Sort provider by index

libraries/pushproviders/api/src/main/kotlin/io/element/android/libraries/push/providers/api/PushProvider.kt

@@ -22,6 +22,10 @@ import io.element.android.libraries.matrix.api.MatrixClient
  * This is the main API for this module
  */
 interface PushProvider {
+    /**
+     * Allow to sort provider, from lower index to higher index
+     */
+    val index: Int
     fun getDistributorNames(): List<String>
     suspend fun registerWith(matrixClient: MatrixClient, distributorName: String)
 }

libraries/pushproviders/firebase/src/main/kotlin/io/element/android/libraries/push/providers/firebase/FirebasePushProvider.kt

@@ -29,6 +29,7 @@ class FirebasePushProvider @Inject constructor(
     private val googleFcmHelper: GoogleFcmHelper,
     private val pusherSubscriber: PusherSubscriber,
 ) : PushProvider {
+    override val index = 0
 
     override fun getDistributorNames(): List<String> {
         // Must return an non-empty list for now

libraries/pushproviders/unifiedpush/src/main/kotlin/io/element/android/libraries/push/providers/unifiedpush/UnifiedPushProvider.kt

@@ -20,7 +20,9 @@ import io.element.android.libraries.matrix.api.MatrixClient
 import io.element.android.libraries.push.providers.api.PushProvider
 import javax.inject.Inject
 
-class UnifiedPushProvider @Inject constructor(): PushProvider {
+class UnifiedPushProvider @Inject constructor() : PushProvider {
+    override val index = 1
+
     override fun getDistributorNames(): List<String> {
         TODO("Not yet implemented")
     }