// Copyright (c) IPython Development Team.
// Distributed under the terms of the Modified BSD License.

require([
    'jquery',
    'base/js/namespace',
    'base/js/dialog',
    'base/js/events',
    'base/js/page',
    'base/js/utils',
    'contents',
    'tree/js/notebooklist',
    'tree/js/clusterlist',
    'tree/js/sessionlist',
    'tree/js/kernellist',
    'tree/js/terminallist',
    'auth/js/loginwidget',
    // only loaded, not used:
    'jqueryui',
    'bootstrap',
    'custom/custom',
], function(
    $,
    IPython,
    dialog,
    events,
    page,
    utils,
    contents_service,
    notebooklist, 
    clusterlist, 
    sesssionlist, 
    kernellist,
    terminallist,
    loginwidget){
    "use strict";

    page = new page.Page();
    
    var common_options = {
        base_url: utils.get_body_data("baseUrl"),
        notebook_path: utils.get_body_data("notebookPath"),
    };
    var session_list = new sesssionlist.SesssionList($.extend({
        events: events}, 
        common_options));
    var contents = new contents_service.Contents($.extend({
        events: events},
        common_options));
    var notebook_list = new notebooklist.NotebookList('#notebook_list', $.extend({
        contents: contents,
        session_list:  session_list}, 
        common_options));
    var cluster_list = new clusterlist.ClusterList('#cluster_list', common_options);
    var kernel_list = new kernellist.KernelList('#running_list',  $.extend({
        session_list:  session_list}, 
        common_options));
    
    var terminal_list;
    if (utils.get_body_data("terminalsAvailable") === "True") {
        terminal_list = new terminallist.TerminalList('#terminal_list', common_options);
    }

    var login_widget = new loginwidget.LoginWidget('#login_widget', common_options);

    $('#new_notebook').click(function (e) {
        var w = window.open();
        contents.new_untitled(common_options.notebook_path, {type: "notebook"}).then(
                function (data) {
                    w.location = utils.url_join_encode(
                            common_options.base_url, 'notebooks', data.path
                        );
                },
                function(error) {
                    w.close();
                    dialog.modal({
                        title : 'Creating Notebook Failed',
                        body : "The error was: " + error.message,
                        buttons : {'OK' : {'class' : 'btn-primary'}}
                    });
                }
            );
    });

    var interval_id=0;
    // auto refresh every xx secondes, no need to be fast,
    //  update is done at least when page get focus
    var time_refresh = 60; // in sec

    var enable_autorefresh = function(){
        //refresh immediately , then start interval
        session_list.load_sessions();
        cluster_list.load_list();
	if (terminal_list) {
	    terminal_list.load_terminals();
	}
        if (!interval_id){
            interval_id = setInterval(function(){
                    session_list.load_sessions();
                    cluster_list.load_list();
		    if (terminal_list) {
		        terminal_list.load_terminals();
		    }
                }, time_refresh*1000);
            }
    };

    var disable_autorefresh = function(){
        clearInterval(interval_id);
        interval_id = 0;
    };

    // stop autorefresh when page lose focus
    $(window).blur(function() {
        disable_autorefresh();
    });

    //re-enable when page get focus back
    $(window).focus(function() {
        enable_autorefresh();
    });

    // finally start it, it will refresh immediately
    enable_autorefresh();

    page.show();

    // For backwards compatability.
    IPython.page = page;
    IPython.notebook_list = notebook_list;
    IPython.cluster_list = cluster_list;
    IPython.session_list = session_list;
    IPython.kernel_list = kernel_list;
    IPython.login_widget = login_widget;

    events.trigger('app_initialized.DashboardApp');
    
    // bound the upload method to the on change of the file select list
    $("#alternate_upload").change(function (event){
        notebook_list.handleFilesUpload(event,'form');
    });
    
    // set hash on tab click
    $("#tabs").find("a").click(function() {
        window.location.hash = $(this).attr("href");
    });
    
    // load tab if url hash
    if (window.location.hash) {
        $("#tabs").find("a[href=" + window.location.hash + "]").click();
    }
});