/*!
 * Jodit Editor (https://xdsoft.net/jodit/)
 * License GNU General Public License version 2 or later;
 * Copyright 2013-2019 Valeriy Chupurnov https://xdsoft.net
 */

import { IS_IE } from '../../constants';

let $$temp: number = 1;

/**
 * Find all elements by selector and return Array. If it did not find any element it return empty array
 *
 * @example
 * ```javascript
 * Jodit.modules.Helpres.$$('.someselector').forEach(function (elm) {
 *      elm.addEventListener('click', function () {
 *          alert(''Clicked');
 *      });
 * })
 * ```
 * @param selector CSS like selector
 * @param root
 *
 * @return {HTMLElement[]}
 */
export const $$ = (
    selector: string,
    root: HTMLElement | HTMLDocument
): HTMLElement[] => {
    let result: NodeList;

    if (
        /:scope/.test(selector) &&
        IS_IE &&
        !(typeof HTMLDocument !== 'undefined' && root instanceof HTMLDocument)
    ) {
        const id: string = (root as HTMLElement).id,
            temp_id: string =
                id ||
                '_selector_id_' + ('' + Math.random()).slice(2) + $$temp++;

        selector = selector.replace(/:scope/g, '#' + temp_id);

        !id && (root as HTMLElement).setAttribute('id', temp_id);

        result = (root.parentNode as HTMLElement).querySelectorAll(selector);

        if (!id) {
            (root as HTMLElement).removeAttribute('id');
        }
    } else {
        result = root.querySelectorAll(selector);
    }

    return [].slice.call(result);
};

export const getXPathByElement = (
    element: HTMLElement,
    root: HTMLElement
): string => {
    if (!element || element.nodeType !== 1) {
        return '';
    }

    if (!element.parentNode || root === element) {
        return '';
    }

    if (element.id) {
        return "//*[@id='" + element.id + "']";
    }

    const sames: Node[] = [].filter.call(
        element.parentNode.childNodes,
        (x: Node) => x.nodeName === element.nodeName
    );

    return (
        getXPathByElement(element.parentNode as HTMLElement, root) +
        '/' +
        element.nodeName.toLowerCase() +
        (sames.length > 1
            ? '[' + (Array.from(sames).indexOf(element) + 1) + ']'
            : '')
    );
};