client-ui/source/shared/state-change-manager-service.js

Testing implementation of nodeJs Backend, angular frontend, and hopefully in a way that this can be deployed to s3/cloudfront

angular.module(moduleName).service('stateChangeManager', ['$interval', '$state', '$rootScope', function ($interval, $state, $rootScope) {
        var self = this;
        self.tasks = [];
        self.doTasks = doTasks;
        self.addTask = addTask;
        self.doUntilStateChange = doUntilStateChange;
        self.doAfterStateChange = doAfterStateChange;

        function doTasks() {
            var currentTask;
            while (currentTask = self.tasks.pop()) {
                if (typeof currentTask === 'function') {
                    currentTask();
                }
            }
        }

        function addTask(task) {
            self.tasks.push(task);
        }

        function doUntilStateChange(task, ms) {
            var intervalCancelled = false;
            var currentState = $state.$current.self.name;
            if (typeof task === 'function') {
                task();
                if (typeof ms === 'undefined') {
                    ms = 5000;
                }
                var interval = $interval(function () {
                    if ($state.$current.self.name === currentState) {
                        task();
                    } else {
                        if (!intervalCancelled) {
                            $interval.cancel(interval);
                            intervalCancelled = true;
                        }
                    }
                }, ms);
                self.addTask(function () {
                    if (!intervalCancelled) {
                        $interval.cancel(interval);
                        intervalCancelled = true;
                    }
                });
            }
        }

        function doAfterStateChange(task) {
            var currentState = $state.$current.self.name;
            var interval = $interval(function () {
                if ($state.$current.self.name !== currentState) {
                    task();
                    $interval.cancel(interval);
                }
            }, 1000);
        }
    }]);