Send influenced session outcome

* Create separate outcome-related method `sendSessionEndOutcomeEvent`
* We were also sending session_time in ms, but it should be seconds.

Author: nan-li

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/session/internal/outcomes/IOutcomeEventsController.kt

@@ -4,6 +4,11 @@ package com.onesignal.session.internal.outcomes
  * The gateway to outcomes logic.
  */
 interface IOutcomeEventsController {
+    /**
+     * Send a session ending outcome event to the backend.
+     */
+    suspend fun sendSessionEndOutcomeEvent(duration: Long): IOutcomeEvent?
+
     /**
      * Send a unique outcome event to the backend.
      */

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/session/internal/outcomes/impl/OutcomeEventsController.kt

@@ -81,6 +81,18 @@ Outcome event was cached and will be reattempted on app cold start""",
         }
     }
 
+    override suspend fun sendSessionEndOutcomeEvent(duration: Long): OutcomeEvent? {
+        val influences: List<Influence> = _influenceManager.influences
+
+        // only send the outcome if there are any influences associated with the session
+        for (influence in influences) {
+            if (influence.ids != null) {
+                return sendAndCreateOutcomeEvent("os__session_duration", 0f, duration, influences)
+            }
+        }
+        return null
+    }
+
     override suspend fun sendUniqueOutcomeEvent(name: String): OutcomeEvent? {
         val sessionResult: List<Influence> = _influenceManager.influences
         return sendUniqueOutcomeEvent(name, sessionResult)

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/session/internal/session/impl/SessionListener.kt

@@ -47,10 +47,11 @@ internal class SessionListener(
     }
 
     override fun onSessionEnded(duration: Long) {
-        _operationRepo.enqueue(TrackSessionEndOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId, duration))
+        val durationInSeconds = duration / 1000
+        _operationRepo.enqueue(TrackSessionEndOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId, durationInSeconds))
 
         suspendifyOnThread {
-            _outcomeEventsController.sendOutcomeEvent("os__session_duration")
+            _outcomeEventsController.sendSessionEndOutcomeEvent(durationInSeconds)
         }
     }
 }