// Mermaid diagram stub library for on-demand dynamic loading
// Will be overwritten after script loading by $.getScript
var mermaid = (function () {
    var enabled /* = undefined */;
    
    var initializing = false;
    var initCalled = false;

    function initialize(opt) {
        if (enabled === undefined) {
            if (RED.settings.markdownEditor &&
                RED.settings.markdownEditor.mermaid) {
                enabled = RED.settings.markdownEditor.mermaid.enabled;
            }
            else {
                enabled = true;
            }
        }
        if (enabled) {
            initializing = true;
            $.getScript("vendor/mermaid/mermaid.min.js",
                        function (data, stat, jqxhr) {
                            $(".mermaid").show();
                            // invoke loaded mermaid API
                            initializing = false; 
                            mermaid.initialize(opt);
                            if (initCalled) {
                                mermaid.init();
                                initCalled = false;
                            }
                        });
        }
    }

    function init() {
        if (initializing) {
            $(".mermaid").hide();
            initCalled = true;
        }
    }
    
    return {
        initialize: initialize,
        init: init,
    };
})();