Fix ringing calls not stopping when the other user cancels the call (#4613)

* Fix ringing calls not being automatically canceled

This will keep the sync active while the user is screening an incoming call, allowing receiving a call cancellation event, which will terminate the incoming call ringing early.

* Add extra logs to help debugging ringing call issues.

services/appnavstate/api/src/main/kotlin/io/element/android/services/appnavstate/api/AppForegroundStateService.kt

@@ -18,6 +18,11 @@ interface AppForegroundStateService {
      */
     val isInForeground: StateFlow<Boolean>
 
+    /**
+     * Updates to whether the app is active because an incoming ringing call is happening will be emitted here.
+     */
+    val hasRingingCall: StateFlow<Boolean>
+
     /**
      * Updates to whether the app is in an active call or not will be emitted here.
      */
@@ -38,6 +43,11 @@ interface AppForegroundStateService {
      */
     fun updateIsInCallState(isInCall: Boolean)
 
+    /**
+     * Update the 'has ringing call' state.
+     */
+    fun updateHasRingingCall(hasRingingCall: Boolean)
+
     /**
      * Update the active state for the syncing notification event flow.
      */

services/appnavstate/impl/src/main/kotlin/io/element/android/services/appnavstate/impl/DefaultAppForegroundStateService.kt

@@ -17,6 +17,7 @@ class DefaultAppForegroundStateService : AppForegroundStateService {
     override val isInForeground = MutableStateFlow(false)
     override val isInCall = MutableStateFlow(false)
     override val isSyncingNotificationEvent = MutableStateFlow(false)
+    override val hasRingingCall = MutableStateFlow(false)
 
     private val appLifecycle: Lifecycle by lazy { ProcessLifecycleOwner.get().lifecycle }
 
@@ -28,6 +29,10 @@ class DefaultAppForegroundStateService : AppForegroundStateService {
         this.isInCall.value = isInCall
     }
 
+    override fun updateHasRingingCall(hasRingingCall: Boolean) {
+        this.hasRingingCall.value = hasRingingCall
+    }
+
     override fun updateIsSyncingNotificationEvent(isSyncingNotificationEvent: Boolean) {
         this.isSyncingNotificationEvent.value = isSyncingNotificationEvent
     }

services/appnavstate/test/src/main/kotlin/io/element/android/services/appnavstate/test/FakeAppForegroundStateService.kt

@@ -13,11 +13,13 @@ import kotlinx.coroutines.flow.MutableStateFlow
 class FakeAppForegroundStateService(
     initialForegroundValue: Boolean = true,
     initialIsInCallValue: Boolean = false,
-    initialIsSyncingNotificationEventValue: Boolean = false
+    initialIsSyncingNotificationEventValue: Boolean = false,
+    initialHasRingingCall: Boolean = false,
 ) : AppForegroundStateService {
     override val isInForeground = MutableStateFlow(initialForegroundValue)
     override val isInCall = MutableStateFlow(initialIsInCallValue)
     override val isSyncingNotificationEvent = MutableStateFlow(initialIsSyncingNotificationEventValue)
+    override val hasRingingCall = MutableStateFlow(initialHasRingingCall)
 
     override fun startObservingForeground() {
         // No-op
@@ -34,4 +36,8 @@ class FakeAppForegroundStateService(
     override fun updateIsSyncingNotificationEvent(isSyncingNotificationEvent: Boolean) {
         this.isSyncingNotificationEvent.value = isSyncingNotificationEvent
     }
+
+    override fun updateHasRingingCall(hasRingingCall: Boolean) {
+        this.hasRingingCall.value = hasRingingCall
+    }
 }