/**
 * @see  https://github.com/ractivejs/ractive/blob/dev/src/utils/html.js
 */
export function escapeHtml(str) {
    return str
        .replace(/&/g, '&')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;');
}

/**
 * Prepare HTML content that contains mustache characters for use with Ractive
 * @param  {string} str
 * @return {string}
 */
export function unescapeHtml(str) {
    return str
        .replace(/&lt;/g, '<')
        .replace(/&gt;/g, '>')
        .replace(/&amp;/g, '&');
}

/**
 * Get element data attributes
 * @param   {DOMElement}  node
 * @return  {Array}       data
 */
export function getNodeData(node) {
    // All attributes
    const attributes = node.attributes;

    // Regex Pattern
    const pattern = /^data\-(.+)$/;

    // Output
    const data = {};

    for (let i in attributes) {
        if (!attributes[i]) {
            continue;
        }

        // Attributes name (ex: data-module)
        let name = attributes[i].name;

        // This happens.
        if (!name) {
            continue;
        }

        let match = name.match(pattern);
        if (!match) {
            continue;
        }

        // If this throws an error, you have some
        // serious problems in your HTML.
        data[match[1]] = getData(node.getAttribute(name));
    }

    return data;
}

const rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/;

/**
 * Parse value to data type.
 *
 * @link   https://github.com/jquery/jquery/blob/3.1.1/src/data.js
 * @param  {string} data - A value to convert.
 * @return {mixed}  Returns the value in its natural data type.
 */
export function getData(data) {
    if (data === 'true') {
        return true;
    }

    if (data === 'false') {
        return false;
    }

    if (data === 'null') {
        return null;
    }

    // Only convert to a number if it doesn't change the string
    if (data === +data+'') {
        return +data;
    }

    if (rbrace.test( data )) {
        return JSON.parse( data );
    }

    return data;
}

/**
 * Returns an array containing all the parent nodes of the given node
 * @param  {object} node
 * @return {array} parent nodes
 */
export function getParents(elem) {
    // Set up a parent array
    let parents = [];

    // Push each parent element to the array
    for ( ; elem && elem !== document; elem = elem.parentNode ) {
        parents.push(elem);
    }

    // Return our parent array
    return parents;
}

// https://gomakethings.com/how-to-get-the-closest-parent-element-with-a-matching-selector-using-vanilla-javascript/
export function queryClosestParent(elem, selector) {

    // Element.matches() polyfill
    if (!Element.prototype.matches) {
        Element.prototype.matches =
            Element.prototype.matchesSelector ||
            Element.prototype.mozMatchesSelector ||
            Element.prototype.msMatchesSelector ||
            Element.prototype.oMatchesSelector ||
            Element.prototype.webkitMatchesSelector ||
            function(s) {
                var matches = (this.document || this.ownerDocument).querySelectorAll(s),
                    i = matches.length;
                while (--i >= 0 && matches.item(i) !== this) {}
                return i > -1;
            };
    }

    // Get the closest matching element
    for ( ; elem && elem !== document; elem = elem.parentNode ) {
        if ( elem.matches( selector ) ) return elem;
    }
    return null;

};