'use client';

import { useState } from 'react';
import Link from 'next/link';
import { useParams, useRouter } from 'next/navigation';
import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
import { Pencil, Archive, ArrowRightLeft } from 'lucide-react';
import { toast } from 'sonner';

import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { ArchiveConfirmDialog } from '@/components/shared/archive-confirm-dialog';
import { DetailHeaderStrip } from '@/components/shared/detail-header-strip';
import { PermissionGate } from '@/components/shared/permission-gate';
import { YachtForm } from '@/components/yachts/yacht-form';
import { YachtTransferDialog } from '@/components/yachts/yacht-transfer-dialog';
import { apiFetch } from '@/lib/api/client';

interface YachtDetailHeaderYacht {
  id: string;
  name: string;
  hullNumber: string | null;
  registration: string | null;
  flag: string | null;
  yearBuilt: number | null;
  builder: string | null;
  model: string | null;
  hullMaterial: string | null;
  lengthFt: string | null;
  widthFt: string | null;
  draftFt: string | null;
  lengthM: string | null;
  widthM: string | null;
  draftM: string | null;
  currentOwnerType: 'client' | 'company';
  currentOwnerId: string;
  status: string;
  notes: string | null;
  archivedAt: string | null;
}

interface YachtDetailHeaderProps {
  yacht: YachtDetailHeaderYacht;
}

const STATUS_COLORS: Record<string, string> = {
  active: 'bg-green-100 text-green-800 border-green-300',
  retired: 'bg-gray-100 text-gray-800 border-gray-300',
  sold_away: 'bg-amber-100 text-amber-800 border-amber-300',
};

const STATUS_LABELS: Record<string, string> = {
  active: 'Active',
  retired: 'Retired',
  sold_away: 'Sold Away',
};

export function OwnerLink({
  portSlug,
  type,
  id,
  preloadedName,
}: {
  portSlug: string;
  type: 'client' | 'company';
  id: string;
  /** Optional name supplied by the parent list/detail endpoint to skip the
   *  per-row fetch (avoids an N+1 round-trip on lists). */
  preloadedName?: string | null;
}) {
  // Only fetch when the parent didn't already supply a name — list endpoints
  // batch-resolve owners server-side via a join.
  const { data } = useQuery<{ fullName?: string; name?: string }>({
    queryKey: [type === 'client' ? 'clients' : 'companies', id, 'name-only'],
    queryFn: () =>
      apiFetch<{ data: { fullName?: string; name?: string } }>(
        type === 'client' ? `/api/v1/clients/${id}` : `/api/v1/companies/${id}`,
      ).then((r) => r.data),
    enabled: preloadedName === undefined || preloadedName === null,
  });

  const label = preloadedName ?? (type === 'client' ? data?.fullName : data?.name);
  const href = type === 'client' ? `/${portSlug}/clients/${id}` : `/${portSlug}/companies/${id}`;

  return (
    <Link
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      href={href as any}
      className="text-primary hover:underline"
    >
      {label ?? `${type === 'client' ? 'Client' : 'Company'} ${id.slice(0, 8)}`}
    </Link>
  );
}

function formatDimensions(yacht: YachtDetailHeaderYacht): string | null {
  const parts: string[] = [];
  if (yacht.lengthFt) parts.push(`${yacht.lengthFt} ft`);
  if (yacht.widthFt) parts.push(`${yacht.widthFt} ft`);

  let summary: string | null = null;
  if (parts.length > 0) {
    summary = parts.join(' × ');
  }
  if (yacht.draftFt) {
    summary = summary ? `${summary} (draft ${yacht.draftFt} ft)` : `draft ${yacht.draftFt} ft`;
  }
  return summary;
}

export function YachtDetailHeader({ yacht }: YachtDetailHeaderProps) {
  const queryClient = useQueryClient();
  const router = useRouter();
  const params = useParams<{ portSlug: string }>();
  const portSlug = params?.portSlug ?? '';

  const [editOpen, setEditOpen] = useState(false);
  const [archiveOpen, setArchiveOpen] = useState(false);
  const [transferOpen, setTransferOpen] = useState(false);

  const isArchived = !!yacht.archivedAt;

  const archiveMutation = useMutation({
    mutationFn: () => apiFetch(`/api/v1/yachts/${yacht.id}`, { method: 'DELETE' }),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['yachts', yacht.id] });
      queryClient.invalidateQueries({ queryKey: ['yachts'] });
      toast.success('Yacht archived');
      setArchiveOpen(false);
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      router.push(`/${portSlug}/yachts` as any);
    },
    onError: (err: Error) => {
      toast.error(err.message || 'Failed to archive yacht');
    },
  });

  const dimensions = formatDimensions(yacht);
  const statusLabel = STATUS_LABELS[yacht.status] ?? yacht.status;
  const statusColor = STATUS_COLORS[yacht.status] ?? 'bg-muted text-muted-foreground border-muted';

  return (
    <>
      <DetailHeaderStrip>
        <div className="flex items-start gap-3 flex-wrap">
          <div className="flex-1 min-w-0">
            <div className="flex items-center gap-2 flex-wrap">
              <h1 className="text-2xl font-bold text-foreground truncate">{yacht.name}</h1>
              <span
                className={`inline-flex items-center rounded-full border px-3 py-1 text-xs font-medium ${statusColor}`}
              >
                {statusLabel}
              </span>
              {isArchived && (
                <Badge variant="secondary" className="text-xs">
                  Archived
                </Badge>
              )}
            </div>

            {dimensions && <p className="text-muted-foreground mt-0.5 text-sm">{dimensions}</p>}

            <div className="flex items-center gap-2 mt-2 text-sm text-muted-foreground">
              <span>Owner:</span>
              <OwnerLink
                portSlug={portSlug}
                type={yacht.currentOwnerType}
                id={yacht.currentOwnerId}
              />
            </div>
          </div>

          {/* Actions */}
          <div className="flex flex-wrap items-center gap-2">
            <Button variant="outline" size="sm" onClick={() => setEditOpen(true)}>
              <Pencil className="mr-1.5 h-3.5 w-3.5" />
              Edit
            </Button>
            <PermissionGate resource="yachts" action="transfer">
              <Button
                variant="outline"
                size="sm"
                onClick={() => setTransferOpen(true)}
                disabled={isArchived}
              >
                <ArrowRightLeft className="mr-1.5 h-3.5 w-3.5" />
                Transfer
              </Button>
            </PermissionGate>
            <Button
              variant="outline"
              size="sm"
              onClick={() => setArchiveOpen(true)}
              disabled={isArchived}
            >
              <Archive className="mr-1.5 h-3.5 w-3.5" />
              Archive
            </Button>
          </div>
        </div>
      </DetailHeaderStrip>

      <YachtForm
        open={editOpen}
        onOpenChange={setEditOpen}
        yacht={{
          id: yacht.id,
          name: yacht.name,
          hullNumber: yacht.hullNumber,
          registration: yacht.registration,
          flag: yacht.flag,
          yearBuilt: yacht.yearBuilt,
          builder: yacht.builder,
          model: yacht.model,
          hullMaterial: yacht.hullMaterial,
          lengthFt: yacht.lengthFt,
          widthFt: yacht.widthFt,
          draftFt: yacht.draftFt,
          lengthM: yacht.lengthM,
          widthM: yacht.widthM,
          draftM: yacht.draftM,
          currentOwnerType: yacht.currentOwnerType,
          currentOwnerId: yacht.currentOwnerId,
          status: yacht.status,
          notes: yacht.notes,
        }}
      />

      <ArchiveConfirmDialog
        open={archiveOpen}
        onOpenChange={setArchiveOpen}
        entityName={yacht.name}
        entityType="Yacht"
        isArchived={isArchived}
        onConfirm={() => {
          archiveMutation.mutate();
        }}
        isLoading={archiveMutation.isPending}
      />

      <YachtTransferDialog
        open={transferOpen}
        onOpenChange={setTransferOpen}
        yachtId={yacht.id}
        currentOwner={{ type: yacht.currentOwnerType, id: yacht.currentOwnerId }}
      />
    </>
  );
}
