/**
 * Bookings List Page
 *
 * Display all bookings (standard + CSV) with filters and search
 */

'use client';

import { useState } from 'react';
import { useQuery } from '@tanstack/react-query';
import { listBookings, listCsvBookings } from '@/lib/api';
import Link from 'next/link';

type BookingType = 'all' | 'standard' | 'csv';

export default function BookingsListPage() {
  const [searchTerm, setSearchTerm] = useState('');
  const [statusFilter, setStatusFilter] = useState('');
  const [bookingType, setBookingType] = useState<BookingType>('csv'); // Start with CSV bookings
  const [page, setPage] = useState(1);

  // Fetch standard bookings
  const { data: standardData, isLoading: standardLoading, error: standardError } = useQuery({
    queryKey: ['bookings', page, statusFilter, searchTerm],
    queryFn: () =>
      listBookings({
        page,
        limit: 10,
        status: statusFilter || undefined,
      }),
    enabled: bookingType === 'all' || bookingType === 'standard',
    retry: false, // Don't retry if it fails
  });

  // Fetch CSV bookings
  const { data: csvData, isLoading: csvLoading, error: csvError } = useQuery({
    queryKey: ['csv-bookings', page, statusFilter],
    queryFn: () =>
      listCsvBookings({
        page,
        limit: 10,
        status: statusFilter as 'PENDING' | 'ACCEPTED' | 'REJECTED' | undefined,
      }),
    enabled: bookingType === 'all' || bookingType === 'csv',
  });

  // Log errors for debugging
  if (standardError) console.error('Standard bookings error:', standardError);
  if (csvError) console.error('CSV bookings error:', csvError);

  const isLoading = standardLoading || csvLoading;

  // Combine bookings based on filter
  const getCombinedBookings = () => {
    if (bookingType === 'standard') {
      return (standardData?.bookings || []).map(b => ({ ...b, type: 'standard' as const }));
    }
    if (bookingType === 'csv') {
      return (csvData?.bookings || []).map(b => ({ ...b, type: 'csv' as const }));
    }
    // For 'all', combine both
    const standard = (standardData?.bookings || []).map(b => ({ ...b, type: 'standard' as const }));
    const csv = (csvData?.bookings || []).map(b => ({ ...b, type: 'csv' as const }));
    return [...standard, ...csv].sort((a, b) => {
      const dateA = new Date((a as any).createdAt || (a as any).requestedAt || 0).getTime();
      const dateB = new Date((b as any).createdAt || (b as any).requestedAt || 0).getTime();
      return dateB - dateA;
    });
  };

  const allBookings = getCombinedBookings();

  const statusOptions = [
    { value: '', label: 'Tous les statuts' },
    // Standard booking statuses
    { value: 'draft', label: 'Brouillon' },
    { value: 'pending', label: 'En attente' },
    { value: 'confirmed', label: 'Confirmé' },
    { value: 'in_transit', label: 'En transit' },
    { value: 'delivered', label: 'Livré' },
    { value: 'cancelled', label: 'Annulé' },
    // CSV booking statuses
    { value: 'PENDING', label: 'En attente (CSV)' },
    { value: 'ACCEPTED', label: 'Accepté (CSV)' },
    { value: 'REJECTED', label: 'Refusé (CSV)' },
  ];

  const getStatusColor = (status: string) => {
    const colors: Record<string, string> = {
      // Standard statuses
      draft: 'bg-gray-100 text-gray-800',
      pending: 'bg-yellow-100 text-yellow-800',
      confirmed: 'bg-green-100 text-green-800',
      in_transit: 'bg-blue-100 text-blue-800',
      delivered: 'bg-purple-100 text-purple-800',
      cancelled: 'bg-red-100 text-red-800',
      // CSV statuses
      PENDING: 'bg-yellow-100 text-yellow-800',
      ACCEPTED: 'bg-green-100 text-green-800',
      REJECTED: 'bg-red-100 text-red-800',
    };
    return colors[status] || 'bg-gray-100 text-gray-800';
  };

  const getStatusLabel = (status: string) => {
    const labels: Record<string, string> = {
      // Standard statuses
      draft: 'Brouillon',
      pending: 'En attente',
      confirmed: 'Confirmé',
      in_transit: 'En transit',
      delivered: 'Livré',
      cancelled: 'Annulé',
      // CSV statuses
      PENDING: 'En attente',
      ACCEPTED: 'Accepté',
      REJECTED: 'Refusé',
    };
    return labels[status] || status;
  };

  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold text-gray-900">Réservations</h1>
          <p className="text-sm text-gray-500 mt-1">Gérez et suivez vos envois</p>
        </div>
        <Link
          href="/dashboard/search-advanced"
          className="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700"
        >
          <span className="mr-2">➕</span>
          Nouvelle Réservation
        </Link>
      </div>

      {/* Filters */}
      <div className="bg-white rounded-lg shadow p-4">
        <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
          <div className="md:col-span-2">
            <label htmlFor="search" className="sr-only">
              Rechercher
            </label>
            <div className="relative">
              <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                <svg
                  className="h-5 w-5 text-gray-400"
                  fill="none"
                  stroke="currentColor"
                  viewBox="0 0 24 24"
                >
                  <path
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    strokeWidth={2}
                    d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
                  />
                </svg>
              </div>
              <input
                type="text"
                id="search"
                value={searchTerm}
                onChange={e => setSearchTerm(e.target.value)}
                className="block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md leading-5 bg-white placeholder-gray-500 focus:outline-none focus:placeholder-gray-400 focus:ring-1 focus:ring-blue-500 focus:border-blue-500 sm:text-sm"
                placeholder="Rechercher par numéro de réservation..."
              />
            </div>
          </div>
          <div>
            <label htmlFor="bookingType" className="sr-only">
              Type de réservation
            </label>
            <select
              id="bookingType"
              value={bookingType}
              onChange={e => setBookingType(e.target.value as BookingType)}
              className="block w-full pl-3 pr-10 py-2 text-base border-gray-300 focus:outline-none focus:ring-blue-500 focus:border-blue-500 sm:text-sm rounded-md"
            >
              <option value="all">Toutes les réservations</option>
              <option value="standard">Réservations standard</option>
              <option value="csv">Réservations CSV</option>
            </select>
          </div>
          <div>
            <label htmlFor="status" className="sr-only">
              Statut
            </label>
            <select
              id="status"
              value={statusFilter}
              onChange={e => setStatusFilter(e.target.value)}
              className="block w-full pl-3 pr-10 py-2 text-base border-gray-300 focus:outline-none focus:ring-blue-500 focus:border-blue-500 sm:text-sm rounded-md"
            >
              {statusOptions.map(option => (
                <option key={option.value} value={option.value}>
                  {option.label}
                </option>
              ))}
            </select>
          </div>
        </div>
      </div>

      {/* Bookings Table */}
      <div className="bg-white rounded-lg shadow overflow-hidden">
        {isLoading ? (
          <div className="px-6 py-12 text-center text-gray-500">
            <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto mb-4"></div>
            Chargement des réservations...
          </div>
        ) : allBookings && allBookings.length > 0 ? (
          <>
            <div className="overflow-x-auto">
              <table className="min-w-full divide-y divide-gray-200">
                <thead className="bg-gray-50">
                  <tr>
                    <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                      Palettes/Colis
                    </th>
                    <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                      Poids
                    </th>
                    <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                      Route
                    </th>
                    <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                      Statut
                    </th>
                    <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                      Date
                    </th>
                    <th className="px-6 py-3 text-right text-xs font-medium text-gray-500 uppercase tracking-wider">
                      N° Devis
                    </th>
                  </tr>
                </thead>
                <tbody className="bg-white divide-y divide-gray-200">
                  {allBookings.map((booking: any) => (
                    <tr key={`${booking.type}-${booking.id}`} className="hover:bg-gray-50">
                      <td className="px-6 py-4 whitespace-nowrap">
                        <div className="text-sm font-medium text-gray-900">
                          {booking.type === 'csv'
                            ? `${booking.palletCount} palette${booking.palletCount > 1 ? 's' : ''}`
                            : `${booking.containers?.length || 0} conteneur${booking.containers?.length > 1 ? 's' : ''}`}
                        </div>
                        <div className="text-xs text-gray-500">
                          {booking.type === 'csv' ? 'LCL' : booking.containerType || 'FCL'}
                        </div>
                      </td>
                      <td className="px-6 py-4 whitespace-nowrap">
                        <div className="text-sm font-medium text-gray-900">
                          {booking.type === 'csv'
                            ? `${booking.weightKG} kg`
                            : booking.totalWeight
                            ? `${booking.totalWeight} kg`
                            : 'N/A'}
                        </div>
                        <div className="text-xs text-gray-500">
                          {booking.type === 'csv'
                            ? `${booking.volumeCBM} CBM`
                            : booking.totalVolume
                            ? `${booking.totalVolume} CBM`
                            : ''}
                        </div>
                      </td>
                      <td className="px-6 py-4">
                        <div className="text-sm text-gray-900">
                          {booking.type === 'csv'
                            ? `${booking.origin} → ${booking.destination}`
                            : booking.route || 'N/A'}
                        </div>
                        <div className="text-sm text-gray-500">
                          {booking.type === 'csv'
                            ? `${booking.carrierName}`
                            : booking.carrier || ''}
                        </div>
                      </td>
                      <td className="px-6 py-4 whitespace-nowrap">
                        <span
                          className={`px-2 py-1 inline-flex text-xs leading-5 font-semibold rounded-full ${getStatusColor(
                            booking.status
                          )}`}
                        >
                          {getStatusLabel(booking.status)}
                        </span>
                      </td>
                      <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                        {(booking.createdAt || booking.requestedAt)
                          ? new Date(booking.createdAt || booking.requestedAt).toLocaleDateString('fr-FR', {
                              day: '2-digit',
                              month: '2-digit',
                              year: 'numeric',
                            })
                          : 'N/A'}
                      </td>
                      <td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
                        <Link
                          href={
                            booking.type === 'csv'
                              ? `/dashboard/csv-bookings/${booking.id}`
                              : `/dashboard/bookings/${booking.id}`
                          }
                          className="text-blue-600 hover:text-blue-900"
                        >
                          {booking.type === 'csv'
                            ? `#${booking.bookingId || booking.id.slice(0, 8).toUpperCase()}`
                            : booking.bookingNumber || `#${booking.id.slice(0, 8).toUpperCase()}`}
                        </Link>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>

            {/* Pagination */}
            {((standardData?.total || 0) + (csvData?.total || 0)) > 10 && (
              <div className="bg-white px-4 py-3 flex items-center justify-between border-t border-gray-200 sm:px-6">
                <div className="flex-1 flex justify-between sm:hidden">
                  <button
                    onClick={() => setPage(Math.max(1, page - 1))}
                    disabled={page === 1}
                    className="relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 disabled:bg-gray-100 disabled:cursor-not-allowed"
                  >
                    Précédent
                  </button>
                  <button
                    onClick={() => setPage(page + 1)}
                    disabled={page * 10 >= ((standardData?.total || 0) + (csvData?.total || 0))}
                    className="ml-3 relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 disabled:bg-gray-100 disabled:cursor-not-allowed"
                  >
                    Suivant
                  </button>
                </div>
                <div className="hidden sm:flex-1 sm:flex sm:items-center sm:justify-between">
                  <div>
                    <p className="text-sm text-gray-700">
                      Affichage de <span className="font-medium">{(page - 1) * 10 + 1}</span> à{' '}
                      <span className="font-medium">
                        {Math.min(page * 10, (standardData?.total || 0) + (csvData?.total || 0))}
                      </span>{' '}
                      sur{' '}
                      <span className="font-medium">
                        {(standardData?.total || 0) + (csvData?.total || 0)}
                      </span>{' '}
                      résultats
                    </p>
                  </div>
                  <div className="flex space-x-2">
                    <button
                      onClick={() => setPage(Math.max(1, page - 1))}
                      disabled={page === 1}
                      className="relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 disabled:bg-gray-100 disabled:cursor-not-allowed"
                    >
                      Précédent
                    </button>
                    <button
                      onClick={() => setPage(page + 1)}
                      disabled={page * 10 >= ((standardData?.total || 0) + (csvData?.total || 0))}
                      className="relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 disabled:bg-gray-100 disabled:cursor-not-allowed"
                    >
                      Suivant
                    </button>
                  </div>
                </div>
              </div>
            )}
          </>
        ) : (
          <div className="px-6 py-12 text-center">
            <svg
              className="mx-auto h-12 w-12 text-gray-400"
              fill="none"
              stroke="currentColor"
              viewBox="0 0 24 24"
            >
              <path
                strokeLinecap="round"
                strokeLinejoin="round"
                strokeWidth={2}
                d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"
              />
            </svg>
            <h3 className="mt-2 text-sm font-medium text-gray-900">Aucune réservation trouvée</h3>
            <p className="mt-1 text-sm text-gray-500">
              {searchTerm || statusFilter
                ? 'Essayez d\'ajuster vos filtres'
                : 'Commencez par créer votre première réservation'}
            </p>
            <div className="mt-6">
              <Link
                href="/dashboard/search-advanced"
                className="inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700"
              >
                <span className="mr-2">➕</span>
                Nouvelle Réservation
              </Link>
            </div>
          </div>
        )}
      </div>
    </div>
  );
}