Segment based seat assignement added

apps/edr-passenger-api/src/modules/schedules/schedules.service.ts

@@ -102,7 +102,63 @@ export class SchedulesService {
       },
     });
     if (!schedule) throw new NotFoundException('Schedule not found');
-    return schedule;
+
+    // Compute effective seat statuses from SeatHold + JourneySegment
+    // (seat.status DB column is no longer written during booking)
+    const allSeatIds = schedule.coachAssignments.flatMap(a => a.coach.seats.map(s => s.id));
+    const effectiveStatuses = await this.resolveEffectiveStatuses(id, allSeatIds);
+
+    return {
+      ...schedule,
+      coachAssignments: schedule.coachAssignments.map(a => ({
+        ...a,
+        coach: {
+          ...a.coach,
+          seats: a.coach.seats.map(s => ({
+            ...s,
+            status: effectiveStatuses.get(s.id) ?? s.status,
+          })),
+        },
+      })),
+    };
+  }
+
+  /**
+   * Computes effective seat status for a schedule by checking active SeatHolds
+   * and confirmed JourneySegments. The DB seat.status column is not written
+   * during segment-based booking, so this overlay is required.
+   * Priority: BLOCKED (physical) > BOOKED (confirmed) > HELD (active hold) > AVAILABLE
+   */
+  private async resolveEffectiveStatuses(
+    scheduleId: string,
+    seatIds: string[],
+  ): Promise<Map<string, string>> {
+    const statusMap = new Map<string, string>();
+    if (seatIds.length === 0) return statusMap;
+
+    const [activeHolds, bookedSegments] = await Promise.all([
+      this.prisma.seatHold.findMany({
+        where: { scheduleId, expiresAt: { gt: new Date() }, seatIds: { hasSome: seatIds } },
+        select: { seatIds: true },
+      }),
+      this.prisma.journeySegment.findMany({
+        where: {
+          scheduleId,
+          seatId: { in: seatIds },
+          journey: { status: { in: ['CONFIRMED', 'PENDING_PAYMENT'] } },
+        },
+        select: { seatId: true },
+      }),
+    ]);
+
+    for (const hold of activeHolds)
+      for (const seatId of hold.seatIds)
+        if (seatIds.includes(seatId)) statusMap.set(seatId, 'HELD');
+
+    for (const seg of bookedSegments)
+      if (seg.seatId) statusMap.set(seg.seatId, 'BOOKED');
+
+    return statusMap;
   }
 
   updateScheduleStatus(id: string, dto: UpdateScheduleStatusDto) {