policy:time related

.kotlin/errors/errors-1770004718940.log

@@ -0,0 +1,35 @@
+kotlin version: 2.3.0
+error message: Incremental compilation failed: /home/androidlover5842/AndroidStudioProjects/TrisolarisPMS/app/build/kotlin/compileDebugKotlin/classpath-snapshot/shrunk-classpath-snapshot.bin (No such file or directory)
+java.io.FileNotFoundException: /home/androidlover5842/AndroidStudioProjects/TrisolarisPMS/app/build/kotlin/compileDebugKotlin/classpath-snapshot/shrunk-classpath-snapshot.bin (No such file or directory)
+	at java.base/java.io.FileInputStream.open0(Native Method)
+	at java.base/java.io.FileInputStream.open(Unknown Source)
+	at java.base/java.io.FileInputStream.<init>(Unknown Source)
+	at org.jetbrains.kotlin.incremental.storage.ExternalizersKt.loadFromFile(externalizers.kt:184)
+	at org.jetbrains.kotlin.incremental.snapshots.LazyClasspathSnapshot.getSavedShrunkClasspathAgainstPreviousLookups(LazyClasspathSnapshot.kt:86)
+	at org.jetbrains.kotlin.incremental.classpathDiff.ClasspathSnapshotShrinkerKt.shrinkAndSaveClasspathSnapshot(ClasspathSnapshotShrinker.kt:267)
+	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.performWorkAfterCompilation(IncrementalJvmCompilerRunner.kt:76)
+	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.performWorkAfterCompilation(IncrementalJvmCompilerRunner.kt:23)
+	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileImpl(IncrementalCompilerRunner.kt:420)
+	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.tryCompileIncrementally$lambda$0$compile(IncrementalCompilerRunner.kt:249)
+	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.tryCompileIncrementally(IncrementalCompilerRunner.kt:267)
+	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:119)
+	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execIncrementalCompiler(CompileServiceImpl.kt:684)
+	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execIncrementalCompiler(CompileServiceImpl.kt:94)
+	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1810)
+	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
+	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
+	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Unknown Source)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Unknown Source)
+	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
+	at java.rmi/sun.rmi.transport.Transport.serviceCall(Unknown Source)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(Unknown Source)
+	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
+	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
+	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
+	at java.base/java.lang.Thread.run(Unknown Source)
+
+

AGENTS.md

@@ -543,6 +543,7 @@ GET /properties/{propertyId}/bookings/{bookingId}/balance
 ### Required project structure (current baseline)
 
 - `core/` -> cross-cutting business primitives/policies (e.g., auth policy, role enum).
+- `core/viewmodel/` -> shared ViewModel execution helpers (loading/error wrappers, common request runners).
 - `data/api/core/` -> API client, constants, token providers, aggregated API service.
 - `data/api/service/` -> Retrofit endpoint interfaces only.
 - `data/api/model/` -> DTO/request/response models.
@@ -558,6 +559,9 @@ GET /properties/{propertyId}/bookings/{bookingId}/balance
 5. Keep UI dumb: consume state and callbacks; avoid business rules in composables.
 6. If navigation changes, update `ui/navigation` only (single source of truth).
 7. Before finishing, remove any newly introduced duplication and compile-check.
+8. If 2+ ViewModels repeat loading/error coroutine flow, extract/use shared helper in `core/viewmodel`.
+9. If Add/Edit screens differ only by initialization + submit callback, extract a feature-local shared form screen.
+10. Prefer dedupe/organization improvements even if net LOC does not decrease, as long as behavior remains unchanged.
 
 ### PR/refactor acceptance checklist
 

app/src/main/java/com/android/trisolarispms/core/auth/AuthzPolicy.kt

@@ -18,6 +18,10 @@ class AuthzPolicy(
 
     fun canManageRazorpaySettings(propertyId: String): Boolean = hasRole(propertyId, Role.ADMIN)
 
+    fun canManageCancellationPolicy(propertyId: String): Boolean = hasRole(propertyId, Role.ADMIN)
+
+    fun canManageBillingPolicy(propertyId: String): Boolean = hasRole(propertyId, Role.ADMIN)
+
     fun canDeleteCashPayment(propertyId: String): Boolean = hasRole(propertyId, Role.ADMIN)
 
     fun canAddBookingPayment(propertyId: String): Boolean =

app/src/main/java/com/android/trisolarispms/data/api/core/ApiService.kt

@@ -2,7 +2,9 @@ package com.android.trisolarispms.data.api.core
 
 import com.android.trisolarispms.data.api.service.AmenityApi
 import com.android.trisolarispms.data.api.service.AuthApi
+import com.android.trisolarispms.data.api.service.BillingPolicyApi
 import com.android.trisolarispms.data.api.service.BookingApi
+import com.android.trisolarispms.data.api.service.CancellationPolicyApi
 import com.android.trisolarispms.data.api.service.CardApi
 import com.android.trisolarispms.data.api.service.GuestApi
 import com.android.trisolarispms.data.api.service.GuestDocumentApi
@@ -20,6 +22,7 @@ import com.android.trisolarispms.data.api.service.UserAdminApi
 
 interface ApiService :
     AuthApi,
+    BillingPolicyApi,
     PropertyApi,
     RoomTypeApi,
     RoomApi,
@@ -35,4 +38,5 @@ interface ApiService :
     AmenityApi,
     RatePlanApi,
     RazorpaySettingsApi,
+    CancellationPolicyApi,
     UserAdminApi

app/src/main/java/com/android/trisolarispms/data/api/model/BillingPolicyModels.kt

@@ -0,0 +1,12 @@
+package com.android.trisolarispms.data.api.model
+
+data class BillingPolicyRequest(
+    val billingCheckinTime: String,
+    val billingCheckoutTime: String
+)
+
+data class BillingPolicyResponse(
+    val propertyId: String? = null,
+    val billingCheckinTime: String? = null,
+    val billingCheckoutTime: String? = null
+)

app/src/main/java/com/android/trisolarispms/data/api/model/BookingModels.kt

@@ -1,5 +1,20 @@
 package com.android.trisolarispms.data.api.model
 
+import java.util.Locale
+
+enum class BookingBillingMode {
+    PROPERTY_POLICY,
+    CUSTOM_WINDOW,
+    FULL_24H;
+
+    companion object {
+        fun from(value: String?): BookingBillingMode? {
+            val normalized = value?.trim()?.uppercase(Locale.US) ?: return null
+            return entries.firstOrNull { it.name == normalized }
+        }
+    }
+}
+
 data class BookingCheckInRequest(
     val roomIds: List<String>,
     val checkInAt: String? = null,
@@ -11,6 +26,8 @@ data class BookingCheckInRequest(
 data class BookingCreateRequest(
     val expectedCheckInAt: String,
     val expectedCheckOutAt: String,
+    val billingMode: BookingBillingMode? = null,
+    val billingCheckoutTime: String? = null,
     val source: String? = null,
     val guestPhoneE164: String? = null,
     val fromCity: String? = null,
@@ -57,11 +74,16 @@ data class BookingListItem(
     val expectedGuestCount: Int? = null,
     val notes: String? = null
     ,
-    val pending: Long? = null
+    val pending: Long? = null,
+    val billingMode: String? = null,
+    val billingCheckinTime: String? = null,
+    val billingCheckoutTime: String? = null
 )
 
 data class BookingBulkCheckInRequest(
-    val stays: List<BookingBulkCheckInStayRequest>
+    val stays: List<BookingBulkCheckInStayRequest>,
+    val transportMode: String? = null,
+    val notes: String? = null
 )
 
 data class BookingBulkCheckInStayRequest(
@@ -95,6 +117,7 @@ data class BookingDetailsResponse(
     val guestSignatureUrl: String? = null,
     val vehicleNumbers: List<String> = emptyList(),
     val roomNumbers: List<Int> = emptyList(),
+    val source: String? = null,
     val fromCity: String? = null,
     val toCity: String? = null,
     val memberRelation: String? = null,
@@ -110,11 +133,20 @@ data class BookingDetailsResponse(
     val totalGuestCount: Int? = null,
     val expectedGuestCount: Int? = null,
     val totalNightlyRate: Long? = null,
+    val notes: String? = null,
     val registeredByName: String? = null,
     val registeredByPhone: String? = null,
     val expectedPay: Long? = null,
     val amountCollected: Long? = null,
-    val pending: Long? = null
+    val pending: Long? = null,
+    val billingMode: String? = null,
+    val billingCheckinTime: String? = null,
+    val billingCheckoutTime: String? = null
+)
+
+data class BookingBillingPolicyUpdateRequest(
+    val billingMode: BookingBillingMode,
+    val billingCheckoutTime: String? = null
 )
 
 data class BookingLinkGuestRequest(
@@ -126,6 +158,11 @@ data class BookingCheckOutRequest(
     val notes: String? = null
 )
 
+data class BookingRoomStayCheckOutRequest(
+    val checkOutAt: String? = null,
+    val notes: String? = null
+)
+
 data class BookingCancelRequest(
     val cancelledAt: String? = null,
     val reason: String? = null
@@ -136,39 +173,12 @@ data class BookingNoShowRequest(
     val reason: String? = null
 )
 
-data class BookingRoomStayCreateRequest(
+data class BookingBalanceResponse(
-    val roomId: String,
+    val expectedPay: Long? = null,
-    val fromAt: String,
+    val amountCollected: Long? = null,
-    val toAt: String,
+    val pending: Long? = null
-    val notes: String? = null
 )
 
-// Room Stays
+data class RoomStayVoidRequest(
-
+    val reason: String
-data class RoomStayCreateRequest(
-    val roomId: String,
-    val guestId: String? = null,
-    val checkIn: String? = null,
-    val checkOut: String? = null
-)
-
-data class RoomStayDto(
-    val id: String? = null,
-    val bookingId: String? = null,
-    val roomId: String? = null,
-    val status: String? = null
-)
-
-data class RoomChangeRequest(
-    val newRoomId: String,
-    val movedAt: String? = null,
-    val idempotencyKey: String
-)
-
-data class RoomChangeResponse(
-    val oldRoomStayId: String? = null,
-    val newRoomStayId: String? = null,
-    val oldRoomId: String? = null,
-    val newRoomId: String? = null,
-    val movedAt: String? = null
 )

app/src/main/java/com/android/trisolarispms/data/api/model/CancellationPolicyModels.kt

@@ -0,0 +1,26 @@
+package com.android.trisolarispms.data.api.model
+
+import java.util.Locale
+
+enum class CancellationPenaltyMode {
+    NO_CHARGE,
+    ONE_NIGHT,
+    FULL_STAY;
+
+    companion object {
+        fun from(value: String?): CancellationPenaltyMode? {
+            val normalized = value?.trim()?.uppercase(Locale.US) ?: return null
+            return entries.firstOrNull { it.name == normalized }
+        }
+    }
+}
+
+data class CancellationPolicyRequest(
+    val freeDaysBeforeCheckin: Int,
+    val penaltyMode: CancellationPenaltyMode
+)
+
+data class CancellationPolicyResponse(
+    val freeDaysBeforeCheckin: Int? = null,
+    val penaltyMode: String? = null
+)

app/src/main/java/com/android/trisolarispms/data/api/service/BillingPolicyApi.kt

@@ -0,0 +1,22 @@
+package com.android.trisolarispms.data.api.service
+
+import com.android.trisolarispms.data.api.model.BillingPolicyRequest
+import com.android.trisolarispms.data.api.model.BillingPolicyResponse
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.PUT
+import retrofit2.http.Path
+
+interface BillingPolicyApi {
+    @GET("properties/{propertyId}/billing-policy")
+    suspend fun getBillingPolicy(
+        @Path("propertyId") propertyId: String
+    ): Response<BillingPolicyResponse>
+
+    @PUT("properties/{propertyId}/billing-policy")
+    suspend fun updateBillingPolicy(
+        @Path("propertyId") propertyId: String,
+        @Body body: BillingPolicyRequest
+    ): Response<BillingPolicyResponse>
+}

app/src/main/java/com/android/trisolarispms/data/api/service/BookingApi.kt

@@ -4,16 +4,17 @@ import com.android.trisolarispms.data.api.model.ActionResponse
 import com.android.trisolarispms.data.api.model.BookingCancelRequest
 import com.android.trisolarispms.data.api.model.BookingCheckInRequest
 import com.android.trisolarispms.data.api.model.BookingCheckOutRequest
+import com.android.trisolarispms.data.api.model.BookingRoomStayCheckOutRequest
 import com.android.trisolarispms.data.api.model.BookingCreateRequest
 import com.android.trisolarispms.data.api.model.BookingCreateResponse
 import com.android.trisolarispms.data.api.model.BookingLinkGuestRequest
 import com.android.trisolarispms.data.api.model.BookingNoShowRequest
-import com.android.trisolarispms.data.api.model.BookingRoomStayCreateRequest
 import com.android.trisolarispms.data.api.model.BookingListItem
 import com.android.trisolarispms.data.api.model.BookingBulkCheckInRequest
 import com.android.trisolarispms.data.api.model.BookingExpectedDatesRequest
 import com.android.trisolarispms.data.api.model.BookingDetailsResponse
-import com.android.trisolarispms.data.api.model.RoomStayDto
+import com.android.trisolarispms.data.api.model.BookingBalanceResponse
+import com.android.trisolarispms.data.api.model.BookingBillingPolicyUpdateRequest
 import com.android.trisolarispms.data.api.model.RazorpayQrEventDto
 import com.android.trisolarispms.data.api.model.RazorpayRequestListItemDto
 import com.android.trisolarispms.data.api.model.RazorpayQrRequest
@@ -59,6 +60,13 @@ interface BookingApi {
         @Body body: BookingExpectedDatesRequest
     ): Response<Unit>
 
+    @POST("properties/{propertyId}/bookings/{bookingId}/billing-policy")
+    suspend fun updateBookingBillingPolicy(
+        @Path("propertyId") propertyId: String,
+        @Path("bookingId") bookingId: String,
+        @Body body: BookingBillingPolicyUpdateRequest
+    ): Response<Unit>
+
     @GET("properties/{propertyId}/bookings/{bookingId}")
     suspend fun getBookingDetails(
         @Path("propertyId") propertyId: String,
@@ -70,7 +78,7 @@ interface BookingApi {
         @Path("propertyId") propertyId: String,
         @Path("bookingId") bookingId: String,
         @Body body: BookingLinkGuestRequest
-    ): Response<BookingCreateResponse>
+    ): Response<Unit>
 
     @POST("properties/{propertyId}/bookings/{bookingId}/check-in")
     suspend fun checkIn(
@@ -84,28 +92,35 @@ interface BookingApi {
         @Path("propertyId") propertyId: String,
         @Path("bookingId") bookingId: String,
         @Body body: BookingCheckOutRequest
-    ): Response<ActionResponse>
+    ): Response<Unit>
+
+    @POST("properties/{propertyId}/bookings/{bookingId}/room-stays/{roomStayId}/check-out")
+    suspend fun checkOutRoomStay(
+        @Path("propertyId") propertyId: String,
+        @Path("bookingId") bookingId: String,
+        @Path("roomStayId") roomStayId: String,
+        @Body body: BookingRoomStayCheckOutRequest
+    ): Response<Unit>
 
     @POST("properties/{propertyId}/bookings/{bookingId}/cancel")
     suspend fun cancelBooking(
         @Path("propertyId") propertyId: String,
         @Path("bookingId") bookingId: String,
         @Body body: BookingCancelRequest
-    ): Response<ActionResponse>
+    ): Response<Unit>
 
     @POST("properties/{propertyId}/bookings/{bookingId}/no-show")
     suspend fun noShow(
         @Path("propertyId") propertyId: String,
         @Path("bookingId") bookingId: String,
         @Body body: BookingNoShowRequest
-    ): Response<ActionResponse>
+    ): Response<Unit>
 
-    @POST("properties/{propertyId}/bookings/{bookingId}/room-stays")
+    @GET("properties/{propertyId}/bookings/{bookingId}/balance")
-    suspend fun preAssignRoomStay(
+    suspend fun getBookingBalance(
         @Path("propertyId") propertyId: String,
-        @Path("bookingId") bookingId: String,
+        @Path("bookingId") bookingId: String
-        @Body body: BookingRoomStayCreateRequest
+    ): Response<BookingBalanceResponse>
-    ): Response<RoomStayDto>
 
     @POST("properties/{propertyId}/bookings/{bookingId}/payments/razorpay/qr")
     suspend fun generateRazorpayQr(

app/src/main/java/com/android/trisolarispms/data/api/service/CancellationPolicyApi.kt

@@ -0,0 +1,22 @@
+package com.android.trisolarispms.data.api.service
+
+import com.android.trisolarispms.data.api.model.CancellationPolicyRequest
+import com.android.trisolarispms.data.api.model.CancellationPolicyResponse
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.PUT
+import retrofit2.http.Path
+
+interface CancellationPolicyApi {
+    @GET("properties/{propertyId}/cancellation-policy")
+    suspend fun getCancellationPolicy(
+        @Path("propertyId") propertyId: String
+    ): Response<CancellationPolicyResponse>
+
+    @PUT("properties/{propertyId}/cancellation-policy")
+    suspend fun updateCancellationPolicy(
+        @Path("propertyId") propertyId: String,
+        @Body body: CancellationPolicyRequest
+    ): Response<CancellationPolicyResponse>
+}

app/src/main/java/com/android/trisolarispms/data/api/service/RoomStayApi.kt

@@ -1,8 +1,7 @@
 package com.android.trisolarispms.data.api.service
 
-import com.android.trisolarispms.data.api.model.RoomChangeRequest
-import com.android.trisolarispms.data.api.model.RoomChangeResponse
 import com.android.trisolarispms.data.api.model.ActiveRoomStayDto
+import com.android.trisolarispms.data.api.model.RoomStayVoidRequest
 import retrofit2.Response
 import retrofit2.http.Body
 import retrofit2.http.GET
@@ -10,13 +9,13 @@ import retrofit2.http.POST
 import retrofit2.http.Path
 
 interface RoomStayApi {
-    @POST("properties/{propertyId}/room-stays/{roomStayId}/change-room")
-    suspend fun changeRoom(
-        @Path("propertyId") propertyId: String,
-        @Path("roomStayId") roomStayId: String,
-        @Body body: RoomChangeRequest
-    ): Response<RoomChangeResponse>
-
     @GET("properties/{propertyId}/room-stays/active")
     suspend fun listActiveRoomStays(@Path("propertyId") propertyId: String): Response<List<ActiveRoomStayDto>>
+
+    @POST("properties/{propertyId}/room-stays/{roomStayId}/void")
+    suspend fun voidRoomStay(
+        @Path("propertyId") propertyId: String,
+        @Path("roomStayId") roomStayId: String,
+        @Body body: RoomStayVoidRequest
+    ): Response<Unit>
 }

app/src/main/java/com/android/trisolarispms/ui/booking/BookingCreateScreen.kt

@@ -1,5 +1,6 @@
 package com.android.trisolarispms.ui.booking
 
+import android.app.TimePickerDialog
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
@@ -17,6 +18,7 @@ import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.CalendarMonth
+import androidx.compose.material.icons.filled.Schedule
 import androidx.compose.material.icons.filled.Done
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.CircularProgressIndicator
@@ -43,9 +45,11 @@ import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.android.trisolarispms.data.api.model.BookingBillingMode
 import com.kizitonwose.calendar.compose.HorizontalCalendar
 import com.kizitonwose.calendar.compose.rememberCalendarState
 import com.kizitonwose.calendar.core.CalendarDay
@@ -81,6 +85,7 @@ fun BookingCreateScreen(
     val relationOptions = listOf("FRIENDS", "FAMILY", "GROUP", "ALONE")
     val transportMenuExpanded = remember { mutableStateOf(false) }
     val transportOptions = listOf("CAR", "BIKE", "TRAIN", "PLANE", "BUS", "FOOT", "CYCLE", "OTHER")
+    val billingModeMenuExpanded = remember { mutableStateOf(false) }
     val displayFormatter = remember { DateTimeFormatter.ofPattern("dd-MM-yy HH:mm") }
     val phoneCountryMenuExpanded = remember { mutableStateOf(false) }
     val phoneCountries = remember { phoneCountryOptions() }
@@ -88,10 +93,13 @@ fun BookingCreateScreen(
 
     LaunchedEffect(propertyId) {
         viewModel.reset()
+        viewModel.loadBillingPolicy(propertyId)
         val now = OffsetDateTime.now()
         checkInDate.value = now.toLocalDate()
         checkInTime.value = now.format(DateTimeFormatter.ofPattern("HH:mm"))
-        viewModel.onExpectedCheckInAtChange(now.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME))
+        val nowIso = now.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME)
+        viewModel.onExpectedCheckInAtChange(nowIso)
+        viewModel.autoSetBillingFromCheckIn(nowIso)
         checkInNow.value = true
         val defaultCheckoutDate = now.toLocalDate().plusDays(1)
         checkOutDate.value = defaultCheckoutDate
@@ -139,7 +147,9 @@ fun BookingCreateScreen(
                             val now = OffsetDateTime.now()
                             checkInDate.value = now.toLocalDate()
                             checkInTime.value = now.format(DateTimeFormatter.ofPattern("HH:mm"))
-                            viewModel.onExpectedCheckInAtChange(now.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME))
+                            val nowIso = now.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME)
+                            viewModel.onExpectedCheckInAtChange(nowIso)
+                            viewModel.autoSetBillingFromCheckIn(nowIso)
                         } else {
                             viewModel.onExpectedCheckInAtChange("")
                         }
@@ -179,6 +189,47 @@ fun BookingCreateScreen(
                 modifier = Modifier.fillMaxWidth()
             )
             Spacer(modifier = Modifier.height(12.dp))
+            ExposedDropdownMenuBox(
+                expanded = billingModeMenuExpanded.value,
+                onExpandedChange = { billingModeMenuExpanded.value = !billingModeMenuExpanded.value }
+            ) {
+                OutlinedTextField(
+                    value = state.billingMode.name,
+                    onValueChange = {},
+                    readOnly = true,
+                    label = { Text("Billing Mode") },
+                    trailingIcon = {
+                        ExposedDropdownMenuDefaults.TrailingIcon(expanded = billingModeMenuExpanded.value)
+                    },
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .menuAnchor()
+                )
+                ExposedDropdownMenu(
+                    expanded = billingModeMenuExpanded.value,
+                    onDismissRequest = { billingModeMenuExpanded.value = false }
+                ) {
+                    BookingBillingMode.entries.forEach { mode ->
+                        DropdownMenuItem(
+                            text = { Text(mode.name) },
+                            onClick = {
+                                billingModeMenuExpanded.value = false
+                                viewModel.onBillingModeChange(mode)
+                            }
+                        )
+                    }
+                }
+            }
+            if (state.billingMode == BookingBillingMode.CUSTOM_WINDOW) {
+                Spacer(modifier = Modifier.height(12.dp))
+                TimePickerTextField(
+                    value = state.billingCheckoutTime,
+                    label = { Text("Billing check-out (HH:mm)") },
+                    onTimeSelected = viewModel::onBillingCheckoutTimeChange,
+                    modifier = Modifier.fillMaxWidth()
+                )
+            }
+            Spacer(modifier = Modifier.height(12.dp))
             val selectedCountry = findPhoneCountryOption(state.phoneCountryCode)
             val phoneDigitsLength = state.phoneNationalNumber.length
             val phoneIsComplete = phoneDigitsLength == selectedCountry.maxLength
@@ -491,6 +542,58 @@ fun BookingCreateScreen(
     }
 }
 
+@Composable
+private fun TimePickerTextField(
+    value: String,
+    label: @Composable () -> Unit,
+    onTimeSelected: (String) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val context = LocalContext.current
+    val parsed = runCatching {
+        val parts = value.split(":")
+        val hour = parts.getOrNull(0)?.toIntOrNull() ?: 12
+        val minute = parts.getOrNull(1)?.toIntOrNull() ?: 0
+        (hour.coerceIn(0, 23)) to (minute.coerceIn(0, 59))
+    }.getOrDefault(12 to 0)
+
+    OutlinedTextField(
+        value = value,
+        onValueChange = {},
+        readOnly = true,
+        label = label,
+        trailingIcon = {
+            IconButton(
+                onClick = {
+                    TimePickerDialog(
+                        context,
+                        { _, hourOfDay, minute ->
+                            onTimeSelected("%02d:%02d".format(hourOfDay, minute))
+                        },
+                        parsed.first,
+                        parsed.second,
+                        true
+                    ).show()
+                }
+            ) {
+                Icon(Icons.Default.Schedule, contentDescription = "Pick time")
+            }
+        },
+        modifier = modifier
+            .clickable {
+                TimePickerDialog(
+                    context,
+                    { _, hourOfDay, minute ->
+                        onTimeSelected("%02d:%02d".format(hourOfDay, minute))
+                    },
+                    parsed.first,
+                    parsed.second,
+                    true
+                ).show()
+            }
+    )
+}
+
 @Composable
 private fun DateTimePickerDialog(
     title: String,

app/src/main/java/com/android/trisolarispms/ui/booking/BookingCreateState.kt

@@ -1,5 +1,7 @@
 package com.android.trisolarispms.ui.booking
 
+import com.android.trisolarispms.data.api.model.BookingBillingMode
+
 data class BookingCreateState(
     val phoneCountryCode: String = "IN",
     val phoneNationalNumber: String = "",
@@ -8,6 +10,8 @@ data class BookingCreateState(
     val phoneVisitCountPhone: String? = null,
     val expectedCheckInAt: String = "",
     val expectedCheckOutAt: String = "",
+    val billingMode: BookingBillingMode = BookingBillingMode.PROPERTY_POLICY,
+    val billingCheckoutTime: String = "",
     val source: String = "WALKIN",
     val fromCity: String = "",
     val toCity: String = "",

app/src/main/java/com/android/trisolarispms/ui/booking/BookingCreateViewModel.kt

@@ -3,6 +3,7 @@ package com.android.trisolarispms.ui.booking
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.android.trisolarispms.data.api.core.ApiClient
+import com.android.trisolarispms.data.api.model.BookingBillingMode
 import com.android.trisolarispms.data.api.model.BookingCreateRequest
 import com.android.trisolarispms.data.api.model.BookingCreateResponse
 import com.android.trisolarispms.data.api.model.GuestDto
@@ -10,6 +11,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
+import java.time.OffsetDateTime
 
 class BookingCreateViewModel : ViewModel() {
     private val _state = MutableStateFlow(BookingCreateState())
@@ -27,6 +29,53 @@ class BookingCreateViewModel : ViewModel() {
         _state.update { it.copy(expectedCheckOutAt = value, error = null) }
     }
 
+    fun autoSetBillingFromCheckIn(checkInAtIso: String) {
+        val checkIn = runCatching { OffsetDateTime.parse(checkInAtIso) }.getOrNull() ?: return
+        val hour = checkIn.hour
+        if (hour in 0..4) {
+            _state.update {
+                it.copy(
+                    billingMode = BookingBillingMode.CUSTOM_WINDOW,
+                    billingCheckoutTime = "17:00",
+                    error = null
+                )
+            }
+            return
+        }
+        if (hour in 5..11) {
+            _state.update { it.copy(billingMode = BookingBillingMode.FULL_24H, error = null) }
+        }
+    }
+
+    fun loadBillingPolicy(propertyId: String) {
+        if (propertyId.isBlank()) return
+        viewModelScope.launch {
+            try {
+                val api = ApiClient.create()
+                val response = api.getBillingPolicy(propertyId)
+                val body = response.body()
+                if (response.isSuccessful && body != null) {
+                    _state.update {
+                        it.copy(
+                            billingCheckoutTime = body.billingCheckoutTime.orEmpty(),
+                            error = null
+                        )
+                    }
+                }
+            } catch (_: Exception) {
+                // Keep defaults; billing policy can still be set manually.
+            }
+        }
+    }
+
+    fun onBillingModeChange(value: BookingBillingMode) {
+        _state.update { it.copy(billingMode = value, error = null) }
+    }
+
+    fun onBillingCheckoutTimeChange(value: String) {
+        _state.update { it.copy(billingCheckoutTime = value, error = null) }
+    }
+
     fun onPhoneCountryChange(value: String) {
         val option = findPhoneCountryOption(value)
         _state.update { current ->
@@ -132,6 +181,14 @@ class BookingCreateViewModel : ViewModel() {
             _state.update { it.copy(error = "Check-in and check-out are required") }
             return
         }
+        val hhmmRegex = Regex("^([01]\\d|2[0-3]):[0-5]\\d$")
+        val billingCheckout = current.billingCheckoutTime.trim()
+        if (current.billingMode == BookingBillingMode.CUSTOM_WINDOW) {
+            if (!hhmmRegex.matches(billingCheckout)) {
+                _state.update { it.copy(error = "Billing checkout time must be HH:mm") }
+                return
+            }
+        }
         val childCount = current.childCount.toIntOrNull()
         val maleCount = current.maleCount.toIntOrNull()
         val femaleCount = current.femaleCount.toIntOrNull()
@@ -152,6 +209,12 @@ class BookingCreateViewModel : ViewModel() {
                     body = BookingCreateRequest(
                         expectedCheckInAt = checkIn,
                         expectedCheckOutAt = checkOut,
+                        billingMode = current.billingMode,
+                        billingCheckoutTime = when (current.billingMode) {
+                            BookingBillingMode.CUSTOM_WINDOW -> billingCheckout
+                            BookingBillingMode.PROPERTY_POLICY -> null
+                            BookingBillingMode.FULL_24H -> null
+                        },
                         source = current.source.trim().ifBlank { null },
                         guestPhoneE164 = phone,
                         fromCity = current.fromCity.trim().ifBlank { null },

app/src/main/java/com/android/trisolarispms/ui/navigation/AppRoute.kt

@@ -68,6 +68,7 @@ sealed interface AppRoute {
         val ratePlanCode: String
     ) : AppRoute
     data class RazorpaySettings(val propertyId: String) : AppRoute
+    data class PropertySettings(val propertyId: String) : AppRoute
     data class RazorpayQr(
         val propertyId: String,
         val bookingId: String,

app/src/main/java/com/android/trisolarispms/ui/navigation/MainBackNavigation.kt

@@ -43,6 +43,7 @@ internal fun handleBackNavigation(
             currentRoute.roomTypeId
         )
         is AppRoute.RazorpaySettings -> refs.openActiveRoomStays(currentRoute.propertyId)
+        is AppRoute.PropertySettings -> refs.openActiveRoomStays(currentRoute.propertyId)
         is AppRoute.RazorpayQr -> refs.route.value = AppRoute.BookingDetailsTabs(
             currentRoute.propertyId,
             currentRoute.bookingId,

app/src/main/java/com/android/trisolarispms/ui/navigation/MainRoutesStayFlow.kt

@@ -11,6 +11,7 @@ import com.android.trisolarispms.ui.roomstay.ActiveRoomStaysScreen
 import com.android.trisolarispms.ui.roomstay.ManageRoomStaySelection
 import com.android.trisolarispms.ui.roomstay.ManageRoomStayRatesScreen
 import com.android.trisolarispms.ui.roomstay.ManageRoomStaySelectScreen
+import com.android.trisolarispms.ui.settings.PropertySettingsScreen
 
 @Composable
 internal fun renderStayFlowRoutes(
@@ -70,13 +71,13 @@ internal fun renderStayFlowRoutes(
             },
             showBack = !shouldBlockHomeBack(authz, state, currentRoute.propertyId),
             onViewRooms = { refs.route.value = AppRoute.Rooms(currentRoute.propertyId) },
+            onOpenSettings = { refs.route.value = AppRoute.PropertySettings(currentRoute.propertyId) },
             onCreateBooking = { refs.route.value = AppRoute.CreateBooking(currentRoute.propertyId) },
             canCreateBooking = authz.canCreateBookingFor(currentRoute.propertyId),
             showRazorpaySettings = authz.canManageRazorpaySettings(currentRoute.propertyId),
             onRazorpaySettings = { refs.route.value = AppRoute.RazorpaySettings(currentRoute.propertyId) },
             showUserAdmin = authz.canManagePropertyUsers(currentRoute.propertyId),
             onUserAdmin = { refs.route.value = AppRoute.PropertyUsers(currentRoute.propertyId) },
-            onLogout = authViewModel::signOut,
             onManageRoomStay = { booking ->
                 val fromAt = booking.checkInAt?.takeIf { it.isNotBlank() }
                     ?: booking.expectedCheckInAt.orEmpty()
@@ -111,6 +112,14 @@ internal fun renderStayFlowRoutes(
             onBack = { refs.openActiveRoomStays(currentRoute.propertyId) }
         )
 
+        is AppRoute.PropertySettings -> PropertySettingsScreen(
+            propertyId = currentRoute.propertyId,
+            canManageCancellationPolicy = authz.canManageCancellationPolicy(currentRoute.propertyId),
+            canManageBillingPolicy = authz.canManageBillingPolicy(currentRoute.propertyId),
+            onBack = { refs.openActiveRoomStays(currentRoute.propertyId) },
+            onLogout = authViewModel::signOut
+        )
+
         is AppRoute.RazorpayQr -> RazorpayQrScreen(
             propertyId = currentRoute.propertyId,
             bookingId = currentRoute.bookingId,

app/src/main/java/com/android/trisolarispms/ui/roomstay/ActiveRoomStaysScreen.kt

@@ -17,7 +17,7 @@ import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.People
 import androidx.compose.material.icons.filled.MeetingRoom
 import androidx.compose.material.icons.filled.Payment
-import androidx.compose.material.icons.filled.MoreVert
+import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
@@ -32,8 +32,6 @@ import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
-import androidx.compose.material3.DropdownMenu
-import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.material3.LinearProgressIndicator
@@ -41,8 +39,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -58,13 +54,13 @@ fun ActiveRoomStaysScreen(
     onBack: () -> Unit,
     showBack: Boolean,
     onViewRooms: () -> Unit,
+    onOpenSettings: () -> Unit,
     onCreateBooking: () -> Unit,
     canCreateBooking: Boolean,
     showRazorpaySettings: Boolean,
     onRazorpaySettings: () -> Unit,
     showUserAdmin: Boolean,
     onUserAdmin: () -> Unit,
-    onLogout: () -> Unit,
     onManageRoomStay: (BookingListItem) -> Unit,
     onViewBookingStays: (BookingListItem) -> Unit,
     onOpenBookingDetails: (BookingListItem) -> Unit,
@@ -72,7 +68,6 @@ fun ActiveRoomStaysScreen(
 ) {
     val state by viewModel.state.collectAsState()
     val selectedBooking = remember { mutableStateOf<BookingListItem?>(null) }
-    val menuExpanded = remember { mutableStateOf(false) }
 
     LaunchedEffect(propertyId) {
         viewModel.load(propertyId)
@@ -93,6 +88,9 @@ fun ActiveRoomStaysScreen(
                     IconButton(onClick = onViewRooms) {
                         Icon(Icons.Default.MeetingRoom, contentDescription = "Available Rooms")
                     }
+                    IconButton(onClick = onOpenSettings) {
+                        Icon(Icons.Default.Settings, contentDescription = "Settings")
+                    }
                     if (showRazorpaySettings) {
                         IconButton(onClick = onRazorpaySettings) {
                             Icon(Icons.Default.Payment, contentDescription = "Razorpay Settings")
@@ -103,21 +101,6 @@ fun ActiveRoomStaysScreen(
                             Icon(Icons.Default.People, contentDescription = "Property Users")
                         }
                     }
-                    IconButton(onClick = { menuExpanded.value = true }) {
-                        Icon(Icons.Default.MoreVert, contentDescription = "Menu")
-                    }
-                    DropdownMenu(
-                        expanded = menuExpanded.value,
-                        onDismissRequest = { menuExpanded.value = false }
-                    ) {
-                        DropdownMenuItem(
-                            text = { Text("Logout") },
-                            onClick = {
-                                menuExpanded.value = false
-                                onLogout()
-                            }
-                        )
-                    }
                 },
                 colors = TopAppBarDefaults.topAppBarColors()
             )

app/src/main/java/com/android/trisolarispms/ui/roomstay/BookingDetailsTabsScreen.kt

@@ -55,6 +55,7 @@ import coil.decode.SvgDecoder
 import coil.request.ImageRequest
 import com.android.trisolarispms.data.api.core.ApiConstants
 import com.android.trisolarispms.data.api.core.FirebaseAuthTokenProvider
+import com.android.trisolarispms.data.api.model.BookingBillingMode
 import com.android.trisolarispms.data.api.model.BookingDetailsResponse
 import com.android.trisolarispms.ui.guestdocs.GuestDocumentsTab
 import com.google.firebase.auth.FirebaseAuth
@@ -264,6 +265,14 @@ private fun GuestInfoTabContent(
                     }
                 }
             }
+            val billingMode = BookingBillingMode.from(details?.billingMode)
+            GuestDetailRow(label = "Billing Mode", value = details?.billingMode)
+            if (billingMode == BookingBillingMode.FULL_24H) {
+                GuestDetailRow(label = "Billing Window", value = "24-hour block")
+            } else {
+                GuestDetailRow(label = "Billing Check-in Time", value = details?.billingCheckinTime)
+                GuestDetailRow(label = "Billing Checkout Time", value = details?.billingCheckoutTime)
+            }
             GuestDetailRow(
                 label = "Rooms Booked",
                 value = details?.roomNumbers?.takeIf { it.isNotEmpty() }?.joinToString(", ")

app/src/main/java/com/android/trisolarispms/ui/settings/PropertySettingsScreen.kt

@@ -0,0 +1,240 @@
+package com.android.trisolarispms.ui.settings
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+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.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.ExposedDropdownMenuDefaults
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.android.trisolarispms.data.api.model.CancellationPenaltyMode
+
+@Composable
+@OptIn(ExperimentalMaterial3Api::class)
+fun PropertySettingsScreen(
+    propertyId: String,
+    canManageCancellationPolicy: Boolean,
+    canManageBillingPolicy: Boolean,
+    onBack: () -> Unit,
+    onLogout: () -> Unit,
+    viewModel: PropertySettingsViewModel = viewModel()
+) {
+    val state by viewModel.state.collectAsState()
+
+    val canLoadPolicies = canManageCancellationPolicy || canManageBillingPolicy
+    LaunchedEffect(propertyId, canLoadPolicies) {
+        if (canLoadPolicies) {
+            viewModel.load(propertyId)
+        }
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Settings") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(Icons.AutoMirrored.Default.ArrowBack, contentDescription = "Back")
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors()
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+                .padding(24.dp)
+                .verticalScroll(rememberScrollState()),
+            verticalArrangement = Arrangement.Top
+        ) {
+            if (canManageCancellationPolicy) {
+                Text(
+                    text = "Cancellation Policy",
+                    style = MaterialTheme.typography.titleMedium
+                )
+                Spacer(modifier = Modifier.height(4.dp))
+                Text(
+                    text = "Configure how much to charge when booking is cancelled close to check-in.",
+                    style = MaterialTheme.typography.bodySmall
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+
+                if (state.isLoading) {
+                    CircularProgressIndicator()
+                    Spacer(modifier = Modifier.height(12.dp))
+                }
+
+                state.message?.let {
+                    Text(text = it, color = MaterialTheme.colorScheme.primary)
+                    Spacer(modifier = Modifier.height(8.dp))
+                }
+                state.error?.let {
+                    Text(text = it, color = MaterialTheme.colorScheme.error)
+                    Spacer(modifier = Modifier.height(8.dp))
+                }
+
+                OutlinedTextField(
+                    value = state.freeDaysBeforeCheckinInput,
+                    onValueChange = viewModel::onFreeDaysBeforeCheckinChange,
+                    label = { Text("Free days before check-in") },
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+                    modifier = Modifier.fillMaxWidth()
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+
+                PenaltyModeDropdown(
+                    value = state.penaltyMode,
+                    enabled = true,
+                    onSelect = viewModel::onPenaltyModeChange
+                )
+                Spacer(modifier = Modifier.height(16.dp))
+
+                Button(
+                    onClick = { viewModel.save(propertyId) },
+                    enabled = !state.isSaving,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    if (state.isSaving) {
+                        CircularProgressIndicator(
+                            modifier = Modifier
+                                .height(16.dp)
+                                .padding(end = 8.dp),
+                            strokeWidth = 2.dp
+                        )
+                        Text("Saving...")
+                    } else {
+                        Text("Save policy")
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(24.dp))
+            }
+
+            if (canManageBillingPolicy) {
+                Text(
+                    text = "Billing Policy",
+                    style = MaterialTheme.typography.titleMedium
+                )
+                Spacer(modifier = Modifier.height(4.dp))
+                Text(
+                    text = "Manage default billing check-in and checkout times in HH:mm format.",
+                    style = MaterialTheme.typography.bodySmall
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+
+                OutlinedTextField(
+                    value = state.billingCheckinTimeInput,
+                    onValueChange = viewModel::onBillingCheckinTimeChange,
+                    label = { Text("Billing check-in time (HH:mm)") },
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Ascii),
+                    modifier = Modifier.fillMaxWidth()
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+                OutlinedTextField(
+                    value = state.billingCheckoutTimeInput,
+                    onValueChange = viewModel::onBillingCheckoutTimeChange,
+                    label = { Text("Billing checkout time (HH:mm)") },
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Ascii),
+                    modifier = Modifier.fillMaxWidth()
+                )
+                Spacer(modifier = Modifier.height(16.dp))
+                Button(
+                    onClick = { viewModel.saveBillingPolicy(propertyId) },
+                    enabled = !state.isSavingBilling,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    if (state.isSavingBilling) {
+                        CircularProgressIndicator(
+                            modifier = Modifier
+                                .height(16.dp)
+                                .padding(end = 8.dp),
+                            strokeWidth = 2.dp
+                        )
+                        Text("Saving...")
+                    } else {
+                        Text("Save billing policy")
+                    }
+                }
+                Spacer(modifier = Modifier.height(24.dp))
+            }
+
+            Button(
+                onClick = onLogout,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text("Logout")
+            }
+        }
+    }
+}
+
+@Composable
+@OptIn(ExperimentalMaterial3Api::class)
+private fun PenaltyModeDropdown(
+    value: CancellationPenaltyMode,
+    enabled: Boolean,
+    onSelect: (CancellationPenaltyMode) -> Unit
+) {
+    val expanded = remember { mutableStateOf(false) }
+    ExposedDropdownMenuBox(
+        expanded = expanded.value,
+        onExpandedChange = { if (enabled) expanded.value = !expanded.value }
+    ) {
+        OutlinedTextField(
+            value = value.name,
+            onValueChange = {},
+            readOnly = true,
+            label = { Text("Penalty mode") },
+            trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded.value) },
+            modifier = Modifier
+                .menuAnchor()
+                .fillMaxWidth()
+        )
+        ExposedDropdownMenu(
+            expanded = expanded.value,
+            onDismissRequest = { expanded.value = false }
+        ) {
+            CancellationPenaltyMode.entries.forEach { mode ->
+                DropdownMenuItem(
+                    text = { Text(mode.name) },
+                    onClick = {
+                        expanded.value = false
+                        onSelect(mode)
+                    }
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/android/trisolarispms/ui/settings/PropertySettingsState.kt

@@ -0,0 +1,15 @@
+package com.android.trisolarispms.ui.settings
+
+import com.android.trisolarispms.data.api.model.CancellationPenaltyMode
+
+data class PropertySettingsState(
+    val freeDaysBeforeCheckinInput: String = "",
+    val penaltyMode: CancellationPenaltyMode = CancellationPenaltyMode.ONE_NIGHT,
+    val billingCheckinTimeInput: String = "",
+    val billingCheckoutTimeInput: String = "",
+    val isLoading: Boolean = false,
+    val isSaving: Boolean = false,
+    val isSavingBilling: Boolean = false,
+    val error: String? = null,
+    val message: String? = null
+)

app/src/main/java/com/android/trisolarispms/ui/settings/PropertySettingsViewModel.kt

@@ -0,0 +1,188 @@
+package com.android.trisolarispms.ui.settings
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.android.trisolarispms.data.api.core.ApiClient
+import com.android.trisolarispms.data.api.model.BillingPolicyRequest
+import com.android.trisolarispms.data.api.model.CancellationPenaltyMode
+import com.android.trisolarispms.data.api.model.CancellationPolicyRequest
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+
+class PropertySettingsViewModel : ViewModel() {
+    private val _state = MutableStateFlow(PropertySettingsState())
+    val state: StateFlow<PropertySettingsState> = _state
+
+    fun load(propertyId: String) {
+        if (propertyId.isBlank()) return
+        viewModelScope.launch {
+            _state.update { it.copy(isLoading = true, error = null, message = null) }
+            try {
+                val api = ApiClient.create()
+                val cancellationResponse = api.getCancellationPolicy(propertyId)
+                val billingResponse = api.getBillingPolicy(propertyId)
+                val cancellationBody = cancellationResponse.body()
+                val billingBody = billingResponse.body()
+                if (
+                    cancellationResponse.isSuccessful &&
+                    cancellationBody != null &&
+                    billingResponse.isSuccessful &&
+                    billingBody != null
+                ) {
+                    val mode = CancellationPenaltyMode.from(cancellationBody.penaltyMode) ?: CancellationPenaltyMode.ONE_NIGHT
+                    val freeDays = cancellationBody.freeDaysBeforeCheckin ?: 0
+                    _state.update {
+                        it.copy(
+                            freeDaysBeforeCheckinInput = freeDays.toString(),
+                            penaltyMode = mode,
+                            billingCheckinTimeInput = billingBody.billingCheckinTime.orEmpty(),
+                            billingCheckoutTimeInput = billingBody.billingCheckoutTime.orEmpty(),
+                            isLoading = false,
+                            isSaving = false,
+                            isSavingBilling = false,
+                            error = null
+                        )
+                    }
+                } else {
+                    _state.update {
+                        it.copy(
+                            isLoading = false,
+                            isSaving = false,
+                            isSavingBilling = false,
+                            error = "Load failed: ${cancellationResponse.code()}/${billingResponse.code()}",
+                            message = null
+                        )
+                    }
+                }
+            } catch (e: Exception) {
+                _state.update {
+                    it.copy(
+                        isLoading = false,
+                        isSaving = false,
+                        isSavingBilling = false,
+                        error = e.localizedMessage ?: "Load failed",
+                        message = null
+                    )
+                }
+            }
+        }
+    }
+
+    fun onFreeDaysBeforeCheckinChange(value: String) {
+        _state.update {
+            it.copy(
+                freeDaysBeforeCheckinInput = value.filter { ch -> ch.isDigit() },
+                error = null,
+                message = null
+            )
+        }
+    }
+
+    fun onPenaltyModeChange(value: CancellationPenaltyMode) {
+        _state.update { it.copy(penaltyMode = value, error = null, message = null) }
+    }
+
+    fun onBillingCheckinTimeChange(value: String) {
+        _state.update { it.copy(billingCheckinTimeInput = value, error = null, message = null) }
+    }
+
+    fun onBillingCheckoutTimeChange(value: String) {
+        _state.update { it.copy(billingCheckoutTimeInput = value, error = null, message = null) }
+    }
+
+    fun save(propertyId: String) {
+        if (propertyId.isBlank()) return
+        val current = state.value
+        val freeDays = current.freeDaysBeforeCheckinInput.toIntOrNull()
+        if (freeDays == null) {
+            _state.update { it.copy(error = "Free days before check-in is required", message = null) }
+            return
+        }
+        viewModelScope.launch {
+            _state.update { it.copy(isSaving = true, error = null, message = null) }
+            try {
+                val api = ApiClient.create()
+                val response = api.updateCancellationPolicy(
+                    propertyId = propertyId,
+                    body = CancellationPolicyRequest(
+                        freeDaysBeforeCheckin = freeDays,
+                        penaltyMode = current.penaltyMode
+                    )
+                )
+                if (response.isSuccessful) {
+                    _state.update { it.copy(isSaving = false, error = null, message = "Saved") }
+                } else {
+                    _state.update {
+                        it.copy(
+                            isSaving = false,
+                            error = "Save failed: ${response.code()}",
+                            message = null
+                        )
+                    }
+                }
+            } catch (e: Exception) {
+                _state.update {
+                    it.copy(
+                        isSaving = false,
+                        error = e.localizedMessage ?: "Save failed",
+                        message = null
+                    )
+                }
+            }
+        }
+    }
+
+    fun saveBillingPolicy(propertyId: String) {
+        if (propertyId.isBlank()) return
+        val current = state.value
+        val checkin = current.billingCheckinTimeInput.trim()
+        val checkout = current.billingCheckoutTimeInput.trim()
+        if (!isValidHhMm(checkin)) {
+            _state.update { it.copy(error = "billingCheckinTime must be HH:mm", message = null) }
+            return
+        }
+        if (!isValidHhMm(checkout)) {
+            _state.update { it.copy(error = "billingCheckoutTime must be HH:mm", message = null) }
+            return
+        }
+        viewModelScope.launch {
+            _state.update { it.copy(isSavingBilling = true, error = null, message = null) }
+            try {
+                val api = ApiClient.create()
+                val response = api.updateBillingPolicy(
+                    propertyId = propertyId,
+                    body = BillingPolicyRequest(
+                        billingCheckinTime = checkin,
+                        billingCheckoutTime = checkout
+                    )
+                )
+                if (response.isSuccessful) {
+                    _state.update { it.copy(isSavingBilling = false, error = null, message = "Saved") }
+                } else {
+                    _state.update {
+                        it.copy(
+                            isSavingBilling = false,
+                            error = "Save failed: ${response.code()}",
+                            message = null
+                        )
+                    }
+                }
+            } catch (e: Exception) {
+                _state.update {
+                    it.copy(
+                        isSavingBilling = false,
+                        error = e.localizedMessage ?: "Save failed",
+                        message = null
+                    )
+                }
+            }
+        }
+    }
+
+    private fun isValidHhMm(value: String): Boolean {
+        val regex = Regex("^([01]\\d|2[0-3]):[0-5]\\d$")
+        return regex.matches(value)
+    }
+}