// jshint multistr:true

(function (w, d) {
    'use strict';

    var HLJS_LN_NAME = 'hljs-ln',
        LINE_NAME = 'hljs-ln-line',
        NUMBER_LINE_NAME = 'hljs-ln-n',
        BREAK_LINE_REGEXP = /\r\n|\r|\n/g;

    if (w.hljs) {
        w.hljs.initLineNumbersOnLoad = initLineNumbersOnLoad;
        w.hljs.lineNumbersBlock = lineNumbersBlock;
        w.hljs.lineNumbersValue = lineNumbersValue;

        addStyles();
        initLineNumbersOnLoad();
    } else {
        w.console.error('highlight.js not detected!');
    }

    function addStyles() {
        var css = d.createElement('style');
        css.type = 'text/css';
        css.innerHTML = `
            .${HLJS_LN_NAME} { display: block; }
            .${LINE_NAME}  { counter-increment: line-number-count; }
            .${NUMBER_LINE_NAME} {
                display: inline-block;
                text-align: right;
                margin-right: 2.0rem;
            }
            .${NUMBER_LINE_NAME}:before {
                content: counter(line-number-count);
            }
        `;
        d.getElementsByTagName('head')[0].appendChild(css);
    }

    function initLineNumbersOnLoad(options) {
        if (d.readyState === 'interactive' || d.readyState === 'complete') {
            documentReady(options);
        } else {
            w.addEventListener('DOMContentLoaded', function () {
                documentReady(options);
            });
        }
    }

    function documentReady(options) {
        try {
            var blocks = d.querySelectorAll('code.hljs,code.nohighlight');

            for (var i in blocks) {
                if (blocks.hasOwnProperty(i)) {
                    if (!isPluginDisabledForBlock(blocks[i])) {
                        lineNumbersBlock(blocks[i], options);
                    }
                }
            }
        } catch (e) {
            w.console.error('LineNumbers error: ', e);
        }
    }

    function isPluginDisabledForBlock(element) {
        return element.classList.contains('nohljsln');
    }

    function lineNumbersBlock(element, options) {
        if (typeof element !== 'object') return;

        async(function () {
            element.innerHTML = lineNumbersInternal(element, options);
        });
    }

    function lineNumbersValue(value, options) {
        if (typeof value !== 'string') return;

        var element = document.createElement('code')
        element.innerHTML = value

        return lineNumbersInternal(element, options);
    }

    function lineNumbersInternal(element, options) {
        var internalOptions = mapOptions(element, options);

        return addLineNumbersBlockFor(element.innerHTML, internalOptions);
    }

    function addLineNumbersBlockFor(inputHtml, options) {
        var lines = getLines(inputHtml);

        // if last line contains only carriage return remove it
        if (lines[lines.length-1].trim() === '') {
            lines.pop();
        }

        if (lines.length > 1 || options.singleLine) {
            var html = '';

            var digitCount = Math.trunc(Math.log10(lines.length));

            for (var i = 0, l = lines.length; i < l; i++) {
                var boringClass = '';
                if (lines[i].includes('boring')) {
                    boringClass = 'boring';
                }
                html += `<div class="${LINE_NAME}"
                    ><div
                        class="${NUMBER_LINE_NAME} ${boringClass}"
                        style="width: ${digitCount}em;"
                    ></div>${
                        lines[i].length > 0 ? lines[i] : '&#13;'
                    }</div>`;
            }

            return `<div
                class="${HLJS_LN_NAME}"
                style="counter-reset: line-number-count ${options.startFrom}"
            >${html}</div>`;
        }

        return inputHtml;
    }

    /**
     * @param {HTMLElement} element Code block.
     * @param {Object} options External API options.
     * @returns {Object} Internal API options.
     */
    function mapOptions(element, options) {
        options = options || {};
        return {
            singleLine: getSingleLineOption(options),
            startFrom: getStartFromOption(element, options)
        };
    }

    function getSingleLineOption(options) {
        var defaultValue = false;
        if (!!options.singleLine) {
            return options.singleLine;
        }
        return defaultValue;
    }

    function getStartFromOption(element, options) {
        var defaultValue = 0;
        var startFrom = defaultValue;

        if (isFinite(options.startFrom)) {
            startFrom = options.startFrom;
        }

        // can be overridden because local option is priority
        var value = getAttribute(element, 'data-ln-start-from');
        if (value !== null) {
            startFrom = toNumber(value, defaultValue);
        }

        return startFrom;
    }

    function getLines(text) {
        if (text.length === 0) return [];
        return text.split(BREAK_LINE_REGEXP);
    }

    function getLinesCount(text) {
        return (text.trim().match(BREAK_LINE_REGEXP) || []).length;
    }

    ///
    /// HELPERS
    ///

    function async(func) {
        w.setTimeout(func, 0);
    }

    /**
     * @param {HTMLElement} element Code block.
     * @param {String} attrName Attribute name.
     * @returns {String} Attribute value or empty.
     */
    function getAttribute(element, attrName) {
        return element.hasAttribute(attrName) ? element.getAttribute(attrName) : null;
    }

    /**
     * @param {String} str Source string.
     * @param {Number} fallback Fallback value.
     * @returns Parsed number or fallback value.
     */
    function toNumber(str, fallback) {
        if (!str) return fallback;
        var number = Number(str);
        return isFinite(number) ? number : fallback;
    }

}(window, document));

!function(r,i){"use strict";var n,c="hljs-ln",u="hljs-ln-line",a="hljs-ln-n",h=/\r\n|\r|\n/g;function e(n){"interactive"===i.readyState||"complete"===i.readyState?t(n):r.addEventListener("DOMContentLoaded",function(){t(n)})}function t(n){try{var e,t=i.querySelectorAll("code.hljs,code.nohighlight");for(e in t)!t.hasOwnProperty(e)||t[e].classList.contains("nohljsln")||l(t[e],n)}catch(n){r.console.error("LineNumbers error: ",n)}}function l(n,e){"object"==typeof n&&r.setTimeout(function(){n.innerHTML=o(n,e)},0)}function o(n,e){var e={singleLine:function(n){return n.singleLine||!1}(e=(e=e)||{}),startFrom:function(n,e){var t=0;isFinite(e.startFrom)&&(t=e.startFrom);e=function(n,e){return n.hasAttribute(e)?n.getAttribute(e):null}(n,"data-ln-start-from");null!==e&&(t=function(n,e){return n&&(n=Number(n),isFinite(n))?n:e}(e,0));return t}(n,e)},n=n.innerHTML,t=function(n){return 0===n.length?[]:n.split(h)}(n);if(""===t[t.length-1].trim()&&t.pop(),1<t.length||e.singleLine){for(var r="",i=Math.trunc(Math.log10(t.length)),l=0,o=t.length;l<o;l++){var s="";t[l].includes("boring")&&(s="boring"),r+=`<div class="${u}"
><div
class="${a} ${s}"
style="width: ${i}em;"
></div>${0<t[l].length?t[l]:"&#13;"}</div>`}return`<div
class="${c}"
style="counter-reset: line-number-count ${e.startFrom}"
>${r}</div>`}return n}r.hljs?(r.hljs.initLineNumbersOnLoad=e,r.hljs.lineNumbersBlock=l,r.hljs.lineNumbersValue=function(n,e){var t;if("string"==typeof n)return(t=document.createElement("code")).innerHTML=n,o(t,e)},(n=i.createElement("style")).type="text/css",n.innerHTML=`
.${c} { display: block; }
.${u}  { counter-increment: line-number-count; }
.${a} {
display: inline-block;
text-align: right;
margin-right: 2.0rem;
}
.${a}:before {
content: counter(line-number-count);
}
`,i.getElementsByTagName("head")[0].appendChild(n),e()):r.console.error("highlight.js not detected!")}(window,document);