Add rate plans, room stay rates, and payments ledger

src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt

@@ -13,6 +13,7 @@ import com.android.trisolarisserver.db.repo.BookingRepo
 import com.android.trisolarisserver.models.booking.BookingStatus
 import com.android.trisolarisserver.models.booking.TransportMode
 import com.android.trisolarisserver.models.room.RoomStay
+import com.android.trisolarisserver.models.room.RateSource
 import com.android.trisolarisserver.models.property.Role
 import com.android.trisolarisserver.repo.AppUserRepo
 import com.android.trisolarisserver.repo.PropertyRepo
@@ -142,6 +143,10 @@ class BookingFlow(
                 room = room,
                 fromAt = checkInAt,
                 toAt = null,
+                rateSource = parseRateSource(request.rateSource),
+                nightlyRate = request.nightlyRate,
+                ratePlanCode = request.ratePlanCode,
+                currency = request.currency ?: booking.property.currency,
                 createdBy = actor
             )
             roomStayRepo.save(stay)
@@ -273,6 +278,10 @@ class BookingFlow(
             room = room,
             fromAt = fromAt,
             toAt = toAt,
+            rateSource = parseRateSource(request.rateSource),
+            nightlyRate = request.nightlyRate,
+            ratePlanCode = request.ratePlanCode,
+            currency = request.currency ?: booking.property.currency,
             createdBy = actor
         )
         roomStayRepo.save(stay)
@@ -303,6 +312,15 @@ class BookingFlow(
         }
     }
 
+    private fun parseRateSource(value: String?): RateSource? {
+        if (value.isNullOrBlank()) return null
+        return try {
+            RateSource.valueOf(value.trim())
+        } catch (_: IllegalArgumentException) {
+            throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Unknown rate source")
+        }
+    }
+
     private fun isTransportModeAllowed(
         property: com.android.trisolarisserver.models.property.Property,
         mode: TransportMode