Properly cancel missed mobile calls notification when call history is entered

app/src/main/kotlin/com/tutpro/baresip/CallsScreen.kt

@@ -1,7 +1,9 @@
 package com.tutpro.baresip
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.content.Intent
+import android.telecom.TelecomManager
 import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
@@ -98,7 +100,11 @@ private fun CallsScreen(navController: NavController, viewModel: ViewModel, aor:
     var refreshTrigger by remember { mutableIntStateOf(0) }
     val lifecycleOwner = LocalLifecycleOwner.current
 
-    LaunchedEffect(aor, refreshTrigger) {
+    val ctx = LocalContext.current
+
+    LaunchedEffect(ua, refreshTrigger) {
+        if (ua.account.isMobile)
+            clearSystemMissedCalls(ctx)
         callHistory.value = loadCallHistory(aor)
         isHistoryLoaded = true
     }
@@ -114,8 +120,6 @@ private fun CallsScreen(navController: NavController, viewModel: ViewModel, aor:
         }
     }
 
-    val ctx = LocalContext.current
-
     BackHandler(enabled = true) {
         val serviceIntent = Intent(ctx, BaresipService::class.java)
         serviceIntent.action = "Clear Missed"
@@ -594,3 +598,16 @@ fun callTint(direction: Int): Int {
         else -> R.color.colorTrafficYellow
     }
 }
+
+@SuppressLint("MissingPermission")
+private fun clearSystemMissedCalls(ctx: Context) {
+    val telecom = ctx.getSystemService(TelecomManager::class.java)
+    try {
+        telecom.cancelMissedCallsNotification()
+        Log.d(TAG, "cancelMissedCallsNotification() succeeded")
+    } catch (e: SecurityException) {
+        Log.w(TAG, "Cannot clear missed call notification: $e")
+    } catch (e: Exception) {
+        Log.e(TAG, "Unexpected failure clearing missed call notification", e)
+    }
+}