add debounce for onCapabilitiesChanged

Signed-off-by: alperozturk96 <alper_ozturk@proton.me>

Author: alperozturk96

app/src/main/java/com/nextcloud/client/network/ConnectivityServiceImpl.kt

@@ -11,6 +11,7 @@ import android.net.ConnectivityManager
 import android.net.Network
 import android.net.NetworkCapabilities
 import android.os.Build
+import android.os.SystemClock
 import com.nextcloud.client.account.UserAccountManager
 import com.nextcloud.operations.GetMethod
 import com.owncloud.android.lib.common.utils.Log_OC
@@ -40,7 +41,6 @@ class ConnectivityServiceImpl(
         private const val TAG = "ConnectivityServiceImpl"
         private const val CONNECTIVITY_CHECK_ROUTE = "/index.php/204"
 
-        private var lastCapabilityCheckMs = 0L
         private val CAPABILITY_CHANGE_DEBOUNCE = 15.seconds
     }
 
@@ -50,6 +50,7 @@ class ConnectivityServiceImpl(
     private var notifyJob: Job? = null
     private val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
     private val listeners = mutableSetOf<NetworkChangeListener>()
+    private var lastCapabilityCheckMs: Long? = null
 
     @Volatile
     private var currentConnectivity: Connectivity = Connectivity.DISCONNECTED
@@ -64,12 +65,12 @@ class ConnectivityServiceImpl(
         }
 
         override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) {
-            val now = System.currentTimeMillis()
-            if (now - lastCapabilityCheckMs >= CAPABILITY_CHANGE_DEBOUNCE.inWholeMilliseconds) {
-                Log_OC.d(TAG, "resolving network capabilities to compare")
-                lastCapabilityCheckMs = now
-                updateConnectivity()
+            if (!shouldHandleCapabilityChange()) {
+                return
             }
+
+            Log_OC.d(TAG, "resolving network capabilities to compare")
+            updateConnectivity()
         }
     }
     // endregion
@@ -203,6 +204,17 @@ class ConnectivityServiceImpl(
     // endregion
 
     // region private methods
+    private fun shouldHandleCapabilityChange(): Boolean {
+        val now = SystemClock.elapsedRealtime()
+        val last = lastCapabilityCheckMs
+        if (last != null && now - last < CAPABILITY_CHANGE_DEBOUNCE.inWholeMilliseconds) {
+            return false
+        }
+
+        lastCapabilityCheckMs = now
+        return true
+    }
+
     private fun notifyListeners() {
         if (listeners.isEmpty()) {
             return