core: faster tracking of active subscriptions; ui: only track in foreground (#4446)

* core: faster tracking of active subscriptions

* combine db transaction

* optimizations of queries from UI

* ios: track when active

* ios: disable log

---------

Co-authored-by: Avently <7953703+avently@users.noreply.github.com>
Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

apps/multiplatform/common/src/androidMain/kotlin/chat/simplex/common/platform/AppCommon.android.kt

@@ -6,8 +6,6 @@ import android.net.LocalServerSocket
 import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.fragment.app.FragmentActivity
-import chat.simplex.common.*
-import chat.simplex.common.platform.*
 import java.io.*
 import java.lang.ref.WeakReference
 import java.util.*
@@ -24,6 +22,8 @@ var isAppOnForeground: Boolean = false
 @Suppress("ConstantLocale")
 val defaultLocale: Locale = Locale.getDefault()
 
+actual fun isAppVisibleAndFocused(): Boolean = isAppOnForeground
+
 @SuppressLint("StaticFieldLeak")
 lateinit var androidAppContext: Context
 var mainActivity: WeakReference<FragmentActivity> = WeakReference(null)

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/platform/AppCommon.kt

@@ -3,7 +3,6 @@ package chat.simplex.common.platform
 import chat.simplex.common.BuildConfigCommon
 import chat.simplex.common.model.*
 import chat.simplex.common.ui.theme.DefaultTheme
-import java.io.File
 import java.util.*
 
 enum class AppPlatform {
@@ -20,6 +19,8 @@ expect val appPlatform: AppPlatform
 
 expect val deviceName: String
 
+expect fun isAppVisibleAndFocused(): Boolean
+
 val appVersionInfo: Pair<String, Int?> = if (appPlatform == AppPlatform.ANDROID)
   BuildConfigCommon.ANDROID_VERSION_NAME to BuildConfigCommon.ANDROID_VERSION_CODE
 else

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chatlist/ChatListView.kt

@@ -266,44 +266,29 @@ private fun ChatListToolbar(drawerState: DrawerState, userPickerState: MutableSt
 fun SubscriptionStatusIndicator(serversSummary: MutableState<PresentedServersSummary?>, click: (() -> Unit)) {
   var subs by remember { mutableStateOf(SMPServerSubs.newSMPServerSubs) }
   var sess by remember { mutableStateOf(ServerSessions.newServerSessions) }
-  var timer: Job? by remember { mutableStateOf(null) }
-
-  val fetchInterval: Duration = 1.seconds
-
   val scope = rememberCoroutineScope()
 
-  fun setServersSummary() {
-    withBGApi {
-      serversSummary.value = chatModel.controller.getAgentServersSummary(chatModel.remoteHostId())
+  suspend fun setServersSummary() {
+    serversSummary.value = chatModel.controller.getAgentServersSummary(chatModel.remoteHostId())
 
-      serversSummary.value?.let {
-        subs = it.allUsersSMP.smpTotals.subs
-        sess = it.allUsersSMP.smpTotals.sessions
-      }
+    serversSummary.value?.let {
+      subs = it.allUsersSMP.smpTotals.subs
+      sess = it.allUsersSMP.smpTotals.sessions
     }
   }
 
   LaunchedEffect(Unit) {
     setServersSummary()
-    timer = timer ?: scope.launch {
-      while (true) {
-        delay(fetchInterval.inWholeMilliseconds)
-        setServersSummary()
+    scope.launch {
+      while (isActive) {
+        delay(1.seconds)
+        if ((appPlatform.isDesktop || chatModel.chatId.value == null) && !ModalManager.start.hasModalsOpen() && !ModalManager.fullscreen.hasModalsOpen() && isAppVisibleAndFocused()) {
+          setServersSummary()
+        }
       }
     }
   }
 
-  fun stopTimer() {
-    timer?.cancel()
-    timer = null
-  }
-
-  DisposableEffect(Unit) {
-    onDispose {
-      stopTimer()
-    }
-  }
-
   SimpleButtonFrame(click = click) {
     SubscriptionStatusIndicatorView(subs = subs, sess = sess)
   }

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

@@ -1,6 +1,7 @@
 package chat.simplex.common.platform
 
 import chat.simplex.common.model.*
+import chat.simplex.common.simplexWindowState
 import chat.simplex.common.views.call.RcvCallInvitation
 import chat.simplex.common.views.helpers.*
 import java.util.*
@@ -10,6 +11,8 @@ actual val appPlatform = AppPlatform.DESKTOP
 
 actual val deviceName = generalGetString(MR.strings.desktop_device)
 
+actual fun isAppVisibleAndFocused() = simplexWindowState.windowFocused.value
+
 @Suppress("ConstantLocale")
 val defaultLocale: Locale = Locale.getDefault()