angular.module('fbMocks')
    .factory('queueService', [function (

        ): fb.IMockQueueService {
        'use strict';

        var queues = {};
        var getQueue = function (queueId: string): fb.IQueue {
            if (queues[queueId] !== undefined) {
                return queues[queueId];
            } else {
                var queue: fb.IQueue = new Queue(queueId);
                queues[queueId] = queue;
                return queue;
            }
        }

        function Queue(queueName: string): void {
            var queue = [];
            var isProcessing = false;
            /* Enqueuear något på kön */
            this.enqueue = function (item) {
                var res = _.findWhere(queue, { UniqueId: item.UniqueId });
                if (typeof res === 'undefined') {
                    queue.push(item);
                }
            }
            this.id = queueName;
            /* Dequeuear ett element på kön */
            this.dequeue = function () {
                if (queue.length === 0) {
                    return undefined;
                }
                var item = queue[0];
                queue.splice(0, 1);
                return item;
            }
            this.remove = function (id) {
                for (var i = 0; i < queue.length; i++) {
                    if (queue[i].UniqueId === id) {
                        queue.splice(i, 1);
                        return;
                    }
                }
            }
            this.exists = function(id) {
                var res = _.findWhere(queue, { UniqueId: id });
                return (typeof res !== 'undefined');
            }

            this.get = function (id) {
                var res = _.findWhere(queue, { UniqueId: id });
                return (typeof res !== 'undefined') ? res : null;
            }

            this.queue = queue;
        }


        return {
            get: getQueue
        };
    }]);