from twisted.application.service import Service, MultiService

from twisted.application import internet

from twisted.web import resource, server

from twisted.internet import reactor

from twisted.python import log

from sqlalchemy import create_engine, pool

import config, install

from .view import xmlrpc

from .model import setEngine, setPool

from .controller.pool import startPool, dbPool

class IroService(Service):

    def startService(self):

        log.msg("Starting service...")

        engine = create_engine(config.main.dburl,

               poolclass = pool.SingletonThreadPool,  pool_size=dbPool.maxthreads, )

        setEngine(engine)

        startPool(reactor)

        setPool(dbPool)

        reactor.callWhenRunning(config.readConfig)

        Service.startService(self)

def makeService(cfg):

    top_service = MultiService()

    config.confFiles.insert(0, cfg["config"])

    if not install.checkConfig():

        log.err("You can create a sample configuration file by running iro-install")

        raise Exception("Please update or create your configuration file %s." % cfg["config"])

    config.init()

    if not install.checkDatabaseConnection():

        raise Exception("Can't connect to database")

    if not install.checkDatabase():

        raise Exception("Database not in right format. Please run iro-install --install")

    routes = [ s for s in config.configParser.sections() if not s in ["main",]]

    ao =  install.getAllRoutes(routes, False)

    for o in  ao["orphand"]:

        log.msg("Offer(%s) is orphand (no route using this offer)."%o)

    if ao["added"]:

        raise Exception("offerlist is not up-to-date.\nPlease run iro-install --update")

    root = resource.Resource()

    root = xmlrpc.appendResource(root)

    v2 = resource.Resource()

    v2 = xmlrpc.appendResource(root)

    root.putChild('1.0a', v2)

    internet.TCPServer(config.main.port, server.Site(root)).setServiceParent(top_service)

    IroService().setServiceParent(top_service)

    return top_service