Show error screens in group calls

Element Call now sends a 'close' widget action when the widget is ready to close. Usually this will be sent immediately after the 'hangup' action, but it could be sent later if the widget wants to present an error screen before closing. So by listening to the 'close' action rather than the 'hangup' action, we get to see these error screens.

Author: robintown

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/data/WidgetMessage.kt

@@ -33,6 +33,9 @@ data class WidgetMessage(
         @SerialName("im.vector.hangup")
         HangUp,
 
+        @SerialName("io.element.close")
+        Close,
+
         @SerialName("send_event")
         SendEvent,
     }

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/ui/CallScreenPresenter.kt

@@ -135,7 +135,7 @@ class CallScreenPresenter @AssistedInject constructor(
 
                         val parsedMessage = parseMessage(it)
                         if (parsedMessage?.direction == WidgetMessage.Direction.FromWidget) {
-                            if (parsedMessage.action == WidgetMessage.Action.HangUp) {
+                            if (parsedMessage.action == WidgetMessage.Action.Close) {
                                 close(callWidgetDriver.value, navigator)
                             } else if (parsedMessage.action == WidgetMessage.Action.SendEvent) {
                                 // This event is received when a member joins the call, the first one will be the current one

features/call/impl/src/test/kotlin/io/element/android/features/call/ui/CallScreenPresenterTest.kt

@@ -174,7 +174,7 @@ class CallScreenPresenterTest {
 
     @OptIn(ExperimentalCoroutinesApi::class)
     @Test
-    fun `present - a received hang up message closes the screen and stops the widget driver`() = runTest(UnconfinedTestDispatcher()) {
+    fun `present - a received close message closes the screen and stops the widget driver`() = runTest(UnconfinedTestDispatcher()) {
         val navigator = FakeCallScreenNavigator()
         val widgetDriver = FakeMatrixWidgetDriver()
         val presenter = createCallScreenPresenter(
@@ -191,7 +191,7 @@ class CallScreenPresenterTest {
             val initialState = awaitItem()
             initialState.eventSink(CallScreenEvents.SetupMessageChannels(messageInterceptor))
 
-            messageInterceptor.givenInterceptedMessage("""{"action":"im.vector.hangup","api":"fromWidget","widgetId":"1","requestId":"1"}""")
+            messageInterceptor.givenInterceptedMessage("""{"action":"io.element.close","api":"fromWidget","widgetId":"1","requestId":"1"}""")
 
             // Let background coroutines run
             runCurrent()