feat: implement photo-based item creation and product-to-list functionality with bottom sheet UI

- Add camera/gallery photo capture for custom shopping list items with name and description fields
- Implement `addCustomItemWithImage` in `ListDetailViewModel` to create items with attached photos
- Add "Add to list" button in `ResultScreen` with list picker bottom sheet for scanned products
- Extend `ResultViewModel` with `addToList` method to save scanned products to shopping lists
- Add `PhotoSource

app/src/main/java/com/safebite/app/presentation/screen/lists/ListDetailScreen.kt

@@ -33,6 +33,7 @@ import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.AutoAwesome
 import androidx.compose.material.icons.filled.Camera
+import androidx.compose.material.icons.filled.CameraAlt
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Clear
 import androidx.compose.material.icons.filled.Close
@@ -76,22 +77,28 @@ import androidx.compose.runtime.mutableStateMapOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import android.graphics.Bitmap
 import android.net.Uri
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
+import java.io.File
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.safebite.app.R
 import com.safebite.app.domain.engine.CatalogProvider
+import com.safebite.app.presentation.common.components.PrimaryButton
 import com.safebite.app.presentation.theme.LocalDimens
 import com.safebite.app.presentation.theme.LocalStatusColors
 
@@ -132,6 +139,37 @@ fun ListDetailScreen(
     var recentlyExpanded by remember { mutableStateOf(true) }
     val expandedCategories = remember { mutableStateMapOf<String, Boolean>() }
 
+    var showPhotoPicker by remember { mutableStateOf(false) }
+    var showDescriptionDialog by remember { mutableStateOf(false) }
+    var selectedImageUri by remember { mutableStateOf<String?>(null) }
+    var itemName by remember { mutableStateOf("") }
+    var itemDescription by remember { mutableStateOf("") }
+    val context = LocalContext.current
+
+    val takePictureLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.TakePicturePreview()
+    ) { bitmap: Bitmap? ->
+        bitmap?.let {
+            val file = File(context.cacheDir, "sb_photo_${System.currentTimeMillis()}.jpg")
+            file.outputStream().use { out ->
+                bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out)
+            }
+            selectedImageUri = Uri.fromFile(file).toString()
+            showDescriptionDialog = true
+        }
+        showPhotoPicker = false
+    }
+
+    val pickImageLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.GetContent()
+    ) { uri: Uri? ->
+        uri?.let {
+            selectedImageUri = it.toString()
+            showDescriptionDialog = true
+        }
+        showPhotoPicker = false
+    }
+
     Scaffold(
         containerColor = MaterialTheme.colorScheme.background,
         topBar = {
@@ -151,6 +189,12 @@ fun ListDetailScreen(
                     }
                 },
                 actions = {
+                    IconButton(onClick = { showPhotoPicker = true }) {
+                        Icon(
+                            Icons.Filled.CameraAlt,
+                            contentDescription = stringResource(R.string.list_add_photo)
+                        )
+                    }
                     IconButton(onClick = onOpenScanner) {
                         Icon(Icons.Filled.Camera, contentDescription = "Scanner")
                     }
@@ -271,6 +315,38 @@ fun ListDetailScreen(
             onOpenProduct = selected.barcode?.let { bc -> { onOpenProduct(bc) } }
         )
     }
+
+    // Bottom sheet choix photo / galerie
+    if (showPhotoPicker) {
+        PhotoSourceBottomSheet(
+            onTakePhoto = { takePictureLauncher.launch(null) },
+            onPickGallery = { pickImageLauncher.launch("image/*") },
+            onDismiss = { showPhotoPicker = false }
+        )
+    }
+
+    // Dialog saisie nom + description pour nouvel item photo
+    if (showDescriptionDialog) {
+        AddPhotoItemDialog(
+            name = itemName,
+            onNameChange = { itemName = it },
+            description = itemDescription,
+            onDescriptionChange = { itemDescription = it },
+            onConfirm = {
+                viewModel.addCustomItemWithImage(itemName, itemDescription, selectedImageUri)
+                itemName = ""
+                itemDescription = ""
+                selectedImageUri = null
+                showDescriptionDialog = false
+            },
+            onDismiss = {
+                itemName = ""
+                itemDescription = ""
+                selectedImageUri = null
+                showDescriptionDialog = false
+            }
+        )
+    }
 }
 
 // ─────────────────────────────────────────────────────────────────────────────
@@ -1276,3 +1352,112 @@ private fun ParameterButton(
         }
     }
 }
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun PhotoSourceBottomSheet(
+    onTakePhoto: () -> Unit,
+    onPickGallery: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    ModalBottomSheet(
+        onDismissRequest = onDismiss,
+        sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 20.dp, vertical = 16.dp)
+        ) {
+            Text(
+                text = stringResource(R.string.list_add_photo),
+                style = MaterialTheme.typography.titleLarge,
+                fontWeight = FontWeight.Bold
+            )
+            Spacer(Modifier.height(20.dp))
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(12.dp)
+            ) {
+                ParameterButton(
+                    icon = Icons.Filled.Camera,
+                    label = stringResource(R.string.list_take_photo),
+                    onClick = onTakePhoto,
+                    modifier = Modifier.weight(1f)
+                )
+                ParameterButton(
+                    icon = Icons.Filled.Add,
+                    label = stringResource(R.string.list_pick_gallery),
+                    onClick = onPickGallery,
+                    modifier = Modifier.weight(1f)
+                )
+            }
+            Spacer(Modifier.height(16.dp))
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun AddPhotoItemDialog(
+    name: String,
+    onNameChange: (String) -> Unit,
+    description: String,
+    onDescriptionChange: (String) -> Unit,
+    onConfirm: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    ModalBottomSheet(
+        onDismissRequest = onDismiss,
+        sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 20.dp, vertical = 16.dp)
+                .navigationBarsPadding()
+        ) {
+            Text(
+                text = stringResource(R.string.list_add_photo),
+                style = MaterialTheme.typography.titleLarge,
+                fontWeight = FontWeight.Bold
+            )
+            Spacer(Modifier.height(16.dp))
+            OutlinedTextField(
+                value = name,
+                onValueChange = onNameChange,
+                label = { Text(stringResource(R.string.list_item_name)) },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth()
+            )
+            Spacer(Modifier.height(12.dp))
+            OutlinedTextField(
+                value = description,
+                onValueChange = onDescriptionChange,
+                label = { Text(stringResource(R.string.list_item_description)) },
+                singleLine = false,
+                maxLines = 3,
+                modifier = Modifier.fillMaxWidth()
+            )
+            Spacer(Modifier.height(20.dp))
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(12.dp)
+            ) {
+                TextButton(
+                    onClick = onDismiss,
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Text(stringResource(R.string.action_cancel))
+                }
+                PrimaryButton(
+                    text = stringResource(R.string.list_add_item_confirm),
+                    onClick = onConfirm,
+                    modifier = Modifier.weight(1f),
+                    enabled = name.isNotBlank()
+                )
+            }
+            Spacer(Modifier.height(8.dp))
+        }
+    }
+}

app/src/main/java/com/safebite/app/presentation/screen/lists/ListDetailViewModel.kt

@@ -256,6 +256,27 @@ class ListDetailViewModel @Inject constructor(
         }
     }
 
+    /** Crée un item avec photo et description. */
+    fun addCustomItemWithImage(name: String, note: String?, imageUri: String?) {
+        val trimmedName = name.trim()
+        if (trimmedName.isEmpty()) return
+        viewModelScope.launch {
+            val listId = _listIdFlow.value
+            val category = categoryEngine.detectCategory(trimmedName)
+            manageListUseCase.addItemToList(
+                listId,
+                ShoppingListItemEntity(
+                    listId = listId,
+                    productName = trimmedName,
+                    category = category,
+                    note = note?.trim()?.ifEmpty { null },
+                    imageUrl = imageUri,
+                    isChecked = false
+                )
+            )
+        }
+    }
+
     /**
      * Tap sur un article actif → marque comme acheté (déplace dans Recently Used).
      */

app/src/main/java/com/safebite/app/presentation/screen/result/ResultScreen.kt

@@ -5,6 +5,7 @@ import android.net.Uri
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -34,8 +35,10 @@ import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -44,6 +47,7 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
@@ -92,6 +96,8 @@ fun ResultScreen(
     viewModel: ResultViewModel = hiltViewModel()
 ) {
     val state by viewModel.state.collectAsStateWithLifecycle()
+    val lists by viewModel.lists.collectAsStateWithLifecycle()
+    var showListPicker by remember { mutableStateOf(false) }
     LaunchedEffect(barcode, fromOcr, ocrText) {
         if (fromOcr && !ocrText.isNullOrBlank()) {
             viewModel.analyzeOcrText(ocrText)
@@ -145,7 +151,19 @@ fun ResultScreen(
                 is UiState.Success -> ResultContent(
                     result = s.data,
                     onScanAgain = onScanAgain,
-                    onOcr = onOcr
+                    onOcr = onOcr,
+                    onAddToList = { showListPicker = true }
+                )
+            }
+
+            if (showListPicker) {
+                ListPickerBottomSheet(
+                    lists = lists,
+                    onSelect = { listId ->
+                        viewModel.addToList(listId)
+                        showListPicker = false
+                    },
+                    onDismiss = { showListPicker = false }
                 )
             }
         }
@@ -157,7 +175,8 @@ fun ResultScreen(
 private fun ResultContent(
     result: ScanResult,
     onScanAgain: () -> Unit,
-    onOcr: () -> Unit
+    onOcr: () -> Unit,
+    onAddToList: () -> Unit
 ) {
     var ingredientsExpanded by remember { mutableStateOf(false) }
     val context = LocalContext.current
@@ -284,6 +303,12 @@ private fun ResultContent(
                 color = MaterialTheme.colorScheme.onSurfaceVariant
             )
 
+            OutlinedActionButton(
+                text = stringResource(R.string.result_add_to_list),
+                onClick = onAddToList,
+                modifier = Modifier.fillMaxWidth()
+            )
+
             Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
                 OutlinedActionButton(
                     text = stringResource(R.string.action_read_ingredients),
@@ -618,3 +643,59 @@ private fun EcoScoreBadge(grade: String) {
         Text("🌿$upper", color = Color.White, fontWeight = FontWeight.Bold, style = MaterialTheme.typography.titleMedium)
     }
 }
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun ListPickerBottomSheet(
+    lists: List<com.safebite.app.data.local.database.entity.ShoppingListEntity>,
+    onSelect: (Long) -> Unit,
+    onDismiss: () -> Unit
+) {
+    ModalBottomSheet(
+        onDismissRequest = onDismiss,
+        sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 20.dp, vertical = 12.dp)
+        ) {
+            Text(
+                text = stringResource(R.string.result_choose_list),
+                style = MaterialTheme.typography.titleLarge,
+                fontWeight = FontWeight.Bold
+            )
+            Spacer(Modifier.height(12.dp))
+            if (lists.isEmpty()) {
+                Text(
+                    text = "Aucune liste disponible",
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            } else {
+                lists.forEach { list ->
+                    Row(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .clip(RoundedCornerShape(8.dp))
+                            .clickable { onSelect(list.id) }
+                            .padding(vertical = 12.dp, horizontal = 8.dp),
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text(
+                            text = list.name,
+                            style = MaterialTheme.typography.bodyLarge,
+                            modifier = Modifier.weight(1f)
+                        )
+                        Icon(
+                            imageVector = Icons.AutoMirrored.Filled.OpenInNew,
+                            contentDescription = null,
+                            tint = MaterialTheme.colorScheme.primary
+                        )
+                    }
+                }
+            }
+            Spacer(Modifier.height(16.dp))
+        }
+    }
+}

app/src/main/java/com/safebite/app/presentation/screen/result/ResultViewModel.kt

@@ -8,15 +8,20 @@ import com.safebite.app.domain.model.UserProfile
 import com.safebite.app.domain.repository.ProductFetchResult
 import com.safebite.app.domain.usecase.AnalyzeIngredientsTextUseCase
 import com.safebite.app.domain.usecase.AnalyzeProductUseCase
+import com.safebite.app.data.local.database.entity.ShoppingListItemEntity
 import com.safebite.app.domain.usecase.FetchProductUseCase
+import com.safebite.app.domain.usecase.GetShoppingListsUseCase
 import com.safebite.app.domain.usecase.ManageProfileUseCase
+import com.safebite.app.domain.usecase.ManageShoppingListUseCase
 import com.safebite.app.domain.usecase.SaveScanUseCase
 import com.safebite.app.presentation.common.util.UiState
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
@@ -26,12 +31,17 @@ class ResultViewModel @Inject constructor(
     private val analyzeProduct: AnalyzeProductUseCase,
     private val analyzeText: AnalyzeIngredientsTextUseCase,
     private val manageProfile: ManageProfileUseCase,
-    private val saveScan: SaveScanUseCase
+    private val saveScan: SaveScanUseCase,
+    private val getLists: GetShoppingListsUseCase,
+    private val manageList: ManageShoppingListUseCase
 ) : ViewModel() {
 
     private val _state = MutableStateFlow<UiState<ScanResult>>(UiState.Idle)
     val state: StateFlow<UiState<ScanResult>> = _state.asStateFlow()
 
+    val lists = getLists.observeActive()
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptyList())
+
     fun analyzeBarcode(barcode: String) = viewModelScope.launch {
         _state.value = UiState.Loading
         val profiles = resolveProfiles()
@@ -71,4 +81,21 @@ class ResultViewModel @Inject constructor(
             else -> all.filter { it.isDefault }.ifEmpty { all.take(1) }
         }
     }
+
+    fun addToList(listId: Long) = viewModelScope.launch {
+        val currentState = _state.value
+        if (currentState !is UiState.Success) return@launch
+        val result = currentState.data
+        val entity = ShoppingListItemEntity(
+            listId = listId,
+            barcode = result.product.barcode,
+            productName = result.product.name ?: result.product.barcode,
+            brand = result.product.brand,
+            imageUrl = result.product.imageUrl,
+            isChecked = false,
+            safetyStatus = result.safetyStatus.name,
+            allergenWarning = result.detectedAllergens.firstOrNull()?.allergenType?.displayNameFr
+        )
+        manageList.addItemToList(listId, entity)
+    }
 }

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

@@ -193,4 +193,15 @@
     <string name="allergen_lupin">Lupin</string>
     <string name="allergen_molluscs">Molluscs</string>
     <string name="allergen_celery">Celery</string>
+
+    <!-- List & Photo additions -->
+    <string name="result_add_to_list">Add to a list</string>
+    <string name="result_choose_list">Choose a list</string>
+    <string name="result_added_to_list">Product added to list</string>
+    <string name="list_add_photo">Add item</string>
+    <string name="list_take_photo">Take a photo</string>
+    <string name="list_pick_gallery">Pick from gallery</string>
+    <string name="list_item_name">Name</string>
+    <string name="list_item_description">Description</string>
+    <string name="list_add_item_confirm">Add</string>
 </resources>

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

@@ -306,4 +306,15 @@
     <string name="a11y_verdict_safe">Verdict : produit sûr pour tous les profils</string>
     <string name="a11y_verdict_warning">Verdict : attention, traces d\'allergènes possibles</string>
     <string name="a11y_verdict_danger">Verdict : danger, ne pas consommer pour %1$s</string>
+
+    <!-- List & Photo additions -->
+    <string name="result_add_to_list">Ajouter à une liste</string>
+    <string name="result_choose_list">Choisir une liste</string>
+    <string name="result_added_to_list">Produit ajouté à la liste</string>
+    <string name="list_add_photo">Ajouter un élément</string>
+    <string name="list_take_photo">Prendre une photo</string>
+    <string name="list_pick_gallery">Choisir dans la galerie</string>
+    <string name="list_item_name">Nom</string>
+    <string name="list_item_description">Description</string>
+    <string name="list_add_item_confirm">Ajouter</string>
 </resources>

version.properties

@@ -1,4 +1,4 @@
 MAJOR=1
-MINOR=7
+MINOR=8
-PATCH=1
+PATCH=0
-CODE=9
+CODE=10