import { getServerSession } from 'next-auth';
import { authOptions } from '@/lib/auth';
import { prisma } from '@/lib/prisma';
import { redirect } from 'next/navigation';
import DashboardSidebar from '@/components/DashboardSidebar';
import BookingAutomationPanel from '@/components/BookingAutomationPanel';
import { formatDate, formatDateTime } from '@/lib/date-utils';
import Link from 'next/link';

export default async function BookingDetailPage({ params }: { params: { id: string } }) {
  const session = await getServerSession(authOptions);

  if (!session || session.user.role !== 'ADMIN') {
    redirect('/auth/signin');
  }

  const booking = await prisma.booking.findUnique({
    where: { id: params.id },
    include: {
      location: true,
      photobox: true,
    },
  });

  if (!booking) {
    redirect('/dashboard/bookings');
  }

  const getStatusColor = (status: string) => {
    switch (status) {
      case 'RESERVED': return 'bg-yellow-500/20 text-yellow-400 border border-yellow-500/50';
      case 'CONFIRMED': return 'bg-green-500/20 text-green-400 border border-green-500/50';
      case 'COMPLETED': return 'bg-blue-500/20 text-blue-400 border border-blue-500/50';
      case 'CANCELLED': return 'bg-red-500/20 text-red-400 border border-red-500/50';
      default: return 'bg-gray-500/20 text-gray-400 border border-gray-500/50';
    }
  };

  const getStatusLabel = (status: string) => {
    switch (status) {
      case 'RESERVED': return 'Reserviert';
      case 'CONFIRMED': return 'Bestätigt';
      case 'COMPLETED': return 'Abgeschlossen';
      case 'CANCELLED': return 'Storniert';
      default: return status;
    }
  };

  return (
    <div className="min-h-screen bg-gradient-to-br from-gray-900 via-gray-800 to-gray-900">
      <div className="flex">
        <DashboardSidebar user={session.user} />
        <main className="flex-1 p-8">
          <div className="max-w-6xl mx-auto">
            {/* Header */}
            <div className="mb-8">
              <div className="flex items-center justify-between mb-4">
                <div>
                  <h1 className="text-3xl font-bold text-white">{booking.bookingNumber}</h1>
                  <p className="text-gray-400 mt-1">{booking.customerName}</p>
                </div>
                <div className="flex items-center gap-3">
                  <Link
                    href={`/dashboard/bookings/${booking.id}/edit`}
                    className="px-4 py-2 bg-gray-700 hover:bg-gray-600 text-white rounded-lg text-sm font-medium transition-colors"
                  >
                    Bearbeiten
                  </Link>
                  <div className={`px-4 py-2 rounded-lg ${getStatusColor(booking.status)}`}>
                    {getStatusLabel(booking.status)}
                  </div>
                </div>
              </div>
            </div>

            {/* Automation Panel */}
            <div className="mb-8">
              <BookingAutomationPanel booking={booking} invoiceType={booking.invoiceType} />
            </div>

            {/* Booking Details */}
            <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
              {/* Customer Info */}
              <div className="bg-gradient-to-br from-gray-800 to-gray-900 border border-gray-700 rounded-xl p-6 shadow-lg">
                <h3 className="text-xl font-bold text-white mb-4">Kundendaten</h3>
                <div className="space-y-3 text-sm">
                  <div>
                    <span className="text-gray-400">Name:</span>
                    <span className="text-white ml-2 font-medium">{booking.customerName}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">E-Mail:</span>
                    <span className="text-white ml-2">{booking.customerEmail}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Telefon:</span>
                    <span className="text-white ml-2">{booking.customerPhone}</span>
                  </div>
                  {booking.customerAddress && (
                    <div>
                      <span className="text-gray-400">Adresse:</span>
                      <span className="text-white ml-2">
                        {booking.customerAddress}, {booking.customerZip} {booking.customerCity}
                      </span>
                    </div>
                  )}
                  {booking.companyName && (
                    <div>
                      <span className="text-gray-400">Firma:</span>
                      <span className="text-white ml-2">{booking.companyName}</span>
                    </div>
                  )}
                </div>
              </div>

              {/* Event Info */}
              <div className="bg-gradient-to-br from-gray-800 to-gray-900 border border-gray-700 rounded-xl p-6 shadow-lg">
                <h3 className="text-xl font-bold text-white mb-4">Event-Details</h3>
                <div className="space-y-3 text-sm">
                  <div>
                    <span className="text-gray-400">Datum:</span>
                    <span className="text-white ml-2 font-medium">{formatDate(booking.eventDate)}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Location:</span>
                    <span className="text-white ml-2">{booking.eventLocation || '-'}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Adresse:</span>
                    <span className="text-white ml-2">
                      {booking.eventAddress}, {booking.eventZip} {booking.eventCity}
                    </span>
                  </div>
                  <div>
                    <span className="text-gray-400">Aufbau Start:</span>
                    <span className="text-white ml-2">{formatDateTime(booking.setupTimeStart)}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Aufbau spätestens:</span>
                    <span className="text-white ml-2">{formatDateTime(booking.setupTimeLatest)}</span>
                  </div>
                  {booking.dismantleTimeEarliest && (
                    <div>
                      <span className="text-gray-400">Abbau ab:</span>
                      <span className="text-white ml-2">{formatDateTime(booking.dismantleTimeEarliest)}</span>
                    </div>
                  )}
                  {booking.dismantleTimeLatest && (
                    <div>
                      <span className="text-gray-400">Abbau spätestens:</span>
                      <span className="text-white ml-2">{formatDateTime(booking.dismantleTimeLatest)}</span>
                    </div>
                  )}
                  {booking.notes && (
                    <div className="pt-3 border-t border-gray-700">
                      <span className="text-gray-400">Notizen:</span>
                      <p className="text-white mt-1 whitespace-pre-wrap">{booking.notes}</p>
                    </div>
                  )}
                </div>
              </div>

              {/* Photobox & Pricing */}
              <div className="bg-gradient-to-br from-gray-800 to-gray-900 border border-gray-700 rounded-xl p-6 shadow-lg">
                <h3 className="text-xl font-bold text-white mb-4">Fotobox & Preis</h3>
                <div className="space-y-3 text-sm">
                  <div>
                    <span className="text-gray-400">Modell:</span>
                    <span className="text-white ml-2 font-medium">{booking.photobox?.model || '-'}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Serial Number:</span>
                    <span className="text-white ml-2">{booking.photobox?.serialNumber || '-'}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Druckflatrate:</span>
                    <span className="text-white ml-2">{booking.withPrintFlat ? 'Ja' : 'Nein'}</span>
                  </div>
                  {booking.distance && (
                    <div>
                      <span className="text-gray-400">Entfernung:</span>
                      <span className="text-white ml-2">{booking.distance.toFixed(1)} km</span>
                    </div>
                  )}
                  {booking.calculatedPrice && (
                    <div className="pt-3 border-t border-gray-700">
                      <span className="text-gray-400">Gesamtpreis:</span>
                      <span className="text-2xl text-pink-400 ml-2 font-bold">
                        {booking.calculatedPrice.toFixed(2)} €
                      </span>
                    </div>
                  )}
                </div>
              </div>

              {/* Location Info */}
              <div className="bg-gradient-to-br from-gray-800 to-gray-900 border border-gray-700 rounded-xl p-6 shadow-lg">
                <h3 className="text-xl font-bold text-white mb-4">Standort</h3>
                <div className="space-y-3 text-sm">
                  <div>
                    <span className="text-gray-400">Name:</span>
                    <span className="text-white ml-2 font-medium">{booking.location?.name}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Stadt:</span>
                    <span className="text-white ml-2">{booking.location?.city}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Website:</span>
                    <span className="text-white ml-2">{booking.location?.websiteUrl}</span>
                  </div>
                  <div>
                    <span className="text-gray-400">Kontakt:</span>
                    <span className="text-white ml-2">{booking.location?.contactEmail}</span>
                  </div>
                </div>
              </div>
            </div>

            {/* LexOffice IDs (if present) */}
            {(booking.lexofficeContactId || booking.lexofficeOfferId || booking.lexofficeConfirmationId) && (
              <div className="mt-6 bg-gradient-to-br from-gray-800 to-gray-900 border border-gray-700 rounded-xl p-6 shadow-lg">
                <h3 className="text-xl font-bold text-white mb-4">LexOffice Integration</h3>
                <div className="grid grid-cols-1 md:grid-cols-3 gap-4 text-sm">
                  {booking.lexofficeContactId && (
                    <div>
                      <span className="text-gray-400">Kontakt-ID:</span>
                      <span className="text-white ml-2 font-mono text-xs">{booking.lexofficeContactId}</span>
                    </div>
                  )}
                  {booking.lexofficeOfferId && (
                    <div>
                      <span className="text-gray-400">Angebots-ID:</span>
                      <span className="text-white ml-2 font-mono text-xs">{booking.lexofficeOfferId}</span>
                    </div>
                  )}
                  {booking.lexofficeConfirmationId && (
                    <div>
                      <span className="text-gray-400">Bestätigungs-ID:</span>
                      <span className="text-white ml-2 font-mono text-xs">{booking.lexofficeConfirmationId}</span>
                    </div>
                  )}
                </div>
              </div>
            )}
          </div>
        </main>
      </div>
    </div>
  );
}