Add push notification extensions (#4005)

* add wav

* add sound to config

* add extension to `updateExtensions.sh`

* add ios source files

* add a build extension

* add a new module

* use correct type on ios

* update the build plugin

* add android handler

* create a patch for expo-notifications

* basic android implementation

* add entitlements for notifications extension

* add some generic logic for ios

* add age check logic

* add extension to app config

* remove dash

* move directory

* rename again

* update privacy manifest

* add prefs storage ios

* better types

* create interface for setting and getting prefs

* add notifications prefs for android

* add functions to module

* add types to js

* add prefs context

* add web stub

* wrap the app

* fix types

* more preferences for ios

* add a test toggle

* swap vars

* update patch

* fix patch error

* fix typo

* sigh

* sigh

* get stored prefs on launch

* anotehr type

* simplify

* about finished

* comment

* adjust plugin

* use supported file types

* update NSE

* futureproof ios

* futureproof android

* update sound file name

* handle initialization

* more cleanup

* update js types

* strict js types

* set the notification channel

* rm

* add silent channel

* add mute logic

* update patch

* podfile

* adjust channels

* fix android channel

* update readme

* oreo or higher

* nit

* don't use getValue

* nit

1 files changed, 93 insertions, 0 deletions

diff --git a/modules/expo-background-notification-handler/android/build.gradle b/modules/expo-background-notification-handler/android/build.gradle
new file mode 100644
index 000000000..e18eee934
--- /dev/null
+++ b/modules/expo-background-notification-handler/android/build.gradle
@@ -0,0 +1,93 @@
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'maven-publish'
+
+group = 'expo.modules.backgroundnotificationhandler'
+version = '0.5.0'
+
+buildscript {
+  def expoModulesCorePlugin = new File(project(":expo-modules-core").projectDir.absolutePath, "ExpoModulesCorePlugin.gradle")
+  if (expoModulesCorePlugin.exists()) {
+    apply from: expoModulesCorePlugin
+    applyKotlinExpoModulesCorePlugin()
+  }
+
+  // Simple helper that allows the root project to override versions declared by this library.
+  ext.safeExtGet = { prop, fallback ->
+    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
+  }
+
+  // Ensures backward compatibility
+  ext.getKotlinVersion = {
+    if (ext.has("kotlinVersion")) {
+      ext.kotlinVersion()
+    } else {
+      ext.safeExtGet("kotlinVersion", "1.8.10")
+    }
+  }
+
+  repositories {
+    mavenCentral()
+  }
+
+  dependencies {
+    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${getKotlinVersion()}")
+  }
+}
+
+afterEvaluate {
+  publishing {
+    publications {
+      release(MavenPublication) {
+        from components.release
+      }
+    }
+    repositories {
+      maven {
+        url = mavenLocal().url
+      }
+    }
+  }
+}
+
+android {
+  compileSdkVersion safeExtGet("compileSdkVersion", 33)
+
+  def agpVersion = com.android.Version.ANDROID_GRADLE_PLUGIN_VERSION
+  if (agpVersion.tokenize('.')[0].toInteger() < 8) {
+    compileOptions {
+      sourceCompatibility JavaVersion.VERSION_11
+      targetCompatibility JavaVersion.VERSION_11
+    }
+
+    kotlinOptions {
+      jvmTarget = JavaVersion.VERSION_11.majorVersion
+    }
+  }
+
+  namespace "expo.modules.backgroundnotificationhandler"
+  defaultConfig {
+    minSdkVersion safeExtGet("minSdkVersion", 21)
+    targetSdkVersion safeExtGet("targetSdkVersion", 34)
+    versionCode 1
+    versionName "0.5.0"
+  }
+  lintOptions {
+    abortOnError false
+  }
+  publishing {
+    singleVariant("release") {
+      withSourcesJar()
+    }
+  }
+}
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  implementation project(':expo-modules-core')
+  implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${getKotlinVersion()}"
+  implementation 'com.google.firebase:firebase-messaging-ktx:24.0.0'
+}