ui: reconnect call (#7711)

* Update Call.hs

* Update Internal.hs

* add reconnecting string

* Update WebRTC.kt

* desktop: show reconnecting state, keep call duration

* android keep connection time correct wiith adding reconnecting

* Update CallTypes.swift add reconnecting status on IOS

* Update WebRTC.swift add reconnecting

* add reconnecting and make sure call duration is correct

* Update call.ts

* core: regenerate call.js from call.ts

* Update Call.hs revert call status change

minimization

* Update Internal.hs rever to minimize changes

* Update CallTypes.swift minimize changes

* Update WebRTC.kt minimize changes

* Update CallView.desktop.kt desktop shows reconnecting without sending to core

* Update CallView.android.kt show reconnecting without sending it to the core

* Update ActiveCallView.swift show reconnecting to ui without sending to core

* Update CallView.desktop.kt add reconnecting sound on reconnect

* Update CallView.android.kt add reconnecting sound

* Update ActiveCallView.swift play reconnecting sound when reconnecting

* Update RecAndPlay.desktop.kt

* rebuild

* refactor

* build

* android, desktop: restart ICE to reconnect calls

* ios: restart ICE to reconnect calls

* webrtc: add call reconnection e2e tests

* android, desktop: fix lost call commands

---------

Co-authored-by: GuavaGoat <320862384+GuavaGoat@users.noreply.github.com>
Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>
Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>

apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/platform/RecAndPlay.desktop.kt

@@ -313,7 +313,9 @@ actual object CallSoundsPlayer: CallSoundsPlayerInterface {
   override fun startConnectingCallSound(scope: CoroutineScope) {
     // Taken from https://github.com/TelegramOrg/Telegram-Android
     // https://github.com/TelegramOrg/Telegram-Android/blob/master/LICENSE
-    start("/media/connecting_call.mp3", 3000, scope)
+    // the delay is the length of the track exactly, so it repeats with no delay, which already happens on ios and android
+    // Android (isLooping) and iOS (which sleeps for the track duration)
+    start("/media/connecting_call.mp3", 3536, scope)
   }
 
   override fun startInCallSound(scope: CoroutineScope) {

apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/views/call/CallView.desktop.kt

@@ -8,6 +8,7 @@ import chat.simplex.common.platform.*
 import chat.simplex.common.views.helpers.*
 import chat.simplex.res.*
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.flow.*
 import kotlinx.datetime.Clock
 import kotlinx.serialization.encodeToString
@@ -55,13 +56,24 @@ actual fun ActiveCallView() {
           CallSoundsPlayer.stop()
         }
         is WCallResponse.Ice -> withBGApi {
-          chatModel.controller.apiSendCallExtraInfo(callRh, call.contact, r.iceCandidates)
+          chatModel.controller.apiSendCallExtraInfo(callRh, call.contact, r.session, r.iceCandidates)
         }
         is WCallResponse.Connection ->
-          try {
+          // the call is restored and NOT sent to the core
+          // Makes sure the core DOES NOT record the duration wrong if a reconnect happens
+          if (r.state.connectionState == "reconnecting") {
+            if (call.callState != CallState.Reconnecting) {
+              CallSoundsPlayer.startConnectingCallSound(scope)
+            }
+            chatModel.activeCall.value = call.copy(callState = CallState.Reconnecting)
+          } else try {
             val callStatus = json.decodeFromString<WebRTCCallStatus>("\"${r.state.connectionState}\"")
             if (callStatus == WebRTCCallStatus.Connected) {
-              chatModel.activeCall.value = call.copy(callState = CallState.Connected, connectedAt = Clock.System.now())
+              if (call.callState == CallState.Reconnecting) {
+                CallSoundsPlayer.stop()
+              }
+              // connectedAt is only set ONCE, this way call duration is NOT reset when the call is restored from reconnecting
+              chatModel.activeCall.value = call.copy(callState = CallState.Connected, connectedAt = call.connectedAt ?: Clock.System.now())
             }
             withBGApi { chatModel.controller.apiCallStatus(callRh, call.contact, callStatus) }
           } catch (e: Throwable) {
@@ -194,21 +206,20 @@ fun WebRTCController(callCommand: SnapshotStateList<WCallCommand>, onResponse: (
     }
   }
   LaunchedEffect(Unit) {
-    snapshotFlow { callCommand.firstOrNull() }
-      .distinctUntilChanged()
-      .filterNotNull()
-      .collect {
-        while (connections.isEmpty()) {
-          delay(100)
-        }
-        while (callCommand.isNotEmpty()) {
-          val cmd = callCommand.removeFirstOrNull()
-          Log.d(TAG, "WebRTCController LaunchedEffect executing ${cmd?.javaClass?.simpleName}")
-          if (cmd != null) {
-            processCommand(cmd)
-          }
+    while (isActive) {
+      // waiting for the first command would miss a command equal to the previous one
+      snapshotFlow { callCommand.isNotEmpty() }.first { it }
+      while (connections.isEmpty()) {
+        delay(100)
+      }
+      while (callCommand.isNotEmpty()) {
+        val cmd = callCommand.removeFirstOrNull()
+        Log.d(TAG, "WebRTCController LaunchedEffect executing ${cmd?.javaClass?.simpleName}")
+        if (cmd != null) {
+          processCommand(cmd)
         }
       }
+    }
   }
 }