update

backend/src/services/booking.service.ts

@@ -141,6 +141,35 @@ class BookingService {
     return rowToBuchung(rows[0]);
   }
 
+  /**
+   * Checks whether a vehicle is out of service during the given interval.
+   * Returns the out-of-service period if there IS a conflict, null otherwise.
+   */
+  async checkOutOfServiceConflict(
+    fahrzeugId: string,
+    beginn: Date,
+    ende: Date
+  ): Promise<{ ausser_dienst_von: Date; ausser_dienst_bis: Date } | null> {
+    const query = `
+      SELECT ausser_dienst_von, ausser_dienst_bis
+      FROM fahrzeuge
+      WHERE id = $1
+        AND deleted_at IS NULL
+        AND status IN ('ausser_dienst_wartung', 'ausser_dienst_schaden')
+        AND ausser_dienst_von IS NOT NULL
+        AND ausser_dienst_bis IS NOT NULL
+        AND ($2::timestamptz, $3::timestamptz) OVERLAPS (ausser_dienst_von, ausser_dienst_bis)
+      LIMIT 1
+    `;
+
+    const { rows } = await pool.query(query, [fahrzeugId, beginn, ende]);
+    if (rows.length === 0) return null;
+    return {
+      ausser_dienst_von: new Date(rows[0].ausser_dienst_von),
+      ausser_dienst_bis: new Date(rows[0].ausser_dienst_bis),
+    };
+  }
+
   /**
    * Checks whether a vehicle is already booked for the given interval.
    * Returns true if there IS a conflict.
@@ -171,8 +200,13 @@ class BookingService {
     return rows.length > 0;
   }
 
-  /** Creates a new booking. Throws if the vehicle has a conflicting booking. */
+  /** Creates a new booking. Throws if the vehicle has a conflicting booking or is out of service. */
   async create(data: CreateBuchungData, userId: string): Promise<FahrzeugBuchung> {
+    const outOfService = await this.checkOutOfServiceConflict(data.fahrzeugId, data.beginn, data.ende);
+    if (outOfService) {
+      throw new Error('Fahrzeug ist im gewählten Zeitraum außer Dienst');
+    }
+
     const hasConflict = await this.checkConflict(
       data.fahrzeugId,
       data.beginn,
@@ -225,6 +259,15 @@ class BookingService {
       data.fahrzeugId != null || data.beginn != null || data.ende != null;
 
     if (timingChanged) {
+      const outOfService = await this.checkOutOfServiceConflict(
+        effectiveFahrzeugId,
+        effectiveBeginn,
+        effectiveEnde
+      );
+      if (outOfService) {
+        throw new Error('Fahrzeug ist im gewählten Zeitraum außer Dienst');
+      }
+
       const hasConflict = await this.checkConflict(
         effectiveFahrzeugId,
         effectiveBeginn,