#!/usr/bin/env python

import sys

import numpy as np

from optparse import OptionParser

import interp.bootstrap
from   interp.grid.gmsh import gmsh_grid3D, gmsh_grid
from   interp.tools     import *


def get_right_exact_func(options):
  f = None
  if options.dimension == 3:
    if options.baker:
      f = baker_exact_3D
    else:
      f =friendly_exact_3D
  elif options.dimension == 2:
    if options.baker:
      f = baker_exact_2D
    else:
      f = friendly_exact_2D
  return f



if __name__ == '__main__':
  parser = OptionParser(usage = "%prog [options] <input file> <number of attempts>")

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

  parser.add_option("-b", "--baker",
    action="store_true", dest="baker", default=False,
    help="use more impressive baker funcs")

  parser.add_option("-d", "--dimension",
    type="int", dest="dimension", default=3,
    help="use 3D or 2D gmsh lib (default: %default)")
  parser.add_option("-o", "--order",
    type="int", dest="order", default=3,
    help="order of interpolation (default: %default)")
  parser.add_option("-e", "--extra-points",
    type="int", dest="extra", default=3,
    help="number of extra points (default: %default)")


  (options, args) = parser.parse_args()
  if len(args) != 2:
    # print >> sys.stderr, "usage: %s <input file> <number of attempts>" % sys.argv[0]
    parser.print_usage()
    sys.exit(1)

  input_file, count = args

  if options.dimension == 3:
    g = gmsh_grid3D(input_file)
  else:
    g = gmsh_grid(input_file)

  g.q = np.array([get_right_exact_func(options)(x) for x in g.verts])

  results = {True:0, False:0}
  for i in xrange(int(count)):
    X = np.random.random((1,options.dimension))[0]

    a = g.run_baker(X, order = options.order, extra_points = options.extra)
    e = get_right_exact_func(options)(X)

    results[improved_answer(a, e)] += 1

  print results