import Link from 'next/link';

import {
  ArrowRight,
  FileText,
  GraduationCap,
  Mail,
  Plus,
  UserCheck,
  UserPlus,
  CalendarDays,
  Activity,
  BedDouble,
} from 'lucide-react';
import { getTranslations } from 'next-intl/server';

import { createBookingManagementApi } from '@kit/booking-management/api';
import { createCourseManagementApi } from '@kit/course-management/api';
import { createEventManagementApi } from '@kit/event-management/api';
import { createFinanceApi } from '@kit/finance/api';
import { createMemberServices } from '@kit/member-management/services';
import { createNewsletterApi } from '@kit/newsletter/api';
import { formatDate } from '@kit/shared/dates';
import { getSupabaseServerClient } from '@kit/supabase/server-client';
import { Badge } from '@kit/ui/badge';
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from '@kit/ui/card';

import { AccountNotFound } from '~/components/account-not-found';
import { CmsPageShell } from '~/components/cms-page-shell';
import { EmptyState } from '~/components/empty-state';
import { StatsCard } from '~/components/stats-card';

interface TeamAccountHomePageProps {
  params: Promise<{ account: string }>;
}

export default async function TeamAccountHomePage({
  params,
}: TeamAccountHomePageProps) {
  const { account } = await params;
  const client = getSupabaseServerClient();
  const t = await getTranslations('common');

  const { data: acct } = await client
    .from('accounts')
    .select('id, name')
    .eq('slug', account)
    .single();

  if (!acct) return <AccountNotFound />;

  // Load all stats in parallel with allSettled for resilience
  const [
    memberStatsResult,
    courseStatsResult,
    invoicesResult,
    newslettersResult,
    bookingsResult,
    eventsResult,
  ] = await Promise.allSettled([
    createMemberServices(client).query.getStatistics(acct.id),
    createCourseManagementApi(client).statistics.getQuickStats(acct.id),
    createFinanceApi(client).listInvoices(acct.id, { status: 'draft' }),
    createNewsletterApi(client).listNewsletters(acct.id),
    createBookingManagementApi(client).bookings.list(acct.id, { page: 1 }),
    createEventManagementApi(client).events.list(acct.id, { page: 1 }),
  ]);

  const memberStatsRaw =
    memberStatsResult.status === 'fulfilled' ? memberStatsResult.value : {};
  const memberStats = {
    total: Object.values(memberStatsRaw).reduce((a, b) => a + b, 0),
    active: memberStatsRaw.active ?? 0,
    inactive: memberStatsRaw.inactive ?? 0,
    pending: memberStatsRaw.pending ?? 0,
    resigned: memberStatsRaw.resigned ?? 0,
  };

  const courseStats =
    courseStatsResult.status === 'fulfilled'
      ? courseStatsResult.value
      : {
          totalCourses: 0,
          openCourses: 0,
          completedCourses: 0,
          totalParticipants: 0,
        };

  const openInvoices =
    invoicesResult.status === 'fulfilled' ? invoicesResult.value.data : [];

  const newsletters =
    newslettersResult.status === 'fulfilled'
      ? newslettersResult.value.data
      : [];

  const bookings =
    bookingsResult.status === 'fulfilled'
      ? bookingsResult.value
      : { data: [], total: 0 };

  const events =
    eventsResult.status === 'fulfilled'
      ? eventsResult.value
      : { data: [], total: 0 };

  const accountName = acct.name ? String(acct.name) : 'Dashboard';

  return (
    <CmsPageShell account={account} title={accountName}>
      <div className="flex w-full flex-col gap-6">
        {/* Stats Row */}
        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-4">
          <StatsCard
            title={t('dashboard.members')}
            value={memberStats.active}
            icon={<UserCheck className="h-5 w-5" aria-hidden="true" />}
            description={t('dashboard.membersDescription', {
              total: memberStats.total,
              pending: memberStats.pending,
            })}
          />
          <StatsCard
            title={t('dashboard.courses')}
            value={courseStats.openCourses}
            icon={<GraduationCap className="h-5 w-5" aria-hidden="true" />}
            description={t('dashboard.coursesDescription', {
              total: courseStats.totalCourses,
              participants: courseStats.totalParticipants,
            })}
          />
          <StatsCard
            title={t('dashboard.openInvoices')}
            value={openInvoices.length}
            icon={<FileText className="h-5 w-5" aria-hidden="true" />}
            description={t('dashboard.openInvoicesDescription')}
          />
          <StatsCard
            title={t('dashboard.newsletters')}
            value={newsletters.length}
            icon={<Mail className="h-5 w-5" aria-hidden="true" />}
            description={t('dashboard.newslettersDescription')}
          />
        </div>

        <div className="grid grid-cols-1 gap-6 lg:grid-cols-3">
          {/* Recent Activity */}
          <Card className="lg:col-span-2">
            <CardHeader>
              <CardTitle className="flex items-center gap-2">
                <Activity className="h-5 w-5" aria-hidden="true" />
                {t('dashboard.recentActivity')}
              </CardTitle>
              <CardDescription>
                {t('dashboard.recentActivityDescription')}
              </CardDescription>
            </CardHeader>
            <CardContent>
              <div className="space-y-4">
                {/* Recent bookings */}
                {bookings.data
                  .slice(0, 3)
                  .map((booking: Record<string, unknown>) => (
                    <div
                      key={String(booking.id)}
                      className="flex items-center justify-between rounded-md border p-3"
                    >
                      <div className="flex items-center gap-3">
                        <div className="rounded-full bg-blue-500/10 p-2 text-blue-600">
                          <BedDouble className="h-4 w-4" aria-hidden="true" />
                        </div>
                        <div>
                          <Link
                            href={`/home/${account}/bookings/${String(booking.id)}`}
                            className="text-sm font-medium hover:underline"
                          >
                            {t('dashboard.bookingFrom')}{' '}
                            {booking.check_in
                              ? formatDate(booking.check_in as string)
                              : '—'}
                          </Link>
                          <p className="text-muted-foreground text-xs">
                            {formatDate(booking.check_in as string)} –{' '}
                            {formatDate(booking.check_out as string)}
                          </p>
                        </div>
                      </div>
                      <Badge variant="outline">
                        {String(booking.status ?? '—')}
                      </Badge>
                    </div>
                  ))}

                {/* Recent events */}
                {events.data
                  .slice(0, 3)
                  .map((event: Record<string, unknown>) => (
                    <div
                      key={String(event.id)}
                      className="flex items-center justify-between rounded-md border p-3"
                    >
                      <div className="flex items-center gap-3">
                        <div className="rounded-full bg-amber-500/10 p-2 text-amber-600">
                          <CalendarDays
                            className="h-4 w-4"
                            aria-hidden="true"
                          />
                        </div>
                        <div>
                          <Link
                            href={`/home/${account}/events/${String(event.id)}`}
                            className="text-sm font-medium hover:underline"
                          >
                            {String(event.name)}
                          </Link>
                          <p className="text-muted-foreground text-xs">
                            {formatDate(event.event_date as string)}
                          </p>
                        </div>
                      </div>
                      <Badge variant="outline">
                        {String(event.status ?? '—')}
                      </Badge>
                    </div>
                  ))}

                {bookings.data.length === 0 && events.data.length === 0 && (
                  <EmptyState
                    icon={<Activity className="h-8 w-8" aria-hidden="true" />}
                    title={t('dashboard.recentActivityEmpty')}
                    description={t('dashboard.recentActivityEmptyDescription')}
                  />
                )}
              </div>
            </CardContent>
          </Card>

          {/* Quick Actions */}
          <Card>
            <CardHeader>
              <CardTitle>{t('dashboard.quickActions')}</CardTitle>
              <CardDescription>
                {t('dashboard.quickActionsDescription')}
              </CardDescription>
            </CardHeader>
            <CardContent className="flex flex-col gap-2">
              <Link
                href={`/home/${account}/members-cms/new`}
                className="border-border bg-background hover:bg-muted hover:text-foreground inline-flex w-full items-center justify-between gap-2 rounded-lg border px-4 py-2 text-sm font-medium transition-all"
              >
                <span className="flex items-center gap-2">
                  <UserPlus className="h-4 w-4" aria-hidden="true" />
                  {t('dashboard.newMember')}
                </span>
                <ArrowRight className="h-4 w-4" aria-hidden="true" />
              </Link>

              <Link
                href={`/home/${account}/courses/new`}
                className="border-border bg-background hover:bg-muted hover:text-foreground inline-flex w-full items-center justify-between gap-2 rounded-lg border px-4 py-2 text-sm font-medium transition-all"
              >
                <span className="flex items-center gap-2">
                  <GraduationCap className="h-4 w-4" aria-hidden="true" />
                  {t('dashboard.newCourse')}
                </span>
                <ArrowRight className="h-4 w-4" aria-hidden="true" />
              </Link>

              <Link
                href={`/home/${account}/newsletter/new`}
                className="border-border bg-background hover:bg-muted hover:text-foreground inline-flex w-full items-center justify-between gap-2 rounded-lg border px-4 py-2 text-sm font-medium transition-all"
              >
                <span className="flex items-center gap-2">
                  <Mail className="h-4 w-4" />
                  {t('dashboard.createNewsletter')}
                </span>
                <ArrowRight className="h-4 w-4" aria-hidden="true" />
              </Link>

              <Link
                href={`/home/${account}/bookings/new`}
                className="border-border bg-background hover:bg-muted hover:text-foreground inline-flex w-full items-center justify-between gap-2 rounded-lg border px-4 py-2 text-sm font-medium transition-all"
              >
                <span className="flex items-center gap-2">
                  <BedDouble className="h-4 w-4" aria-hidden="true" />
                  {t('dashboard.newBooking')}
                </span>
                <ArrowRight className="h-4 w-4" aria-hidden="true" />
              </Link>

              <Link
                href={`/home/${account}/events/new`}
                className="border-border bg-background hover:bg-muted hover:text-foreground inline-flex w-full items-center justify-between gap-2 rounded-lg border px-4 py-2 text-sm font-medium transition-all"
              >
                <span className="flex items-center gap-2">
                  <Plus className="h-4 w-4" aria-hidden="true" />
                  {t('dashboard.newEvent')}
                </span>
                <ArrowRight className="h-4 w-4" aria-hidden="true" />
              </Link>
            </CardContent>
          </Card>
        </div>
      </div>
    </CmsPageShell>
  );
}