// Handlebar helpers
Handlebars.registerHelper('well', function(options) {
  return '<div class="well">' + options.fn(this) + '</div>';
});

/* © 2013 j201
 * https://github.com/j201/meta-marked */

// Splits the given string into a meta section and a markdown section if a meta section is present, else returns null
function splitInput(str) {
    if (str.slice(0, 3) !== '---') return;

    var matcher = /\n(\.{3}|\-{3})/g;
    var metaEnd = matcher.exec(str);

    return metaEnd && [str.slice(0, metaEnd.index), str.slice(matcher.lastIndex)];
}

var metaMarked = function(src, opt, callback) {
    if (Object.prototype.toString.call(src) !== '[object String]')
        throw new TypeError('First parameter must be a string.');

    var mySplitInput = splitInput(src);
    if (mySplitInput) {
        var meta;
        try {
            meta = jsyaml.safeLoad(mySplitInput[0]);
        } catch(e) {
            meta = null;
        }
        return {
            meta: meta,
            md: mySplitInput[1]
        };
    } else {
        return {
            meta: null,
            md: src
        }
    }
};

marked.setOptions({
    renderer: new marked.Renderer(),
    gfm: true,
    tables: true,
    breaks: false,
    pedantic: false,
    sanitize: false,
    smartLists: true,
    smartypants: false
});

// Init highlight JS
hljs.initHighlightingOnLoad();

// Markdown Renderer
var MDR = {
    meta: null,
    md: null,
    sanitize: true, // Override
    parse: function(md){ return marked(md); },
    convert: function(md, sanitize){
        if (this.sanitize !== null) {
            sanitize = this.sanitize;
        }
        this.md = md;
        this.processMeta();
        try {
            var html = this.parse(this.md);
        } catch(e) {
            return this.md;
        }

        if (sanitize) {
            // Causes some problems with inline styles
            html = html_sanitize(html, function(url) {
                if(/^(\/|https?:\/\/)/.test(url)) {
                    return url
                }
            }, function(id){
                return id;
            });
        }
        this.hook();
        return html;
    },

    processMeta: function() {
        var doc = metaMarked(this.md);
        this.md = doc.md;
        this.meta = doc.meta;
        if (this.meta) {
            try {
                var template = Handlebars.compile(this.md);
                this.md = template(this.meta);
            } catch(e) {}
        }
    },

    hook: function() {
    }
};