// @flow

import type { Node } from 'react';
import warning from 'warning';
import { keys as breakpointKeys } from '../styles/createBreakpoints';
import withWidth, { isWidthDown, isWidthUp } from '../utils/withWidth';
import type { HiddenProps } from './types';

export type Props = HiddenProps & {
  /**
   * The content of the component.
   */
  children: Node,
  /**
   * @ignore
   * width prop provided by withWidth decorator
   */
  width: string,
};

/**
 * @ignore - internal component.
 */
function HiddenJs(props: Props) {
  const {
    children,
    only,
    xsUp,
    smUp,
    mdUp,
    lgUp,
    xlUp,
    xsDown,
    smDown,
    mdDown,
    lgDown,
    xlDown,
    width,
    ...other
  } = props;

  warning(
    Object.keys(other).length === 0,
    `Material-UI: unsupported properties received ${JSON.stringify(other)} by \`<Hidden />\`.`,
  );

  let visible = true;

  // `only` check is faster to get out sooner if used.
  if (only) {
    if (Array.isArray(only)) {
      for (let i = 0; i < only.length; i += 1) {
        const breakpoint = only[i];
        if (width === breakpoint) {
          visible = false;
          break;
        }
      }
    } else if (only && width === only) {
      visible = false;
    }
  }

  // Allow `only` to be combined with other props. If already hidden, no need to check others.
  if (visible) {
    // determine visibility based on the smallest size up
    for (let i = 0; i < breakpointKeys.length; i += 1) {
      const breakpoint = breakpointKeys[i];
      const breakpointUp = props[`${breakpoint}Up`];
      const breakpointDown = props[`${breakpoint}Down`];
      if (
        (breakpointUp && isWidthUp(breakpoint, width)) ||
        (breakpointDown && isWidthDown(breakpoint, width))
      ) {
        visible = false;
        break;
      }
    }
  }

  if (!visible) {
    return null;
  }

  return children;
}

export default withWidth()(HiddenJs);