/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
var RED = (function() {


    function loadPluginList() {
        loader.reportProgress(RED._("event.loadPlugins"), 10)
        $.ajax({
            headers: {
                "Accept":"application/json"
            },
            cache: false,
            url: 'plugins',
            success: function(data) {
                loader.reportProgress(RED._("event.loadPlugins"), 13)
                RED.i18n.loadPluginCatalogs(function() {
                    loadPlugins(function() {
                        loadNodeList();
                    });
                });
            }
        });
    }
    function loadPlugins(done) {
        loader.reportProgress(RED._("event.loadPlugins",{count:""}), 17)
        var lang = localStorage.getItem("editor-language")||RED.i18n.detectLanguage();

        $.ajax({
            headers: {
                "Accept":"text/html",
                "Accept-Language": lang
            },
            cache: false,
            url: 'plugins',
            success: function(data) {
                var configs = data.trim().split(/(?=<!-- --- \[red-plugin:\S+\] --- -->)/);
                var totalCount = configs.length;
                var stepConfig = function() {
                    // loader.reportProgress(RED._("event.loadNodes",{count:(totalCount-configs.length)+"/"+totalCount}), 30 + ((totalCount-configs.length)/totalCount)*40 )
                    if (configs.length === 0) {
                        done();
                    } else {
                        var config = configs.shift();
                        appendPluginConfig(config,stepConfig);
                    }
                }
                stepConfig();
            }
        });
    }

    function appendConfig(config, moduleIdMatch, targetContainer, done) {
        done = done || function(){};
        var moduleId;
        if (moduleIdMatch) {
            moduleId = moduleIdMatch[1];
            RED._loadingModule = moduleId;
        } else {
            moduleId = "unknown";
        }
        try {
            var hasDeferred = false;
            var nodeConfigEls = $("<div>"+config+"</div>");
            var scripts = nodeConfigEls.find("script");
            var scriptCount = scripts.length;
            scripts.each(function(i,el) {
                var srcUrl = $(el).attr('src');
                if (srcUrl && !/^\s*(https?:|\/|\.)/.test(srcUrl)) {
                    $(el).remove();
                    var newScript = document.createElement("script");
                    newScript.onload = function() {
                        scriptCount--;
                        if (scriptCount === 0) {
                            $(targetContainer).append(nodeConfigEls);
                            delete RED._loadingModule;
                            done()
                        }
                    }
                    if ($(el).attr('type') === "module") {
                        newScript.type = "module";
                    }
                    $(targetContainer).append(newScript);
                    newScript.src = RED.settings.apiRootUrl+srcUrl;
                    hasDeferred = true;
                } else {
                    if (/\/ace.js$/.test(srcUrl) || /\/ext-language_tools.js$/.test(srcUrl)) {
                        // Block any attempts to load ace.js from a CDN - this will
                        // break the version of ace included in the editor.
                        // At the time of commit, the contrib-python nodes did this.
                        // This is a crude fix until the python nodes are fixed.
                        console.warn("Blocked attempt to load",srcUrl,"by",moduleId)
                        $(el).remove();
                    }
                    scriptCount--;
                }
            })
            if (!hasDeferred) {
                $(targetContainer).append(nodeConfigEls);
                delete RED._loadingModule;
                done();
            }
        } catch(err) {
            RED.notify(RED._("notification.errors.failedToAppendNode",{module:moduleId, error:err.toString()}),{
                type: "error",
                timeout: 10000
            });
            console.log("["+moduleId+"] "+err.toString());
            delete RED._loadingModule;
            done();
        }
    }
    function appendPluginConfig(pluginConfig,done) {
        appendConfig(
            pluginConfig,
            /<!-- --- \[red-plugin:(\S+)\] --- -->/.exec(pluginConfig.trim()),
            "#red-ui-editor-plugin-configs",
            done
        );
    }

    function appendNodeConfig(nodeConfig,done) {
        appendConfig(
            nodeConfig,
            /<!-- --- \[red-module:(\S+)\] --- -->/.exec(nodeConfig.trim()),
            "#red-ui-editor-node-configs",
            done
        );
    }

    function loadNodeList() {
        loader.reportProgress(RED._("event.loadPalette"), 20)
        $.ajax({
            headers: {
                "Accept":"application/json"
            },
            cache: false,
            url: 'nodes',
            success: function(data) {
                RED.nodes.setNodeList(data);
                loader.reportProgress(RED._("event.loadNodeCatalogs"), 25)
                RED.i18n.loadNodeCatalogs(function() {
                    loadIconList(loadNodes);
                });
            }
        });
    }

    function loadIconList(done) {
        $.ajax({
            headers: {
                "Accept":"application/json"
            },
            cache: false,
            url: 'icons',
            success: function(data) {
                RED.nodes.setIconSets(data);
                if (done) {
                    done();
                }
            }
        });
    }

    function loadNodes() {
        loader.reportProgress(RED._("event.loadNodes",{count:""}), 30)
        var lang = localStorage.getItem("editor-language")||RED.i18n.detectLanguage();

        $.ajax({
            headers: {
                "Accept":"text/html",
                "Accept-Language": lang
            },
            cache: false,
            url: 'nodes',
            success: function(data) {
                var configs = data.trim().split(/(?=<!-- --- \[red-module:\S+\] --- -->)/);
                var totalCount = configs.length;

                var stepConfig = function() {
                    loader.reportProgress(RED._("event.loadNodes",{count:(totalCount-configs.length)+"/"+totalCount}), 30 + ((totalCount-configs.length)/totalCount)*40 )

                    if (configs.length === 0) {
                        $("#red-ui-editor").i18n();
                        $("#red-ui-palette > .red-ui-palette-spinner").hide();
                        $(".red-ui-palette-scroll").removeClass("hide");
                        $("#red-ui-palette-search").removeClass("hide");
                        if (RED.settings.theme("projects.enabled",false)) {
                            RED.projects.refresh(function(activeProject) {
                                loadFlows(function() {
                                    RED.sidebar.info.refresh()
                                    if (!activeProject) {
                                        // Projects enabled but no active project
                                        RED.menu.setDisabled('menu-item-projects-open',true);
                                        RED.menu.setDisabled('menu-item-projects-settings',true);
                                        if (activeProject === false) {
                                            // User previously decline the migration to projects.
                                        } else { // null/undefined
                                            RED.projects.showStartup();
                                        }
                                    }
                                    completeLoad();
                                });
                            });
                        } else {
                            loadFlows(function() {
                                // Projects disabled by the user
                                RED.sidebar.info.refresh()
                                completeLoad();
                            });
                        }
                    } else {
                        var config = configs.shift();
                        appendNodeConfig(config,stepConfig);
                    }
                }
                stepConfig();
            }
        });
    }

    function loadFlows(done) {
        loader.reportProgress(RED._("event.loadFlows"),80 )
        $.ajax({
            headers: {
                "Accept":"application/json",
            },
            cache: false,
            url: 'flows',
            success: function(nodes) {
                if (nodes) {
                    var currentHash = window.location.hash;
                    RED.nodes.version(nodes.rev);
                    loader.reportProgress(RED._("event.importFlows"),90 )
                    try {
                        RED.nodes.import(nodes.flows);
                        RED.nodes.dirty(false);
                        RED.view.redraw(true);
                        if (/^#flow\/.+$/.test(currentHash)) {
                            RED.workspaces.show(currentHash.substring(6),true);
                        }
                    } catch(err) {
                        console.warn(err);
                        RED.notify(
                            RED._("event.importError", {message: err.message}),
                            {
                                fixed: true,
                                type: 'error'
                            }
                        );
                    }
                }
                done();
            }
        });
    }

    function completeLoad() {
        var persistentNotifications = {};
        RED.comms.subscribe("notification/#",function(topic,msg) {
            var parts = topic.split("/");
            var notificationId = parts[1];
            if (notificationId === "runtime-deploy") {
                // handled in ui/deploy.js
                return;
            }
            if (notificationId === "node") {
                // handled below
                return;
            }
            if (notificationId === "project-update") {
                loader.start(RED._("event.loadingProject"), 0);
                RED.nodes.clear();
                RED.history.clear();
                RED.view.redraw(true);
                RED.projects.refresh(function() {
                    loadFlows(function() {
                        var project = RED.projects.getActiveProject();
                        var message = {
                            "change-branch": RED._("notification.project.change-branch", {project: project.git.branches.local}),
                            "merge-abort": RED._("notification.project.merge-abort"),
                            "loaded": RED._("notification.project.loaded", {project: msg.project}),
                            "updated": RED._("notification.project.updated", {project: msg.project}),
                            "pull": RED._("notification.project.pull", {project: msg.project}),
                            "revert": RED._("notification.project.revert", {project: msg.project}),
                            "merge-complete": RED._("notification.project.merge-complete")
                        }[msg.action];
                        loader.end()
                        RED.notify($("<p>").text(message));
                        RED.sidebar.info.refresh()
                    });
                });
                return;
            }

            if (msg.text) {
                msg.default = msg.text;
                var text = RED._(msg.text,msg);
                var options = {
                    type: msg.type,
                    fixed: msg.timeout === undefined,
                    timeout: msg.timeout,
                    id: notificationId
                }
                if (notificationId === "runtime-state") {
                    RED.events.emit("runtime-state",msg);
                    if (msg.error === "safe-mode") {
                        options.buttons = [
                            {
                                text: RED._("common.label.close"),
                                click: function() {
                                    persistentNotifications[notificationId].hideNotification();
                                }
                            }
                        ]
                    } else if (msg.error === "missing-types") {
                        text+="<ul><li>"+msg.types.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                        if (!!RED.projects.getActiveProject()) {
                            options.buttons = [
                                {
                                    text: RED._("notification.label.manage-project-dep"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                        RED.projects.settings.show('deps');
                                    }
                                }
                            ]
                            // } else if (RED.settings.get('externalModules.palette.allowInstall', true) !== false) {
                        } else {
                            options.buttons = [
                                {
                                    text: RED._("common.label.close"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                    }
                                }
                            ]
                        }
                    } else if (msg.error === "missing-modules") {
                        text+="<ul><li>"+msg.modules.map(function(m) { return RED.utils.sanitize(m.module)+(m.error?(" - <small>"+RED.utils.sanitize(""+m.error)+"</small>"):"")}).join("</li><li>")+"</li></ul>";
                        options.buttons = [
                            {
                                text: RED._("common.label.close"),
                                click: function() {
                                    persistentNotifications[notificationId].hideNotification();
                                }
                            }
                        ]
                    } else if (msg.error === "credentials_load_failed") {
                        if (RED.settings.theme("projects.enabled",false)) {
                            // projects enabled
                            if (RED.user.hasPermission("projects.write")) {
                                options.buttons = [
                                    {
                                        text: RED._("notification.project.setupCredentials"),
                                        click: function() {
                                            persistentNotifications[notificationId].hideNotification();
                                            RED.projects.showCredentialsPrompt();
                                        }
                                    }
                                ]
                            }
                        } else {
                            options.buttons = [
                                {
                                    text: RED._("common.label.close"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                    }
                                }
                            ]
                        }
                    } else if (msg.error === "missing_flow_file") {
                        if (RED.user.hasPermission("projects.write")) {
                            options.buttons = [
                                {
                                    text: RED._("notification.project.setupProjectFiles"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                        RED.projects.showFilesPrompt();
                                    }
                                }
                            ]
                        }
                    } else if (msg.error === "missing_package_file") {
                        if (RED.user.hasPermission("projects.write")) {
                            options.buttons = [
                                {
                                    text: RED._("notification.project.setupProjectFiles"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                        RED.projects.showFilesPrompt();
                                    }
                                }
                            ]
                        }
                    } else if (msg.error === "project_empty") {
                        if (RED.user.hasPermission("projects.write")) {
                            options.buttons = [
                                {
                                    text: RED._("notification.project.no"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                    }
                                },
                                {
                                    text: RED._("notification.project.createDefault"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                        RED.projects.createDefaultFileSet();
                                    }
                                }
                            ]
                        }
                    } else if (msg.error === "git_merge_conflict") {
                        RED.nodes.clear();
                        RED.sidebar.versionControl.refresh(true);
                        if (RED.user.hasPermission("projects.write")) {
                            options.buttons = [
                                {
                                    text: RED._("notification.project.mergeConflict"),
                                    click: function() {
                                        persistentNotifications[notificationId].hideNotification();
                                        RED.sidebar.versionControl.showLocalChanges();
                                    }
                                }
                            ]
                        }
                    }
                }
                if (!persistentNotifications.hasOwnProperty(notificationId)) {
                    persistentNotifications[notificationId] = RED.notify(text,options);
                } else {
                    persistentNotifications[notificationId].update(text,options);
                }
            } else if (persistentNotifications.hasOwnProperty(notificationId)) {
                persistentNotifications[notificationId].close();
                delete persistentNotifications[notificationId];
                if (notificationId === 'runtime-state') {
                    RED.events.emit("runtime-state",msg);
                }
            }
        });
        RED.comms.subscribe("status/#",function(topic,msg) {
            var parts = topic.split("/");
            var node = RED.nodes.node(parts[1]);
            if (node) {
                if (msg.hasOwnProperty("text") && msg.text !== null && /^[a-zA-Z]/.test(msg.text)) {
                    msg.text = node._(msg.text.toString(),{defaultValue:msg.text.toString()});
                }
                node.status = msg;
                node.dirtyStatus = true;
                node.dirty = true;
                RED.view.redrawStatus(node);
            }
        });
        RED.comms.subscribe("notification/node/#",function(topic,msg) {
            var i,m;
            var typeList;
            var info;
            if (topic == "notification/node/added") {
                var addedTypes = [];
                msg.forEach(function(m) {
                    var id = m.id;
                    RED.nodes.addNodeSet(m);
                    addedTypes = addedTypes.concat(m.types);
                    RED.i18n.loadNodeCatalog(id, function() {
                        $.get('nodes/'+id, function(data) {
                            appendNodeConfig(data);
                        });
                    });
                });
                if (addedTypes.length) {
                    typeList = "<ul><li>"+addedTypes.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                    RED.notify(RED._("palette.event.nodeAdded", {count:addedTypes.length})+typeList,"success");
                }
                loadIconList();
            } else if (topic == "notification/node/removed") {
                for (i=0;i<msg.length;i++) {
                    m = msg[i];
                    info = RED.nodes.removeNodeSet(m.id);
                    if (info.added) {
                        typeList = "<ul><li>"+m.types.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                        RED.notify(RED._("palette.event.nodeRemoved", {count:m.types.length})+typeList,"success");
                    }
                }
                loadIconList();
            } else if (topic == "notification/node/enabled") {
                if (msg.types) {
                    info = RED.nodes.getNodeSet(msg.id);
                    if (info.added) {
                        RED.nodes.enableNodeSet(msg.id);
                        typeList = "<ul><li>"+msg.types.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                        RED.notify(RED._("palette.event.nodeEnabled", {count:msg.types.length})+typeList,"success");
                    } else {
                        $.get('nodes/'+msg.id, function(data) {
                            appendNodeConfig(data);
                            typeList = "<ul><li>"+msg.types.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                            RED.notify(RED._("palette.event.nodeAdded", {count:msg.types.length})+typeList,"success");
                        });
                    }
                }
            } else if (topic == "notification/node/disabled") {
                if (msg.types) {
                    RED.nodes.disableNodeSet(msg.id);
                    typeList = "<ul><li>"+msg.types.map(RED.utils.sanitize).join("</li><li>")+"</li></ul>";
                    RED.notify(RED._("palette.event.nodeDisabled", {count:msg.types.length})+typeList,"success");
                }
            } else if (topic == "notification/node/upgraded") {
                RED.notify(RED._("palette.event.nodeUpgraded", {module:msg.module,version:msg.version}),"success");
                RED.nodes.registry.setModulePendingUpdated(msg.module,msg.version);
            }
        });
        RED.comms.subscribe("event-log/#", function(topic,payload) {
            var id = topic.substring(9);
            RED.eventLog.log(id,payload);
        });

        $(".red-ui-header-toolbar").show();


        RED.sidebar.show(":first");

        setTimeout(function() {
            loader.end();
        },100);
    }

    function showAbout() {
        $.get('red/about', function(data) {
            // data will be strictly markdown. Any HTML should be escaped.
            data = RED.utils.sanitize(data);
            var aboutHeader = '<div style="text-align:center;">'+
            '<img width="50px" src="red/images/node-red-icon.svg" />'+
            '</div>';

            RED.sidebar.help.set(aboutHeader+RED.utils.renderMarkdown(data));
        });
    }

    function buildMainMenu() {
        var menuOptions = [];
        if (RED.settings.theme("projects.enabled",false)) {
            menuOptions.push({id:"menu-item-projects-menu",label:RED._("menu.label.projects"),options:[
                {id:"menu-item-projects-new",label:RED._("menu.label.projects-new"),disabled:false,onselect:"core:new-project"},
                {id:"menu-item-projects-open",label:RED._("menu.label.projects-open"),disabled:false,onselect:"core:open-project"},
                {id:"menu-item-projects-settings",label:RED._("menu.label.projects-settings"),disabled:false,onselect:"core:show-project-settings"}
            ]});
        }
        menuOptions.push({id:"menu-item-view-menu",label:RED._("menu.label.view.view"),options:[
            {id:"menu-item-palette",label:RED._("menu.label.palette.show"),toggle:true,onselect:"core:toggle-palette", selected: true},
            {id:"menu-item-sidebar",label:RED._("menu.label.sidebar.show"),toggle:true,onselect:"core:toggle-sidebar", selected: true},
            {id:"menu-item-event-log",label:RED._("eventLog.title"),onselect:"core:show-event-log"},
            {id:"menu-item-action-list",label:RED._("keyboard.actionList"),onselect:"core:show-action-list"},
            null
        ]});
        menuOptions.push(null);
        if (RED.settings.theme("menu.menu-item-import-library", true)) {
            menuOptions.push({id: "menu-item-import", label: RED._("menu.label.import"), onselect: "core:show-import-dialog"});
        }
        if (RED.settings.theme("menu.menu-item-export-library", true)) {
            menuOptions.push({id: "menu-item-export", label: RED._("menu.label.export"), onselect: "core:show-export-dialog"});
        }
        menuOptions.push(null);
        menuOptions.push({id:"menu-item-search",label:RED._("menu.label.search"),onselect:"core:search"});
        menuOptions.push(null);
        menuOptions.push({id:"menu-item-config-nodes",label:RED._("menu.label.displayConfig"),onselect:"core:show-config-tab"});
        menuOptions.push({id:"menu-item-workspace",label:RED._("menu.label.flows"),options:[
            {id:"menu-item-workspace-add",label:RED._("menu.label.add"),onselect:"core:add-flow"},
            {id:"menu-item-workspace-edit",label:RED._("menu.label.rename"),onselect:"core:edit-flow"},
            {id:"menu-item-workspace-delete",label:RED._("menu.label.delete"),onselect:"core:remove-flow"}
        ]});
        menuOptions.push({id:"menu-item-subflow",label:RED._("menu.label.subflows"), options: [
            {id:"menu-item-subflow-create",label:RED._("menu.label.createSubflow"),onselect:"core:create-subflow"},
            {id:"menu-item-subflow-convert",label:RED._("menu.label.selectionToSubflow"),disabled:true,onselect:"core:convert-to-subflow"},
        ]});
        menuOptions.push({id:"menu-item-group",label:RED._("menu.label.groups"), options: [
            {id:"menu-item-group-group",label:RED._("menu.label.groupSelection"),disabled:true,onselect:"core:group-selection"},
            {id:"menu-item-group-ungroup",label:RED._("menu.label.ungroupSelection"),disabled:true,onselect:"core:ungroup-selection"},
            null,
            {id:"menu-item-group-merge",label:RED._("menu.label.groupMergeSelection"),disabled:true,onselect:"core:merge-selection-to-group"},
            {id:"menu-item-group-remove",label:RED._("menu.label.groupRemoveSelection"),disabled:true,onselect:"core:remove-selection-from-group"}
        ]});

        menuOptions.push(null);
        if (RED.settings.get('externalModules.palette.allowInstall', true) !== false) {
            menuOptions.push({id:"menu-item-edit-palette",label:RED._("menu.label.editPalette"),onselect:"core:manage-palette"});
            menuOptions.push(null);
        }

        menuOptions.push({id:"menu-item-user-settings",label:RED._("menu.label.settings"),onselect:"core:show-user-settings"});
        menuOptions.push(null);

        if (RED.settings.theme("menu.menu-item-keyboard-shortcuts", true)) {
            menuOptions.push({id: "menu-item-keyboard-shortcuts", label: RED._("menu.label.keyboardShortcuts"), onselect: "core:show-help"});
        }
        menuOptions.push({id:"menu-item-help",
            label: RED.settings.theme("menu.menu-item-help.label",RED._("menu.label.help")),
            href: RED.settings.theme("menu.menu-item-help.url","http://nodered.org/docs")
        });
        menuOptions.push({id:"menu-item-node-red-version", label:"v"+RED.settings.version, onselect: "core:show-about" });


        $('<li><a id="red-ui-header-button-sidemenu" class="button" href="#"><i class="fa fa-bars"></i></a></li>').appendTo(".red-ui-header-toolbar")
        RED.menu.init({id:"red-ui-header-button-sidemenu",options: menuOptions});

    }

    function loadEditor() {
        RED.workspaces.init();
        RED.statusBar.init();
        RED.view.init();
        RED.userSettings.init();
        RED.user.init();
        RED.notifications.init();
        RED.library.init();
        RED.keyboard.init();
        RED.palette.init();
        RED.eventLog.init();

        if (RED.settings.get('externalModules.palette.allowInstall', true) !== false) {
            RED.palette.editor.init();
        } else {
            console.log("Palette editor disabled");
        }

        RED.sidebar.init();

        if (RED.settings.theme("projects.enabled",false)) {
            RED.projects.init();
        } else {
            console.log("Projects disabled");
        }

        RED.subflow.init();
        RED.group.init();
        RED.clipboard.init();
        RED.search.init();
        RED.actionList.init();
        RED.editor.init();
        RED.diff.init();


        RED.deploy.init(RED.settings.theme("deployButton",null));

        buildMainMenu();

        RED.nodes.init();
        RED.comms.connect();

        $("#red-ui-main-container").show();


        RED.actions.add("core:show-about", showAbout);

        loadPluginList();
    }


    function buildEditor(options) {
        var header = $('<div id="red-ui-header"></div>').appendTo(options.target);
        var logo = $('<span class="red-ui-header-logo"></span>').appendTo(header);
        $('<ul class="red-ui-header-toolbar hide"></ul>').appendTo(header);
        $('<div id="red-ui-header-shade" class="hide"></div>').appendTo(header);
        $('<div id="red-ui-main-container" class="red-ui-sidebar-closed hide">'+
            '<div id="red-ui-workspace"></div>'+
            '<div id="red-ui-editor-stack"></div>'+
            '<div id="red-ui-palette"></div>'+
            '<div id="red-ui-sidebar"></div>'+
            '<div id="red-ui-sidebar-separator"></div>'+
        '</div>').appendTo(options.target);
        $('<div id="red-ui-editor-plugin-configs"></div>').appendTo(options.target);
        $('<div id="red-ui-editor-node-configs"></div>').appendTo(options.target);
        $('<div id="red-ui-full-shade" class="hide"></div>').appendTo(options.target);

        loader.init().appendTo("#red-ui-main-container");
        loader.start("...",0);

        $.getJSON(options.apiRootUrl+"theme", function(theme) {
            if (theme.header) {
                if (theme.header.url) {
                    logo = $("<a>",{href:theme.header.url}).appendTo(logo);
                }
                if (theme.header.image) {
                    $('<img>',{src:theme.header.image}).appendTo(logo);
                }
                if (theme.header.title) {
                    $('<span>').html(theme.header.title).appendTo(logo);
                }
            }
            if (theme.themes) {
                knownThemes = theme.themes;
            }
        });
    }
    var knownThemes = null;
    var initialised = false;

    function init(options) {
        if (initialised) {
            throw new Error("RED already initialised");
        }
        initialised = true;
        if(window.ace) { window.ace.require("ace/ext/language_tools"); }
        options = options || {};
        options.apiRootUrl = options.apiRootUrl || "";
        if (options.apiRootUrl && !/\/$/.test(options.apiRootUrl)) {
            options.apiRootUrl = options.apiRootUrl+"/";
        }
        options.target = $("#red-ui-editor");
        options.target.addClass("red-ui-editor");

        buildEditor(options);

        RED.i18n.init(options, function() {
            RED.settings.init(options, function() {
                if (knownThemes) {
                    RED.settings.editorTheme = RED.settings.editorTheme || {};
                    RED.settings.editorTheme.themes = knownThemes;
                }
                loadEditor();
            });
        })
    }

    var loader = {
        init: function() {
            var wrapper = $('<div id="red-ui-loading-progress"></div>').hide();
            var container = $('<div>').appendTo(wrapper);
            var label = $('<div>',{class:"red-ui-loading-bar-label"}).appendTo(container);
            var bar = $('<div>',{class:"red-ui-loading-bar"}).appendTo(container);
            var fill =$('<span>').appendTo(bar);
            return wrapper;
        },
        start: function(text, prcnt) {
            if (text) {
                loader.reportProgress(text,prcnt)
            }
            $("#red-ui-loading-progress").show();
        },
        reportProgress: function(text, prcnt) {
            $(".red-ui-loading-bar-label").text(text);
            $(".red-ui-loading-bar span").width(prcnt+"%")
        },
        end: function() {
            $("#red-ui-loading-progress").hide();
            loader.reportProgress("",0);
        }
    }

    return {
        init: init,
        loader: loader
    }
})();