'use client';

import { useState, useEffect } from 'react';
import { useRouter } from 'next/navigation';
import { useLanguage } from '@/context/LanguageContext';
import { useAuth } from '@/context/AuthContext';
import Card from '@/components/ui/Card';
import Button from '@/components/ui/Button';
import { dashboardApi, DashboardSummary, NextEventInfo, UserTicket, UserPayment } from '@/lib/api';
import { formatDateLong, formatTime } from '@/lib/utils';
import toast from 'react-hot-toast';
import Link from 'next/link';
import { 
  socialConfig, 
  getWhatsAppUrl, 
  getInstagramUrl, 
  getTelegramUrl 
} from '@/lib/socialLinks';

// Tab components
import TicketsTab from './components/TicketsTab';
import PaymentsTab from './components/PaymentsTab';
import ProfileTab from './components/ProfileTab';
import SecurityTab from './components/SecurityTab';

type Tab = 'overview' | 'tickets' | 'payments' | 'profile' | 'security';

export default function DashboardPage() {
  const router = useRouter();
  const { t, locale: language } = useLanguage();
  const { user, isLoading: authLoading, token } = useAuth();
  
  const [activeTab, setActiveTab] = useState<Tab>('overview');
  const [summary, setSummary] = useState<DashboardSummary | null>(null);
  const [nextEvent, setNextEvent] = useState<NextEventInfo | null>(null);
  const [tickets, setTickets] = useState<UserTicket[]>([]);
  const [payments, setPayments] = useState<UserPayment[]>([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    if (!authLoading && !user) {
      router.push('/login');
      return;
    }
    
    if (user && token) {
      loadDashboardData();
    }
  }, [user, authLoading, token]);

  const loadDashboardData = async () => {
    setLoading(true);
    try {
      const [summaryRes, nextEventRes, ticketsRes, paymentsRes] = await Promise.all([
        dashboardApi.getSummary(),
        dashboardApi.getNextEvent(),
        dashboardApi.getTickets(),
        dashboardApi.getPayments(),
      ]);
      
      setSummary(summaryRes.summary);
      setNextEvent(nextEventRes.nextEvent);
      setTickets(ticketsRes.tickets);
      setPayments(paymentsRes.payments);
    } catch (error: any) {
      console.error('Failed to load dashboard:', error);
      toast.error('Failed to load dashboard data');
    } finally {
      setLoading(false);
    }
  };

  const tabs: { id: Tab; label: string }[] = [
    { id: 'overview', label: language === 'es' ? 'Resumen' : 'Overview' },
    { id: 'tickets', label: language === 'es' ? 'Mis Entradas' : 'My Tickets' },
    { id: 'payments', label: language === 'es' ? 'Pagos y Facturas' : 'Payments & Invoices' },
    { id: 'profile', label: language === 'es' ? 'Perfil' : 'Profile' },
    { id: 'security', label: language === 'es' ? 'Seguridad' : 'Security' },
  ];

  if (authLoading || !user) {
    return (
      <div className="section-padding min-h-[70vh] flex items-center justify-center">
        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-secondary-blue"></div>
      </div>
    );
  }

  const formatDate = (dateStr: string) => formatDateLong(dateStr, language as 'en' | 'es');
  const fmtTime = (dateStr: string) => formatTime(dateStr, language as 'en' | 'es');

  return (
    <div className="section-padding min-h-[70vh]">
      <div className="container-page">
        {/* Welcome Header */}
        <div className="mb-8">
          <h1 className="text-3xl font-bold mb-2">
            {language === 'es' ? `Hola, ${user.name}!` : `Welcome, ${user.name}!`}
          </h1>
          {summary && (
            <p className="text-gray-600">
              {language === 'es' 
                ? `Miembro desde hace ${summary.user.membershipDays} días`
                : `Member for ${summary.user.membershipDays} days`
              }
            </p>
          )}
        </div>

        {/* Tab Navigation */}
        <div className="border-b border-gray-200 mb-6">
          <nav className="flex gap-4 -mb-px overflow-x-auto">
            {tabs.map((tab) => (
              <button
                key={tab.id}
                onClick={() => setActiveTab(tab.id)}
                className={`whitespace-nowrap pb-3 px-1 border-b-2 font-medium text-sm transition-colors ${
                  activeTab === tab.id
                    ? 'border-secondary-blue text-secondary-blue'
                    : 'border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300'
                }`}
              >
                {tab.label}
              </button>
            ))}
          </nav>
        </div>

        {/* Tab Content */}
        {loading ? (
          <div className="flex justify-center py-12">
            <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-secondary-blue"></div>
          </div>
        ) : (
          <>
            {activeTab === 'overview' && (
              <OverviewTab
                summary={summary}
                nextEvent={nextEvent}
                tickets={tickets}
                language={language}
                formatDate={formatDate}
                formatTime={formatTime}
              />
            )}
            
            {activeTab === 'tickets' && (
              <TicketsTab tickets={tickets} language={language} />
            )}
            
            {activeTab === 'payments' && (
              <PaymentsTab payments={payments} language={language} />
            )}
            
            {activeTab === 'profile' && (
              <ProfileTab onUpdate={loadDashboardData} />
            )}
            
            {activeTab === 'security' && (
              <SecurityTab />
            )}
          </>
        )}
      </div>
    </div>
  );
}

// Overview Tab Component
function OverviewTab({
  summary,
  nextEvent,
  tickets,
  language,
  formatDate,
  formatTime,
}: {
  summary: DashboardSummary | null;
  nextEvent: NextEventInfo | null;
  tickets: UserTicket[];
  language: string;
  formatDate: (date: string) => string;
  formatTime: (date: string) => string;
}) {
  return (
    <div className="space-y-6">
      {/* Stats Cards */}
      {summary && (
        <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
          <Card className="p-4 text-center">
            <div className="text-3xl font-bold text-secondary-blue">{summary.stats.totalTickets}</div>
            <div className="text-sm text-gray-600">
              {language === 'es' ? 'Total Entradas' : 'Total Tickets'}
            </div>
          </Card>
          <Card className="p-4 text-center">
            <div className="text-3xl font-bold text-green-600">{summary.stats.confirmedTickets}</div>
            <div className="text-sm text-gray-600">
              {language === 'es' ? 'Confirmadas' : 'Confirmed'}
            </div>
          </Card>
          <Card className="p-4 text-center">
            <div className="text-3xl font-bold text-purple-600">{summary.stats.upcomingEvents}</div>
            <div className="text-sm text-gray-600">
              {language === 'es' ? 'Próximos' : 'Upcoming'}
            </div>
          </Card>
          <Card className="p-4 text-center">
            <div className="text-3xl font-bold text-orange-500">{summary.stats.pendingPayments}</div>
            <div className="text-sm text-gray-600">
              {language === 'es' ? 'Pagos Pendientes' : 'Pending Payments'}
            </div>
          </Card>
        </div>
      )}

      {/* Next Event Card */}
      {nextEvent ? (
        <Card className="p-6">
          <h3 className="text-lg font-semibold mb-4">
            {language === 'es' ? 'Tu Próximo Evento' : 'Your Next Event'}
          </h3>
          <div className="flex flex-col md:flex-row gap-6">
            {nextEvent.event.bannerUrl && (
              <div className="w-full md:w-48 h-32 rounded-lg overflow-hidden">
                <img
                  src={nextEvent.event.bannerUrl}
                  alt={nextEvent.event.title}
                  className="w-full h-full object-cover"
                />
              </div>
            )}
            <div className="flex-1">
              <h4 className="text-xl font-bold mb-2">
                {language === 'es' && nextEvent.event.titleEs 
                  ? nextEvent.event.titleEs 
                  : nextEvent.event.title}
              </h4>
              <div className="space-y-2 text-gray-600">
                <p>
                  <span className="font-medium">
                    {language === 'es' ? 'Fecha:' : 'Date:'}
                  </span>{' '}
                  {formatDate(nextEvent.event.startDatetime)}
                </p>
                <p>
                  <span className="font-medium">
                    {language === 'es' ? 'Hora:' : 'Time:'}
                  </span>{' '}
                  {formatTime(nextEvent.event.startDatetime)}
                </p>
                <p>
                  <span className="font-medium">
                    {language === 'es' ? 'Lugar:' : 'Location:'}
                  </span>{' '}
                  {nextEvent.event.location}
                </p>
                <p>
                  <span className="font-medium">
                    {language === 'es' ? 'Estado:' : 'Status:'}
                  </span>{' '}
                  <span className={`inline-flex px-2 py-1 text-xs rounded-full ${
                    nextEvent.payment?.status === 'paid'
                      ? 'bg-green-100 text-green-800'
                      : 'bg-yellow-100 text-yellow-800'
                  }`}>
                    {nextEvent.payment?.status === 'paid' 
                      ? (language === 'es' ? 'Pagado' : 'Paid')
                      : (language === 'es' ? 'Pendiente' : 'Pending')}
                  </span>
                </p>
              </div>
              <div className="mt-4 flex gap-2">
                <Link href={`/booking/success/${nextEvent.ticket.id}`}>
                  <Button size="sm">
                    {language === 'es' ? 'Ver Entrada' : 'View Ticket'}
                  </Button>
                </Link>
                {nextEvent.event.locationUrl && (
                  <a
                    href={nextEvent.event.locationUrl}
                    target="_blank"
                    rel="noopener noreferrer"
                  >
                    <Button variant="outline" size="sm">
                      {language === 'es' ? 'Ver Mapa' : 'View Map'}
                    </Button>
                  </a>
                )}
              </div>
            </div>
          </div>
        </Card>
      ) : (
        <Card className="p-6 text-center">
          <p className="text-gray-600 mb-4">
            {language === 'es' 
              ? 'No tienes eventos próximos' 
              : 'You have no upcoming events'}
          </p>
          <Link href="/events">
            <Button>
              {language === 'es' ? 'Explorar Eventos' : 'Explore Events'}
            </Button>
          </Link>
        </Card>
      )}

      {/* Recent Tickets */}
      {tickets.length > 0 && (
        <Card className="p-6">
          <h3 className="text-lg font-semibold mb-4">
            {language === 'es' ? 'Entradas Recientes' : 'Recent Tickets'}
          </h3>
          <div className="space-y-3">
            {tickets.slice(0, 3).map((ticket) => (
              <div
                key={ticket.id}
                className="flex items-center justify-between p-3 bg-gray-50 rounded-lg"
              >
                <div>
                  <p className="font-medium">
                    {language === 'es' && ticket.event?.titleEs
                      ? ticket.event.titleEs
                      : ticket.event?.title || 'Event'}
                  </p>
                  <p className="text-sm text-gray-600">
                    {ticket.event?.startDatetime
                      ? formatDate(ticket.event.startDatetime)
                      : ''}
                  </p>
                </div>
                <span className={`px-2 py-1 text-xs rounded-full ${
                  ticket.status === 'confirmed' || ticket.status === 'checked_in'
                    ? 'bg-green-100 text-green-800'
                    : ticket.status === 'cancelled'
                    ? 'bg-red-100 text-red-800'
                    : 'bg-yellow-100 text-yellow-800'
                }`}>
                  {ticket.status}
                </span>
              </div>
            ))}
          </div>
          {tickets.length > 3 && (
            <div className="mt-4 text-center">
              <Button variant="outline" size="sm" onClick={() => {}}>
                {language === 'es' ? 'Ver Todas' : 'View All'}
              </Button>
            </div>
          )}
        </Card>
      )}

      {/* Community Links */}
      <Card className="p-6">
        <h3 className="text-lg font-semibold mb-4">
          {language === 'es' ? 'Comunidad' : 'Community'}
        </h3>
        <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
          {getWhatsAppUrl(socialConfig.whatsapp) && (
            <a
              href={getWhatsAppUrl(socialConfig.whatsapp)!}
              target="_blank"
              rel="noopener noreferrer"
              className="flex items-center gap-3 p-3 bg-green-50 rounded-lg hover:bg-green-100 transition-colors"
            >
              <div className="w-10 h-10 bg-green-500 rounded-full flex items-center justify-center">
                <svg className="w-5 h-5 text-white" fill="currentColor" viewBox="0 0 24 24">
                  <path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413z"/>
                </svg>
              </div>
              <span className="font-medium">WhatsApp</span>
            </a>
          )}
          {getInstagramUrl(socialConfig.instagram) && (
            <a
              href={getInstagramUrl(socialConfig.instagram)!}
              target="_blank"
              rel="noopener noreferrer"
              className="flex items-center gap-3 p-3 bg-pink-50 rounded-lg hover:bg-pink-100 transition-colors"
            >
              <div className="w-10 h-10 bg-gradient-to-r from-purple-500 to-pink-500 rounded-full flex items-center justify-center">
                <svg className="w-5 h-5 text-white" fill="currentColor" viewBox="0 0 24 24">
                  <path d="M12 2.163c3.204 0 3.584.012 4.85.07 3.252.148 4.771 1.691 4.919 4.919.058 1.265.069 1.645.069 4.849 0 3.205-.012 3.584-.069 4.849-.149 3.225-1.664 4.771-4.919 4.919-1.266.058-1.644.07-4.85.07-3.204 0-3.584-.012-4.849-.07-3.26-.149-4.771-1.699-4.919-4.92-.058-1.265-.07-1.644-.07-4.849 0-3.204.013-3.583.07-4.849.149-3.227 1.664-4.771 4.919-4.919 1.266-.057 1.645-.069 4.849-.069zm0-2.163c-3.259 0-3.667.014-4.947.072-4.358.2-6.78 2.618-6.98 6.98-.059 1.281-.073 1.689-.073 4.948 0 3.259.014 3.668.072 4.948.2 4.358 2.618 6.78 6.98 6.98 1.281.058 1.689.072 4.948.072 3.259 0 3.668-.014 4.948-.072 4.354-.2 6.782-2.618 6.979-6.98.059-1.28.073-1.689.073-4.948 0-3.259-.014-3.667-.072-4.947-.196-4.354-2.617-6.78-6.979-6.98-1.281-.059-1.69-.073-4.949-.073zm0 5.838c-3.403 0-6.162 2.759-6.162 6.162s2.759 6.163 6.162 6.163 6.162-2.759 6.162-6.163c0-3.403-2.759-6.162-6.162-6.162zm0 10.162c-2.209 0-4-1.79-4-4 0-2.209 1.791-4 4-4s4 1.791 4 4c0 2.21-1.791 4-4 4zm6.406-11.845c-.796 0-1.441.645-1.441 1.44s.645 1.44 1.441 1.44c.795 0 1.439-.645 1.439-1.44s-.644-1.44-1.439-1.44z"/>
                </svg>
              </div>
              <span className="font-medium">Instagram</span>
            </a>
          )}
          {getTelegramUrl(socialConfig.telegram) && (
            <a
              href={getTelegramUrl(socialConfig.telegram)!}
              target="_blank"
              rel="noopener noreferrer"
              className="flex items-center gap-3 p-3 bg-blue-50 rounded-lg hover:bg-blue-100 transition-colors"
            >
              <div className="w-10 h-10 bg-blue-500 rounded-full flex items-center justify-center">
                <svg className="w-5 h-5 text-white" fill="currentColor" viewBox="0 0 24 24">
                  <path d="M11.944 0A12 12 0 0 0 0 12a12 12 0 0 0 12 12 12 12 0 0 0 12-12A12 12 0 0 0 12 0a12 12 0 0 0-.056 0zm4.962 7.224c.1-.002.321.023.465.14a.506.506 0 0 1 .171.325c.016.093.036.306.02.472-.18 1.898-.962 6.502-1.36 8.627-.168.9-.499 1.201-.82 1.23-.696.065-1.225-.46-1.9-.902-1.056-.693-1.653-1.124-2.678-1.8-1.185-.78-.417-1.21.258-1.91.177-.184 3.247-2.977 3.307-3.23.007-.032.014-.15-.056-.212s-.174-.041-.249-.024c-.106.024-1.793 1.14-5.061 3.345-.48.33-.913.49-1.302.48-.428-.008-1.252-.241-1.865-.44-.752-.245-1.349-.374-1.297-.789.027-.216.325-.437.893-.663 3.498-1.524 5.83-2.529 6.998-3.014 3.332-1.386 4.025-1.627 4.476-1.635z"/>
                </svg>
              </div>
              <span className="font-medium">Telegram</span>
            </a>
          )}
        </div>
      </Card>
    </div>
  );
}
