(function() {
    'use strict';

    angular.module('shared')
        .service('LazModalService', ['ModalService', '$q', '$templateRequest', function(ModalService, $q, $templateRequest) {
            var service = this;

            service.showModal = function(options) {
                disableLocationChangeSuccessByDefault(options);
                return getTemplate(options.template, options.templateUrl)
                    .then(function(template) {
                        options.template = wrapTemplateInLazModal(template, options);
                        return ModalService.showModal(options);
                    });
            };

            function disableLocationChangeSuccessByDefault(options) {
                if (options.locationChangeSuccess == null) {
                    options.locationChangeSuccess = false;
                }
            }

            function getTemplate(template, templateUrl) {
                var deferred = $q.defer();
                if (template) {
                    deferred.resolve(template);
                } else if (templateUrl) {
                    $templateRequest(templateUrl, true)
                        .then(function(template) {
                            deferred.resolve(template);
                        }, function(error) {
                            deferred.reject(error);
                        });
                } else {
                    deferred.reject("No template or templateUrl has been specified.");
                }
                return deferred.promise;
            }

            function wrapTemplateInLazModal(template, options) {
                var attributes = getLazModalAttributes(options);
                return '<laz-modal ' + attributes + '>' + template + '</laz-modal>';
            }

            function getLazModalAttributes(options) {
                var onCloseHtmlAttribute = getOnCloseHtmlAttribute(options);
                var overrideClassAttribute = getOverrideClassHtmlAttribute(options);
                var overrideFocusIdHtmlAttribute = getOverrideFocusIdHtmlAttribute(options);
                var overrideStyleHtmlAttribute = getOverrideStyleHtmlAttribute(options);
                var hideCloseButtonHtmlAttribute = getHideCloseButtonHtmlAttribute(options);
                var overrideReturnFocusClassHtmlAttribute = getOverrideReturnFocusClassHtmlAttribute();
                return onCloseHtmlAttribute + ' ' +
                    overrideClassAttribute + ' ' +
                    overrideFocusIdHtmlAttribute + ' ' +
                    overrideStyleHtmlAttribute + ' ' +
                    hideCloseButtonHtmlAttribute + ' ' +
                    overrideReturnFocusClassHtmlAttribute;
            }

            function getOnCloseHtmlAttribute(options) {
                if (options.hasOwnProperty('onClose')) {
                    return 'on-close="' + options.onClose + '"';
                } else {
                    return 'on-close="$ctrl.close"';
                }
            }

            function getOverrideClassHtmlAttribute(options) {
                if (options.hasOwnProperty('overrideClass')) {
                    return 'override-class="' + options.overrideClass + '"';
                } else {
                    return '';
                }
            }

            function getOverrideFocusIdHtmlAttribute(options) {
                if (options.hasOwnProperty('overrideFocusId')) {
                    return 'override-focus-id="' + options.overrideFocusId + '"';
                } else {
                    return '';
                }
            }

            function getOverrideStyleHtmlAttribute(options) {
                if (options.hasOwnProperty('overrideStyle')) {
                    return 'override-style="' + options.overrideStyle + '"';
                } else {
                    return '';
                }
            }

            function getHideCloseButtonHtmlAttribute(options) {
                if (options.hasOwnProperty('hideCloseButton')) {
                    return 'hide-close-button="' + options.hideCloseButton + '"';
                } else {
                    return '';
                }
            }

            function getOverrideReturnFocusClassHtmlAttribute() {
                var activeElement = angular.element(document.activeElement);
                if (activeElement) {
                    activeElement.addClass('js-elementThatOpenedModal');
                    return 'override-return-focus-class="js-elementThatOpenedModal"';
                } else {
                    return '';
                }
            }
       }]);
})();