!(function($) {
    'use strict';

    var script = {};

    script.ajax = {
        errorMessage: tr('error:ajax-request'),

        ajaxSettings: {
            $loaderEl: $('#loader'),

            beforeSend: function() {
                this.$loaderEl.show();
            },

            complete: function() {
                this.$loaderEl.hide();
            }
        },

        init: function() {
            $.ajaxSetup(this.ajaxSettings);
        },

        callbacks: {
            login: function ($form, data) {
                if (data.status === 'ok') {
                    /*
						if (data.data && data.data.redirect) {
                        window.location.href = data.data.redirect;
                    }
					*/
					location.reload();
                }
            },

            logout: function ($form, data) {
                if (data.status === 'ok') {
                    /*
                    if (data.data && data.data.redirect) {
                        window.location.href = data.data.redirect;
                    }
                   */
                   location.reload();
                }
            },

            register: function ($form, data) {
                if (data.status === 'ok') {
	                /*
                    if (data.data && data.data.redirect) {
                        window.location.href = data.data.redirect;
                    }
                    */
                    location.reload();
                }
            },
            
            change_password: function ($form, data) {
			    if (data.status === 'ok') {
				    /*
			        if (data.data && data.data.redirect) {
			            window.location.href = data.data.redirect;
			        }
			        */
			        location.reload();
			    }
			}

        }
    };

    script.ajaxform = {
        $forms: null,

        init: function(selector) {
            this.$forms = $(selector);
            this.$forms.attr('novalidate', 'novalidate');
            this.initHandler();
        },

        initHandler: function() {
            this.$forms.submit(function() {
                var $_this = $(this);
                var result = script.ajaxform.validate($_this);

                if (result === true) {
                    script.ajaxform.go($_this);
                }

                return false;
            });
        },

        callback: function($form, data) {
            var action = getURLParam('act', $form.attr('action'));

            if (!action || action === ';') {
                action = $form.find('[name|="act"]').val();
            }

            if (action !== ';' && action.length) {
                var callbackFunction = script.ajax.callbacks[action];
                if (typeof callbackFunction === 'function') {
                    callbackFunction.call(this, $form, data);
                }
            }
        },

        validate: function($form) {
            var $fields = $form.find(':input'),
                isValid = true,
                $e;

            $fields.each(function(i, e) {
                $(e).removeClass('error-message');
            });

            $form.find('.error-message').remove();

            $fields.each(function(i, e) {
                if (e.hasAttribute('required')) {
                    $e = $(e);
                    if (!$e.val().trim()) {
                        $e.addClass('error-message').focus();
                        isValid = false;
                        return isValid;
                    }
                }
            });
            return isValid;
        },

        go: function($form) {
            var method = $form.attr('method') || 'GET';
            var action = $form.attr('action') || '.';

            var ajaxSettings = {
                type: method,
                url: action,
                data: $form.serialize()
            };

            var $formInputs = $form.find('input,textarea,select');
            $formInputs.attr('readonly', 'readonly');

            var $formButtons = $form.find(':button,input[type="submit"]');

            $formButtons.attr("disabled", "disabled");

            ajaxSettings.complete = function() {
                script.ajax.ajaxSettings.$loaderEl.hide();
                $formInputs.removeAttr('readonly');
                $formButtons.removeAttr('disabled');
            };

            ajaxSettings.success = function(response) {
                var data;
                if (typeof response === 'object') {
                    // mime type application/json responsed
                    data = response;
                } else {
                    try {
                        data = JSON.parse(response);
                    } catch (e) {
                        window.alert(tr('error:form-submit'));
                        return;
                    }
                }
                script.ajaxform.validateByAjax($form, data);
            };

            $.ajax(ajaxSettings);
        },

        validateByAjax: function($form, data) {
            if (data.status === 'ok') {
                if (data.message !== undefined && data.message !== null) {
                    // window.alert(data.message);
                }
                if (data.redirect === true) {
                    if (data.url !== undefined && data.url !== null) {
                        window.location.href = data.url;
                    } else {
                        window.location.reload();
                    }
                }
            } else if (data.status === 'err') {
                var $mainErrorContainer = $form.find('.main-error');
                if (data.code === 'main') {
                    if ($mainErrorContainer !== null) {
                        $mainErrorContainer.html('<p class="error">' + data.message + '</p>');
                    } else {
                        $form.append('<p class="error">' + data.message + '</p>');
                    }
                } else {
                    var $errField = $form.find('[name|="' + data.code + '"]');
                    $mainErrorContainer.html(data.message).show();
                    $errField.focus();
                }
            }

            this.callback($form, data);
        }
    };

    function getURLParam(name, url) {
        url = url || window.location.href;
        name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
        var regexS = "[\\?&]" + name + "=([^&#]*)",
            regex = new RegExp(regexS),
            results = regex.exec(url);

        if (results === undefined || results === null) {
            return ';';
        } else {
            return decodeURIComponent(results[1].replace(/\+/g, " "));
        }
    }

    function tr(params, lang) {
            var messages = {}, translated = '',
                code;

            messages.ru_RU = {
                'error': {
                    'form-submit': 'Произошла ошибка при отправке формы',
                    'ajax-request': 'Произошла ошибка при отправке запроса'
                },

                'notice': {
                    'confirm': 'Подтвердите действие'
                }
            };
            lang = lang || 'ru_RU';
            params = params.toLowerCase().split(':');
            if (messages[lang] !== undefined && params.length) {
                for (var i = 0, msgcat = messages[lang]; i < params.length; i++) {
                    code = params[i];
                    if (typeof msgcat[code] === 'object') {
                        msgcat = msgcat[code];
                    }
                    if (typeof msgcat[code] === 'string') {
                        translated = msgcat[code];
                        break;
                    }
                }
            }
            return translated;
        }

        script.init = function() {
            this.ajaxform.init('form.ajax');
            this.ajax.init();
        };

        $(document).ready(function($) {
            script.init();
        });
})(jQuery);