// ************************************************************************* 
// Copyright (c) 2014, SUSE LLC
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 
// 3. Neither the name of SUSE LLC nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// ************************************************************************* 
//
// login-dialog
//
"use strict";

define ([
    'jquery', 
    'ajax', 
    'html', 
    'lib'
], function (
    $, 
    ajax, 
    html, 
    lib
) {

    return function () {

        // submitCallback is called when user submits login dialog form 

        var submitCallback = function (event) {
            event.preventDefault();
            var rest = {
                    "method": 'LOGIN',
                    "path": 'login',
                    "body": { nam: $('input[name="nam"]').val(),
                              pwd: $('input[name="pwd"]').val() }
                },
                // success callback
                sc = function (st) {
        	    // trigger GET request to the server -- no console.log messages here
        	    // because the reload will make them go away
                    location.reload();
                },
                // failure callback
                fc = function (st) {
                    $('#result').html('Login to REST server failed with code ' + st.payload.code + 
                                      ' (' + st.payload.message + ')');
                    $('input[name="nam"]').focus();
                    $('input[name="pwd"]').val('');
                };
            ajax(rest, sc, fc);
        },

        // formHandler processes user input in login dialog form

        formHandler = function () {
            $('input[name="nam"]').val('').focus();
            $('input[name="pwd"]').val('');

            // Set up form submit callback
            $('#loginform').submit(submitCallback);

            // Set up listener for <ENTER> keypresses in "username" field
            $('input[name="nam"]').keydown(function (event) {
                lib.logKeyPress(event);
                if (event.keyCode === 13) {
                    event.preventDefault();
                    $('input[name="pwd"]').focus();
                }
            });

            // Set up listener for <ENTER> and <TAB> keypresses in "password" field
            $('input[name="pwd"]').keydown(function (event) {
                lib.logKeyPress(event);
                if (event.keyCode === 13) {
                    // event.preventDefault();
                    submitCallback(event);
                } else if (event.keyCode === 9) {
                    event.preventDefault();
                    $('input[name="nam"]').focus();
                }
            });
        };

        // display login dialog form HTML
        $('#mainarea').html(html.loginDialog());

        // pass control to the form handler
        formHandler();

    }
});
