quick wins + test cases

ROADMAP.md

@@ -0,0 +1,54 @@
+# Product Roadmap
+
+## Quick Wins (1-3 days)
+
+- [x] Duplicate UX polish
+- Add subtle in-app banner/snackbar (in addition to toast) with optional "View in history".
+
+- [x] Batch mode polish
+- Add per-item copy/share in batch panel.
+- Add "newest first" timestamp labels for batch captures.
+
+- [x] History export formats
+- Add CSV + JSON export options next to plain text share.
+
+- [x] Scan result type actions
+- One-tap actions for Phone/SMS/Email/Wi-Fi/Contact/Calendar where possible.
+
+- [x] Settings for scan feedback
+- Toggle haptic/beep on successful scan.
+
+## Mid-size Features (3-7 days)
+
+1. Import history
+- Restore from CSV/JSON backup.
+- Handle duplicates and merge policy.
+
+2. Favorites / pin scans
+- Pin important entries, filter by favorites.
+
+3. Tagging
+- Add tags/folders and filter chips in History.
+
+4. Improved image scan
+- Support multi-code detection from one image and let user pick result.
+
+## Bigger Features (1-3 weeks)
+
+1. Structured parser layer
+- Parse vCard/Wi-Fi/calendar deeply and show rich result cards before actions.
+
+2. Background camera quality controls
+- Adaptive analyzer settings for tiny/low-contrast codes.
+
+3. Security enhancement package
+- Expand local URL checks (homograph/punycode heuristics, known suspicious patterns).
+- Optional strict mode before open.
+
+4. Backup/restore flow
+- Full local backup with versioned schema and migration support.
+
+## Suggested Next 2
+
+1. Banner/snackbar duplicate feedback
+2. CSV/JSON export in History

app/src/main/java/com/clean/scanner/settings/SettingsRepository.kt

@@ -13,6 +13,7 @@ class SettingsRepository(private val context: Context) {
     private object Keys {
         val historyEnabled = booleanPreferencesKey("history_enabled")
         val warningsEnabled = booleanPreferencesKey("warnings_enabled")
+        val scanFeedbackEnabled = booleanPreferencesKey("scan_feedback_enabled")
     }
 
     val historyEnabled: Flow<Boolean> = context.dataStore.data.map { prefs ->
@@ -23,6 +24,10 @@ class SettingsRepository(private val context: Context) {
         prefs[Keys.warningsEnabled] ?: true
     }
 
+    val scanFeedbackEnabled: Flow<Boolean> = context.dataStore.data.map { prefs ->
+        prefs[Keys.scanFeedbackEnabled] ?: true
+    }
+
     suspend fun setHistoryEnabled(enabled: Boolean) {
         context.dataStore.edit { it[Keys.historyEnabled] = enabled }
     }
@@ -30,4 +35,8 @@ class SettingsRepository(private val context: Context) {
     suspend fun setWarningsEnabled(enabled: Boolean) {
         context.dataStore.edit { it[Keys.warningsEnabled] = enabled }
     }
+
+    suspend fun setScanFeedbackEnabled(enabled: Boolean) {
+        context.dataStore.edit { it[Keys.scanFeedbackEnabled] = enabled }
+    }
 }

app/src/main/java/com/clean/scanner/ui/AppViewModel.kt

@@ -15,6 +15,7 @@ import kotlinx.coroutines.launch
 data class AppUiState(
     val historyEnabled: Boolean = false,
     val warningsEnabled: Boolean = true,
+    val scanFeedbackEnabled: Boolean = true,
     val history: List<ScanRecord> = emptyList(),
     val searchQuery: String = ""
 )
@@ -28,12 +29,14 @@ class AppViewModel(
     val uiState: StateFlow<AppUiState> = combine(
         container.settingsRepository.historyEnabled,
         container.settingsRepository.warningsEnabled,
+        container.settingsRepository.scanFeedbackEnabled,
         container.scanRepository.observeHistory(),
         query
-    ) { historyEnabled, warningsEnabled, history, q ->
+    ) { historyEnabled, warningsEnabled, scanFeedbackEnabled, history, q ->
         AppUiState(
             historyEnabled = historyEnabled,
             warningsEnabled = warningsEnabled,
+            scanFeedbackEnabled = scanFeedbackEnabled,
             history = if (q.isBlank()) history else history.filter {
                 it.content.contains(q, ignoreCase = true) || it.type.contains(q, ignoreCase = true)
             },
@@ -60,6 +63,12 @@ class AppViewModel(
         }
     }
 
+    fun setScanFeedbackEnabled(enabled: Boolean) {
+        viewModelScope.launch {
+            container.settingsRepository.setScanFeedbackEnabled(enabled)
+        }
+    }
+
     fun deleteHistoryItem(id: Long) {
         viewModelScope.launch {
             container.scanRepository.deleteById(id)

app/src/main/java/com/clean/scanner/ui/CleanScannerAppRoot.kt

@@ -68,9 +68,17 @@ fun CleanScannerAppRoot(container: AppContainer) {
                 RootTab.Scanner -> ScannerScreen(
                     analysisEnabled = scannerState.analysisEnabled,
                     lastResult = scannerState.lastResult,
+                    batchMode = scannerState.batchMode,
+                    batchResults = scannerState.batchResults,
+                    duplicateFeedbackNonce = scannerState.duplicateFeedbackNonce,
+                    scanFeedbackNonce = scannerState.scanFeedbackNonce,
                     warningsEnabled = appState.warningsEnabled,
+                    scanFeedbackEnabled = appState.scanFeedbackEnabled,
                     onScan = scannerViewModel::onScan,
-                    onScanAgain = scannerViewModel::resumeScanning
+                    onScanAgain = scannerViewModel::resumeScanning,
+                    onBatchModeChange = scannerViewModel::setBatchMode,
+                    onClearBatchResults = scannerViewModel::clearBatchResults,
+                    onOpenHistory = { activeTab = RootTab.History }
                 )
 
                 RootTab.History -> HistoryScreen(
@@ -84,8 +92,10 @@ fun CleanScannerAppRoot(container: AppContainer) {
                 RootTab.Settings -> SettingsScreen(
                     historyEnabled = appState.historyEnabled,
                     warningsEnabled = appState.warningsEnabled,
+                    scanFeedbackEnabled = appState.scanFeedbackEnabled,
                     onHistoryToggle = appViewModel::setHistoryEnabled,
-                    onWarningsToggle = appViewModel::setWarningsEnabled
+                    onWarningsToggle = appViewModel::setWarningsEnabled,
+                    onScanFeedbackToggle = appViewModel::setScanFeedbackEnabled
                 )
             }
         }

app/src/main/java/com/clean/scanner/ui/ScannerViewModel.kt

@@ -10,32 +10,67 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 
+data class BatchScanRecord(
+    val result: ScanResult,
+    val timestamp: Long
+)
+
 data class ScannerUiState(
     val lastResult: ScanResult? = null,
     val analysisEnabled: Boolean = true,
-    val lastScanTimestamp: Long = 0L
+    val lastScanTimestamp: Long = 0L,
+    val batchMode: Boolean = false,
+    val batchResults: List<BatchScanRecord> = emptyList(),
+    val recentScanKeys: List<String> = emptyList(),
+    val duplicateFeedbackNonce: Int = 0,
+    val scanFeedbackNonce: Int = 0
 )
 
 class ScannerViewModel(
-    private val container: AppContainer
+    private val saveScan: suspend (content: String, type: String) -> Unit,
+    private val nowProvider: () -> Long = { System.currentTimeMillis() }
 ) : ViewModel() {
     private val _uiState = MutableStateFlow(ScannerUiState())
     val uiState: StateFlow<ScannerUiState> = _uiState.asStateFlow()
 
     fun onScan(result: ScanResult) {
-        val now = System.currentTimeMillis()
+        val now = nowProvider()
         val current = _uiState.value
         if (!current.analysisEnabled) return
         if (now - current.lastScanTimestamp < 800) return
 
-        _uiState.value = current.copy(
+        val key = "${result.type}|${result.content}"
-            lastResult = result,
+        val isDuplicate = current.recentScanKeys.contains(key)
-            analysisEnabled = false,
+        val updatedRecent = (listOf(key) + current.recentScanKeys).distinct().take(200)
-            lastScanTimestamp = now
+
-        )
+        _uiState.value = if (current.batchMode) {
+            val updatedBatch = if (current.batchResults.any { "${it.result.type}|${it.result.content}" == key }) {
+                current.batchResults
+            } else {
+                (listOf(BatchScanRecord(result = result, timestamp = now)) + current.batchResults).take(100)
+            }
+            current.copy(
+                lastResult = null,
+                analysisEnabled = true,
+                lastScanTimestamp = now,
+                batchResults = updatedBatch,
+                recentScanKeys = updatedRecent,
+                duplicateFeedbackNonce = if (isDuplicate) current.duplicateFeedbackNonce + 1 else current.duplicateFeedbackNonce,
+                scanFeedbackNonce = current.scanFeedbackNonce + 1
+            )
+        } else {
+            current.copy(
+                lastResult = result,
+                analysisEnabled = false,
+                lastScanTimestamp = now,
+                recentScanKeys = updatedRecent,
+                duplicateFeedbackNonce = if (isDuplicate) current.duplicateFeedbackNonce + 1 else current.duplicateFeedbackNonce,
+                scanFeedbackNonce = current.scanFeedbackNonce + 1
+            )
+        }
 
         viewModelScope.launch {
-            container.scanRepository.maybeSaveScan(result.content, result.type)
+            saveScan(result.content, result.type)
         }
     }
 
@@ -43,10 +78,24 @@ class ScannerViewModel(
         _uiState.value = _uiState.value.copy(analysisEnabled = true, lastResult = null)
     }
 
+    fun setBatchMode(enabled: Boolean) {
+        _uiState.value = _uiState.value.copy(
+            batchMode = enabled,
+            analysisEnabled = true,
+            lastResult = null
+        )
+    }
+
+    fun clearBatchResults() {
+        _uiState.value = _uiState.value.copy(batchResults = emptyList())
+    }
+
     class Factory(private val container: AppContainer) : ViewModelProvider.Factory {
         @Suppress("UNCHECKED_CAST")
         override fun <T : ViewModel> create(modelClass: Class<T>): T {
-            return ScannerViewModel(container) as T
+            return ScannerViewModel(
+                saveScan = { content, type -> container.scanRepository.maybeSaveScan(content, type) }
+            ) as T
         }
     }
 }

app/src/main/java/com/clean/scanner/ui/screens/HistoryScreen.kt

@@ -26,6 +26,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.clean.scanner.R
 import com.clean.scanner.domain.ScanRecord
+import com.clean.scanner.util.HistoryExportFormatter
 import com.clean.scanner.util.Intents
 import java.text.DateFormat
 import java.util.Date
@@ -91,12 +92,30 @@ fun HistoryScreen(
         Row(modifier = Modifier.fillMaxWidth()) {
             TextButton(
                 onClick = {
-                    val exportText = buildHistoryExportText(history)
+                    val exportText = HistoryExportFormatter.formatText(history)
-                    Intents.shareText(context, exportText)
+                    Intents.shareContent(context, exportText, "text/plain")
                 },
                 enabled = history.isNotEmpty()
             ) {
-                Text(stringResource(R.string.share_history))
+                Text(stringResource(R.string.share_txt))
+            }
+            TextButton(
+                onClick = {
+                    val exportCsv = HistoryExportFormatter.formatCsv(history)
+                    Intents.shareContent(context, exportCsv, "text/csv")
+                },
+                enabled = history.isNotEmpty()
+            ) {
+                Text(stringResource(R.string.share_csv))
+            }
+            TextButton(
+                onClick = {
+                    val exportJson = HistoryExportFormatter.formatJson(history)
+                    Intents.shareContent(context, exportJson, "application/json")
+                },
+                enabled = history.isNotEmpty()
+            ) {
+                Text(stringResource(R.string.share_json))
             }
             TextButton(onClick = { showDeleteAll.value = true }) {
                 Text(stringResource(R.string.delete_all))
@@ -148,12 +167,3 @@ private fun HistoryRow(
         }
     )
 }
-
-private fun buildHistoryExportText(history: List<ScanRecord>): String {
-    if (history.isEmpty()) return ""
-    val formatter = DateFormat.getDateTimeInstance()
-    return history.joinToString(separator = "\n\n") { item ->
-        val time = formatter.format(Date(item.timestamp))
-        "$time\n${item.type}\n${item.content}"
-    }
-}

app/src/main/java/com/clean/scanner/ui/screens/ScannerScreen.kt

@@ -3,12 +3,16 @@ package com.clean.scanner.ui.screens
 import android.Manifest
 import android.app.Activity
 import android.content.Intent
+import android.media.AudioManager
+import android.media.ToneGenerator
 import android.net.Uri
 import android.provider.Settings
+import android.widget.Toast
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.background
+import androidx.compose.foundation.horizontalScroll
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -17,7 +21,6 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.horizontalScroll
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
@@ -29,10 +32,14 @@ import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.SnackbarResult
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -40,10 +47,13 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.geometry.CornerRadius
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.hapticfeedback.HapticFeedbackType
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalHapticFeedback
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
@@ -51,21 +61,40 @@ import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import com.clean.scanner.R
 import com.clean.scanner.domain.ScanResult
+import com.clean.scanner.ui.BatchScanRecord
 import com.clean.scanner.ui.components.CameraPreview
 import com.clean.scanner.util.ClipboardUtil
 import com.clean.scanner.util.Intents
+import com.clean.scanner.util.ScanContentParsers
 import com.clean.scanner.util.UrlRiskScorer
+import com.google.mlkit.vision.barcode.BarcodeScanning
+import com.google.mlkit.vision.barcode.common.Barcode
+import com.google.mlkit.vision.common.InputImage
+import java.text.DateFormat
+import java.util.Date
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ScannerScreen(
     analysisEnabled: Boolean,
     lastResult: ScanResult?,
+    batchMode: Boolean,
+    batchResults: List<BatchScanRecord>,
+    duplicateFeedbackNonce: Int,
+    scanFeedbackNonce: Int,
     warningsEnabled: Boolean,
+    scanFeedbackEnabled: Boolean,
     onScan: (ScanResult) -> Unit,
-    onScanAgain: () -> Unit
+    onScanAgain: () -> Unit,
+    onBatchModeChange: (Boolean) -> Unit,
+    onClearBatchResults: () -> Unit,
+    onOpenHistory: () -> Unit
 ) {
     val context = LocalContext.current
+    val haptic = LocalHapticFeedback.current
+    val duplicateSnackbarHostState = remember { SnackbarHostState() }
+    val toneGenerator = remember { ToneGenerator(AudioManager.STREAM_NOTIFICATION, 70) }
+
     var cameraGranted by remember {
         mutableStateOf(
             ContextCompat.checkSelfPermission(
@@ -79,9 +108,12 @@ fun ScannerScreen(
     var torchAvailable by remember { mutableStateOf(false) }
     var showRiskWarning by remember { mutableStateOf(false) }
     var pendingOpenUrl by remember { mutableStateOf<String?>(null) }
+    var showImageScanFailed by remember { mutableStateOf(false) }
+    var showNoCodeInImage by remember { mutableStateOf(false) }
     val activity = context as? Activity
+    val imageScanner = remember { BarcodeScanning.getClient() }
 
-    val launcher = rememberLauncherForActivityResult(
+    val permissionLauncher = rememberLauncherForActivityResult(
         contract = ActivityResultContracts.RequestPermission()
     ) { granted ->
         cameraGranted = granted
@@ -93,8 +125,66 @@ fun ScannerScreen(
         }
     }
 
+    val imagePicker = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.GetContent()
+    ) { uri ->
+        if (uri == null) return@rememberLauncherForActivityResult
+        val image = try {
+            InputImage.fromFilePath(context, uri)
+        } catch (_: Exception) {
+            showImageScanFailed = true
+            return@rememberLauncherForActivityResult
+        }
+
+        imageScanner.process(image)
+            .addOnSuccessListener { barcodes ->
+                val first = barcodes.firstOrNull()
+                val raw = first?.rawValue
+                if (raw.isNullOrBlank()) {
+                    showNoCodeInImage = true
+                } else {
+                    onScan(ScanResult(content = raw, type = first.valueType.toHumanType()))
+                }
+            }
+            .addOnFailureListener {
+                showImageScanFailed = true
+            }
+    }
+
     LaunchedEffect(Unit) {
-        if (!cameraGranted) launcher.launch(Manifest.permission.CAMERA)
+        if (!cameraGranted) permissionLauncher.launch(Manifest.permission.CAMERA)
+    }
+
+    LaunchedEffect(duplicateFeedbackNonce) {
+        if (duplicateFeedbackNonce > 0) {
+            Toast.makeText(
+                context,
+                context.getString(R.string.already_scanned),
+                Toast.LENGTH_SHORT
+            ).show()
+            val result = duplicateSnackbarHostState.showSnackbar(
+                message = context.getString(R.string.already_scanned),
+                actionLabel = context.getString(R.string.view_history),
+                withDismissAction = true
+            )
+            if (result == SnackbarResult.ActionPerformed) {
+                onOpenHistory()
+            }
+        }
+    }
+
+    LaunchedEffect(scanFeedbackNonce, scanFeedbackEnabled) {
+        if (scanFeedbackEnabled && scanFeedbackNonce > 0) {
+            haptic.performHapticFeedback(HapticFeedbackType.LongPress)
+            toneGenerator.startTone(ToneGenerator.TONE_PROP_BEEP, 120)
+        }
+    }
+
+    DisposableEffect(Unit) {
+        onDispose {
+            imageScanner.close()
+            toneGenerator.release()
+        }
     }
 
     Box(modifier = Modifier.fillMaxSize()) {
@@ -133,13 +223,14 @@ fun ScannerScreen(
                     center = androidx.compose.ui.geometry.Offset(cx, cy)
                 )
             }
+
             Text(
                 text = stringResource(R.string.pinch_to_zoom_hint),
                 color = Color.White,
                 textAlign = TextAlign.Center,
                 modifier = Modifier
                     .align(Alignment.BottomCenter)
-                    .padding(bottom = 40.dp)
+                    .padding(bottom = if (batchMode) 190.dp else 56.dp)
                     .background(
                         color = Color.Black.copy(alpha = 0.35f),
                         shape = RoundedCornerShape(18.dp)
@@ -147,17 +238,62 @@ fun ScannerScreen(
                     .padding(horizontal = 14.dp, vertical = 8.dp)
             )
 
-            if (torchAvailable) {
+            IconButton(
-                RowTopToggle(
+                onClick = { imagePicker.launch("image/*") },
-                    checked = torchEnabled,
+                modifier = Modifier
-                    onCheckedChange = { torchEnabled = it },
+                    .align(Alignment.TopEnd)
-                    label = stringResource(R.string.flashlight)
+                    .padding(top = 12.dp, end = 12.dp)
+                    .background(
+                        color = Color.Black.copy(alpha = 0.35f),
+                        shape = RoundedCornerShape(14.dp)
+                    )
+            ) {
+                Icon(
+                    painter = painterResource(id = android.R.drawable.ic_menu_gallery),
+                    contentDescription = stringResource(R.string.scan_from_image),
+                    tint = Color.White
                 )
             }
+
+            Column(
+                modifier = Modifier
+                    .align(Alignment.TopStart)
+                    .padding(12.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                if (torchAvailable) {
+                    OverlayToggle(
+                        checked = torchEnabled,
+                        onCheckedChange = { torchEnabled = it },
+                        label = stringResource(R.string.flashlight)
+                    )
+                }
+                OverlayToggle(
+                    checked = batchMode,
+                    onCheckedChange = onBatchModeChange,
+                    label = stringResource(R.string.batch_mode)
+                )
+            }
+
+            if (batchMode) {
+                Box(modifier = Modifier.align(Alignment.BottomCenter)) {
+                    BatchResultsPanel(
+                        results = batchResults,
+                        onClear = onClearBatchResults
+                    )
+                }
+            }
+
+            SnackbarHost(
+                hostState = duplicateSnackbarHostState,
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .padding(bottom = if (batchMode) 12.dp else 80.dp)
+            )
         } else {
             PermissionContent(
                 showSettingsHint = showSettingsHint,
-                onRequestPermission = { launcher.launch(Manifest.permission.CAMERA) },
+                onRequestPermission = { permissionLauncher.launch(Manifest.permission.CAMERA) },
                 onOpenSettings = {
                     val intent = Intent(
                         Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
@@ -168,7 +304,7 @@ fun ScannerScreen(
             )
         }
 
-        if (lastResult != null) {
+        if (lastResult != null && !batchMode) {
             ModalBottomSheet(onDismissRequest = onScanAgain) {
                 Column(
                     modifier = Modifier
@@ -211,6 +347,51 @@ fun ScannerScreen(
                             )
                         }
                     }
+
+                    when (lastResult.type) {
+                        "Phone" -> {
+                            Button(onClick = {
+                                Intents.dialPhone(context, ScanContentParsers.extractPhoneNumber(lastResult.content))
+                            }) {
+                                Text(stringResource(R.string.call_number))
+                            }
+                        }
+
+                        "SMS" -> {
+                            Button(onClick = {
+                                val smsData = ScanContentParsers.parseSms(lastResult.content)
+                                Intents.sendSms(context, smsData.first, smsData.second)
+                            }) {
+                                Text(stringResource(R.string.send_sms))
+                            }
+                        }
+
+                        "Email" -> {
+                            Button(onClick = {
+                                Intents.sendEmail(context, ScanContentParsers.extractEmail(lastResult.content), null)
+                            }) {
+                                Text(stringResource(R.string.send_email))
+                            }
+                        }
+
+                        "WiFi" -> {
+                            Button(onClick = { Intents.openWifiSettings(context) }) {
+                                Text(stringResource(R.string.open_wifi_settings))
+                            }
+                        }
+
+                        "Contact" -> {
+                            Button(onClick = { Intents.addContact(context, lastResult.content) }) {
+                                Text(stringResource(R.string.add_contact))
+                            }
+                        }
+
+                        "Calendar" -> {
+                            Button(onClick = { Intents.addCalendarEvent(context, lastResult.content) }) {
+                                Text(stringResource(R.string.add_calendar_event))
+                            }
+                        }
+                    }
                 }
             }
         }
@@ -232,28 +413,138 @@ fun ScannerScreen(
                 }
             )
         }
+
+        if (showNoCodeInImage) {
+            AlertDialog(
+                onDismissRequest = { showNoCodeInImage = false },
+                text = { Text(stringResource(R.string.no_code_found_in_image)) },
+                confirmButton = {
+                    TextButton(onClick = { showNoCodeInImage = false }) {
+                        Text(stringResource(R.string.confirm))
+                    }
+                }
+            )
+        }
+
+        if (showImageScanFailed) {
+            AlertDialog(
+                onDismissRequest = { showImageScanFailed = false },
+                text = { Text(stringResource(R.string.image_scan_failed)) },
+                confirmButton = {
+                    TextButton(onClick = { showImageScanFailed = false }) {
+                        Text(stringResource(R.string.confirm))
+                    }
+                }
+            )
+        }
     }
 }
 
 @Composable
-private fun RowTopToggle(
+private fun OverlayToggle(
     checked: Boolean,
     onCheckedChange: (Boolean) -> Unit,
     label: String
 ) {
+    Column(
+        modifier = Modifier
+            .background(
+                color = Color.Black.copy(alpha = 0.35f),
+                shape = RoundedCornerShape(12.dp)
+            )
+            .padding(horizontal = 10.dp, vertical = 8.dp)
+    ) {
+        Text(text = label, color = Color.White)
+        Switch(checked = checked, onCheckedChange = onCheckedChange)
+    }
+}
+
+@Composable
+private fun BatchResultsPanel(
+    results: List<BatchScanRecord>,
+    onClear: () -> Unit
+) {
+    val context = LocalContext.current
+    val timeFormat = remember { DateFormat.getTimeInstance(DateFormat.SHORT) }
+
     Box(
         modifier = Modifier
             .fillMaxWidth()
-            .padding(12.dp),
+            .padding(horizontal = 12.dp, vertical = 12.dp),
-        contentAlignment = Alignment.TopStart
+        contentAlignment = Alignment.BottomCenter
     ) {
-        Column {
+        Column(
-            Text(text = label, color = Color.White)
+            modifier = Modifier
-            Switch(checked = checked, onCheckedChange = onCheckedChange)
+                .fillMaxWidth()
+                .background(
+                    color = Color.Black.copy(alpha = 0.42f),
+                    shape = RoundedCornerShape(14.dp)
+                )
+                .padding(12.dp),
+            verticalArrangement = Arrangement.spacedBy(8.dp)
+        ) {
+            Text(
+                text = stringResource(R.string.batch_captures_count, results.size),
+                color = Color.White
+            )
+            results.take(3).forEach { item ->
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f)) {
+                        Text(
+                            text = "${item.result.type}: ${item.result.content}",
+                            color = Color.White.copy(alpha = 0.92f),
+                            maxLines = 1
+                        )
+                        Text(
+                            text = timeFormat.format(Date(item.timestamp)),
+                            color = Color.White.copy(alpha = 0.7f)
+                        )
+                    }
+                    Row {
+                        IconButton(onClick = { ClipboardUtil.copy(context, item.result.content) }) {
+                            Icon(
+                                imageVector = Icons.Default.ContentCopy,
+                                contentDescription = stringResource(R.string.copy),
+                                tint = Color.White
+                            )
+                        }
+                        IconButton(onClick = { Intents.shareText(context, item.result.content) }) {
+                            Icon(
+                                imageVector = Icons.Default.Share,
+                                contentDescription = stringResource(R.string.share),
+                                tint = Color.White
+                            )
+                        }
+                    }
+                }
+            }
+            Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                TextButton(onClick = onClear, enabled = results.isNotEmpty()) {
+                    Text(stringResource(R.string.clear_batch))
+                }
+                TextButton(
+                    onClick = { Intents.shareText(context, buildBatchExport(results)) },
+                    enabled = results.isNotEmpty()
+                ) {
+                    Text(stringResource(R.string.share_batch))
+                }
+            }
         }
     }
 }
 
+private fun buildBatchExport(results: List<BatchScanRecord>): String {
+    if (results.isEmpty()) return ""
+    val formatter = DateFormat.getDateTimeInstance()
+    return results.joinToString(separator = "\n\n") { item ->
+        "${formatter.format(Date(item.timestamp))}\n${item.result.type}\n${item.result.content}"
+    }
+}
+
 @Composable
 private fun PermissionContent(
     showSettingsHint: Boolean,
@@ -278,3 +569,19 @@ private fun PermissionContent(
         }
     }
 }
+
+private fun Int.toHumanType(): String = when (this) {
+    Barcode.TYPE_CONTACT_INFO -> "Contact"
+    Barcode.TYPE_EMAIL -> "Email"
+    Barcode.TYPE_ISBN -> "ISBN"
+    Barcode.TYPE_PHONE -> "Phone"
+    Barcode.TYPE_PRODUCT -> "Product"
+    Barcode.TYPE_SMS -> "SMS"
+    Barcode.TYPE_TEXT -> "Text"
+    Barcode.TYPE_URL -> "URL"
+    Barcode.TYPE_WIFI -> "WiFi"
+    Barcode.TYPE_GEO -> "Geo"
+    Barcode.TYPE_CALENDAR_EVENT -> "Calendar"
+    Barcode.TYPE_DRIVER_LICENSE -> "Driver license"
+    else -> "Unknown"
+}

app/src/main/java/com/clean/scanner/ui/screens/SettingsScreen.kt

@@ -22,8 +22,10 @@ import com.clean.scanner.R
 fun SettingsScreen(
     historyEnabled: Boolean,
     warningsEnabled: Boolean,
+    scanFeedbackEnabled: Boolean,
     onHistoryToggle: (Boolean, Boolean) -> Unit,
-    onWarningsToggle: (Boolean) -> Unit
+    onWarningsToggle: (Boolean) -> Unit,
+    onScanFeedbackToggle: (Boolean) -> Unit
 ) {
     val showDeleteConfirm = remember { mutableStateOf(false) }
 
@@ -70,6 +72,11 @@ fun SettingsScreen(
         Text(text = stringResource(R.string.security_warnings))
         Switch(checked = warningsEnabled, onCheckedChange = onWarningsToggle)
 
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Text(text = stringResource(R.string.scan_feedback))
+        Switch(checked = scanFeedbackEnabled, onCheckedChange = onScanFeedbackToggle)
+
         Spacer(modifier = Modifier.height(24.dp))
         Text(text = stringResource(R.string.about))
         Text(text = stringResource(R.string.version))

app/src/main/java/com/clean/scanner/util/HistoryExportFormatter.kt

@@ -0,0 +1,50 @@
+package com.clean.scanner.util
+
+import com.clean.scanner.domain.ScanRecord
+import java.text.DateFormat
+import java.util.Date
+
+object HistoryExportFormatter {
+    fun formatText(history: List<ScanRecord>): String {
+        if (history.isEmpty()) return ""
+        val formatter = DateFormat.getDateTimeInstance()
+        return history.joinToString(separator = "\n\n") { item ->
+            val time = formatter.format(Date(item.timestamp))
+            "$time\n${item.type}\n${item.content}"
+        }
+    }
+
+    fun formatCsv(history: List<ScanRecord>): String {
+        if (history.isEmpty()) return ""
+        val formatter = DateFormat.getDateTimeInstance()
+        val header = "timestamp,type,content"
+        val rows = history.joinToString(separator = "\n") { item ->
+            val ts = csvEscape(formatter.format(Date(item.timestamp)))
+            val type = csvEscape(item.type)
+            val content = csvEscape(item.content)
+            "$ts,$type,$content"
+        }
+        return "$header\n$rows"
+    }
+
+    fun formatJson(history: List<ScanRecord>): String {
+        if (history.isEmpty()) return "[]"
+        return history.joinToString(prefix = "[\n", postfix = "\n]", separator = ",\n") { item ->
+            val escapedType = jsonEscape(item.type)
+            val escapedContent = jsonEscape(item.content)
+            "  {\"id\":${item.id},\"timestamp\":${item.timestamp},\"type\":\"$escapedType\",\"content\":\"$escapedContent\"}"
+        }
+    }
+
+    private fun csvEscape(value: String): String {
+        val escaped = value.replace("\"", "\"\"")
+        return "\"$escaped\""
+    }
+
+    private fun jsonEscape(value: String): String {
+        return value
+            .replace("\\", "\\\\")
+            .replace("\"", "\\\"")
+            .replace("\n", "\\n")
+    }
+}

app/src/main/java/com/clean/scanner/util/Intents.kt

@@ -3,6 +3,9 @@ package com.clean.scanner.util
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
+import android.provider.CalendarContract
+import android.provider.ContactsContract
+import android.provider.Settings
 import androidx.core.content.ContextCompat.startActivity
 
 object Intents {
@@ -12,11 +15,64 @@ object Intents {
     }
 
     fun shareText(context: Context, text: String) {
+        shareContent(context, text, "text/plain")
+    }
+
+    fun shareContent(context: Context, text: String, mimeType: String) {
         val intent = Intent(Intent.ACTION_SEND)
-            .setType("text/plain")
+            .setType(mimeType)
             .putExtra(Intent.EXTRA_TEXT, text)
             .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
         val chooser = Intent.createChooser(intent, null).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
         startActivity(context, chooser, null)
     }
+
+    fun dialPhone(context: Context, number: String) {
+        val intent = Intent(Intent.ACTION_DIAL, Uri.parse("tel:${number.trim()}"))
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        startActivity(context, intent, null)
+    }
+
+    fun sendSms(context: Context, number: String, message: String?) {
+        val base = number.trim()
+        val intent = Intent(Intent.ACTION_SENDTO, Uri.parse("smsto:$base"))
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        if (!message.isNullOrBlank()) {
+            intent.putExtra("sms_body", message)
+        }
+        startActivity(context, intent, null)
+    }
+
+    fun sendEmail(context: Context, email: String, subject: String?) {
+        val intent = Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:${email.trim()}"))
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        if (!subject.isNullOrBlank()) {
+            intent.putExtra(Intent.EXTRA_SUBJECT, subject)
+        }
+        startActivity(context, intent, null)
+    }
+
+    fun openWifiSettings(context: Context) {
+        val intent = Intent(Settings.ACTION_WIFI_SETTINGS).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        startActivity(context, intent, null)
+    }
+
+    fun addContact(context: Context, rawContent: String) {
+        val intent = Intent(Intent.ACTION_INSERT).apply {
+            type = ContactsContract.Contacts.CONTENT_TYPE
+            putExtra(ContactsContract.Intents.Insert.NOTES, rawContent)
+            addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        }
+        startActivity(context, intent, null)
+    }
+
+    fun addCalendarEvent(context: Context, rawContent: String) {
+        val intent = Intent(Intent.ACTION_INSERT).apply {
+            data = CalendarContract.Events.CONTENT_URI
+            putExtra(CalendarContract.Events.TITLE, "Scanned event")
+            putExtra(CalendarContract.Events.DESCRIPTION, rawContent)
+            addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        }
+        startActivity(context, intent, null)
+    }
 }

app/src/main/java/com/clean/scanner/util/ScanContentParsers.kt

@@ -0,0 +1,31 @@
+package com.clean.scanner.util
+
+object ScanContentParsers {
+    fun extractPhoneNumber(raw: String): String {
+        return raw.substringAfter("tel:", raw)
+            .substringBefore('?')
+            .trim()
+    }
+
+    fun parseSms(raw: String): Pair<String, String?> {
+        val cleaned = raw.trim()
+        return if (cleaned.startsWith("SMSTO:", ignoreCase = true)) {
+            val parts = cleaned.split(':', limit = 3)
+            val number = parts.getOrNull(1).orEmpty()
+            val body = parts.getOrNull(2)
+            number to body
+        } else {
+            cleaned to null
+        }
+    }
+
+    fun extractEmail(raw: String): String {
+        val cleaned = raw.trim()
+        if (cleaned.startsWith("mailto:", ignoreCase = true)) {
+            return cleaned.substringAfter("mailto:").substringBefore('?').trim()
+        }
+        val match = Regex("[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+")
+            .find(cleaned)
+        return match?.value ?: cleaned
+    }
+}

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

@@ -8,6 +8,7 @@
     <string name="privacy">Datenschutz</string>
     <string name="privacy_text">Keine Datenübertragung, keine Werbung, kein Tracking.</string>
     <string name="security_warnings">Sicherheitswarnungen</string>
+    <string name="scan_feedback">Scan-Feedback (Ton + Vibration)</string>
     <string name="about">Über</string>
     <string name="copy">Kopieren</string>
     <string name="share">Teilen</string>
@@ -33,4 +34,22 @@
     <string name="request_camera">Kamera erlauben</string>
     <string name="pinch_to_zoom_hint">Zum Zoomen bei kleinen Codes mit zwei Fingern aufziehen</string>
     <string name="share_history">Historie teilen</string>
+    <string name="share_txt">TXT</string>
+    <string name="share_csv">CSV</string>
+    <string name="share_json">JSON</string>
+    <string name="scan_from_image">Aus Bild scannen</string>
+    <string name="batch_mode">Stapelmodus</string>
+    <string name="batch_captures_count">Stapel-Scans: %1$d</string>
+    <string name="clear_batch">Stapel leeren</string>
+    <string name="share_batch">Stapel teilen</string>
+    <string name="no_code_found_in_image">Im gewählten Bild wurde kein QR- oder Barcode gefunden.</string>
+    <string name="image_scan_failed">Dieses Bild konnte nicht gelesen werden. Bitte anderes Bild versuchen.</string>
+    <string name="already_scanned">Bereits gescannt</string>
+    <string name="view_history">Historie anzeigen</string>
+    <string name="call_number">Nummer anrufen</string>
+    <string name="send_sms">SMS senden</string>
+    <string name="send_email">E-Mail senden</string>
+    <string name="open_wifi_settings">WLAN-Einstellungen öffnen</string>
+    <string name="add_contact">Kontakt hinzufügen</string>
+    <string name="add_calendar_event">Kalendereintrag hinzufügen</string>
 </resources>

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

@@ -8,6 +8,7 @@
     <string name="privacy">Privacy</string>
     <string name="privacy_text">No data transfer, no ads, no tracking.</string>
     <string name="security_warnings">Security warnings</string>
+    <string name="scan_feedback">Scan feedback (beep + haptic)</string>
     <string name="about">About</string>
     <string name="copy">Copy</string>
     <string name="share">Share</string>
@@ -33,4 +34,22 @@
     <string name="request_camera">Allow camera</string>
     <string name="pinch_to_zoom_hint">Pinch to zoom for small codes</string>
     <string name="share_history">Share history</string>
+    <string name="share_txt">TXT</string>
+    <string name="share_csv">CSV</string>
+    <string name="share_json">JSON</string>
+    <string name="scan_from_image">Scan from image</string>
+    <string name="batch_mode">Batch mode</string>
+    <string name="batch_captures_count">Batch captures: %1$d</string>
+    <string name="clear_batch">Clear batch</string>
+    <string name="share_batch">Share batch</string>
+    <string name="no_code_found_in_image">No QR or barcode found in the selected image.</string>
+    <string name="image_scan_failed">Could not read this image. Try another one.</string>
+    <string name="already_scanned">Already scanned</string>
+    <string name="view_history">View history</string>
+    <string name="call_number">Call number</string>
+    <string name="send_sms">Send SMS</string>
+    <string name="send_email">Send email</string>
+    <string name="open_wifi_settings">Open Wi-Fi settings</string>
+    <string name="add_contact">Add contact</string>
+    <string name="add_calendar_event">Add calendar event</string>
 </resources>

app/src/test/java/com/clean/scanner/testutil/MainDispatcherRule.kt

@@ -0,0 +1,23 @@
+package com.clean.scanner.testutil
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.TestDispatcher
+import kotlinx.coroutines.test.UnconfinedTestDispatcher
+import kotlinx.coroutines.test.resetMain
+import kotlinx.coroutines.test.setMain
+import org.junit.rules.TestWatcher
+import org.junit.runner.Description
+
+@OptIn(ExperimentalCoroutinesApi::class)
+class MainDispatcherRule(
+    private val dispatcher: TestDispatcher = UnconfinedTestDispatcher()
+) : TestWatcher() {
+    override fun starting(description: Description) {
+        Dispatchers.setMain(dispatcher)
+    }
+
+    override fun finished(description: Description) {
+        Dispatchers.resetMain()
+    }
+}

app/src/test/java/com/clean/scanner/ui/ScannerViewModelTest.kt

@@ -0,0 +1,95 @@
+package com.clean.scanner.ui
+
+import com.clean.scanner.domain.ScanResult
+import com.clean.scanner.testutil.MainDispatcherRule
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.advanceUntilIdle
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Rule
+import org.junit.Test
+
+@OptIn(ExperimentalCoroutinesApi::class)
+class ScannerViewModelTest {
+
+    @get:Rule
+    val mainDispatcherRule = MainDispatcherRule()
+
+    @Test
+    fun onScan_firstSingleScan_updatesStateAndSaves() = runTest {
+        val saved = mutableListOf<Pair<String, String>>()
+        var now = 1_000L
+        val viewModel = ScannerViewModel(
+            saveScan = { content, type -> saved += content to type },
+            nowProvider = { now }
+        )
+
+        viewModel.onScan(ScanResult(content = "https://example.com", type = "URL"))
+        advanceUntilIdle()
+
+        val state = viewModel.uiState.value
+        assertEquals("https://example.com", state.lastResult?.content)
+        assertEquals(false, state.analysisEnabled)
+        assertEquals(1, state.scanFeedbackNonce)
+        assertEquals(0, state.duplicateFeedbackNonce)
+        assertEquals(listOf("URL|https://example.com"), state.recentScanKeys)
+        assertEquals(listOf("https://example.com" to "URL"), saved)
+    }
+
+    @Test
+    fun duplicateScan_afterResume_incrementsDuplicateFeedback() = runTest {
+        val saved = mutableListOf<Pair<String, String>>()
+        var now = 1_000L
+        val viewModel = ScannerViewModel(
+            saveScan = { content, type -> saved += content to type },
+            nowProvider = { now }
+        )
+
+        val result = ScanResult(content = "ABC", type = "Text")
+        viewModel.onScan(result)
+        viewModel.resumeScanning()
+
+        now = 2_000L
+        viewModel.onScan(result)
+        advanceUntilIdle()
+
+        val state = viewModel.uiState.value
+        assertEquals(2, state.scanFeedbackNonce)
+        assertEquals(1, state.duplicateFeedbackNonce)
+        assertEquals(2, saved.size)
+    }
+
+    @Test
+    fun batchMode_addsUniqueKeepsNewestFirst_andClearWorks() = runTest {
+        val saved = mutableListOf<Pair<String, String>>()
+        var now = 1_000L
+        val viewModel = ScannerViewModel(
+            saveScan = { content, type -> saved += content to type },
+            nowProvider = { now }
+        )
+
+        viewModel.setBatchMode(true)
+        viewModel.onScan(ScanResult(content = "A", type = "Text"))
+
+        now = 2_000L
+        viewModel.onScan(ScanResult(content = "B", type = "Text"))
+
+        now = 3_000L
+        viewModel.onScan(ScanResult(content = "A", type = "Text"))
+        advanceUntilIdle()
+
+        val state = viewModel.uiState.value
+        assertEquals(2, state.batchResults.size)
+        assertEquals("B", state.batchResults[0].result.content)
+        assertEquals(2_000L, state.batchResults[0].timestamp)
+        assertEquals("A", state.batchResults[1].result.content)
+        assertEquals(1, state.duplicateFeedbackNonce)
+        assertEquals(3, state.scanFeedbackNonce)
+        assertTrue(state.analysisEnabled)
+
+        viewModel.clearBatchResults()
+        assertTrue(viewModel.uiState.value.batchResults.isEmpty())
+        assertEquals(3, saved.size)
+    }
+}

app/src/test/java/com/clean/scanner/util/HistoryExportFormatterTest.kt

@@ -0,0 +1,51 @@
+package com.clean.scanner.util
+
+import com.clean.scanner.domain.ScanRecord
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class HistoryExportFormatterTest {
+
+    @Test
+    fun formatText_empty_returnsEmptyString() {
+        assertEquals("", HistoryExportFormatter.formatText(emptyList()))
+    }
+
+    @Test
+    fun formatCsv_quotesAndEscapesFields() {
+        val history = listOf(
+            ScanRecord(
+                id = 1,
+                timestamp = 0L,
+                type = "Te,xt",
+                content = "hello \"world\""
+            )
+        )
+
+        val csv = HistoryExportFormatter.formatCsv(history)
+
+        assertTrue(csv.startsWith("timestamp,type,content\n"))
+        assertTrue(csv.contains("\"Te,xt\""))
+        assertTrue(csv.contains("\"hello \"\"world\"\"\""))
+    }
+
+    @Test
+    fun formatJson_escapesQuotesBackslashAndNewline() {
+        val history = listOf(
+            ScanRecord(
+                id = 7,
+                timestamp = 123L,
+                type = "Type\"A",
+                content = "line1\\line2\nnext"
+            )
+        )
+
+        val json = HistoryExportFormatter.formatJson(history)
+
+        assertTrue(json.contains("\"id\":7"))
+        assertTrue(json.contains("\"timestamp\":123"))
+        assertTrue(json.contains("\"type\":\"Type\\\"A\""))
+        assertTrue(json.contains("\"content\":\"line1\\\\line2\\nnext\""))
+    }
+}

app/src/test/java/com/clean/scanner/util/ScanContentParsersTest.kt

@@ -0,0 +1,26 @@
+package com.clean.scanner.util
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class ScanContentParsersTest {
+
+    @Test
+    fun extractPhoneNumber_handlesTelUri() {
+        val phone = ScanContentParsers.extractPhoneNumber("tel:+123456789?foo=bar")
+        assertEquals("+123456789", phone)
+    }
+
+    @Test
+    fun parseSms_handlesSmstoWithBody() {
+        val (number, body) = ScanContentParsers.parseSms("SMSTO:+49123456:hello there")
+        assertEquals("+49123456", number)
+        assertEquals("hello there", body)
+    }
+
+    @Test
+    fun extractEmail_handlesMailtoAndPlainText() {
+        assertEquals("x@y.com", ScanContentParsers.extractEmail("mailto:x@y.com?subject=hi"))
+        assertEquals("a.b+c@d.dev", ScanContentParsers.extractEmail("contact me at a.b+c@d.dev now"))
+    }
+}