import { supportsPassiveEvents } from "detect-passive-events";

import { forceSingleColumn, hasMultiColumnPath } from "./initial_state";

const LAYOUT_BREAKPOINT = 630;

export const isMobile = (width: number) => width <= LAYOUT_BREAKPOINT;

export const transientSingleColumn = !forceSingleColumn && !hasMultiColumnPath;

export type LayoutType = "mobile" | "single-column" | "multi-column";
export const layoutFromWindow = (layout_local_setting: string): LayoutType => {
  switch (layout_local_setting) {
    case "multiple":
      return "multi-column";
    case "single":
      if (isMobile(window.innerWidth)) {
        return "mobile";
      } else {
        return "single-column";
      }
    default:
      if (isMobile(window.innerWidth)) {
        return "mobile";
      } else if (forceSingleColumn) {
        return "single-column";
      } else {
        return "multi-column";
      }
  }
};

const listenerOptions = supportsPassiveEvents ? { passive: true } : false;

let userTouching = false;

const touchListener = () => {
  userTouching = true;

  window.removeEventListener("touchstart", touchListener);
};

window.addEventListener("touchstart", touchListener, listenerOptions);

export const isUserTouching = () => userTouching;