implement DailyReviewScreen and add support for "due today only" exercise configuration

app/src/main/java/eu/gaudian/translator/view/Navigation.kt

@@ -58,6 +58,7 @@ object NavigationRoutes {
     const val NEW_WORD_REVIEW = "new_word_review"
     const val VOCABULARY_DETAIL = "vocabulary_detail"
     const val START_EXERCISE = "start_exercise"
+    const val START_EXERCISE_DAILY = "start_exercise_daily"
     const val CATEGORY_DETAIL = "category_detail"
     const val CATEGORY_LIST = "category_list_screen"
     const val STATS_VOCABULARY_HEATMAP = "stats/vocabulary_heatmap"
@@ -182,7 +183,16 @@ fun AppNavHost(
             val categoryId = categoryIdString?.toIntOrNull()
             StartExerciseScreen(
                 navController = navController,
-                preselectedCategoryId = categoryId
+                preselectedCategoryId = categoryId,
+                dueTodayOnly = false
+            )
+        }
+
+        composable(NavigationRoutes.START_EXERCISE_DAILY) {
+            StartExerciseScreen(
+                navController = navController,
+                preselectedCategoryId = null,
+                dueTodayOnly = true
             )
         }
 

app/src/main/java/eu/gaudian/translator/view/exercises/StartExerciseScreen.kt

@@ -77,6 +77,7 @@ import kotlinx.coroutines.launch
 fun StartExerciseScreen(
     navController: NavHostController,
     preselectedCategoryId: Int? = null,
+    dueTodayOnly: Boolean = false,
     modifier: Modifier = Modifier
 ) {
     val activity = androidx.compose.ui.platform.LocalContext.current.findActivity()
@@ -84,6 +85,15 @@ fun StartExerciseScreen(
     val categoryViewModel: CategoryViewModel = hiltViewModel(viewModelStoreOwner = activity)
     val exerciseViewModel: VocabularyExerciseViewModel = hiltViewModel(viewModelStoreOwner = activity)
 
+    // Initialize exercise config with dueTodayOnly if specified
+    androidx.compose.runtime.LaunchedEffect(dueTodayOnly) {
+        if (dueTodayOnly) {
+            exerciseViewModel.updatePendingExerciseConfig(
+                exerciseViewModel.pendingExerciseConfig.value.copy(dueTodayOnly = true)
+            )
+        }
+    }
+
     val exerciseConfig by exerciseViewModel.pendingExerciseConfig.collectAsState()
     val allCategories by categoryViewModel.categories.collectAsState(initial = emptyList())
     var selectedLanguagePairs by remember { mutableStateOf<List<Pair<Language, Language>>>(emptyList()) }

app/src/main/java/eu/gaudian/translator/view/home/DailyReviewScreen.kt

@@ -0,0 +1,168 @@
+package eu.gaudian.translator.view.home
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+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.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.PlayArrow
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.navigation.NavHostController
+import eu.gaudian.translator.R
+import eu.gaudian.translator.utils.findActivity
+import eu.gaudian.translator.view.NavigationRoutes
+import eu.gaudian.translator.view.composable.AppButton
+import eu.gaudian.translator.view.composable.AppScaffold
+import eu.gaudian.translator.view.composable.AppTopAppBar
+import eu.gaudian.translator.view.library.VocabularyCard
+import eu.gaudian.translator.viewmodel.LanguageViewModel
+import eu.gaudian.translator.viewmodel.VocabularyViewModel
+
+@Composable
+fun DailyReviewScreen(
+    navController: NavHostController,
+    modifier: Modifier = Modifier
+) {
+    val context = LocalContext.current
+    val activity = context.findActivity()
+    val vocabularyViewModel: VocabularyViewModel = hiltViewModel(viewModelStoreOwner = activity)
+    val languageViewModel: LanguageViewModel = hiltViewModel(viewModelStoreOwner = activity)
+
+    val dueTodayItems by vocabularyViewModel.dueTodayItems.collectAsStateWithLifecycle(initialValue = emptyList())
+    val allLanguages by languageViewModel.allLanguages.collectAsStateWithLifecycle(initialValue = emptyList())
+    val listState = rememberLazyListState()
+
+    AppScaffold(
+        topBar = {
+            AppTopAppBar(
+                title = stringResource(R.string.label_daily_review),
+                onNavigateBack = { navController.popBackStack() }
+            )
+        },
+        modifier = modifier.fillMaxSize()
+    ) { paddingValues ->
+        if (dueTodayItems.isEmpty()) {
+            Box(
+                modifier = Modifier
+                    .padding(paddingValues)
+                    .fillMaxSize(),
+                contentAlignment = Alignment.Center
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(32.dp),
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Image(
+                        modifier = Modifier.size(200.dp),
+                        painter = painterResource(id = R.drawable.ic_nothing_found),
+                        contentDescription = null
+                    )
+                    Spacer(modifier = Modifier.height(16.dp))
+                    Text(
+                        text = stringResource(R.string.no_items_due_for_review),
+                        style = MaterialTheme.typography.bodyLarge,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        textAlign = TextAlign.Center
+                    )
+                }
+            }
+        } else {
+            Box(modifier = Modifier.fillMaxSize()) {
+                LazyColumn(
+                    state = listState,
+                    modifier = Modifier
+                        .fillMaxSize(),
+                    verticalArrangement = Arrangement.spacedBy(16.dp),
+                    contentPadding = PaddingValues(16.dp)
+                ) {
+                    items(
+                        items = dueTodayItems,
+                        key = { it.id }
+                    ) { item ->
+                        VocabularyCard(
+                            item = item,
+                            allLanguages = allLanguages,
+                            isSelected = false,
+                            onItemClick = {
+                                vocabularyViewModel.setNavigationContext(dueTodayItems, item.id)
+                                navController.navigate("${NavigationRoutes.VOCABULARY_DETAIL}/${item.id}")
+                            },
+                            onItemLongClick = { },
+                            onDeleteClick = { }
+                        )
+                    }
+                    // Add spacing at the bottom for the button
+                    item {
+                        Spacer(modifier = Modifier.height(80.dp))
+                    }
+                }
+
+                // Start Exercise Button (fixed at bottom)
+                Box(
+                    modifier = Modifier
+                        .align(Alignment.BottomCenter)
+                        .fillMaxWidth()
+                        .padding(paddingValues)
+                        .padding(24.dp)
+                ) {
+                    AppButton(
+                        onClick = {
+                            navController.navigate(NavigationRoutes.START_EXERCISE_DAILY)
+                        },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(56.dp),
+                        enabled = dueTodayItems.isNotEmpty(),
+                        shape = RoundedCornerShape(28.dp)
+                    ) {
+                        Row(
+                            horizontalArrangement = Arrangement.Center,
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Text(
+                                text = stringResource(R.string.label_start_exercise_2d, dueTodayItems.size),
+                                style = MaterialTheme.typography.titleMedium,
+                                fontWeight = FontWeight.Bold
+                            )
+                            Spacer(modifier = Modifier.width(8.dp))
+                            Icon(
+                                imageVector = Icons.Default.PlayArrow,
+                                contentDescription = stringResource(R.string.cd_play),
+                                modifier = Modifier.size(20.dp)
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/eu/gaudian/translator/view/vocabulary/VocabularyCardHost.kt

@@ -7,7 +7,6 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 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.layout.width
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -85,7 +84,6 @@ fun VocabularyCardHost(
     AppScaffold(
         topBar = {
             AppTopAppBar(
-                modifier = Modifier.height(56.dp),
                 title = stringResource(R.string.item_details),
                 onNavigateBack = { navController.popBackStack() },
                 actions = {

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

@@ -450,6 +450,7 @@
     <string name="no_models_configured">No Models Configured</string>
     <string name="no_models_found">No models found</string>
     <string name="no_new_vocabulary_to_sort">No New Vocabulary to Sort</string>
+    <string name="no_items_due_for_review">No items due for review today. Great job!</string>
     <string name="no_vocabulary_items_found_perhaps_try_changing_the_filters">No vocabulary items found. Perhaps try changing the filters?</string>
 
     <string name="not_available">Not available</string>