#!bin/python

from __future__ import division
from run_local import log
import json
from twisted.internet import reactor
from light9.greplin_cyclone import StatsForCyclone
from light9.rdfdb.syncedgraph import SyncedGraph
from light9 import networking, showconfig
from greplin import scales
import optparse, sys, logging
import cyclone.web
from rdflib import URIRef
from light9.rdfdb import clientsession
import light9.paint.solve
from lib.cycloneerr import PrettyErrorHandler


class Solve(PrettyErrorHandler, cyclone.web.RequestHandler):
    def post(self):
        painting = json.loads(self.request.body)
        reload(light9.paint.solve)
        solver = light9.paint.solve.Solver(self.settings.graph)
        solver.loadSamples()
        with self.settings.stats.solve.time():
            out = solver.solve(painting)
            layers = solver.simulationLayers(out)
        self.write(json.dumps({'layers': layers, 'out': out}))

class App(object):
    def __init__(self, show, session):
        self.show = show
        self.session = session

        self.graph = SyncedGraph(networking.rdfdb.url, "paintServer")
        self.graph.initiallySynced.addCallback(self.launch)

        self.stats = scales.collection('/',
                                       scales.PmfStat('solve'),
                                       )
    def launch(self, *args):
        self.cycloneApp = cyclone.web.Application(handlers=[
            (r'/stats', StatsForCyclone),
            (r'/solve', Solve),
        ],
                                                  debug=True,
                                                  graph=self.graph,
                                                  stats=self.stats)
        reactor.listenTCP(networking.paintServer.port, self.cycloneApp)
        log.info("listening on %s" % networking.paintServer.port)


if __name__ == "__main__":
    parser = optparse.OptionParser()
    parser.add_option('--show',
        help='show URI, like http://light9.bigasterisk.com/show/dance2008',
                      default=showconfig.showUri())
    parser.add_option("-v", "--verbose", action="store_true",
                      help="logging.DEBUG")
    parser.add_option("--twistedlog", action="store_true",
                      help="twisted logging")
    clientsession.add_option(parser)
    (options, args) = parser.parse_args()
    log.setLevel(logging.DEBUG if options.verbose else logging.INFO)

    if not options.show:
        raise ValueError("missing --show http://...")
        
    session = clientsession.getUri('paint', options)

    app = App(URIRef(options.show), session)
    if options.twistedlog:
        from twisted.python import log as twlog
        twlog.startLogging(sys.stderr)
    reactor.run()