add module error handling (and showing) in HostsScreen.kt, IpsetsScreen.kt, StrategyScreen.kt, StrategySelectionScreen.kt

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

@@ -1,7 +1,11 @@
 package com.cherret.zaprett.ui.screen
 
+import android.content.ClipData
+import android.content.ClipboardManager
 import android.content.Context
 import android.content.SharedPreferences
+import android.os.Build
+import android.widget.Toast
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
@@ -79,11 +83,43 @@ fun HostsScreen(navController: NavController, viewModel: HostsViewModel = viewMo
             if (getHostListMode(prefs) == "whitelist") viewModel.copySelectedFile(context, "/lists/include", it)
             else viewModel.copySelectedFile(context, "/lists/exclude", it) }
     }
+    val error by viewModel.errorFlow.collectAsState()
 
     LaunchedEffect(Unit) {
         viewModel.refresh()
     }
 
+    if (error.isNotEmpty()) {
+        AlertDialog(
+            onDismissRequest = {
+                viewModel.clearError()
+            },
+            title = { Text(stringResource(R.string.error_text)) },
+            text = {
+                Text(stringResource(R.string.error_unknown))
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    val clip: ClipData = ClipData.newPlainText("Error log", error)
+                    clipboard.setPrimaryClip(clip)
+                    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
+                        Toast.makeText(context, context.getString(R.string.log_copied), Toast.LENGTH_SHORT).show()
+                    }
+                }) {
+                    Text(stringResource(R.string.btn_copy_log))
+                }
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    viewModel.clearError()
+                }) {
+                    Text(stringResource(R.string.btn_continue))
+                }
+            }
+        )
+    }
+
     Scaffold(
         topBar = {
             TopAppBar(

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

@@ -1,7 +1,11 @@
 package com.cherret.zaprett.ui.screen
 
+import android.content.ClipData
+import android.content.ClipboardManager
 import android.content.Context
 import android.content.SharedPreferences
+import android.os.Build
+import android.widget.Toast
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
@@ -79,11 +83,43 @@ fun IpsetsScreen(navController: NavController, viewModel: IpsetViewModel = viewM
             if (getHostListMode(prefs) == "whitelist") viewModel.copySelectedFile(context, "/ipset/include", it)
             else viewModel.copySelectedFile(context, "/ipset/exclude", it) }
     }
+    val error by viewModel.errorFlow.collectAsState()
 
     LaunchedEffect(Unit) {
         viewModel.refresh()
     }
 
+    if (error.isNotEmpty()) {
+        AlertDialog(
+            onDismissRequest = {
+                viewModel.clearError()
+            },
+            title = { Text(stringResource(R.string.error_text)) },
+            text = {
+                Text(stringResource(R.string.error_unknown))
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    val clip: ClipData = ClipData.newPlainText("Error log", error)
+                    clipboard.setPrimaryClip(clip)
+                    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
+                        Toast.makeText(context, context.getString(R.string.log_copied), Toast.LENGTH_SHORT).show()
+                    }
+                }) {
+                    Text(stringResource(R.string.btn_copy_log))
+                }
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    viewModel.clearError()
+                }) {
+                    Text(stringResource(R.string.btn_continue))
+                }
+            }
+        )
+    }
+
     Scaffold(
         topBar = {
             TopAppBar(

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

@@ -1,6 +1,10 @@
 package com.cherret.zaprett.ui.screen
 
+import android.content.ClipData
+import android.content.ClipboardManager
 import android.content.Context
+import android.os.Build
+import android.widget.Toast
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
@@ -73,11 +77,43 @@ fun StrategyScreen(navController: NavController, viewModel: StrategyViewModel =
             it
         ) }
     }
+    val error by viewModel.errorFlow.collectAsState()
 
     LaunchedEffect(Unit) {
         viewModel.refresh()
     }
 
+    if (error.isNotEmpty()) {
+        AlertDialog(
+            onDismissRequest = {
+                viewModel.clearError()
+            },
+            title = { Text(stringResource(R.string.error_text)) },
+            text = {
+                Text(stringResource(R.string.error_unknown))
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    val clip: ClipData = ClipData.newPlainText("Error log", error)
+                    clipboard.setPrimaryClip(clip)
+                    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
+                        Toast.makeText(context, context.getString(R.string.log_copied), Toast.LENGTH_SHORT).show()
+                    }
+                }) {
+                    Text(stringResource(R.string.btn_copy_log))
+                }
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    viewModel.clearError()
+                }) {
+                    Text(stringResource(R.string.btn_continue))
+                }
+            }
+        )
+    }
+
     Scaffold(
         topBar = {
             TopAppBar(

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

@@ -1,8 +1,13 @@
 package com.cherret.zaprett.ui.screen
 
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
 import android.content.Context.MODE_PRIVATE
 import android.content.Intent
 import android.net.VpnService
+import android.os.Build
+import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -59,6 +64,7 @@ fun StrategySelectionScreen(navController: NavController, vpnLauncher: ActivityR
     val prefs = context.getSharedPreferences("settings", MODE_PRIVATE)
     var showDialog = remember { mutableStateOf(false) }
     val requestVpnPermission by viewModel.requestVpnPermission.collectAsState()
+    val error by viewModel.errorFlow.collectAsState()
 
     if (showDialog.value) {
         InfoAlert { showDialog.value = false }
@@ -76,6 +82,37 @@ fun StrategySelectionScreen(navController: NavController, vpnLauncher: ActivityR
         }
     }
 
+    if (error.isNotEmpty()) {
+        AlertDialog(
+            onDismissRequest = {
+                viewModel.clearError()
+            },
+            title = { Text(stringResource(R.string.error_text)) },
+            text = {
+                Text(stringResource(R.string.error_unknown))
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    val clip: ClipData = ClipData.newPlainText("Error log", error)
+                    clipboard.setPrimaryClip(clip)
+                    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
+                        Toast.makeText(context, context.getString(R.string.log_copied), Toast.LENGTH_SHORT).show()
+                    }
+                }) {
+                    Text(stringResource(R.string.btn_copy_log))
+                }
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    viewModel.clearError()
+                }) {
+                    Text(stringResource(R.string.btn_continue))
+                }
+            }
+        )
+    }
+
     Scaffold(
         topBar = {
             TopAppBar(

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

@@ -22,6 +22,7 @@ import com.cherret.zaprett.utils.restartService
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import java.io.File
 import java.io.FileOutputStream
@@ -37,6 +38,9 @@ abstract class BaseListsViewModel(application: Application) : AndroidViewModel(a
     var isRefreshing by mutableStateOf(false)
         private set
 
+    private val _errorFlow = MutableStateFlow("")
+    val errorFlow = _errorFlow.asStateFlow()
+
     private var _showNoPermissionDialog = MutableStateFlow(false)
     val showNoPermissionDialog: StateFlow<Boolean> = _showNoPermissionDialog
 
@@ -72,12 +76,18 @@ abstract class BaseListsViewModel(application: Application) : AndroidViewModel(a
                 actionLabel = context.getString(R.string.btn_restart_service)
             )
             if (result == SnackbarResult.ActionPerformed) {
-                restartService {}
+                restartService { error ->
+                    _errorFlow.value = error
+                }
                 snackbarHostState.showSnackbar(context.getString(R.string.snack_reload))
             }
         }
     }
 
+    fun clearError() {
+        _errorFlow.value = ""
+    }
+
     fun copySelectedFile(context: Context, path: String, uri: Uri) {
         //if (!Environment.isExternalStorageManager()) return
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R){

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

@@ -43,6 +43,8 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
     val context = application
     private val _requestVpnPermission = MutableStateFlow(false)
     val requestVpnPermission = _requestVpnPermission.asStateFlow()
+    private val _errorFlow = MutableStateFlow("")
+    val errorFlow = _errorFlow.asStateFlow()
     val strategyStates = mutableStateListOf<StrategyCheckResult>()
     var noHostsCard = mutableStateOf(false)
         private set
@@ -125,8 +127,12 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
             strategyStates[index] = current.copy(status = StrategyTestingStatus.Testing)
             enableStrategy(current.path, prefs)
             if (prefs.getBoolean("use_module", false)) {
-                getStatus { if (it) stopService {} }
+                getStatus { if (it) stopService { error ->
-                startService {}
+                    _errorFlow.value = error
+                } }
+                startService { error ->
+                    _errorFlow.value = error
+                }
                 try {
                     val progress = countReachable(index, targets)
                     val old = strategyStates[index]
@@ -135,7 +141,9 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
                         status = StrategyTestingStatus.Completed
                     )
                 } finally {
-                    stopService {}
+                    stopService { error ->
+                        _errorFlow.value = error
+                    }
                     disableStrategy(current.path, prefs)
                 }
             }
@@ -189,4 +197,7 @@ class StrategySelectionViewModel(application: Application) : AndroidViewModel(ap
     fun clearVpnPermissionRequest() {
         _requestVpnPermission.value = false
     }
+    fun clearError() {
+        _errorFlow.value = ""
+    }
 }