packages/equipment-rental/
├── src/
│   ├── types.ts              # GearItem, RentalBooking, TransferOrder, ConsumableItem, Zod schemas
│   ├── conflict-detector.ts  # checkGearConflict, isGearAvailable, findAvailableGear
│   ├── inventory-tracker.ts  # InventoryTracker (Multi-hub warehouse transfers & serial tracking)
│   ├── consumables-meter.ts  # ConsumablesMeter (Track roll/liquid consumption per session)
│   ├── checklist-audit.ts    # HandoverAuditService, DEFAULT_ACCESSORY_PENALTY_VND, formatVND
│   └── index.ts              # SSoT Unified Barrel

import {
  checkGearConflict,
  findAvailableGear,
  ConsumablesMeter,
  InventoryTracker,
  HandoverAuditService,
  createGearItem,
  createRentalBooking,
  type GearItem,
  type RentalBooking,
} from '@kido/equipment-rental';

// 1. Define High-Value Glambot Robotic Arm Kit
const glambotArm: GearItem = createGearItem({
  id: 'GEAR-GLAMBOT-01',
  name: 'Glambot 4K High-Speed Robotic Arm',
  category: 'PHOTOBOOTH_GLAMBOT',
  serialNumber: 'GLM-2026-DN01',
  warehouseLocation: 'DA_NANG',
  status: 'AVAILABLE',
  standardAccessories: [
    'Dây nguồn 3 pha công nghiệp',
    'Cáp tín hiệu HDMI 10m High-Speed',
    'Màn hình cảm ứng 15 inch',
    'Chân đế chịu lực 50kg',
  ],
  accessoryCosts: {
    'Cáp tín hiệu HDMI 10m High-Speed': 450_000,
    'Dây nguồn 3 pha công nghiệp': 800_000,
  },
});

// 2. Existing Booking: Nov 15 to Nov 18
const existingBookings: RentalBooking[] = [
  createRentalBooking({
    id: 'BOOKING-101',
    gearId: glambotArm.id,
    customerName: 'VinFast Showroom Event',
    startDate: new Date('2026-11-15T08:00:00Z'),
    endDate: new Date('2026-11-18T18:00:00Z'),
    status: 'CONFIRMED',
  }),
];

// 3. New Client Requests Nov 18 (20:00) to Nov 20
// With a 12-hour turnaround buffer, Nov 18 20:00 is TOO CLOSE (Needs buffer until Nov 19 06:00)
const conflictCheck = checkGearConflict(
  glambotArm.id,
  new Date('2026-11-18T20:00:00Z'),
  new Date('2026-11-20T18:00:00Z'),
  existingBookings,
  { bufferHours: 12 }
);

console.log('Gear Booking Collision Check:', {
  hasConflict: conflictCheck.hasConflict, // true!
  reason: conflictCheck.reason,          // "Conflict with booking BOOKING-101 (buffer violation)"
});

// 4. Consumables Metering: Photobooth Thermal Paper
const meter = new ConsumablesMeter();
meter.registerItem({
  id: 'CONSUMABLE-PAPER-ROLL',
  name: 'DNP RX1HS Thermal Photo Paper 4x6 (Roll of 700 prints)',
  type: 'PHOTO_PAPER',
  currentStock: 10,
  minimumThreshold: 2,
  costPerUnitVnd: 1_250_000,
});

// Record usage during 4-hour gala: 450 prints consumed (~0.64 rolls)
meter.recordConsumption('CONSUMABLE-PAPER-ROLL', 0.64, 'Gala Dinner Prints');
const paperStatus = meter.getItem('CONSUMABLE-PAPER-ROLL')!;
console.log(`Remaining Paper Rolls: ${paperStatus.currentStock.toFixed(2)} rolls`);

// 5. Conduct Return Inspection (Handover Audit)
// Client returned the gear, but the 10m HDMI cable is missing
const auditService = new HandoverAuditService();
const inspectionReport = auditService.performCheckInInspection({
  bookingId: 'BOOKING-101',
  gear: glambotArm,
  inspectorName: 'Kỹ Thuật Viên Kho - Nguyễn Nam',
  inspectionDate: new Date(),
  missingAccessories: ['Cáp tín hiệu HDMI 10m High-Speed'],
  damagedAccessories: [],
  notes: 'Dây nguồn và màn hình nguyên vẹn, thiếu cáp HDMI 10m',
});

console.log('Return Inspection & Penalty Billing:', {
  isFullyReturned: inspectionReport.isFullyReturned,             // false
  missingCount: inspectionReport.missingAccessories.length,     // 1
  totalPenaltyVnd: `${inspectionReport.totalPenaltyVnd.toLocaleString()}₫`, // 450,000₫ deducted from deposit
});