0.3.0 - Filtering and Better Scales

app/build.gradle.kts

@@ -14,8 +14,8 @@ android {
         applicationId = "com.atridad.openclimb"
         minSdk = 31
         targetSdk = 35
-        versionCode = 2
+        versionCode = 3
-        versionName = "0.2.0"
+        versionName = "0.3.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/com/atridad/openclimb/data/model/ClimbType.kt

@@ -5,5 +5,13 @@ import kotlinx.serialization.Serializable
 @Serializable
 enum class ClimbType {
     ROPE,
-    BOULDER
+    BOULDER;
+    
+    /**
+     * Get the display name for the UI
+     */
+    fun getDisplayName(): String = when (this) {
+        ROPE -> "Rope"
+        BOULDER -> "Bouldering"
+    }
 }

app/src/main/java/com/atridad/openclimb/data/model/DifficultySystem.kt

@@ -4,23 +4,68 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 enum class DifficultySystem {
-    // Rope climbing systems
-    YDS,           // Yosemite Decimal System (5.1 - 5.15d)
-    FRENCH,        // French system (3 - 9c+)
-    UIAA,          // UIAA system (I - XII+)
-    BRITISH,       // British system (Mod - E11)
-    
     // Bouldering systems
     V_SCALE,       // V-Scale (VB - V17)
-    FONT,          // Fontainebleau (3 - 9A+)
+    FONT,          // Fontainebleau (3 - 8C+)
+    
+    // Rope climbing systems
+    YDS,           // Yosemite Decimal System (5.0 - 5.15d)
     
     // Custom system for gyms that use their own colors/naming
-    CUSTOM
+    CUSTOM;
+    
+    /**
+     * Get the display name for the UI
+     */
+    fun getDisplayName(): String = when (this) {
+        V_SCALE -> "V Scale"
+        FONT -> "Font Scale"
+        YDS -> "YDS (Yosemite)"
+        CUSTOM -> "Custom"
+    }
+    
+    /**
+     * Check if this system is for bouldering
+     */
+    fun isBoulderingSystem(): Boolean = when (this) {
+        V_SCALE, FONT -> true
+        YDS -> false
+        CUSTOM -> true // Custom is available for all
+    }
+    
+    /**
+     * Check if this system is for rope climbing
+     */
+    fun isRopeSystem(): Boolean = when (this) {
+        YDS -> true
+        V_SCALE, FONT -> false
+        CUSTOM -> true // Custom is available for all
+    }
+    
+    /**
+     * Get available grades for this difficulty system
+     */
+    fun getAvailableGrades(): List<String> = when (this) {
+        V_SCALE -> listOf("VB", "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7", "V8", "V9", "V10", "V11", "V12", "V13", "V14", "V15", "V16", "V17")
+        FONT -> listOf("3", "4A", "4B", "4C", "5A", "5B", "5C", "6A", "6A+", "6B", "6B+", "6C", "6C+", "7A", "7A+", "7B", "7B+", "7C", "7C+", "8A", "8A+", "8B", "8B+", "8C", "8C+")
+        YDS -> listOf("5.0", "5.1", "5.2", "5.3", "5.4", "5.5", "5.6", "5.7", "5.8", "5.9", "5.10a", "5.10b", "5.10c", "5.10d", "5.11a", "5.11b", "5.11c", "5.11d", "5.12a", "5.12b", "5.12c", "5.12d", "5.13a", "5.13b", "5.13c", "5.13d", "5.14a", "5.14b", "5.14c", "5.14d", "5.15a", "5.15b", "5.15c", "5.15d")
+        CUSTOM -> emptyList() // Custom allows free text input
+    }
+    
+    companion object {
+        /**
+         * Get all difficulty systems available for a specific climb type
+         */
+        fun getSystemsForClimbType(climbType: ClimbType): List<DifficultySystem> = when (climbType) {
+            ClimbType.BOULDER -> entries.filter { it.isBoulderingSystem() }
+            ClimbType.ROPE -> entries.filter { it.isRopeSystem() }
+        }
+    }
 }
 
 @Serializable
 data class DifficultyGrade(
     val system: DifficultySystem,
     val grade: String,
-    val numericValue: Int // For comparison and analytics
+    val numericValue: Int
 )

app/src/main/java/com/atridad/openclimb/ui/OpenClimbApp.kt

@@ -28,7 +28,6 @@ fun OpenClimbApp() {
     val navController = rememberNavController()
     val context = LocalContext.current
     val currentBackStackEntry by navController.currentBackStackEntryAsState()
-    val currentDestination = currentBackStackEntry?.destination?.route
     
     val database = remember { OpenClimbDatabase.getDatabase(context) }
     val repository = remember { ClimbRepository(database, context) }
@@ -247,17 +246,15 @@ fun OpenClimbBottomNavigation(navController: NavHostController) {
                 selected = isSelected,
                 onClick = {
                     navController.navigate(item.screen) {
-                        // Pop up to the start destination of the graph to
+                        // Clear the entire back stack and go to the selected tab's root screen
-                        // avoid building up a large stack of destinations
+                        popUpTo(0) {
-                        // on the back stack as users select items
+                            inclusive = true
-                        popUpTo(Screen.Sessions) {
-                            saveState = true
                         }
                         // Avoid multiple copies of the same destination when
                         // reselecting the same item
                         launchSingleTop = true
-                        // Restore state when reselecting a previously selected item
+                        // Don't restore state - always start fresh when switching tabs
-                        restoreState = true
+                        restoreState = false
                     }
                 }
             )

app/src/main/java/com/atridad/openclimb/ui/screens/AddEditScreens.kt

@@ -47,6 +47,34 @@ fun AddEditGymScreen(
     
     val isEditing = gymId != null
     
+    // Calculate available difficulty systems based on selected climb types
+    val availableDifficultySystems = if (selectedClimbTypes.isEmpty()) {
+        emptyList()
+    } else {
+        selectedClimbTypes.flatMap { climbType ->
+            DifficultySystem.getSystemsForClimbType(climbType)
+        }.distinct()
+    }
+    
+    // Reset selected difficulty systems when available systems change
+    LaunchedEffect(availableDifficultySystems) {
+        selectedDifficultySystems = selectedDifficultySystems.filter { it in availableDifficultySystems }.toSet()
+    }
+    
+    // Load existing gym data for editing
+    LaunchedEffect(gymId) {
+        if (gymId != null) {
+            val existingGym = viewModel.getGymById(gymId).first()
+            existingGym?.let { gym ->
+                name = gym.name
+                location = gym.location ?: ""
+                notes = gym.notes ?: ""
+                selectedClimbTypes = gym.supportedClimbTypes.toSet()
+                selectedDifficultySystems = gym.difficultySystems.toSet()
+            }
+        }
+    }
+    
     Scaffold(
         topBar = {
             TopAppBar(
@@ -59,20 +87,16 @@ fun AddEditGymScreen(
                 actions = {
                     TextButton(
                         onClick = {
-                            val gym = if (isEditing) {
+                            val gym = Gym.create(name, location, selectedClimbTypes.toList(), selectedDifficultySystems.toList(), notes = notes)
-                                Gym.create(name, location, selectedClimbTypes.toList(), selectedDifficultySystems.toList(), notes = notes)
-                            } else {
-                                Gym.create(name, location, selectedClimbTypes.toList(), selectedDifficultySystems.toList(), notes = notes)
-                            }
                             
                             if (isEditing) {
-                                viewModel.updateGym(gym)
+                                viewModel.updateGym(gym.copy(id = gymId!!))
                             } else {
                                 viewModel.addGym(gym)
                             }
                             onNavigateBack()
                         },
-                        enabled = name.isNotBlank() && selectedClimbTypes.isNotEmpty()
+                        enabled = name.isNotBlank() && selectedClimbTypes.isNotEmpty() && selectedDifficultySystems.isNotEmpty()
                     ) {
                         Text("Save")
                     }
@@ -142,7 +166,7 @@ fun AddEditGymScreen(
                                 onCheckedChange = null
                             )
                             Spacer(modifier = Modifier.width(8.dp))
-                            Text(climbType.name.lowercase().replaceFirstChar { it.uppercase() })
+                            Text(climbType.getDisplayName())
                         }
                     }
                 }
@@ -163,29 +187,38 @@ fun AddEditGymScreen(
                     
                     Spacer(modifier = Modifier.height(8.dp))
                     
-                    DifficultySystem.entries.forEach { system ->
+                    if (selectedClimbTypes.isEmpty()) {
-                        Row(
+                        Text(
-                            verticalAlignment = Alignment.CenterVertically,
+                            text = "Select climb types first to see available difficulty systems",
-                            modifier = Modifier
+                            style = MaterialTheme.typography.bodyMedium,
-                                .fillMaxWidth()
+                            color = MaterialTheme.colorScheme.onSurfaceVariant,
-                                .selectable(
+                            modifier = Modifier.padding(vertical = 8.dp)
-                                    selected = system in selectedDifficultySystems,
+                        )
-                                    onClick = {
+                    } else {
-                                        selectedDifficultySystems = if (system in selectedDifficultySystems) {
+                        availableDifficultySystems.forEach { system ->
-                                            selectedDifficultySystems - system
+                            Row(
-                                        } else {
+                                verticalAlignment = Alignment.CenterVertically,
-                                            selectedDifficultySystems + system
+                                modifier = Modifier
-                                        }
+                                    .fillMaxWidth()
-                                    },
+                                    .selectable(
-                                    role = Role.Checkbox
+                                        selected = system in selectedDifficultySystems,
+                                        onClick = {
+                                            selectedDifficultySystems = if (system in selectedDifficultySystems) {
+                                                selectedDifficultySystems - system
+                                            } else {
+                                                selectedDifficultySystems + system
+                                            }
+                                        },
+                                        role = Role.Checkbox
+                                    )
+                            ) {
+                                Checkbox(
+                                    checked = system in selectedDifficultySystems,
+                                    onCheckedChange = null
                                 )
-                        ) {
+                                Spacer(modifier = Modifier.width(8.dp))
-                            Checkbox(
+                                Text(system.getDisplayName())
-                                checked = system in selectedDifficultySystems,
+                            }
-                                onCheckedChange = null
-                            )
-                            Spacer(modifier = Modifier.width(8.dp))
-                            Text(system.name)
                         }
                     }
                 }
@@ -244,6 +277,8 @@ fun AddEditProblemScreen(
                 notes = p.notes ?: ""
                 isActive = p.isActive
                 imagePaths = p.imagePaths
+                // Set the selected gym for the existing problem
+                selectedGym = gyms.find { it.id == p.gymId }
             }
         }
     }
@@ -254,8 +289,39 @@ fun AddEditProblemScreen(
         }
     }
     
-    val availableDifficultySystems = selectedGym?.difficultySystems ?: DifficultySystem.entries.toList()
     val availableClimbTypes = selectedGym?.supportedClimbTypes ?: ClimbType.entries.toList()
+    val availableDifficultySystems = DifficultySystem.getSystemsForClimbType(selectedClimbType).filter { system ->
+        selectedGym?.difficultySystems?.contains(system) ?: true
+    }
+    
+    // Auto-select climb type if there's only one available
+    LaunchedEffect(availableClimbTypes) {
+        if (availableClimbTypes.size == 1 && selectedClimbType != availableClimbTypes.first()) {
+            selectedClimbType = availableClimbTypes.first()
+        }
+    }
+    
+    // Auto-select or reset difficulty system based on climb type
+    LaunchedEffect(selectedClimbType, availableDifficultySystems) {
+        when {
+            // If current system is not compatible, select the first available one
+            selectedDifficultySystem !in availableDifficultySystems -> {
+                selectedDifficultySystem = availableDifficultySystems.firstOrNull() ?: DifficultySystem.CUSTOM
+            }
+            // If there's only one available system and nothing is selected, auto-select it
+            availableDifficultySystems.size == 1 && selectedDifficultySystem != availableDifficultySystems.first() -> {
+                selectedDifficultySystem = availableDifficultySystems.first()
+            }
+        }
+    }
+    
+    // Reset grade when difficulty system changes (unless it's a valid grade for the new system)
+    LaunchedEffect(selectedDifficultySystem) {
+        val availableGrades = selectedDifficultySystem.getAvailableGrades()
+        if (availableGrades.isNotEmpty() && difficultyGrade !in availableGrades) {
+            difficultyGrade = ""
+        }
+    }
     
     Scaffold(
         topBar = {
@@ -437,7 +503,7 @@ fun AddEditProblemScreen(
                                 availableClimbTypes.forEach { climbType ->
                                     FilterChip(
                                         onClick = { selectedClimbType = climbType },
-                                        label = { Text(climbType.name.lowercase().replaceFirstChar { it.uppercase() }) },
+                                        label = { Text(climbType.getDisplayName()) },
                                         selected = selectedClimbType == climbType
                                     )
                                 }
@@ -476,7 +542,7 @@ fun AddEditProblemScreen(
                                 items(availableDifficultySystems) { system ->
                                     FilterChip(
                                         onClick = { selectedDifficultySystem = system },
-                                        label = { Text(system.name) },
+                                        label = { Text(system.getDisplayName()) },
                                         selected = selectedDifficultySystem == system
                                     )
                                 }
@@ -484,23 +550,51 @@ fun AddEditProblemScreen(
                             
                             Spacer(modifier = Modifier.height(8.dp))
                             
-                            OutlinedTextField(
+                            if (selectedDifficultySystem == DifficultySystem.CUSTOM) {
-                                value = difficultyGrade,
+                                OutlinedTextField(
-                                onValueChange = { difficultyGrade = it },
+                                    value = difficultyGrade,
-                                label = { Text("Grade *") },
+                                    onValueChange = { difficultyGrade = it },
-                                modifier = Modifier.fillMaxWidth(),
+                                    label = { Text("Grade *") },
-                                singleLine = true,
+                                    modifier = Modifier.fillMaxWidth(),
-                                placeholder = { 
+                                    singleLine = true,
-                                    Text(when (selectedDifficultySystem) {
+                                    placeholder = { Text("Enter custom grade") }
-                                        DifficultySystem.V_SCALE -> "e.g., V0, V4, V10"
+                                )
-                                        DifficultySystem.FONT -> "e.g., 3, 6A+, 8B"
+                            } else {
-                                        DifficultySystem.YDS -> "e.g., 5.8, 5.12a"
+                                var expanded by remember { mutableStateOf(false) }
-                                        DifficultySystem.FRENCH -> "e.g., 6a, 7c+"
+                                val availableGrades = selectedDifficultySystem.getAvailableGrades()
-                                        DifficultySystem.CUSTOM -> "Custom grade"
+                                
-                                        else -> "Enter grade"
+                                ExposedDropdownMenuBox(
-                                    }) 
+                                    expanded = expanded,
+                                    onExpandedChange = { expanded = !expanded },
+                                    modifier = Modifier.fillMaxWidth()
+                                ) {
+                                    OutlinedTextField(
+                                        value = difficultyGrade,
+                                        onValueChange = { },
+                                        readOnly = true,
+                                        label = { Text("Grade *") },
+                                        trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
+                                        colors = ExposedDropdownMenuDefaults.outlinedTextFieldColors(),
+                                        modifier = Modifier
+                                            .menuAnchor()
+                                            .fillMaxWidth()
+                                    )
+                                    ExposedDropdownMenu(
+                                        expanded = expanded,
+                                        onDismissRequest = { expanded = false }
+                                    ) {
+                                        availableGrades.forEach { grade ->
+                                            DropdownMenuItem(
+                                                text = { Text(grade) },
+                                                onClick = {
+                                                    difficultyGrade = grade
+                                                    expanded = false
+                                                }
+                                            )
+                                        }
+                                    }
                                 }
-                            )
+                            }
                         }
                     }
                 }
@@ -617,6 +711,19 @@ fun AddEditSessionScreen(
     var attempts by remember { mutableStateOf(listOf<AttemptInput>()) }
     var showAddAttemptDialog by remember { mutableStateOf(false) }
     
+    // Load existing session data for editing
+    LaunchedEffect(sessionId) {
+        if (sessionId != null) {
+            val existingSession = viewModel.getSessionById(sessionId).first()
+            existingSession?.let { session ->
+                selectedGym = gyms.find { it.id == session.gymId }
+                sessionDate = session.date.split("T")[0] // Extract date part
+                duration = session.duration?.toString() ?: ""
+                sessionNotes = session.notes ?: ""
+            }
+        }
+    }
+    
     LaunchedEffect(gymId, gyms) {
         if (gymId != null && selectedGym == null) {
             selectedGym = gyms.find { it.id == gymId }
@@ -830,7 +937,7 @@ fun AddEditSessionScreen(
                                 
                                 problem?.difficulty?.let { difficulty ->
                                     Text(
-                                        text = "${difficulty.system.name}: ${difficulty.grade}",
+                                        text = "${difficulty.system.getDisplayName()}: ${difficulty.grade}",
                                         style = MaterialTheme.typography.bodySmall,
                                         color = MaterialTheme.colorScheme.primary
                                     )
@@ -956,7 +1063,7 @@ fun AddAttemptDialog(
                                         fontWeight = FontWeight.Medium
                                     )
                                     Text(
-                                        text = "${problem.difficulty.system.name}: ${problem.difficulty.grade}",
+                                        text = "${problem.difficulty.system.getDisplayName()}: ${problem.difficulty.grade}",
                                         style = MaterialTheme.typography.bodySmall,
                                         color = MaterialTheme.colorScheme.primary
                                     )

app/src/main/java/com/atridad/openclimb/ui/screens/DetailScreens.kt

@@ -481,7 +481,7 @@ fun ProblemDetailScreen(
                             Column {
                                 problem?.let { p ->
                                     Text(
-                                        text = "${p.difficulty.system.name}: ${p.difficulty.grade}",
+                                        text = "${p.difficulty.system.getDisplayName()}: ${p.difficulty.grade}",
                                         style = MaterialTheme.typography.titleLarge,
                                         color = MaterialTheme.colorScheme.primary,
                                         fontWeight = FontWeight.Bold
@@ -490,7 +490,7 @@ fun ProblemDetailScreen(
                                 
                                 problem?.let { p ->
                                     Text(
-                                        text = p.climbType.name.lowercase().replaceFirstChar { it.uppercase() },
+                                        text = p.climbType.getDisplayName(),
                                         style = MaterialTheme.typography.bodyMedium,
                                         color = MaterialTheme.colorScheme.onSurfaceVariant
                                     )
@@ -1314,7 +1314,7 @@ fun SessionAttemptCard(
                     )
                     
                     Text(
-                        text = "${problem.difficulty.system.name}: ${problem.difficulty.grade}",
+                        text = "${problem.difficulty.system.getDisplayName()}: ${problem.difficulty.grade}",
                         style = MaterialTheme.typography.bodySmall,
                         color = MaterialTheme.colorScheme.primary
                     )
@@ -1406,6 +1406,39 @@ fun EnhancedAddAttemptDialog(
     var selectedClimbType by remember { mutableStateOf(ClimbType.BOULDER) }
     var selectedDifficultySystem by remember { mutableStateOf(gym.difficultySystems.firstOrNull() ?: DifficultySystem.V_SCALE) }
     
+    // Auto-select climb type if there's only one available
+    LaunchedEffect(gym.supportedClimbTypes) {
+        if (gym.supportedClimbTypes.size == 1 && selectedClimbType != gym.supportedClimbTypes.first()) {
+            selectedClimbType = gym.supportedClimbTypes.first()
+        }
+    }
+    
+    // Auto-select difficulty system if there's only one available for the selected climb type
+    LaunchedEffect(selectedClimbType, gym.difficultySystems) {
+        val availableSystems = DifficultySystem.getSystemsForClimbType(selectedClimbType).filter { system ->
+            gym.difficultySystems.contains(system)
+        }
+        
+        when {
+            // If current system is not compatible, select the first available one
+            selectedDifficultySystem !in availableSystems -> {
+                selectedDifficultySystem = availableSystems.firstOrNull() ?: gym.difficultySystems.firstOrNull() ?: DifficultySystem.CUSTOM
+            }
+            // If there's only one available system, auto-select it
+            availableSystems.size == 1 && selectedDifficultySystem != availableSystems.first() -> {
+                selectedDifficultySystem = availableSystems.first()
+            }
+        }
+    }
+    
+    // Reset grade when difficulty system changes
+    LaunchedEffect(selectedDifficultySystem) {
+        val availableGrades = selectedDifficultySystem.getAvailableGrades()
+        if (availableGrades.isNotEmpty() && newProblemGrade !in availableGrades) {
+            newProblemGrade = ""
+        }
+    }
+    
     Dialog(onDismissRequest = onDismiss) {
         Card(
             modifier = Modifier
@@ -1509,7 +1542,7 @@ fun EnhancedAddAttemptDialog(
                                             )
                                             Spacer(modifier = Modifier.height(4.dp))
                                             Text(
-                                                text = "${problem.difficulty.system.name}: ${problem.difficulty.grade}",
+                                                text = "${problem.difficulty.system.getDisplayName()}: ${problem.difficulty.grade}",
                                                 style = MaterialTheme.typography.bodyMedium,
                                                 color = if (isSelected) 
                                                     MaterialTheme.colorScheme.onSurface.copy(alpha = 0.8f)
@@ -1584,7 +1617,7 @@ fun EnhancedAddAttemptDialog(
                                         onClick = { selectedClimbType = climbType },
                                         label = { 
                                             Text(
-                                                climbType.name.lowercase().replaceFirstChar { it.uppercase() },
+                                                climbType.getDisplayName(),
                                                 fontWeight = FontWeight.Medium
                                             ) 
                                         },
@@ -1611,12 +1644,15 @@ fun EnhancedAddAttemptDialog(
                             LazyRow(
                                 horizontalArrangement = Arrangement.spacedBy(8.dp)
                             ) {
-                                items(gym.difficultySystems) { system ->
+                                val availableSystems = DifficultySystem.getSystemsForClimbType(selectedClimbType).filter { system ->
+                                    gym.difficultySystems.contains(system)
+                                }
+                                items(availableSystems) { system ->
                                     FilterChip(
                                         onClick = { selectedDifficultySystem = system },
                                         label = { 
                                             Text(
-                                                system.name,
+                                                system.getDisplayName(),
                                                 fontWeight = FontWeight.Medium
                                             ) 
                                         },
@@ -1630,31 +1666,63 @@ fun EnhancedAddAttemptDialog(
                             }
                         }
                         
-                        OutlinedTextField(
+                        if (selectedDifficultySystem == DifficultySystem.CUSTOM) {
-                            value = newProblemGrade,
+                            OutlinedTextField(
-                            onValueChange = { newProblemGrade = it },
+                                value = newProblemGrade,
-                            label = { Text("Grade *") },
+                                onValueChange = { newProblemGrade = it },
-                            placeholder = { 
+                                label = { Text("Grade *") },
-                                Text(when (selectedDifficultySystem) {
+                                placeholder = { Text("Enter custom grade") },
-                                    DifficultySystem.V_SCALE -> "e.g., V0, V4, V10"
+                                modifier = Modifier.fillMaxWidth(),
-                                    DifficultySystem.FONT -> "e.g., 3, 6A+, 8B"
+                                singleLine = true,
-                                    DifficultySystem.YDS -> "e.g., 5.8, 5.12a"
+                                colors = OutlinedTextFieldDefaults.colors(
-                                    DifficultySystem.FRENCH -> "e.g., 6a, 7c+"
+                                    focusedBorderColor = MaterialTheme.colorScheme.primary,
-                                    DifficultySystem.CUSTOM -> "Custom grade"
+                                    unfocusedBorderColor = MaterialTheme.colorScheme.outline
-                                    else -> "Enter grade"
+                                ),
-                                }) 
+                                isError = newProblemGrade.isBlank(),
-                            },
+                                supportingText = if (newProblemGrade.isBlank()) {
-                            modifier = Modifier.fillMaxWidth(),
+                                    { Text("Grade is required", color = MaterialTheme.colorScheme.error) }
-                            singleLine = true,
+                                } else null
-                            colors = OutlinedTextFieldDefaults.colors(
+                            )
-                                focusedBorderColor = MaterialTheme.colorScheme.primary,
+                        } else {
-                                unfocusedBorderColor = MaterialTheme.colorScheme.outline
+                            var expanded by remember { mutableStateOf(false) }
-                            ),
+                            val availableGrades = selectedDifficultySystem.getAvailableGrades()
-                            isError = newProblemGrade.isBlank(),
+                            
-                            supportingText = if (newProblemGrade.isBlank()) {
+                            ExposedDropdownMenuBox(
-                                { Text("Grade is required", color = MaterialTheme.colorScheme.error) }
+                                expanded = expanded,
-                            } else null
+                                onExpandedChange = { expanded = !expanded },
-                        )
+                                modifier = Modifier.fillMaxWidth()
+                            ) {
+                                OutlinedTextField(
+                                    value = newProblemGrade,
+                                    onValueChange = { },
+                                    readOnly = true,
+                                    label = { Text("Grade *") },
+                                    trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
+                                    colors = ExposedDropdownMenuDefaults.outlinedTextFieldColors(),
+                                    modifier = Modifier
+                                        .menuAnchor()
+                                        .fillMaxWidth(),
+                                    isError = newProblemGrade.isBlank(),
+                                    supportingText = if (newProblemGrade.isBlank()) {
+                                        { Text("Grade is required", color = MaterialTheme.colorScheme.error) }
+                                    } else null
+                                )
+                                ExposedDropdownMenu(
+                                    expanded = expanded,
+                                    onDismissRequest = { expanded = false }
+                                ) {
+                                    availableGrades.forEach { grade ->
+                                        DropdownMenuItem(
+                                            text = { Text(grade) },
+                                            onClick = {
+                                                newProblemGrade = grade
+                                                expanded = false
+                                            }
+                                        )
+                                    }
+                                }
+                            }
+                        }
                     }
                         }
                     }

app/src/main/java/com/atridad/openclimb/ui/screens/GymsScreen.kt

@@ -109,7 +109,7 @@ fun GymCard(
                     AssistChip(
                         onClick = { },
                         label = { 
-                            Text(climbType.name.lowercase().replaceFirstChar { it.uppercase() }) 
+                            Text(climbType.getDisplayName()) 
                         },
                         modifier = Modifier.padding(end = 4.dp)
                     )
@@ -119,7 +119,7 @@ fun GymCard(
             if (gym.difficultySystems.isNotEmpty()) {
                 Spacer(modifier = Modifier.height(4.dp))
                 Text(
-                    text = "Systems: ${gym.difficultySystems.joinToString(", ") { it.name }}",
+                    text = "Systems: ${gym.difficultySystems.joinToString(", ") { it.getDisplayName() }}",
                     style = MaterialTheme.typography.bodySmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant
                 )

app/src/main/java/com/atridad/openclimb/ui/screens/ProblemsScreen.kt

@@ -2,6 +2,7 @@ package com.atridad.openclimb.ui.screens
 
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyRow
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
@@ -14,6 +15,8 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import com.atridad.openclimb.R
+import com.atridad.openclimb.data.model.ClimbType
+import com.atridad.openclimb.data.model.Gym
 import com.atridad.openclimb.data.model.Problem
 import com.atridad.openclimb.ui.components.FullscreenImageViewer
 import com.atridad.openclimb.ui.components.ImageDisplay
@@ -32,6 +35,17 @@ fun ProblemsScreen(
     var selectedImagePaths by remember { mutableStateOf<List<String>>(emptyList()) }
     var selectedImageIndex by remember { mutableStateOf(0) }
     
+    // Filter state
+    var selectedClimbType by remember { mutableStateOf<ClimbType?>(null) }
+    var selectedGym by remember { mutableStateOf<Gym?>(null) }
+    
+    // Apply filters
+    val filteredProblems = problems.filter { problem ->
+        val climbTypeMatch = selectedClimbType?.let { it == problem.climbType } ?: true
+        val gymMatch = selectedGym?.let { it.id == problem.gymId } ?: true
+        climbTypeMatch && gymMatch
+    }
+    
     Column(
         modifier = Modifier
             .fillMaxSize()
@@ -57,16 +71,113 @@ fun ProblemsScreen(
         
         Spacer(modifier = Modifier.height(16.dp))
         
-        if (problems.isEmpty()) {
+        // Filters Section
+        if (problems.isNotEmpty()) {
+            Card(
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Column(
+                    modifier = Modifier.padding(16.dp)
+                ) {
+                    Text(
+                        text = "Filters",
+                        style = MaterialTheme.typography.titleMedium,
+                        fontWeight = FontWeight.Bold
+                    )
+                    
+                    Spacer(modifier = Modifier.height(12.dp))
+                    
+                    // Climb Type Filter
+                    Text(
+                        text = "Climb Type",
+                        style = MaterialTheme.typography.bodyMedium,
+                        fontWeight = FontWeight.Medium
+                    )
+                    
+                    Spacer(modifier = Modifier.height(8.dp))
+                    
+                    LazyRow(
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        item {
+                            FilterChip(
+                                onClick = { selectedClimbType = null },
+                                label = { Text("All Types") },
+                                selected = selectedClimbType == null
+                            )
+                        }
+                        items(ClimbType.entries) { climbType ->
+                            FilterChip(
+                                onClick = { selectedClimbType = climbType },
+                                label = { Text(climbType.getDisplayName()) },
+                                selected = selectedClimbType == climbType
+                            )
+                        }
+                    }
+                    
+                    Spacer(modifier = Modifier.height(12.dp))
+                    
+                    // Gym Filter
+                    Text(
+                        text = "Gym",
+                        style = MaterialTheme.typography.bodyMedium,
+                        fontWeight = FontWeight.Medium
+                    )
+                    
+                    Spacer(modifier = Modifier.height(8.dp))
+                    
+                    LazyRow(
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        item {
+                            FilterChip(
+                                onClick = { selectedGym = null },
+                                label = { Text("All Gyms") },
+                                selected = selectedGym == null
+                            )
+                        }
+                        items(gyms) { gym ->
+                            FilterChip(
+                                onClick = { selectedGym = gym },
+                                label = { Text(gym.name) },
+                                selected = selectedGym?.id == gym.id
+                            )
+                        }
+                    }
+                    
+                    // Filter result count
+                    if (selectedClimbType != null || selectedGym != null) {
+                        Spacer(modifier = Modifier.height(12.dp))
+                        Text(
+                            text = "Showing ${filteredProblems.size} of ${problems.size} problems",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                }
+            }
+            
+            Spacer(modifier = Modifier.height(16.dp))
+        }
+        
+        if (filteredProblems.isEmpty()) {
             EmptyStateMessage(
-                title = if (gyms.isEmpty()) "No Gyms Available" else "No Problems Yet",
+                title = if (problems.isEmpty()) {
-                message = if (gyms.isEmpty()) "Add a gym first to start tracking problems and routes!" else "Start tracking your favorite problems and routes!",
+                    if (gyms.isEmpty()) "No Gyms Available" else "No Problems Yet"
+                } else {
+                    "No Problems Match Filters"
+                },
+                message = if (problems.isEmpty()) {
+                    if (gyms.isEmpty()) "Add a gym first to start tracking problems and routes!" else "Start tracking your favorite problems and routes!"
+                } else {
+                    "Try adjusting your filters to see more problems."
+                },
                 onActionClick = { },
                 actionText = ""
             )
         } else {
             LazyColumn {
-                items(problems) { problem ->
+                items(filteredProblems) { problem ->
                     ProblemCard(
                         problem = problem,
                         gymName = gyms.find { it.id == problem.gymId }?.name ?: "Unknown Gym",
@@ -138,7 +249,7 @@ fun ProblemCard(
                     )
                     
                     Text(
-                        text = problem.climbType.name.lowercase().replaceFirstChar { it.uppercase() },
+                        text = problem.climbType.getDisplayName(),
                         style = MaterialTheme.typography.bodySmall,
                         color = MaterialTheme.colorScheme.onSurfaceVariant
                     )