add no hosts dialog, optimize imports

app/src/main/java/com/cherret/zaprett/ui/screen/StrategySelectionScreen.kt

@@ -37,6 +37,7 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -45,7 +46,6 @@ import androidx.lifecycle.viewModelScope
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.cherret.zaprett.R
-import com.cherret.zaprett.byedpi.ByeDpiVpnService
 import com.cherret.zaprett.ui.component.StrategySelectionItem
 import com.cherret.zaprett.ui.viewmodel.StrategySelectionViewModel
 import kotlinx.coroutines.launch
@@ -122,6 +122,7 @@ fun StrategySelectionScreen(navController: NavController, vpnLauncher: ActivityR
                         horizontalArrangement = Arrangement.Center
                     )
                     {
+                        NoHostsCard(viewModel.noHostsCard)
                         FilledTonalButton(
                             onClick = {
                                 viewModel.viewModelScope.launch {
@@ -175,3 +176,21 @@ fun InfoAlert(onDismiss: () -> Unit) {
     )
 }
 
+@Composable
+private fun NoHostsCard(noHostsCard: MutableState<Boolean>) {
+    if (noHostsCard.value) {
+        AlertDialog(
+            title = { Text(text = stringResource(R.string.selection_no_hosts_title)) },
+            text = { Text(text = stringResource(R.string.selection_no_hosts_message)) },
+            onDismissRequest = {
+                noHostsCard.value = false
+            },
+            confirmButton = {
+                TextButton(onClick = { noHostsCard.value = false }) {
+                    Text(stringResource(R.string.btn_continue))
+                }
+            }
+        )
+    }
+}
+

app/src/main/java/com/cherret/zaprett/ui/viewmodel/StrategySelectionViewModel.kt

@@ -5,6 +5,7 @@ import android.content.Context.MODE_PRIVATE
 import android.content.Intent
 import android.util.Log
 import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.AndroidViewModel
 import com.cherret.zaprett.R
@@ -14,6 +15,7 @@ import com.cherret.zaprett.data.StrategyCheckResult
 import com.cherret.zaprett.utils.disableStrategy
 import com.cherret.zaprett.utils.enableStrategy
 import com.cherret.zaprett.utils.getActiveLists
+import com.cherret.zaprett.utils.getActiveStrategy
 import com.cherret.zaprett.utils.getAllStrategies
 import com.cherret.zaprett.utils.getStatus
 import com.cherret.zaprett.utils.startService
@@ -41,11 +43,13 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
 
     private val _requestVpnPermission = MutableStateFlow(false)
     val requestVpnPermission = _requestVpnPermission.asStateFlow()
-
     val strategyStates = mutableStateListOf<StrategyCheckResult>()
+    var noHostsCard = mutableStateOf(false)
+        private set
 
     init {
         loadStrategies()
+        checkHosts()
     }
 
     fun loadStrategies() {
@@ -165,6 +169,11 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
         strategyStates.clear()
         strategyStates.addAll(sorted)
     }
+
+    fun checkHosts() {
+        if (getActiveLists(prefs).isEmpty()) noHostsCard.value = true
+        Log.d("getActiveLists.isEmpty", getActiveLists(prefs).isEmpty().toString())
+    }
     fun startVpn() {
         ContextCompat.startForegroundService(context, Intent(context, ByeDpiVpnService::class.java).apply { action = "START_VPN" })
     }

app/src/main/res/values-ru/strings.xml

@@ -114,4 +114,6 @@
     <string name="hint_enter_probe_timeout">Введите таймаут пробы</string>
     <string name="strategy_selection_info_title">Информация</string>
     <string name="strategy_selection_info_msg">"В этом разделе настроек приложения представлен перебор стратегий\n Подбор проходит среди скачанных стратегий, поэтому заранее скачайте из репозитория или добавьте из файловой системы интересующие вас стратегии для сравнения. \n Перед началом так же выберете один или несколько листов доменов на вкладке \"Листы\", затем нажмите на \"Начать подбор\". Не используйте для перебора списки с большим количеством доменов."</string>
+    <string name="selection_no_hosts_title">Нет активных листов</string>
+    <string name="selection_no_hosts_message">Не обнаружено активных списков хостов, включите один или несколько, иначе подбор не сработает</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -119,4 +119,6 @@
     <string name="hint_enter_probe_timeout">Enter probe timeout</string>
     <string name="strategy_selection_info_title">Tip</string>
     <string name="strategy_selection_info_msg">This section of the application settings allows you to iterate through strategies.\n The selection is based on downloaded strategies, so download the strategies you\'re interested in from the repository or add them from the file system for comparison.\n Before starting, select one or more domain lists in the \"Lists\" tab, then click \"Start selection\". Avoid using lists with a large number of domains.</string>
+    <string name="selection_no_hosts_title">No active hosts</string>
+    <string name="selection_no_hosts_message">No active host lists found, please enable one or more, otherwise the selection will not work</string>
 </resources>