(function () {
    'use strict';

    var serviceId = 'userService';
    angular.module('user').factory(serviceId, ['userDataContext', dataContext]);

    function dataContext(userDataContext) {

        var sasToken;
        var service = {};

        /**
         * Get the profile for the current user then
         * run the callback
         */
        service.profile = function (callback) {

            return userDataContext.getProfile().then(callback);
        }

        /**
         * Get all deployed framework assignments for the user
         * then run the callback
         */
        service.getFrameworks = function (callback) {

            return userDataContext.getAllMyFrameworkAssignmentDeployments().then(callback);
        }

        /**
         * Get the users upload bucket token, refreshing the token if the
         * stored token has expired
         */
        service.getUploadBucketSas = function () {

            if (sasToken) {

                var expiry = moment(sasToken.expiryTime).subtract('seconds', '30');
                if (expiry.isAfter(moment())) {

                    return Promise.resolve(sasToken);
                }
            }

            return userDataContext.getUploadBucketSas().then(function (token) {
                sasToken = token;
                return token;
            })
        }

        return service;
    }
})();