import { createFileRoute, useParams } from "@tanstack/react-router";
import { useQueryData } from "@/hooks/useQueryData";
import { API_ENDPOINTS, BASE_URL } from "@/config/api";
import {
  flexRender,
  getCoreRowModel,
  getPaginationRowModel,
  useReactTable,
  type ColumnDef,
} from "@tanstack/react-table";
import { Card, CardHeader, CardTitle, CardContent } from "@/components/ui/card";
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table";
import { useDeviceEvents } from "@/hooks/useDeviceEvents";
import {
  ChevronLeft,
  ChevronRight,
  Clock,
  Hash,
  Loader2,
  MapPin,
  Monitor,
  Wifi,
  WifiOff,
} from "lucide-react";
import { Badge } from "@/components/ui/badge";
import { Avatar, AvatarFallback } from "@/components/ui/avatar";
import { Button } from "@/components/ui/button";

export const Route = createFileRoute("/_authenticated/room/$roomName/")({
  head: ({ params }) => ({
    meta: [{ title: `Danh sách thiết bị phòng ${params.roomName}` }],
  }),
  component: RoomDetailComponent,
});

function RoomDetailComponent() {
  const { roomName } = useParams({ from: "/_authenticated/room/$roomName/" });

  const { data: devices = [], isLoading } = useQueryData({
    queryKey: ["devices", roomName],
    url: BASE_URL + API_ENDPOINTS.DEVICE_COMM.GET_DEVICE_FROM_ROOM(roomName),
  });

  // Lắng nghe SSE và update state
  useDeviceEvents(roomName);

  const columns: ColumnDef<any>[] = [
    {
      header: "STT",
      cell: ({ row }) => (
        <div className="flex items-center gap-3">
          <Avatar className="h-8 w-8">
            <AvatarFallback className="bg-primary/10 text-primary">
              <Monitor className="h-4 w-4" />
            </AvatarFallback>
          </Avatar>
          <span className="font-medium text-sm">{row.index + 1}</span>
        </div>
      ),
    },
    {
      header: () => (
        <div className="flex items-center gap-2">
          <Hash className="h-4 w-4" />
          MAC Address
        </div>
      ),
      accessorKey: "macAddress",
      cell: ({ getValue }) => (
        <code className="bg-muted px-2 py-1 rounded text-sm font-mono">
          {getValue() as string}
        </code>
      ),
    },
    {
      header: () => (
        <div className="flex items-center gap-2">
          <Clock className="h-4 w-4" />
          Thời gian thiết bị
        </div>
      ),
      accessorKey: "deviceTime",
      cell: ({ getValue }) => {
        const date = new Date(getValue() as string);
        return (
          <div className="text-sm">
            <div className="font-medium">
              {date.toLocaleDateString("vi-VN")}
            </div>
            <div className="text-muted-foreground">
              {date.toLocaleTimeString("vi-VN")}
            </div>
          </div>
        );
      },
    },
    {
      header: "Phiên bản",
      accessorKey: "version",
      cell: ({ getValue }) => (
        <Badge variant="secondary" className="font-mono">
          v{getValue() as string}
        </Badge>
      ),
    },
    {
      header: () => (
        <div className="flex items-center gap-2">
          <MapPin className="h-4 w-4" />
          Địa chỉ IP
        </div>
      ),
      accessorKey: "ipAddress",
      cell: ({ getValue }) => (
        <code className="bg-muted px-2 py-1 rounded text-sm font-mono">
          {getValue() as string}
        </code>
      ),
    },
    {
      header: "Trạng thái",
      accessorKey: "isOffline",
      cell: ({ getValue }) => {
        const isOffline = getValue() as boolean;
        return (
          <Badge
            variant={isOffline ? "destructive" : "default"}
            className={`flex items-center gap-1 w-fit ${
              isOffline
                ? "bg-red-100 text-red-700 hover:bg-red-100"
                : "bg-green-100 text-green-700 hover:bg-green-100"
            }`}
          >
            {isOffline ? (
              <WifiOff className="h-3 w-3" />
            ) : (
              <Wifi className="h-3 w-3" />
            )}
            {isOffline ? "Offline" : "Online"}
          </Badge>
        );
      },
    },
  ];

  const table = useReactTable({
    data: devices,
    columns,
    getCoreRowModel: getCoreRowModel(),
    getPaginationRowModel: getPaginationRowModel(),
    initialState: { pagination: { pageSize: 16 } },
  });

  if (isLoading) {
    return (
      <div className="w-full px-6 py-8">
        <div className="flex items-center justify-center min-h-[400px]">
          <div className="flex flex-col items-center gap-4">
            <Loader2 className="h-8 w-8 animate-spin text-primary" />
            <p className="text-muted-foreground">Đang tải danh sách phòng...</p>
          </div>
        </div>
      </div>
    );
  }

  const onlineDevices = devices.filter(
    (device: any) => !device.isOffline
  ).length;
  const offlineDevices = devices.length - onlineDevices;

  return (
    <div className="w-full px-6 space-y-6">
      <div className="flex items-center justify-between">
        <div className="space-y-1">
          <h1 className="text-3xl font-bold tracking-tight">
            Phòng: {roomName}
          </h1>
          <p className="text-muted-foreground">
            Quản lý và theo dõi thiết bị trong phòng
          </p>
        </div>
        <div className="flex gap-4">
          <div className="text-center">
            <div className="text-2xl font-bold text-green-600">
              {onlineDevices}
            </div>
            <div className="text-sm text-muted-foreground">Online</div>
          </div>
          <div className="text-center">
            <div className="text-2xl font-bold text-red-600">
              {offlineDevices}
            </div>
            <div className="text-sm text-muted-foreground">Offline</div>
          </div>
          <div className="text-center">
            <div className="text-2xl font-bold">{devices.length}</div>
            <div className="text-sm text-muted-foreground">Tổng cộng</div>
          </div>
        </div>
      </div>

      <Card className="shadow-sm">
        <CardHeader className="bg-muted/50">
          <CardTitle className="flex items-center gap-2">
            <Monitor className="h-5 w-5" />
            Danh sách thiết bị
          </CardTitle>
        </CardHeader>
        <CardContent className="p-0">
          {devices.length === 0 ? (
            <div className="flex flex-col items-center justify-center py-12">
              <Monitor className="h-12 w-12 text-muted-foreground mb-4" />
              <h3 className="text-lg font-semibold mb-2">Không có thiết bị</h3>
              <p className="text-muted-foreground text-center max-w-sm">
                Phòng này chưa có thiết bị nào được kết nối.
              </p>
            </div>
          ) : (
            <>
              <div className="max-h-[600px] overflow-y-auto">
                <Table>
                  <TableHeader className="sticky top-0 bg-background z-10">
                    {table.getHeaderGroups().map((headerGroup) => (
                      <TableRow
                        key={headerGroup.id}
                        className="hover:bg-transparent border-b"
                      >
                        {headerGroup.headers.map((header) => (
                          <TableHead
                            key={header.id}
                            className="font-semibold text-foreground bg-muted/30"
                          >
                            {flexRender(
                              header.column.columnDef.header,
                              header.getContext()
                            )}
                          </TableHead>
                        ))}
                      </TableRow>
                    ))}
                  </TableHeader>
                  <TableBody>
                    {table.getRowModel().rows.map((row) => (
                      <TableRow
                        key={row.id}
                        className="hover:bg-muted/50 transition-colors"
                      >
                        {row.getVisibleCells().map((cell) => (
                          <TableCell key={cell.id} className="py-4">
                            {flexRender(
                              cell.column.columnDef.cell,
                              cell.getContext()
                            )}
                          </TableCell>
                        ))}
                      </TableRow>
                    ))}
                  </TableBody>
                </Table>
              </div>

              <div className="flex items-center justify-between p-4 border-t bg-muted/20">
                <div className="flex items-center gap-2 text-sm text-muted-foreground">
                  <span>
                    Hiển thị{" "}
                    {table.getState().pagination.pageIndex *
                      table.getState().pagination.pageSize +
                      1}{" "}
                    -{" "}
                    {Math.min(
                      (table.getState().pagination.pageIndex + 1) *
                        table.getState().pagination.pageSize,
                      devices.length
                    )}{" "}
                    trong tổng số {devices.length} thiết bị
                  </span>
                </div>

                <div className="flex items-center gap-2">
                  <Button
                    variant="outline"
                    size="sm"
                    onClick={() => table.previousPage()}
                    disabled={!table.getCanPreviousPage()}
                    className="flex items-center gap-1"
                  >
                    <ChevronLeft className="h-4 w-4" />
                    Trước
                  </Button>

                  <div className="flex items-center gap-1 text-sm font-medium">
                    <span>Trang</span>
                    <span className="bg-primary text-primary-foreground px-2 py-1 rounded">
                      {table.getState().pagination.pageIndex + 1}
                    </span>
                    <span>của {table.getPageCount()}</span>
                  </div>

                  <Button
                    variant="outline"
                    size="sm"
                    onClick={() => table.nextPage()}
                    disabled={!table.getCanNextPage()}
                    className="flex items-center gap-1"
                  >
                    Sau
                    <ChevronRight className="h-4 w-4" />
                  </Button>
                </div>
              </div>
            </>
          )}
        </CardContent>
      </Card>
    </div>
  );
}