/**
 * EXAMPLE: How to Use VIP Schedule PDF Generation
 *
 * This file demonstrates the complete flow of generating a VIP schedule PDF.
 * This is a reference example - the actual implementation is in:
 * - src/components/VIPSchedulePDF.tsx (PDF component)
 * - src/pages/VIPSchedule.tsx (integration)
 */

import { pdf } from '@react-pdf/renderer';
import { VIPSchedulePDF } from '@/components/VIPSchedulePDF';

// Example VIP data
const exampleVIP = {
  id: '123',
  name: 'John Doe',
  organization: 'Example Corporation',
  department: 'OFFICE_OF_DEVELOPMENT',
  arrivalMode: 'FLIGHT',
  expectedArrival: '2026-02-03T09:00:00Z',
  airportPickup: true,
  venueTransport: true,
  notes: 'VIP prefers electric vehicles. Dietary restriction: vegetarian.',
  flights: [
    {
      id: 'f1',
      flightNumber: 'AA123',
      departureAirport: 'JFK',
      arrivalAirport: 'LAX',
      scheduledDeparture: '2026-02-03T07:00:00Z',
      scheduledArrival: '2026-02-03T10:00:00Z',
      status: 'On Time',
    },
  ],
};

// Example schedule events
const exampleEvents = [
  {
    id: 'e1',
    title: 'Airport Pickup',
    type: 'TRANSPORT',
    status: 'SCHEDULED',
    startTime: '2026-02-03T10:00:00Z',
    endTime: '2026-02-03T11:00:00Z',
    pickupLocation: 'LAX Terminal 4',
    dropoffLocation: 'Hotel Grand Plaza',
    description: 'Pick up from arrival gate',
    driver: {
      id: 'd1',
      name: 'Mike Johnson',
    },
    vehicle: {
      id: 'v1',
      name: 'Tesla Model S',
      type: 'SEDAN',
      seatCapacity: 4,
    },
  },
  {
    id: 'e2',
    title: 'Welcome Lunch',
    type: 'MEAL',
    status: 'SCHEDULED',
    startTime: '2026-02-03T12:00:00Z',
    endTime: '2026-02-03T13:30:00Z',
    location: 'Restaurant Chez Pierre',
    description: 'Lunch with board members',
    driver: null,
    vehicle: null,
  },
  {
    id: 'e3',
    title: 'Board Meeting',
    type: 'MEETING',
    status: 'SCHEDULED',
    startTime: '2026-02-03T14:00:00Z',
    endTime: '2026-02-03T17:00:00Z',
    location: 'Conference Room A, 5th Floor',
    description: 'Q1 strategy discussion',
    driver: null,
    vehicle: null,
  },
  {
    id: 'e4',
    title: 'Airport Return',
    type: 'TRANSPORT',
    status: 'SCHEDULED',
    startTime: '2026-02-04T15:00:00Z',
    endTime: '2026-02-04T16:00:00Z',
    pickupLocation: 'Hotel Grand Plaza',
    dropoffLocation: 'LAX Terminal 4',
    description: 'Departure for flight home',
    driver: {
      id: 'd1',
      name: 'Mike Johnson',
    },
    vehicle: {
      id: 'v1',
      name: 'Tesla Model S',
      type: 'SEDAN',
      seatCapacity: 4,
    },
  },
];

/**
 * EXAMPLE 1: Basic PDF Generation
 */
export async function generateBasicPDF() {
  const blob = await pdf(
    <VIPSchedulePDF vip={exampleVIP} events={exampleEvents} />
  ).toBlob();

  // Create download link
  const url = URL.createObjectURL(blob);
  const link = document.createElement('a');
  link.href = url;
  link.download = `${exampleVIP.name.replace(/\s+/g, '_')}_Schedule.pdf`;
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
  URL.revokeObjectURL(url);
}

/**
 * EXAMPLE 2: PDF Generation with Custom Contact Info
 */
export async function generateCustomContactPDF() {
  const blob = await pdf(
    <VIPSchedulePDF
      vip={exampleVIP}
      events={exampleEvents}
      contactEmail="custom-coordinator@example.com"
      contactPhone="(555) 987-6543"
      appUrl="https://my-vip-app.com"
    />
  ).toBlob();

  // Download
  const url = URL.createObjectURL(blob);
  const link = document.createElement('a');
  link.href = url;
  link.download = 'VIP_Schedule.pdf';
  link.click();
  URL.revokeObjectURL(url);
}

/**
 * EXAMPLE 3: PDF Generation with Environment Variables
 */
export async function generateEnvConfigPDF() {
  const blob = await pdf(
    <VIPSchedulePDF
      vip={exampleVIP}
      events={exampleEvents}
      contactEmail={import.meta.env.VITE_CONTACT_EMAIL || 'coordinator@example.com'}
      contactPhone={import.meta.env.VITE_CONTACT_PHONE || '(555) 123-4567'}
      appUrl={window.location.origin}
    />
  ).toBlob();

  // Download with timestamp
  const date = new Date().toISOString().split('T')[0];
  const url = URL.createObjectURL(blob);
  const link = document.createElement('a');
  link.href = url;
  link.download = `${exampleVIP.name.replace(/\s+/g, '_')}_Schedule_${date}.pdf`;
  link.click();
  URL.revokeObjectURL(url);
}

/**
 * EXAMPLE 4: PDF Generation with Error Handling
 */
export async function generatePDFWithErrorHandling() {
  try {
    console.log('[PDF] Starting generation...');

    const blob = await pdf(
      <VIPSchedulePDF
        vip={exampleVIP}
        events={exampleEvents}
        contactEmail={import.meta.env.VITE_CONTACT_EMAIL}
        contactPhone={import.meta.env.VITE_CONTACT_PHONE}
        appUrl={window.location.origin}
      />
    ).toBlob();

    console.log('[PDF] Generation successful, size:', blob.size, 'bytes');

    // Create download
    const url = URL.createObjectURL(blob);
    const link = document.createElement('a');
    link.href = url;
    link.download = `${exampleVIP.name.replace(/\s+/g, '_')}_Schedule.pdf`;
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);

    // Clean up
    URL.revokeObjectURL(url);

    console.log('[PDF] Download complete');
    return true;
  } catch (error) {
    console.error('[PDF] Generation failed:', error);
    alert('Failed to generate PDF. Please try again.');
    return false;
  }
}

/**
 * EXAMPLE 5: React Component Integration
 */
export function VIPScheduleExampleComponent() {
  const handleExportPDF = async () => {
    try {
      const blob = await pdf(
        <VIPSchedulePDF
          vip={exampleVIP}
          events={exampleEvents}
          contactEmail={import.meta.env.VITE_CONTACT_EMAIL}
          contactPhone={import.meta.env.VITE_CONTACT_PHONE}
          appUrl={window.location.origin}
        />
      ).toBlob();

      const url = URL.createObjectURL(blob);
      const link = document.createElement('a');
      link.href = url;
      link.download = `${exampleVIP.name.replace(/\s+/g, '_')}_Schedule.pdf`;
      link.click();
      URL.revokeObjectURL(url);
    } catch (error) {
      console.error('[PDF] Export failed:', error);
    }
  };

  return (
    <button
      onClick={handleExportPDF}
      className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700"
    >
      Export PDF
    </button>
  );
}

/**
 * EXAMPLE 6: Preview PDF in New Tab (instead of download)
 */
export async function previewPDFInNewTab() {
  const blob = await pdf(
    <VIPSchedulePDF vip={exampleVIP} events={exampleEvents} />
  ).toBlob();

  // Open in new tab instead of downloading
  const url = URL.createObjectURL(blob);
  window.open(url, '_blank');

  // Clean up after a delay (user should have opened it by then)
  setTimeout(() => URL.revokeObjectURL(url), 10000);
}

/**
 * Expected PDF Output Structure:
 *
 * ┌────────────────────────────────────────────────────────────┐
 * │ HEADER                                                     │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ John Doe                                             │  │
 * │ │ Example Corporation                                  │  │
 * │ │ OFFICE OF DEVELOPMENT • VIP Schedule & Itinerary     │  │
 * │ │                                                       │  │
 * │ │ ⚠️ DOCUMENT GENERATED AT:                             │  │
 * │ │ Saturday, February 1, 2026, 2:00 PM EST              │  │
 * │ │ This is a snapshot. For latest: https://app.com      │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ VIP INFORMATION                                            │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ Arrival Mode: FLIGHT    Expected: Feb 3, 9:00 AM     │  │
 * │ │ Airport Pickup: Yes     Venue Transport: Yes         │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ FLIGHT INFORMATION                                         │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ Flight AA123                                         │  │
 * │ │ JFK → LAX                                            │  │
 * │ │ Arrives: Feb 3, 10:00 AM                            │  │
 * │ │ Status: On Time                                      │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ SPECIAL NOTES                                              │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ VIP prefers electric vehicles. Dietary: vegetarian   │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ SCHEDULE & ITINERARY                                       │
 * │                                                            │
 * │ Monday, February 3, 2026                                   │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ 10:00 AM - 11:00 AM              [TRANSPORT]         │  │
 * │ │ Airport Pickup                                       │  │
 * │ │ 📍 LAX Terminal 4 → Hotel Grand Plaza               │  │
 * │ │ 👤 Driver: Mike Johnson                              │  │
 * │ │ 🚗 Tesla Model S (SEDAN)                             │  │
 * │ │ [SCHEDULED]                                          │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ ┌──────────────────────────────────────────────────────┐  │
 * │ │ 12:00 PM - 1:30 PM               [MEAL]              │  │
 * │ │ Welcome Lunch                                        │  │
 * │ │ 📍 Restaurant Chez Pierre                           │  │
 * │ │ [SCHEDULED]                                          │  │
 * │ └──────────────────────────────────────────────────────┘  │
 * │                                                            │
 * │ ... more events ...                                        │
 * │                                                            │
 * ├────────────────────────────────────────────────────────────┤
 * │ FOOTER                                                     │
 * │ For Questions: coordinator@vip-board.com                   │
 * │ Phone: (555) 123-4567                   Page 1 of 2        │
 * └────────────────────────────────────────────────────────────┘
 */