// @flow strict

import * as React from 'react';
import get from 'lodash/get';
import xor from 'lodash/xor';

import {useWindowSize} from '../../hooks/useWindowSize';
import {sizeFluid} from '../../styles/variables/_size';
import {classify} from '../../utils/classify';
import type {ClassNameComponent} from '../../utils/makeClassNameComponent';
import {makeClassNameComponent} from '../../utils/makeClassNameComponent';

import {DefaultRow, EmptyRow} from './DefaultRow';
import {DefaultTableHeader} from './DefaultTableHeader';
import type {SortDirection} from './hooks';
import type {GenericObject, TableProps} from './Table';

import css from './Table.module.css';


export const BasicTable: ClassNameComponent<'table'> = makeClassNameComponent(
  css.defaultTable,
  'table',
);

export const BasicTableBody: ClassNameComponent<'tbody'> =
  makeClassNameComponent(css.defaultTableBody, 'tbody');

/**
 * A Static Default Table.
 *
 * Our
 */

export function StaticTable<Data: GenericObject, Extras: GenericObject>(props: {
  ...TableProps<Data, Extras>,
  handleSortClick?: (sortKey: string) => mixed,
  sortKey?: string,
  sortDirection?: SortDirection,
  rowKeys?: string[],
}): React.Node {
  const {
    classNames,
    className,
    TableRow,
    entries,
    extras,
    rowKeys,
    headers,
    showHeader = true,
    tableHeaderClassName,
    sortable,
    // eslint-disable-next-line unused-imports/no-unused-vars
    defaultSortKey,
    // eslint-disable-next-line unused-imports/no-unused-vars
    defaultSortDirection = 'original',
    // eslint-disable-next-line unused-imports/no-unused-vars
    onSort,
    handleSortClick,
    sortKey,
    sortDirection,
    selectedKeys,
    disabledKeys = [],
    onSelect,
    isLoading,
    idName = 'id',
    emptyText,
    disabled,
    customLoader,
    borderRadius,
    stickyHeader,
  } = props;

  // this is a fallback and honestly probably doesn't need the
  // memo'ing
  const mappedKeys = React.useMemo(
    () => rowKeys ?? entries.map((e) => get(e, idName)),
    [entries, idName, rowKeys],
  );

  const tableRef = React.useRef(null);
  const {width} = useWindowSize();
  const [tableWidth, setTableWidth] = React.useState();

  React.useEffect(() => {
    if (tableRef.current) {
      setTableWidth(tableRef.current.offsetWidth);
    }
  }, [width]);

  /**
   * this function is also used to decide weather to show checkbox in header or not. so it's value is undefined in case selectedKeys is not there.
   */

  const handleHeaderCheckboxClick = selectedKeys
    ? ({checked}: {value: string, checked: boolean}) => {
      let selectedRowIds = [];
      if (selectedKeys) {
        if (checked === true) {
          selectedRowIds = entries.map((singleRowObj) =>
            get(singleRowObj, idName),
          );
        }
        onSelect?.(selectedRowIds);
      }
    }
    : undefined;
  return (
    <div
      className={classify(css.tableContainer, classNames?.wrapper)}
      data-id="table-wrap"
      ref={tableRef}
      style={{
        '--border-radius': borderRadius,
        '--table-width': tableWidth ? `${tableWidth}px` : sizeFluid,
      }}
    >
      <BasicTable
        data-id="basic-table"
        className={classify(
          className,
          {
            [css.fullHeightTable]:
              isLoading || (!entries.length && !!emptyText),
          },
          classNames?.table,
        )}
      >
        {showHeader && (
          <DefaultTableHeader
            className={classify(tableHeaderClassName, classNames?.tableHeader)}
            sortable={sortable}
            columns={headers}
            handleSortClick={handleSortClick}
            sortKey={sortKey}
            sortDirection={sortDirection}
            disabled={disabled}
            handleCheckboxClick={handleHeaderCheckboxClick}
            stickyHeader={stickyHeader}
            checked={
              selectedKeys == null || selectedKeys.length === 0
                ? 'false'
                : selectedKeys.length < entries.length
                  ? 'mixed'
                  : 'true'
            }
          />
        )}

        <BasicTableBody className={classNames?.tableBody}>
          {isLoading || !entries.length ? (
            <EmptyRow
              isLoading={isLoading}
              emptyText={emptyText}
              headersLength={
                handleHeaderCheckboxClick ? headers.length + 1 : headers.length
              }
              customLoader={customLoader}
            />
          ) : (
            mappedKeys.map((key) => {
              const data = entries.find((e) => get(e, idName) === key);
              if (data == null) {
                return null;
              }
              (data: Data);
              const selected =
                selectedKeys && Array.isArray(selectedKeys)
                  ? selectedKeys.includes(get(data, idName))
                  : undefined;
              const isRowDisabled =
                disabledKeys && Array.isArray(disabledKeys)
                  ? disabledKeys.includes(get(data, idName))
                  : false;

              return TableRow ? (
                <TableRow
                  key={key}
                  data={data}
                  headers={headers}
                  // extras and rowKeys are both 'optional'
                  extras={extras}
                  sortedKeys={rowKeys ?? mappedKeys}
                  selected={selected}
                  disabled={disabled || isRowDisabled}
                />
              ) : (
                <DefaultRow
                  key={key}
                  data={data}
                  extras={extras}
                  headers={headers}
                  selected={selected}
                  onSelect={
                    selectedKeys != null
                      ? (_v) => onSelect?.(xor(selectedKeys ?? [], [key]))
                      : undefined
                  }
                  disabled={disabled || isRowDisabled}
                  classNames={{
                    tableRow: classNames?.tableRow,
                    checkbox: classNames?.checkbox,
                  }}
                />
              );
            })
          )}
        </BasicTableBody>
      </BasicTable>
    </div>
  );
}