#!/usr/bin/env python

import sys
import os
from optparse import OptionParser


from interp.grid.gmsh import ggrid
from interp.tools import baker_exact_3D as exact, exact_me
from interp.cluster import QueueManager, get_qs

if __name__ == '__main__':
    parser = OptionParser(usage="usage: %s [options] <server> <gmsh file>")

    parser.add_option("-v", "--verbose",
        action="store_true", dest="verbose", default=False,
        help="verbose flag (default: %default)")

    parser.add_option('-p', '--port',
        type="int", dest="port", default=6666,
        help="specify the port to use on the server (default: %default)")

    (options, args) = parser.parse_args()

    if len(args) != 2:
        parser.print_usage()
        sys.exit(1)

    server, input_file = args

    myname = "%s-%d" % (os.uname()[1], os.getpid())
    if options.verbose:
        print "%s: started" % myname

    m = QueueManager(address=(server, options.port), authkey='asdf')
    m.connect()

    tasksq, resultsq, masterq, minionsq = get_qs(m)

    if options.verbose:
        print "%s: starting parse input file" % myname
    g = ggrid(input_file)
    g.values = exact_me(g.points, exact)
    if options.verbose:
        print "%s: done parsing input file" % myname

    while True:
        if options.verbose:
            print "%s: letting master know that I am ready" % myname
        masterq.put(myname)

        if options.verbose:
            print "%s: waiting for master to tell me to start" % myname
        action = minionsq.get()
        if options.verbose:
            print "%s: master said go!!" % myname

        if action in ('teardown', 'slay'):
            break

        while not tasksq.empty():
            i, o, e, X = tasksq.get()
            try:
                a = g.interpolate(X, order=o, extra_points=e)
                resultsq.put((i, myname, a.qlin, a.error, a.final, exact(X)))
            except Exception as e:
                print X, e
                resultsq.put((i, myname, 0.0, 0.0, 0.0, 0.0))

    if options.verbose:
        print "%s: exiting" % myname