'use client';

import { useState } from 'react';
import {
  ColumnDef,
  flexRender,
  getCoreRowModel,
  getPaginationRowModel,
  useReactTable,
} from '@tanstack/react-table';

import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@workspace/ui/components/table';
import { Student } from './columns';
import { StudentDetailsModal } from './student-details-modal.tsx';
import { columns } from './columns';

interface DataTableProps {
  data: Student[];
}

export function DataTable({ data }: DataTableProps) {
  const [selectedStudent, setSelectedStudent] = useState<Student | null>(null);
  const [isModalOpen, setIsModalOpen] = useState(false);

  const table = useReactTable({
    data,
    columns,
    getCoreRowModel: getCoreRowModel(),
    getPaginationRowModel: getPaginationRowModel(),
  });

  const handleRowClick = (student: Student) => {
    setSelectedStudent(student);
    setIsModalOpen(true);
  };

  const handleCloseModal = () => {
    setIsModalOpen(false);
    setSelectedStudent(null);
  };

  return (
    <>
      <div className="rounded-md border bg-white">
        <Table>
          <TableHeader>
            {table.getHeaderGroups().map((headerGroup) => (
              <TableRow key={headerGroup.id} className="bg-gray-50">
                {headerGroup.headers.map((header) => {
                  return (
                    <TableHead key={header.id} className="font-semibold text-gray-700">
                      {header.isPlaceholder
                        ? null
                        : flexRender(header.column.columnDef.header, header.getContext())}
                    </TableHead>
                  );
                })}
              </TableRow>
            ))}
          </TableHeader>
          <TableBody>
            {table.getRowModel().rows?.length ? (
              table.getRowModel().rows.map((row) => (
                <TableRow 
                  key={row.id} 
                  data-state={row.getIsSelected() && 'selected'}
                  className="cursor-pointer hover:bg-gray-50 transition-colors duration-150"
                  onClick={() => handleRowClick(row.original as Student)}
                >
                  {row.getVisibleCells().map((cell) => (
                    <TableCell key={cell.id} className="py-4">
                      {flexRender(cell.column.columnDef.cell, cell.getContext())}
                    </TableCell>
                  ))}
                </TableRow>
              ))
            ) : (
              <TableRow>
                <TableCell colSpan={columns.length} className="h-24 text-center text-gray-500">
                  No students found.
                </TableCell>
              </TableRow>
            )}
          </TableBody>
        </Table>
      </div>

      {/* Pagination */}
      <div className="flex items-center justify-between space-x-2 py-4">
        <div className="flex-1 text-sm text-gray-700">
          Showing {table.getFilteredRowModel().rows.length} of{' '}
          {table.getFilteredRowModel().rows.length} results
        </div>
        <div className="space-x-2">
          <button
            className="px-3 py-1 text-sm border border-gray-300 rounded-md hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
            onClick={() => table.previousPage()}
            disabled={!table.getCanPreviousPage()}
          >
            Previous
          </button>
          <button
            className="px-3 py-1 text-sm border border-gray-300 rounded-md hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
            onClick={() => table.nextPage()}
            disabled={!table.getCanNextPage()}
          >
            Next
          </button>
        </div>
      </div>

      {/* Student Details Modal */}
      {selectedStudent && (
        <StudentDetailsModal
          student={selectedStudent}
          isOpen={isModalOpen}
          onClose={handleCloseModal}
        />
      )}
    </>
  );
}