import React, { memo, forwardRef } from 'react';
import { flexRender } from '@tanstack/react-table';
import type { TableColumn } from './DataTable.types';
import type { Row } from '@tanstack/react-table';
import { TableCell, TableRow, TableRowHeader } from '../Table';
import { Checkbox } from '../Checkbox';
import { Skeleton } from '../Skeleton';
import { cn } from '~/utils';

export const SelectionCheckbox = memo(
  ({
    checked,
    onChange,
    ariaLabel,
  }: {
    checked: boolean;
    onChange: (value: boolean) => void;
    ariaLabel: string;
  }) => (
    <div
      role="button"
      tabIndex={0}
      onKeyDown={(e) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          onChange(!checked);
        }
        e.stopPropagation();
      }}
      className="flex h-full w-8 items-center justify-center"
      onClick={(e) => {
        e.stopPropagation();
        onChange(!checked);
      }}
    >
      <Checkbox checked={checked} onCheckedChange={onChange} aria-label={ariaLabel} />
    </div>
  ),
);

SelectionCheckbox.displayName = 'SelectionCheckbox';

interface TableRowComponentProps<TData extends Record<string, unknown>> {
  row: Row<TData>;
  virtualIndex?: number;
  style?: React.CSSProperties;
  selected: boolean;
}

// ...existing code...
const TableRowComponent = <TData extends Record<string, unknown>>(
  { row, virtualIndex, style, selected }: TableRowComponentProps<TData>,
  ref: React.Ref<HTMLTableRowElement>,
) => {
  // Check if we're on mobile - use window.innerWidth for component-level check
  const isSmallScreen = typeof window !== 'undefined' && window.innerWidth < 768;

  return (
    <TableRow
      ref={ref}
      data-state={selected ? 'selected' : undefined}
      data-index={virtualIndex}
      className="border-none hover:bg-surface-secondary"
      style={style}
    >
      {row.getVisibleCells().map((cell) => {
        const meta = cell.column.columnDef.meta as
          | { className?: string; desktopOnly?: boolean; width?: number; isRowHeader?: boolean }
          | undefined;
        const isDesktopOnly = meta?.desktopOnly;
        const isRowHeader = meta?.isRowHeader;
        const percent = meta?.width;
        const widthStyle =
          cell.column.id === 'select'
            ? { width: '32px', maxWidth: '32px', minWidth: '32px' }
            : percent
              ? {
                  width: `${percent}%`,
                  maxWidth: `${percent}%`,
                  minWidth: `${percent}%`, // Don't shrink on mobile
                }
              : undefined;

        const CellComponent = isRowHeader ? TableRowHeader : TableCell;

        // For desktop-only columns on mobile, keep them in DOM but visually hidden
        // This ensures screen readers can still access the content
        const cellProps =
          isDesktopOnly && isSmallScreen
            ? { 'aria-hidden': false as const } // Keep accessible to screen readers
            : {};

        return (
          <CellComponent
            key={cell.id}
            className={cn(
              'max-w-0 truncate px-2 py-2 md:px-3 md:py-3',
              cell.column.id === 'select' && 'w-8 p-1',
              meta?.className,
              isDesktopOnly && 'hidden md:table-cell',
            )}
            style={widthStyle}
            {...cellProps}
          >
            {flexRender(cell.column.columnDef.cell, cell.getContext())}
          </CellComponent>
        );
      })}
    </TableRow>
  );
};
// ...existing code...

type ForwardTableRowComponentType = <TData extends Record<string, unknown>>(
  props: TableRowComponentProps<TData> & React.RefAttributes<HTMLTableRowElement>,
) => JSX.Element;

const ForwardTableRowComponent = forwardRef(TableRowComponent) as ForwardTableRowComponentType;

interface GenericRowProps {
  row: Row<Record<string, unknown>>;
  virtualIndex?: number;
  style?: React.CSSProperties;
  selected: boolean;
}

export const MemoizedTableRow = memo(
  ForwardTableRowComponent as (props: GenericRowProps) => JSX.Element,
  (prev: GenericRowProps, next: GenericRowProps) =>
    prev.row.original === next.row.original && prev.selected === next.selected,
);

export const SkeletonRows = memo(
  <TData extends Record<string, unknown>, TValue>({
    count = 10,
    columns,
  }: {
    count?: number;
    columns: TableColumn<TData, TValue>[];
  }) => (
    <>
      {Array.from({ length: count }, (_, index) => (
        <TableRow key={`skeleton-${index}`} className="h-[56px] border-b border-border-light">
          {columns.map((column) => {
            const columnKey = String(
              column.id ?? ('accessorKey' in column && column.accessorKey) ?? '',
            );
            const meta = column.meta as { className?: string; desktopOnly?: boolean } | undefined;
            return (
              <TableCell
                key={columnKey}
                className={cn(
                  'px-2 py-2 md:px-3',
                  meta?.className,
                  meta?.desktopOnly && 'hidden md:table-cell',
                )}
              >
                <Skeleton className="h-6 w-full" />
              </TableCell>
            );
          })}
        </TableRow>
      ))}
    </>
  ),
);

SkeletonRows.displayName = 'SkeletonRows';