'use strict';

var RedisPool = require('redis-mpool');
var _ = require('underscore');
var JobRunner = require('./job_runner');
var QueryRunner = require('./query_runner');
var JobCanceller = require('./job_canceller');
var JobQueuePool = require('./job_queue_pool');
var JobSubscriber = require('./job_subscriber');
var QueueSeeker = require('./queue_seeker');
var UserDatabaseMetadataService = require('./user_database_metadata_service');
var JobPublisher = require('./job_publisher');
var JobQueue = require('./job_queue');
var JobBackend = require('./job_backend');
var JobService = require('./job_service');
var BatchLogger = require('./batch-logger');
var Batch = require('./batch');

module.exports = function batchFactory (metadataBackend, redisConfig, statsdClient, loggerPath) {
    var redisPoolSubscriber = new RedisPool(_.extend(redisConfig, { name: 'batch-subscriber'}));
    var redisPoolPublisher = new RedisPool(_.extend(redisConfig, { name: 'batch-publisher'}));
    var queueSeeker = new QueueSeeker(metadataBackend);
    var jobSubscriber = new JobSubscriber(redisPoolSubscriber, queueSeeker);
    var jobPublisher = new JobPublisher(redisPoolPublisher);
    var jobQueuePool = new JobQueuePool(metadataBackend, jobPublisher);
    var jobQueue =  new JobQueue(metadataBackend, jobPublisher);
    var jobBackend = new JobBackend(metadataBackend, jobQueue);
    var userDatabaseMetadataService = new UserDatabaseMetadataService(metadataBackend);
    var queryRunner = new QueryRunner(userDatabaseMetadataService);
    var jobCanceller = new JobCanceller(userDatabaseMetadataService);
    var jobService = new JobService(jobBackend, jobCanceller);
    var jobRunner = new JobRunner(jobService, jobQueue, queryRunner, statsdClient);
    var logger = new BatchLogger(loggerPath);

    return new Batch(jobSubscriber, jobQueuePool, jobRunner, jobService, logger);
};