fix: consider booking status O correctly

src/BusProNet/Constants.php

@@ -57,7 +57,7 @@ final class Constants
     // Booking status codes from buchungstatusmoeglich attribute
     public const BOOKING_STATUS_FREE = 'F';
     public const BOOKING_STATUS_INQUIRY = 'A';
-    public const BOOKING_STATUS_OPEN = 'O'; // Optionsbuchung - not relevant for current implementation
+    public const BOOKING_STATUS_OPEN = 'O'; // Optionsbuchung
 
     // Payment methods
     public const PAYMENT_METHOD_TRANSFER = 'transfer';

src/Service/BookingService.php

@@ -527,32 +527,49 @@ class BookingService
     }
 
     /**
-     * Determines the initial booking status based on travel configuration.
+     * Determines the initial booking status based on travel configuration and API restrictions.
      *
-     * This method implements a multi-stage check to determine if a booking
-     * should start as inquiry ('A') or use the configured default status:
-     * 1. Checks if final bookings are allowed via buchungstatusmoeglich attribute from API
+     * This method implements a multi-stage check to determine the appropriate booking status:
+     * 1. Checks API restrictions via buchungstatusmoeglich attribute
      * 2. Checks if only inquiry rooms are available (no Frei rooms with available > 0)
      *
+     * When API provides allowed status restrictions, the method respects them by selecting
+     * the best available status in order of preference: configured default → 'F' → 'O' → 'A'.
+     *
      * The default status is configured via DEFAULT_BOOKING_STATUS env variable.
      * Use 'O' (Option) during beta for agency confirmation, 'F' (Final) for production.
      *
      * @param Travel $travelData The travel data to evaluate
      *
-     * @return string 'A' for inquiry booking, or the configured default status
+     * @return string The appropriate booking status code ('F', 'O', or 'A')
      */
     private function determineInitialBookingStatus(Travel $travelData): string
     {
-        // Check 1: Allowed booking status from buchungstatusmoeglich attribute (from availability API)
-        // Only applies if the API provided status restrictions
-        if ([] !== $travelData->allowedBookingStatus
-            && false === $travelData->isBookingStatusAllowed(Constants::BOOKING_STATUS_FREE)) {
-            return 'A';
+        // Check 1: Only inquiry rooms available (all rooms with available > 0 have status 'Anfrage')
+        // This takes precedence as it's a business rule independent of API restrictions
+        if ($travelData->requiresInquiryBooking()) {
+            return Constants::BOOKING_STATUS_INQUIRY;
         }
 
-        // Check 2: Only inquiry rooms available (all rooms with available > 0 have status 'Anfrage')
-        if ($travelData->requiresInquiryBooking()) {
-            return 'A';
+        // Check 2: If API provided allowed status restrictions, respect them
+        if ([] !== $travelData->allowedBookingStatus) {
+            // Prefer configured default status if allowed
+            if ($travelData->isBookingStatusAllowed($this->defaultBookingStatus)) {
+                return $this->defaultBookingStatus;
+            }
+
+            // Fall back to allowed statuses in order of preference: F → O → A
+            if ($travelData->isBookingStatusAllowed(Constants::BOOKING_STATUS_FREE)) {
+                return Constants::BOOKING_STATUS_FREE;
+            }
+
+            if ($travelData->isBookingStatusAllowed(Constants::BOOKING_STATUS_OPEN)) {
+                return Constants::BOOKING_STATUS_OPEN;
+            }
+
+            if ($travelData->isBookingStatusAllowed(Constants::BOOKING_STATUS_INQUIRY)) {
+                return Constants::BOOKING_STATUS_INQUIRY;
+            }
         }
 
         return $this->defaultBookingStatus;