '@tauri-apps/api/notification';
+ * await cancel([-34234, 23432, 4311]);
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function cancel(notifications: number[]): Promise<void> {
+  return invoke('plugin:notification|cancel', { notifications })
+}
+
+/**
+ * Cancels all pending notifications.
+ * 
+ * @example
+ * ```typescript
+ * import { cancelAll } from '@tauri-apps/api/notification';
+ * await cancelAll();
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function cancelAll(): Promise<void> {
+  return invoke('plugin:notification|cancel')
+}
 
-export { sendNotification, requestPermission, isPermissionGranted };
+/**
+ * Retrieves the list of active notifications.
+ * 
+ * @example
+ * ```typescript
+ * import { active } from '@tauri-apps/api/notification';
+ * const activeNotifications = await active();
+ * ```
+ *
+ * @returns A promise resolving to the list of active notifications.
+ *
+ * @since 2.0.0
+ */
+async function active(): Promise<ActiveNotification[]> {
+  return invoke('plugin:notification|get_active')
+}
+
+/**
+ * Removes the active notifications with the given list of identifiers.
+ * 
+ * @example
+ * ```typescript
+ * import { cancel } from '@tauri-apps/api/notification';
+ * await cancel([-34234, 23432, 4311])
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function removeActive(notifications: number[]): Promise<void> {
+  return invoke('plugin:notification|remove_active', { notifications })
+}
+
+/**
+ * Removes all active notifications.
+ * 
+ * @example
+ * ```typescript
+ * import { removeAllActive } from '@tauri-apps/api/notification';
+ * await removeAllActive()
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function removeAllActive(): Promise<void> {
+  return invoke('plugin:notification|remove_active')
+}
+
+/**
+ * Removes all active notifications.
+ * 
+ * @example
+ * ```typescript
+ * import { createChannel, Importance, Visibility } from '@tauri-apps/api/notification';
+ * await createChannel({
+ *   id: 'new-messages',
+ *   name: 'New Messages',
+ *   lights: true,
+ *   vibration: true,
+ *   importance: Importance.Default,
+ *   visibility: Visibility.Private
+ * });
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function createChannel(channel: Channel): Promise<void> {
+  return invoke('plugin:notification|create_channel', { ...channel })
+}
+
+/**
+ * Removes the channel with the given identifier.
+ * 
+ * @example
+ * ```typescript
+ * import { removeChannel } from '@tauri-apps/api/notification';
+ * await removeChannel();
+ * ```
+ *
+ * @returns A promise indicating the success or failure of the operation.
+ *
+ * @since 2.0.0
+ */
+async function removeChannel(id: string): Promise<void> {
+  return invoke('plugin:notification|delete_channel', { id })
+}
+
+/**
+ * Retrieves the list of notification channels.
+ * 
+ * @example
+ * ```typescript
+ * import { channels } from '@tauri-apps/api/notification';
+ * const notificationChannels = await channels();
+ * ```
+ *
+ * @returns A promise resolving to the list of notification channels.
+ *
+ * @since 2.0.0
+ */
+async function channels(): Promise<Channel[]> {
+  return invoke('plugin:notification|getActive')
+}
+
+class EventChannel {
+  id: number
+  unregisterFn: (channel: EventChannel) => Promise<void>
+
+  constructor(id: number, unregisterFn: (channel: EventChannel) => Promise<void>) {
+    this.id = id
+    this.unregisterFn = unregisterFn
+  }
+
+  toJSON(): string {
+    return `__CHANNEL__:${this.id}`
+  }
+
+  async unregister(): Promise<void> {
+    return this.unregisterFn(this)
+  }
+}
+
+// TODO: use addPluginListener API on @tauri-apps/api/tauri 2.0.0-alpha.4
+async function onNotificationReceived(cb: (notification: Options) => void): Promise<EventChannel> {
+  const channelId = transformCallback(cb)
+  const handler = new EventChannel(channelId, (channel) => invoke('plugin:notification|remove_listener', { event: 'notification', channelId: channel.id }))
+  return invoke('plugin:notification|register_listener', { event: 'notification', handler }).then(() => handler)
+}
+
+// TODO: use addPluginListener API on @tauri-apps/api/tauri 2.0.0-alpha.4
+async function onAction(cb: (notification: Options) => void): Promise<EventChannel> {
+  const channelId = transformCallback(cb)
+  const handler = new EventChannel(channelId, (channel) => invoke('plugin:notification|remove_listener', { event: 'actionPerformed', channelId: channel.id }))
+  return invoke('plugin:notification|register_listener', { event: 'actionPerformed', handler }).then(() => handler)
+}
+
+
+export type { Attachment, Options, Permission, Action, ActionType, PendingNotification, ActiveNotification, Channel }
+
+export {
+  Importance,
+  Visibility,
+  sendNotification,
+  requestPermission,
+  isPermissionGranted,
+  registerActionTypes,
+  pending,
+  cancel,
+  cancelAll,
+  active,
+  removeActive,
+  removeAllActive,
+  createChannel,
+  removeChannel,
+  channels,
+
+  onNotificationReceived,
+  onAction
+}

plugins/notification/ios/Package.swift

@@ -4,16 +4,16 @@
 import PackageDescription
 
 let package = Package(
-    name: "tauri-plugin-{{ plugin_name }}",
+    name: "tauri-plugin-notification",
     platforms: [
         .iOS(.v13),
     ],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.
         .library(
-            name: "tauri-plugin-{{ plugin_name }}",
+            name: "tauri-plugin-notification",
             type: .static,
-            targets: ["tauri-plugin-{{ plugin_name }}"]),
+            targets: ["tauri-plugin-notification"]),
     ],
     dependencies: [
         .package(name: "Tauri", path: "../.tauri/tauri-api")
@@ -22,7 +22,7 @@ let package = Package(
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
         // Targets can depend on other targets in this package, and on products in packages this package depends on.
         .target(
-            name: "tauri-plugin-{{ plugin_name }}",
+            name: "tauri-plugin-notification",
             dependencies: [
                 .byName(name: "Tauri")
             ],

plugins/notification/ios/Sources/Notification.swift

@@ -0,0 +1,272 @@
+import Tauri
+import UserNotifications
+
+enum NotificationError: LocalizedError {
+  case contentNoId
+  case contentNoTitle
+  case contentNoBody
+  case triggerRepeatIntervalTooShort
+  case attachmentNoId
+  case attachmentNoUrl
+  case attachmentFileNotFound(path: String)
+  case attachmentUnableToCreate(String)
+  case pastScheduledTime
+  case invalidDate(String)
+
+  var errorDescription: String? {
+    switch self {
+    case .contentNoId:
+      return "Missing notification identifier"
+    case .contentNoTitle:
+      return "Missing notification title"
+    case .contentNoBody:
+      return "Missing notification body"
+    case .triggerRepeatIntervalTooShort:
+      return "Schedule interval too short, must be a least 1 minute"
+    case .attachmentNoId:
+      return "Missing attachment identifier"
+    case .attachmentNoUrl:
+      return "Missing attachment URL"
+    case .attachmentFileNotFound(let path):
+      return "Unable to find file \(path) for attachment"
+    case .attachmentUnableToCreate(let error):
+      return "Failed to create attachment: \(error)"
+    case .pastScheduledTime:
+      return "Scheduled time must be *after* current time"
+    case .invalidDate(let date):
+      return "Could not parse date \(date)"
+    }
+  }
+}
+
+func makeNotificationContent(_ notification: JSObject) throws -> UNNotificationContent {
+  guard let title = notification["title"] as? String else {
+    throw NotificationError.contentNoTitle
+  }
+  guard let body = notification["body"] as? String else {
+    throw NotificationError.contentNoBody
+  }
+
+  let extra = notification["extra"] as? JSObject ?? [:]
+  let schedule = notification["schedule"] as? JSObject ?? [:]
+  let content = UNMutableNotificationContent()
+  content.title = NSString.localizedUserNotificationString(forKey: title, arguments: nil)
+  content.body = NSString.localizedUserNotificationString(
+    forKey: body,
+    arguments: nil)
+
+  content.userInfo = [
+    "__EXTRA__": extra,
+    "__SCHEDULE__": schedule,
+  ]
+
+  if let actionTypeId = notification["actionTypeId"] as? String {
+    content.categoryIdentifier = actionTypeId
+  }
+
+  if let threadIdentifier = notification["group"] as? String {
+    content.threadIdentifier = threadIdentifier
+  }
+
+  if let summaryArgument = notification["summary"] as? String {
+    content.summaryArgument = summaryArgument
+  }
+
+  if let sound = notification["sound"] as? String {
+    content.sound = UNNotificationSound(named: UNNotificationSoundName(sound))
+  }
+
+  if let attachments = notification["attachments"] as? [JSObject] {
+    content.attachments = try makeAttachments(attachments)
+  }
+
+  return content
+}
+
+func makeAttachments(_ attachments: [JSObject]) throws -> [UNNotificationAttachment] {
+  var createdAttachments = [UNNotificationAttachment]()
+
+  for attachment in attachments {
+    guard let id = attachment["id"] as? String else {
+      throw NotificationError.attachmentNoId
+    }
+    guard let url = attachment["url"] as? String else {
+      throw NotificationError.attachmentNoUrl
+    }
+    guard let urlObject = makeAttachmentUrl(url) else {
+      throw NotificationError.attachmentFileNotFound(path: url)
+    }
+
+    let options = attachment["options"] as? JSObject ?? [:]
+
+    do {
+      let newAttachment = try UNNotificationAttachment(
+        identifier: id, url: urlObject, options: makeAttachmentOptions(options))
+      createdAttachments.append(newAttachment)
+    } catch {
+      throw NotificationError.attachmentUnableToCreate(error.localizedDescription)
+    }
+  }
+
+  return createdAttachments
+}
+
+func makeAttachmentUrl(_ path: String) -> URL? {
+  return URL(string: path)
+}
+
+func makeAttachmentOptions(_ options: JSObject) -> JSObject {
+  var opts: JSObject = [:]
+
+  if let iosUNNotificationAttachmentOptionsTypeHintKey = options[
+    "iosUNNotificationAttachmentOptionsTypeHintKey"] as? String
+  {
+    opts[UNNotificationAttachmentOptionsTypeHintKey] = iosUNNotificationAttachmentOptionsTypeHintKey
+  }
+  if let iosUNNotificationAttachmentOptionsThumbnailHiddenKey = options[
+    "iosUNNotificationAttachmentOptionsThumbnailHiddenKey"] as? String
+  {
+    opts[UNNotificationAttachmentOptionsThumbnailHiddenKey] =
+      iosUNNotificationAttachmentOptionsThumbnailHiddenKey
+  }
+  if let iosUNNotificationAttachmentOptionsThumbnailClippingRectKey = options[
+    "iosUNNotificationAttachmentOptionsThumbnailClippingRectKey"] as? String
+  {
+    opts[UNNotificationAttachmentOptionsThumbnailClippingRectKey] =
+      iosUNNotificationAttachmentOptionsThumbnailClippingRectKey
+  }
+  if let iosUNNotificationAttachmentOptionsThumbnailTimeKey = options[
+    "iosUNNotificationAttachmentOptionsThumbnailTimeKey"] as? String
+  {
+    opts[UNNotificationAttachmentOptionsThumbnailTimeKey] =
+      iosUNNotificationAttachmentOptionsThumbnailTimeKey
+  }
+  return opts
+}
+
+func handleScheduledNotification(_ schedule: JSObject) throws
+  -> UNNotificationTrigger?
+{
+  let kind = schedule["kind"] as? String ?? ""
+  let payload = schedule["data"] as? JSObject ?? [:]
+  switch kind {
+  case "At":
+    let date = payload["date"] as? String ?? ""
+    let dateFormatter = DateFormatter()
+    dateFormatter.locale = Locale(identifier: "en_US_POSIX")
+    dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
+
+    if let at = dateFormatter.date(from: date) {
+      let repeats = payload["repeats"] as? Bool ?? false
+
+      let dateInfo = Calendar.current.dateComponents(in: TimeZone.current, from: at)
+
+      if dateInfo.date! < Date() {
+        throw NotificationError.pastScheduledTime
+      }
+
+      let dateInterval = DateInterval(start: Date(), end: dateInfo.date!)
+
+      // Notifications that repeat have to be at least a minute between each other
+      if repeats && dateInterval.duration < 60 {
+        throw NotificationError.triggerRepeatIntervalTooShort
+      }
+
+      return UNTimeIntervalNotificationTrigger(
+        timeInterval: dateInterval.duration, repeats: repeats)
+
+    } else {
+      throw NotificationError.invalidDate(date)
+    }
+  case "Interval":
+    let dateComponents = getDateComponents(payload)
+    return UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)
+  case "Every":
+    let interval = payload["interval"] as? String ?? ""
+    let count = schedule["count"] as? Int ?? 1
+
+    if let repeatDateInterval = getRepeatDateInterval(interval, count) {
+      // Notifications that repeat have to be at least a minute between each other
+      if repeatDateInterval.duration < 60 {
+        throw NotificationError.triggerRepeatIntervalTooShort
+      }
+
+      return UNTimeIntervalNotificationTrigger(
+        timeInterval: repeatDateInterval.duration, repeats: true)
+    }
+
+  default:
+    return nil
+  }
+
+  return nil
+}
+
+/// Given our schedule format, return a DateComponents object
+/// that only contains the components passed in.
+
+func getDateComponents(_ at: JSObject) -> DateComponents {
+  // var dateInfo = Calendar.current.dateComponents(in: TimeZone.current, from: Date())
+  // dateInfo.calendar = Calendar.current
+  var dateInfo = DateComponents()
+
+  if let year = at["year"] as? Int {
+    dateInfo.year = year
+  }
+  if let month = at["month"] as? Int {
+    dateInfo.month = month
+  }
+  if let day = at["day"] as? Int {
+    dateInfo.day = day
+  }
+  if let hour = at["hour"] as? Int {
+    dateInfo.hour = hour
+  }
+  if let minute = at["minute"] as? Int {
+    dateInfo.minute = minute
+  }
+  if let second = at["second"] as? Int {
+    dateInfo.second = second
+  }
+  if let weekday = at["weekday"] as? Int {
+    dateInfo.weekday = weekday
+  }
+  return dateInfo
+}
+
+/// Compute the difference between the string representation of a date
+/// interval and today. For example, if every is "month", then we
+/// return the interval between today and a month from today.
+
+func getRepeatDateInterval(_ every: String, _ count: Int) -> DateInterval? {
+  let cal = Calendar.current
+  let now = Date()
+  switch every {
+  case "Year":
+    let newDate = cal.date(byAdding: .year, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Month":
+    let newDate = cal.date(byAdding: .month, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "TwoWeeks":
+    let newDate = cal.date(byAdding: .weekOfYear, value: 2 * count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Week":
+    let newDate = cal.date(byAdding: .weekOfYear, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Day":
+    let newDate = cal.date(byAdding: .day, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Hour":
+    let newDate = cal.date(byAdding: .hour, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Minute":
+    let newDate = cal.date(byAdding: .minute, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  case "Second":
+    let newDate = cal.date(byAdding: .second, value: count, to: now)!
+    return DateInterval(start: now, end: newDate)
+  default:
+    return nil
+  }
+}

plugins/notification/ios/Sources/NotificationCategory.swift

@@ -0,0 +1,131 @@
+import Tauri
+import UserNotifications
+
+enum CategoryError: LocalizedError {
+  case noId
+  case noActionId
+
+  var errorDescription: String? {
+    switch self {
+    case .noId:
+      return "Action type `id` missing"
+    case .noActionId:
+      return "Action `id` missing"
+    }
+  }
+}
+
+public func makeCategories(_ actionTypes: [JSObject]) throws {
+  var createdCategories = [UNNotificationCategory]()
+
+  let generalCategory = UNNotificationCategory(
+    identifier: "GENERAL",
+    actions: [],
+    intentIdentifiers: [],
+    options: .customDismissAction)
+
+  createdCategories.append(generalCategory)
+  for type in actionTypes {
+    guard let id = type["id"] as? String else {
+      throw CategoryError.noId
+    }
+    let hiddenBodyPlaceholder = type["hiddenPreviewsBodyPlaceholder"] as? String ?? ""
+    let actions = type["actions"] as? [JSObject] ?? []
+
+    let newActions = try makeActions(actions)
+
+    // Create the custom actions for the TIMER_EXPIRED category.
+    var newCategory: UNNotificationCategory?
+
+    newCategory = UNNotificationCategory(
+      identifier: id,
+      actions: newActions,
+      intentIdentifiers: [],
+      hiddenPreviewsBodyPlaceholder: hiddenBodyPlaceholder,
+      options: makeCategoryOptions(type))
+
+    createdCategories.append(newCategory!)
+  }
+
+  let center = UNUserNotificationCenter.current()
+  center.setNotificationCategories(Set(createdCategories))
+}
+
+func makeActions(_ actions: [JSObject]) throws -> [UNNotificationAction] {
+  var createdActions = [UNNotificationAction]()
+
+  for action in actions {
+    guard let id = action["id"] as? String else {
+      throw CategoryError.noActionId
+    }
+    let title = action["title"] as? String ?? ""
+    let input = action["input"] as? Bool ?? false
+
+    var newAction: UNNotificationAction
+    if input {
+      let inputButtonTitle = action["inputButtonTitle"] as? String
+      let inputPlaceholder = action["inputPlaceholder"] as? String ?? ""
+
+      if inputButtonTitle != nil {
+        newAction = UNTextInputNotificationAction(
+          identifier: id,
+          title: title,
+          options: makeActionOptions(action),
+          textInputButtonTitle: inputButtonTitle!,
+          textInputPlaceholder: inputPlaceholder)
+      } else {
+        newAction = UNTextInputNotificationAction(
+          identifier: id, title: title, options: makeActionOptions(action))
+      }
+    } else {
+      // Create the custom actions for the TIMER_EXPIRED category.
+      newAction = UNNotificationAction(
+        identifier: id,
+        title: title,
+        options: makeActionOptions(action))
+    }
+    createdActions.append(newAction)
+  }
+
+  return createdActions
+}
+
+func makeActionOptions(_ action: JSObject) -> UNNotificationActionOptions {
+  let foreground = action["foreground"] as? Bool ?? false
+  let destructive = action["destructive"] as? Bool ?? false
+  let requiresAuthentication = action["requiresAuthentication"] as? Bool ?? false
+
+  if foreground {
+    return .foreground
+  }
+  if destructive {
+    return .destructive
+  }
+  if requiresAuthentication {
+    return .authenticationRequired
+  }
+  return UNNotificationActionOptions(rawValue: 0)
+}
+
+func makeCategoryOptions(_ type: JSObject) -> UNNotificationCategoryOptions {
+  let customDismiss = type["customDismissAction"] as? Bool ?? false
+  let carPlay = type["allowInCarPlay"] as? Bool ?? false
+  let hiddenPreviewsShowTitle = type["hiddenPreviewsShowTitle"] as? Bool ?? false
+  let hiddenPreviewsShowSubtitle = type["hiddenPreviewsShowSubtitle"] as? Bool ?? false
+
+  if customDismiss {
+    return .customDismissAction
+  }
+  if carPlay {
+    return .allowInCarPlay
+  }
+
+  if hiddenPreviewsShowTitle {
+    return .hiddenPreviewsShowTitle
+  }
+  if hiddenPreviewsShowSubtitle {
+    return .hiddenPreviewsShowSubtitle
+  }
+
+  return UNNotificationCategoryOptions(rawValue: 0)
+}

plugins/notification/ios/Sources/NotificationHandler.swift

@@ -0,0 +1,116 @@
+import Tauri
+import UserNotifications
+
+public class NotificationHandler: NSObject, NotificationHandlerProtocol {
+
+  public weak var plugin: Plugin?
+
+  private var notificationsMap = [String: JSObject]()
+
+  public func saveNotification(_ key: String, _ notification: JSObject) {
+    notificationsMap.updateValue(notification, forKey: key)
+  }
+
+  public func requestPermissions(with completion: ((Bool, Error?) -> Void)? = nil) {
+    let center = UNUserNotificationCenter.current()
+    center.requestAuthorization(options: [.badge, .alert, .sound]) { (granted, error) in
+      completion?(granted, error)
+    }
+  }
+
+  public func checkPermissions(with completion: ((UNAuthorizationStatus) -> Void)? = nil) {
+    let center = UNUserNotificationCenter.current()
+    center.getNotificationSettings { settings in
+      completion?(settings.authorizationStatus)
+    }
+  }
+
+  public func willPresent(notification: UNNotification) -> UNNotificationPresentationOptions {
+    let notificationData = makeNotificationRequestJSObject(notification.request)
+    self.plugin?.trigger("notification", data: notificationData)
+
+    if let options = notificationsMap[notification.request.identifier] {
+      let silent = options["silent"] as? Bool ?? false
+      if silent {
+        return UNNotificationPresentationOptions.init(rawValue: 0)
+      }
+    }
+
+    return [
+      .badge,
+      .sound,
+      .alert,
+    ]
+  }
+
+  public func didReceive(response: UNNotificationResponse) {
+    var data = JSObject()
+
+    let originalNotificationRequest = response.notification.request
+    let actionId = response.actionIdentifier
+
+    // We turn the two default actions (open/dismiss) into generic strings
+    if actionId == UNNotificationDefaultActionIdentifier {
+      data["actionId"] = "tap"
+    } else if actionId == UNNotificationDismissActionIdentifier {
+      data["actionId"] = "dismiss"
+    } else {
+      data["actionId"] = actionId
+    }
+
+    // If the type of action was for an input type, get the value
+    if let inputType = response as? UNTextInputNotificationResponse {
+      data["inputValue"] = inputType.userText
+    }
+
+    data["notification"] = makeNotificationRequestJSObject(originalNotificationRequest)
+
+    self.plugin?.trigger("actionPerformed", data: data)
+  }
+
+  /**
+    * Turn a UNNotificationRequest into a JSObject to return back to the client.
+    */
+  func makeNotificationRequestJSObject(_ request: UNNotificationRequest) -> JSObject {
+    let notificationRequest = notificationsMap[request.identifier] ?? [:]
+    var notification = makePendingNotificationRequestJSObject(request)
+    notification["sound"] = notificationRequest["sound"] ?? ""
+    notification["actionTypeId"] = request.content.categoryIdentifier
+    notification["attachments"] = notificationRequest["attachments"] ?? [JSObject]()
+    return notification
+  }
+
+  func makePendingNotificationRequestJSObject(_ request: UNNotificationRequest) -> JSObject {
+    var notification: JSObject = [
+      "id": Int(request.identifier) ?? -1,
+      "title": request.content.title,
+      "body": request.content.body,
+    ]
+
+    if let userInfo = JSTypes.coerceDictionaryToJSObject(request.content.userInfo) {
+      var extra = userInfo["__EXTRA__"] as? JSObject ?? userInfo
+
+      // check for any dates and convert them to strings
+      for (key, value) in extra {
+        if let date = value as? Date {
+          let dateString = ISO8601DateFormatter().string(from: date)
+          extra[key] = dateString
+        }
+      }
+
+      notification["extra"] = extra
+
+      if var schedule = userInfo["__SCHEDULE__"] as? JSObject {
+        // convert schedule at date to string
+        if let date = schedule["at"] as? Date {
+          let dateString = ISO8601DateFormatter().string(from: date)
+          schedule["at"] = dateString
+        }
+
+        notification["schedule"] = schedule
+      }
+    }
+
+    return notification
+  }
+}

plugins/notification/ios/Sources/NotificationManager.swift

@@ -0,0 +1,39 @@
+import Foundation
+import UserNotifications
+
+@objc public protocol NotificationHandlerProtocol {
+  func willPresent(notification: UNNotification) -> UNNotificationPresentationOptions
+  func didReceive(response: UNNotificationResponse)
+}
+
+@objc public class NotificationManager: NSObject, UNUserNotificationCenterDelegate {
+  public weak var notificationHandler: NotificationHandlerProtocol?
+
+  override init() {
+    super.init()
+    let center = UNUserNotificationCenter.current()
+    center.delegate = self
+  }
+
+  public func userNotificationCenter(_ center: UNUserNotificationCenter,
+                                    willPresent notification: UNNotification,
+                                    withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
+    var presentationOptions: UNNotificationPresentationOptions? = nil
+
+    if notification.request.trigger?.isKind(of: UNPushNotificationTrigger.self) != true {
+      presentationOptions = notificationHandler?.willPresent(notification: notification)
+    }
+
+    completionHandler(presentationOptions ?? [])
+  }
+
+  public func userNotificationCenter(_ center: UNUserNotificationCenter,
+                                      didReceive response: UNNotificationResponse,
+                                      withCompletionHandler completionHandler: @escaping () -> Void) {
+    if response.notification.request.trigger?.isKind(of: UNPushNotificationTrigger.self) != true {
+      notificationHandler?.didReceive(response: response)
+    }
+
+    completionHandler()
+  }
+}

plugins/notification/ios/Sources/NotificationPlugin.swift

@@ -1,24 +1,209 @@
+import SwiftRs
+import Tauri
 import UIKit
+import UserNotifications
 import WebKit
-import Tauri
-import SwiftRs
+
+enum ShowNotificationError: LocalizedError {
+  case noId
+  case make(Error)
+  case create(Error)
+
+  var errorDescription: String? {
+    switch self {
+    case .noId:
+      return "notification `id` missing"
+    case .make(let error):
+      return "Unable to make notification: \(error)"
+    case .create(let error):
+      return "Unable to create notification: \(error)"
+    }
+  }
+}
+
+func showNotification(invoke: Invoke, notification: JSObject)
+  throws -> UNNotificationRequest
+{
+  guard let identifier = notification["id"] as? Int else {
+    throw ShowNotificationError.noId
+  }
+
+  var content: UNNotificationContent
+  do {
+    content = try makeNotificationContent(notification)
+  } catch {
+    throw ShowNotificationError.make(error)
+  }
+
+  var trigger: UNNotificationTrigger?
+
+  do {
+    if let schedule = notification["schedule"] as? JSObject {
+      try trigger = handleScheduledNotification(schedule)
+    }
+  } catch {
+    throw ShowNotificationError.create(error)
+  }
+
+  // Schedule the request.
+  let request = UNNotificationRequest(
+    identifier: "\(identifier)", content: content, trigger: trigger
+  )
+
+  let center = UNUserNotificationCenter.current()
+  center.add(request) { (error: Error?) in
+    if let theError = error {
+      invoke.reject(theError.localizedDescription)
+    }
+  }
+
+  return request
+}
 
 class NotificationPlugin: Plugin {
-	@objc public func requestPermission(_ invoke: Invoke) throws {
-		invoke.resolve(["permissionState": "granted"])
-	}
-
-	@objc public func permissionState(_ invoke: Invoke) throws {
-		invoke.resolve(["permissionState": "granted"])
-	}
-
-	@objc public func notify(_ invoke: Invoke) throws {
-		// TODO
-		invoke.resolve()
-	}
+  let notificationHandler = NotificationHandler()
+  let notificationManager = NotificationManager()
+
+  override init() {
+    super.init()
+    notificationManager.notificationHandler = notificationHandler
+    notificationHandler.plugin = self
+  }
+
+  @objc public func show(_ invoke: Invoke) throws {
+    let request = try showNotification(invoke: invoke, notification: invoke.data)
+    notificationHandler.saveNotification(request.identifier, invoke.data)
+    invoke.resolve([
+      "id": Int(request.identifier) ?? -1
+    ])
+  }
+
+  @objc public func batch(_ invoke: Invoke) throws {
+    guard let notifications = invoke.getArray("notifications", JSObject.self) else {
+      invoke.reject("`notifications` array is required")
+      return
+    }
+    var ids = [Int]()
+
+    for notification in notifications {
+      let request = try showNotification(invoke: invoke, notification: notification)
+      notificationHandler.saveNotification(request.identifier, notification)
+      ids.append(Int(request.identifier) ?? -1)
+    }
+
+    invoke.resolve([
+      "notifications": ids
+    ])
+  }
+
+  @objc public override func requestPermissions(_ invoke: Invoke) {
+    notificationHandler.requestPermissions { granted, error in
+      guard error == nil else {
+        invoke.reject(error!.localizedDescription)
+        return
+      }
+      invoke.resolve(["permissionState": granted ? "granted" : "denied"])
+    }
+  }
+
+  @objc public override func checkPermissions(_ invoke: Invoke) {
+    notificationHandler.checkPermissions { status in
+      let permission: String
+
+      switch status {
+      case .authorized, .ephemeral, .provisional:
+        permission = "granted"
+      case .denied:
+        permission = "denied"
+      case .notDetermined:
+        permission = "default"
+      @unknown default:
+        permission = "default"
+      }
+
+      invoke.resolve(["permissionState": permission])
+    }
+  }
+
+  @objc func cancel(_ invoke: Invoke) {
+    guard let notifications = invoke.getArray("notifications", NSNumber.self),
+      notifications.count > 0
+    else {
+      invoke.reject("`notifications` input is required")
+      return
+    }
+
+    UNUserNotificationCenter.current().removePendingNotificationRequests(
+      withIdentifiers: notifications.map({ (id) -> String in
+        return id.stringValue
+      })
+    )
+    invoke.resolve()
+  }
+
+  @objc func getPending(_ invoke: Invoke) {
+    UNUserNotificationCenter.current().getPendingNotificationRequests(completionHandler: {
+      (notifications) in
+      let ret = notifications.compactMap({ [weak self] (notification) -> JSObject? in
+        return self?.notificationHandler.makePendingNotificationRequestJSObject(notification)
+      })
+
+      invoke.resolve([
+        "notifications": ret
+      ])
+    })
+  }
+
+  @objc func registerActionTypes(_ invoke: Invoke) throws {
+    guard let types = invoke.getArray("types", JSObject.self) else {
+      return
+    }
+    try makeCategories(types)
+    invoke.resolve()
+  }
+
+  @objc func removeActive(_ invoke: Invoke) {
+    if let notifications = invoke.getArray("notifications", JSObject.self) {
+      let ids = notifications.map { "\($0["id"] ?? "")" }
+      UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: ids)
+      invoke.resolve()
+    } else {
+      UNUserNotificationCenter.current().removeAllDeliveredNotifications()
+      DispatchQueue.main.async(execute: {
+        UIApplication.shared.applicationIconBadgeNumber = 0
+      })
+      invoke.resolve()
+    }
+  }
+
+  @objc func getActive(_ invoke: Invoke) {
+    UNUserNotificationCenter.current().getDeliveredNotifications(completionHandler: {
+      (notifications) in
+      let ret = notifications.map({ (notification) -> [String: Any] in
+        return self.notificationHandler.makeNotificationRequestJSObject(
+          notification.request)
+      })
+      invoke.resolve([
+        "notifications": ret
+      ])
+    })
+  }
+
+  @objc func createChannel(_ invoke: Invoke) {
+    invoke.reject("not implemented")
+  }
+
+  @objc func deleteChannel(_ invoke: Invoke) {
+    invoke.reject("not implemented")
+  }
+
+  @objc func listChannels(_ invoke: Invoke) {
+    invoke.reject("not implemented")
+  }
+
 }
 
 @_cdecl("init_plugin_notification")
-func initPlugin(name: SRString, webview: WKWebView?) {
-	Tauri.registerPlugin(webview: webview, name: name.toString(), plugin: NotificationPlugin())
+func initPlugin() -> Plugin {
+  return NotificationPlugin()
 }

plugins/notification/src/commands.rs

@@ -2,30 +2,21 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
-use serde::Deserialize;
 use tauri::{command, AppHandle, Runtime, State};
 
-use crate::{Notification, PermissionState, Result};
-
-/// The options for the notification API.
-#[derive(Debug, Clone, Deserialize)]
-pub struct NotificationOptions {
-    /// The notification title.
-    pub title: String,
-    /// The notification body.
-    pub body: Option<String>,
-    /// The notification icon.
-    pub icon: Option<String>,
-}
+use crate::{Notification, NotificationData, PermissionState, Result};
 
 #[command]
 pub(crate) async fn is_permission_granted<R: Runtime>(
     _app: AppHandle<R>,
     notification: State<'_, Notification<R>>,
-) -> Result<bool> {
-    notification
-        .permission_state()
-        .map(|s| s == PermissionState::Granted)
+) -> Result<Option<bool>> {
+    let state = notification.permission_state()?;
+    match state {
+        PermissionState::Granted => Ok(Some(true)),
+        PermissionState::Denied => Ok(Some(false)),
+        PermissionState::Unknown => Ok(None),
+    }
 }
 
 #[command]
@@ -40,15 +31,9 @@ pub(crate) async fn request_permission<R: Runtime>(
 pub(crate) async fn notify<R: Runtime>(
     _app: AppHandle<R>,
     notification: State<'_, Notification<R>>,
-    options: NotificationOptions,
+    options: NotificationData,
 ) -> Result<()> {
-    let mut builder = notification.builder().title(options.title);
-    if let Some(body) = options.body {
-        builder = builder.body(body);
-    }
-    if let Some(icon) = options.icon {
-        builder = builder.icon(icon);
-    }
-
+    let mut builder = notification.builder();
+    builder.data = options;
     builder.show()
 }

plugins/notification/src/lib.rs

@@ -30,16 +30,6 @@ use desktop::Notification;
 #[cfg(mobile)]
 use mobile::Notification;
 
-#[derive(Debug, Default, Serialize)]
-struct NotificationData {
-    /// The notification title.
-    title: Option<String>,
-    /// The notification body.
-    body: Option<String>,
-    /// The notification icon.
-    icon: Option<String>,
-}
-
 /// The notification builder.
 #[derive(Debug)]
 pub struct NotificationBuilder<R: Runtime> {
@@ -47,7 +37,7 @@ pub struct NotificationBuilder<R: Runtime> {
     app: AppHandle<R>,
     #[cfg(mobile)]
     handle: PluginHandle<R>,
-    data: NotificationData,
+    pub(crate) data: NotificationData,
 }
 
 impl<R: Runtime> NotificationBuilder<R> {
@@ -67,6 +57,21 @@ impl<R: Runtime> NotificationBuilder<R> {
         }
     }
 
+    /// Sets the notification identifier.
+    pub fn id(mut self, id: i32) -> Self {
+        self.data.id = id;
+        self
+    }
+
+    /// Identifier of the {@link Channel} that deliveres this notification.
+    ///
+    /// If the channel does not exist, the notification won't fire.
+    /// Make sure the channel exists with {@link listChannels} and {@link createChannel}.
+    pub fn channel_id(mut self, id: impl Into<String>) -> Self {
+        self.data.channel_id.replace(id.into());
+        self
+    }
+
     /// Sets the notification title.
     pub fn title(mut self, title: impl Into<String>) -> Self {
         self.data.title.replace(title.into());
@@ -79,11 +84,119 @@ impl<R: Runtime> NotificationBuilder<R> {
         self
     }
 
-    /// Sets the notification icon.
+    /// Schedule this notification to fire on a later time or a fixed interval.
+    pub fn schedule(mut self, schedule: Schedule) -> Self {
+        self.data.schedule.replace(schedule);
+        self
+    }
+
+    /// Multiline text.
+    /// Changes the notification style to big text.
+    /// Cannot be used with `inboxLines`.
+    pub fn large_body(mut self, large_body: impl Into<String>) -> Self {
+        self.data.large_body.replace(large_body.into());
+        self
+    }
+
+    /// Detail text for the notification with `largeBody`, `inboxLines` or `groupSummary`.
+    pub fn summary(mut self, summary: impl Into<String>) -> Self {
+        self.data.summary.replace(summary.into());
+        self
+    }
+
+    /// Defines an action type for this notification.
+    pub fn action_type_id(mut self, action_type_id: impl Into<String>) -> Self {
+        self.data.action_type_id.replace(action_type_id.into());
+        self
+    }
+
+    /// Identifier used to group multiple notifications.
+    ///
+    /// https://developer.apple.com/documentation/usernotifications/unmutablenotificationcontent/1649872-threadidentifier
+    pub fn group(mut self, group: impl Into<String>) -> Self {
+        self.data.group.replace(group.into());
+        self
+    }
+
+    /// Instructs the system that this notification is the summary of a group on Android.
+    pub fn group_summary(mut self) -> Self {
+        self.data.group_summary = true;
+        self
+    }
+
+    /// The sound resource name. Only available on mobile.
+    pub fn sound(mut self, sound: impl Into<String>) -> Self {
+        self.data.sound.replace(sound.into());
+        self
+    }
+
+    /// Append an inbox line to the notification.
+    /// Changes the notification style to inbox.
+    /// Cannot be used with `largeBody`.
+    ///
+    /// Only supports up to 5 lines.
+    pub fn inbox_line(mut self, line: impl Into<String>) -> Self {
+        self.data.inbox_lines.push(line.into());
+        self
+    }
+
+    /// Notification icon.
+    ///
+    /// On Android the icon must be placed in the app's `res/drawable` folder.
     pub fn icon(mut self, icon: impl Into<String>) -> Self {
         self.data.icon.replace(icon.into());
         self
     }
+
+    /// Notification large icon (Android).
+    ///
+    /// The icon must be placed in the app's `res/drawable` folder.
+    pub fn large_icon(mut self, large_icon: impl Into<String>) -> Self {
+        self.data.large_icon.replace(large_icon.into());
+        self
+    }
+
+    /// Icon color on Android.
+    pub fn icon_color(mut self, icon_color: impl Into<String>) -> Self {
+        self.data.icon_color.replace(icon_color.into());
+        self
+    }
+
+    /// Append an attachment to the notification.
+    pub fn attachment(mut self, attachment: Attachment) -> Self {
+        self.data.attachments.push(attachment);
+        self
+    }
+
+    /// Adds an extra payload to store in the notification.
+    pub fn extra(mut self, key: impl Into<String>, value: impl Serialize) -> Self {
+        self.data
+            .extra
+            .insert(key.into(), serde_json::to_value(value).unwrap());
+        self
+    }
+
+    /// If true, the notification cannot be dismissed by the user on Android.
+    ///
+    /// An application service must manage the dismissal of the notification.
+    /// It is typically used to indicate a background task that is pending (e.g. a file download)
+    /// or the user is engaged with (e.g. playing music).
+    pub fn ongoing(mut self) -> Self {
+        self.data.ongoing = true;
+        self
+    }
+
+    /// Automatically cancel the notification when the user clicks on it.
+    pub fn auto_cancel(mut self) -> Self {
+        self.data.auto_cancel = true;
+        self
+    }
+
+    /// Changes the notification presentation to be silent on iOS (no badge, no sound, not listed).
+    pub fn silent(mut self) -> Self {
+        self.data.silent = true;
+        self
+    }
 }
 
 /// Extensions to [`tauri::App`], [`tauri::AppHandle`] and [`tauri::Window`] to access the notification APIs.

plugins/notification/src/mobile.rs

@@ -10,6 +10,8 @@ use tauri::{
 
 use crate::models::*;
 
+use std::collections::HashMap;
+
 #[cfg(target_os = "android")]
 const PLUGIN_IDENTIFIER: &str = "app.tauri.notification";
 
@@ -31,7 +33,8 @@ pub fn init<R: Runtime, C: DeserializeOwned>(
 impl<R: Runtime> crate::NotificationBuilder<R> {
     pub fn show(self) -> crate::Result<()> {
         self.handle
-            .run_mobile_plugin("notify", self.data)
+            .run_mobile_plugin::<ShowResponse>("show", self.data)
+            .map(|_| ())
             .map_err(Into::into)
     }
 }
@@ -46,17 +49,121 @@ impl<R: Runtime> Notification<R> {
 
     pub fn request_permission(&self) -> crate::Result<PermissionState> {
         self.0
-            .run_mobile_plugin::<PermissionResponse>("requestPermission", ())
+            .run_mobile_plugin::<PermissionResponse>("requestPermissions", ())
             .map(|r| r.permission_state)
             .map_err(Into::into)
     }
 
     pub fn permission_state(&self) -> crate::Result<PermissionState> {
         self.0
-            .run_mobile_plugin::<PermissionResponse>("permissionState", ())
+            .run_mobile_plugin::<PermissionResponse>("checkPermissions", ())
             .map(|r| r.permission_state)
             .map_err(Into::into)
     }
+
+    pub fn register_action_types(&self, types: Vec<ActionType>) -> crate::Result<()> {
+        let mut args = HashMap::new();
+        args.insert("types", types);
+        self.0
+            .run_mobile_plugin("registerActionTypes", args)
+            .map_err(Into::into)
+    }
+
+    pub fn remove_active(&self, notifications: Vec<i32>) -> crate::Result<()> {
+        let mut args = HashMap::new();
+        args.insert(
+            "notifications",
+            notifications
+                .into_iter()
+                .map(|id| {
+                    let mut notification = HashMap::new();
+                    notification.insert("id", id);
+                    notification
+                })
+                .collect::<Vec<HashMap<&str, i32>>>(),
+        );
+        self.0
+            .run_mobile_plugin("removeActive", args)
+            .map_err(Into::into)
+    }
+
+    pub fn active(&self) -> crate::Result<Vec<ActiveNotification>> {
+        self.0
+            .run_mobile_plugin::<ActiveResponse>("getActive", ())
+            .map(|r| r.notifications)
+            .map_err(Into::into)
+    }
+
+    pub fn remove_all_active(&self) -> crate::Result<()> {
+        self.0
+            .run_mobile_plugin("removeActive", ())
+            .map_err(Into::into)
+    }
+
+    pub fn pending(&self) -> crate::Result<Vec<PendingNotification>> {
+        self.0
+            .run_mobile_plugin::<PendingResponse>("getPending", ())
+            .map(|r| r.notifications)
+            .map_err(Into::into)
+    }
+
+    /// Cancel pending notifications.
+    pub fn cancel(&self, notifications: Vec<i32>) -> crate::Result<()> {
+        let mut args = HashMap::new();
+        args.insert("notifications", notifications);
+        self.0.run_mobile_plugin("cancel", args).map_err(Into::into)
+    }
+
+    /// Cancel all pending notifications.
+    pub fn cancel_all(&self) -> crate::Result<()> {
+        self.0.run_mobile_plugin("cancel", ()).map_err(Into::into)
+    }
+
+    #[cfg(target_os = "android")]
+    pub fn create_channel(&self, channel: Channel) -> crate::Result<()> {
+        self.0
+            .run_mobile_plugin("createChannel", channel)
+            .map_err(Into::into)
+    }
+
+    #[cfg(target_os = "android")]
+    pub fn delete_channel(&self, id: impl Into<String>) -> crate::Result<()> {
+        let mut args = HashMap::new();
+        args.insert("id", id.into());
+        self.0
+            .run_mobile_plugin("deleteChannel", args)
+            .map_err(Into::into)
+    }
+
+    #[cfg(target_os = "android")]
+    pub fn list_channels(&self) -> crate::Result<Vec<Channel>> {
+        self.0
+            .run_mobile_plugin::<ListChannelsResult>("listChannels", ())
+            .map(|r| r.channels)
+            .map_err(Into::into)
+    }
+}
+
+#[cfg(target_os = "android")]
+#[derive(Deserialize)]
+struct ListChannelsResult {
+    channels: Vec<Channel>,
+}
+
+#[derive(Deserialize)]
+struct PendingResponse {
+    notifications: Vec<PendingNotification>,
+}
+
+#[derive(Deserialize)]
+struct ActiveResponse {
+    notifications: Vec<ActiveNotification>,
+}
+
+#[derive(Deserialize)]
+struct ShowResponse {
+    #[allow(dead_code)]
+    id: i32,
 }
 
 #[derive(Deserialize)]

plugins/notification/src/models.rs

@@ -2,10 +2,201 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
-use std::fmt::Display;
+use std::{collections::HashMap, fmt::Display};
 
 use serde::{de::Error as DeError, Deserialize, Deserializer, Serialize, Serializer};
 
+use url::Url;
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Attachment {
+    id: String,
+    url: Url,
+}
+
+impl Attachment {
+    pub fn new(id: impl Into<String>, url: Url) -> Self {
+        Self { id: id.into(), url }
+    }
+}
+
+#[derive(Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ScheduleInterval {
+    pub year: Option<u8>,
+    pub month: Option<u8>,
+    pub day: Option<u8>,
+    pub weekday: Option<u8>,
+    pub hour: Option<u8>,
+    pub minute: Option<u8>,
+    pub second: Option<u8>,
+}
+
+#[derive(Debug)]
+pub enum ScheduleEvery {
+    Year,
+    Month,
+    TwoWeeks,
+    Week,
+    Day,
+    Hour,
+    Minute,
+    Second,
+}
+
+impl Display for ScheduleEvery {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                Self::Year => "Year",
+                Self::Month => "Month",
+                Self::TwoWeeks => "TwoWeeks",
+                Self::Week => "Week",
+                Self::Day => "Day",
+                Self::Hour => "Hour",
+                Self::Minute => "Minute",
+                Self::Second => "Second",
+            }
+        )
+    }
+}
+
+impl Serialize for ScheduleEvery {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(self.to_string().as_ref())
+    }
+}
+
+impl<'de> Deserialize<'de> for ScheduleEvery {
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        match s.to_lowercase().as_str() {
+            "year" => Ok(Self::Year),
+            "month" => Ok(Self::Month),
+            "twoweeks" => Ok(Self::TwoWeeks),
+            "week" => Ok(Self::Week),
+            "day" => Ok(Self::Day),
+            "hour" => Ok(Self::Hour),
+            "minute" => Ok(Self::Minute),
+            "second" => Ok(Self::Second),
+            _ => Err(DeError::custom(format!("unknown every kind '{s}'"))),
+        }
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(tag = "kind", content = "data")]
+pub enum Schedule {
+    At {
+        #[serde(
+            serialize_with = "iso8601::serialize",
+            deserialize_with = "time::serde::iso8601::deserialize"
+        )]
+        date: time::OffsetDateTime,
+        #[serde(default)]
+        repeating: bool,
+    },
+    Interval(ScheduleInterval),
+    Every {
+        interval: ScheduleEvery,
+    },
+}
+
+// custom ISO-8601 serialization that does not use 6 digits for years.
+mod iso8601 {
+    use serde::{ser::Error as _, Serialize, Serializer};
+    use time::{
+        format_description::well_known::iso8601::{Config, EncodedConfig},
+        format_description::well_known::Iso8601,
+        OffsetDateTime,
+    };
+
+    const SERDE_CONFIG: EncodedConfig = Config::DEFAULT.encode();
+
+    pub fn serialize<S: Serializer>(
+        datetime: &OffsetDateTime,
+        serializer: S,
+    ) -> Result<S::Ok, S::Error> {
+        datetime
+            .format(&Iso8601::<SERDE_CONFIG>)
+            .map_err(S::Error::custom)?
+            .serialize(serializer)
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct NotificationData {
+    #[serde(default = "default_id")]
+    pub(crate) id: i32,
+    pub(crate) channel_id: Option<String>,
+    pub(crate) title: Option<String>,
+    pub(crate) body: Option<String>,
+    pub(crate) schedule: Option<Schedule>,
+    pub(crate) large_body: Option<String>,
+    pub(crate) summary: Option<String>,
+    pub(crate) action_type_id: Option<String>,
+    pub(crate) group: Option<String>,
+    #[serde(default)]
+    pub(crate) group_summary: bool,
+    pub(crate) sound: Option<String>,
+    #[serde(default)]
+    pub(crate) inbox_lines: Vec<String>,
+    pub(crate) icon: Option<String>,
+    pub(crate) large_icon: Option<String>,
+    pub(crate) icon_color: Option<String>,
+    #[serde(default)]
+    pub(crate) attachments: Vec<Attachment>,
+    #[serde(default)]
+    pub(crate) extra: HashMap<String, serde_json::Value>,
+    #[serde(default)]
+    pub(crate) ongoing: bool,
+    #[serde(default)]
+    pub(crate) auto_cancel: bool,
+    #[serde(default)]
+    pub(crate) silent: bool,
+}
+
+fn default_id() -> i32 {
+    rand::random()
+}
+
+impl Default for NotificationData {
+    fn default() -> Self {
+        Self {
+            id: default_id(),
+            channel_id: None,
+            title: None,
+            body: None,
+            schedule: None,
+            large_body: None,
+            summary: None,
+            action_type_id: None,
+            group: None,
+            group_summary: false,
+            sound: None,
+            inbox_lines: Vec::new(),
+            icon: None,
+            large_icon: None,
+            icon_color: None,
+            attachments: Vec::new(),
+            extra: Default::default(),
+            ongoing: false,
+            auto_cancel: false,
+            silent: false,
+        }
+    }
+}
+
 /// Permission state.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum PermissionState {
@@ -13,6 +204,8 @@ pub enum PermissionState {
     Granted,
     /// Permission access has been denied.
     Denied,
+    /// Unknown state. Must request permission.
+    Unknown,
 }
 
 impl Display for PermissionState {
@@ -20,6 +213,7 @@ impl Display for PermissionState {
         match self {
             Self::Granted => write!(f, "granted"),
             Self::Denied => write!(f, "denied"),
+            Self::Unknown => write!(f, "Unknown"),
         }
     }
 }
@@ -42,7 +236,274 @@ impl<'de> Deserialize<'de> for PermissionState {
         match s.to_lowercase().as_str() {
             "granted" => Ok(Self::Granted),
             "denied" => Ok(Self::Denied),
+            "default" => Ok(Self::Unknown),
             _ => Err(DeError::custom(format!("unknown permission state '{s}'"))),
         }
     }
 }
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PendingNotification {
+    id: i32,
+    title: Option<String>,
+    body: Option<String>,
+    schedule: Schedule,
+}
+
+impl PendingNotification {
+    pub fn id(&self) -> i32 {
+        self.id
+    }
+
+    pub fn title(&self) -> Option<&str> {
+        self.title.as_deref()
+    }
+
+    pub fn body(&self) -> Option<&str> {
+        self.body.as_deref()
+    }
+
+    pub fn schedule(&self) -> &Schedule {
+        &self.schedule
+    }
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ActiveNotification {
+    id: i32,
+    tag: Option<String>,
+    title: Option<String>,
+    body: Option<String>,
+    group: Option<String>,
+    #[serde(default)]
+    group_summary: bool,
+    #[serde(default)]
+    data: HashMap<String, String>,
+    #[serde(default)]
+    extra: HashMap<String, serde_json::Value>,
+    #[serde(default)]
+    attachments: Vec<Attachment>,
+    action_type_id: Option<String>,
+    schedule: Option<Schedule>,
+    sound: Option<String>,
+}
+
+impl ActiveNotification {
+    pub fn id(&self) -> i32 {
+        self.id
+    }
+
+    pub fn tag(&self) -> Option<&str> {
+        self.tag.as_deref()
+    }
+
+    pub fn title(&self) -> Option<&str> {
+        self.title.as_deref()
+    }
+
+    pub fn body(&self) -> Option<&str> {
+        self.body.as_deref()
+    }
+
+    pub fn group(&self) -> Option<&str> {
+        self.group.as_deref()
+    }
+
+    pub fn group_summary(&self) -> bool {
+        self.group_summary
+    }
+
+    pub fn data(&self) -> &HashMap<String, String> {
+        &self.data
+    }
+
+    pub fn extra(&self) -> &HashMap<String, serde_json::Value> {
+        &self.extra
+    }
+
+    pub fn attachments(&self) -> &[Attachment] {
+        &self.attachments
+    }
+
+    pub fn action_type_id(&self) -> Option<&str> {
+        self.action_type_id.as_deref()
+    }
+
+    pub fn schedule(&self) -> Option<&Schedule> {
+        self.schedule.as_ref()
+    }
+
+    pub fn sound(&self) -> Option<&str> {
+        self.sound.as_deref()
+    }
+}
+
+#[derive(Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ActionType {
+    id: String,
+    actions: Vec<Action>,
+    hidden_previews_body_placeholder: Option<String>,
+    custom_dismiss_action: bool,
+    allow_in_car_play: bool,
+    hidden_previews_show_title: bool,
+    hidden_previews_show_subtitle: bool,
+}
+
+#[derive(Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Action {
+    id: String,
+    title: String,
+    requires_authentication: bool,
+    foreground: bool,
+    destructive: bool,
+    input: bool,
+    input_button_title: Option<String>,
+    input_placeholder: Option<String>,
+}
+
+#[cfg(target_os = "android")]
+pub use android::*;
+
+#[cfg(target_os = "android")]
+mod android {
+    use serde::{Deserialize, Serialize};
+    use serde_repr::{Deserialize_repr, Serialize_repr};
+
+    #[derive(Debug, Clone, Copy, Serialize_repr, Deserialize_repr)]
+    #[repr(u8)]
+    pub enum Importance {
+        None = 0,
+        Min = 1,
+        Low = 2,
+        Default = 3,
+        High = 4,
+    }
+
+    impl Default for Importance {
+        fn default() -> Self {
+            Self::Default
+        }
+    }
+
+    #[derive(Debug, Clone, Copy, Serialize_repr, Deserialize_repr)]
+    #[repr(i8)]
+    pub enum Visibility {
+        Secret = -1,
+        Private = 0,
+        Public = 1,
+    }
+
+    #[derive(Debug, Serialize, Deserialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct Channel {
+        id: String,
+        name: String,
+        description: Option<String>,
+        sound: Option<String>,
+        lights: bool,
+        light_color: Option<String>,
+        vibration: bool,
+        importance: Importance,
+        visibility: Option<Visibility>,
+    }
+
+    #[derive(Debug)]
+    pub struct ChannelBuilder(Channel);
+
+    impl Channel {
+        pub fn builder(id: impl Into<String>, name: impl Into<String>) -> ChannelBuilder {
+            ChannelBuilder(Self {
+                id: id.into(),
+                name: name.into(),
+                description: None,
+                sound: None,
+                lights: false,
+                light_color: None,
+                vibration: false,
+                importance: Default::default(),
+                visibility: None,
+            })
+        }
+
+        pub fn id(&self) -> &str {
+            &self.id
+        }
+
+        pub fn name(&self) -> &str {
+            &self.name
+        }
+
+        pub fn description(&self) -> Option<&str> {
+            self.description.as_deref()
+        }
+
+        pub fn sound(&self) -> Option<&str> {
+            self.sound.as_deref()
+        }
+
+        pub fn lights(&self) -> bool {
+            self.lights
+        }
+
+        pub fn light_color(&self) -> Option<&str> {
+            self.light_color.as_deref()
+        }
+
+        pub fn vibration(&self) -> bool {
+            self.vibration
+        }
+
+        pub fn importance(&self) -> Importance {
+            self.importance
+        }
+
+        pub fn visibility(&self) -> Option<Visibility> {
+            self.visibility
+        }
+    }
+
+    impl ChannelBuilder {
+        pub fn description(mut self, description: impl Into<String>) -> Self {
+            self.0.description.replace(description.into());
+            self
+        }
+
+        pub fn sound(mut self, sound: impl Into<String>) -> Self {
+            self.0.sound.replace(sound.into());
+            self
+        }
+
+        pub fn lights(mut self, lights: bool) -> Self {
+            self.0.lights = lights;
+            self
+        }
+
+        pub fn light_color(mut self, color: impl Into<String>) -> Self {
+            self.0.light_color.replace(color.into());
+            self
+        }
+
+        pub fn vibration(mut self, vibration: bool) -> Self {
+            self.0.vibration = vibration;
+            self
+        }
+
+        pub fn importance(mut self, importance: Importance) -> Self {
+            self.0.importance = importance;
+            self
+        }
+
+        pub fn visibility(mut self, visibility: Visibility) -> Self {
+            self.0.visibility.replace(visibility);
+            self
+        }
+
+        pub fn build(self) -> Channel {
+            self.0
+        }
+    }
+}