#!/usr/bin/env python3

import sys
import numpy as np
import phoebe
from astropy import units as u

#logger = phoebe.logger(clevel='INFO')
#logger = phoebe.logger(clevel='DEBUG')

b = phoebe.default_binary()

times, wavelengths, fluxes = np.loadtxt("test_phoebe27.in", usecols=[0, 1, 2], unpack=True)

sigmas = 0.01*np.ones((len(fluxes)))

b.add_dataset('spe', times=times, wavelengths=wavelengths, fluxes=fluxes, sigmas=sigmas)

print("b['spe@spe01@spe@dataset'] = ", b['spe@spe01@spe@dataset'])
print("b['times@spe01@spe@dataset'] = ", b['times@spe01@spe@dataset'])
print("b['wavelengths@spe01@spe@dataset'] = ", b['wavelengths@spe01@spe@dataset'])
print("b['fluxes@spe01@spe@dataset'] = ", b['fluxes@spe01@spe@dataset'])

b.flip_constraint('mass@primary@constraint', solve_for='period@binary')

#print("b['constraint'] = ", b['constraint'])

b.set_value('distance', context='system', value=100*u.pc)
b.set_value('teff@primary@component', value=5800.*u.K)
b.set_value('teff@secondary@component', value=6200.*u.K)
b.set_value('ntriangles@primary', context='compute', value=2000)
b.set_value('ntriangles@secondary', context='compute', value=2000)

b.run_compute()

times = b['times@spe01@phoebe01@latest@spe@model'].value
wavelengths = b['wavelengths@spe01@phoebe01@latest@spe@model'].value
fluxes = b['fluxes@spe01@phoebe01@latest@spe@model'].value

np.savetxt('test_phoebe27.tmp', np.c_[times, wavelengths, fluxes], header='times wavelenghts fluxes')

#b.add_dataset('mesh', compute_phases=[0.25])
#b.run_compute()
#b.plot(kind='mesh', show=True)

print("b['fit_parameters'] = ", b['fit_parameters'])

b.add_solver('optimizer.nelder_mead', solver='nm_solver')

print("b['fit_parameters'] = ", b['fit_parameters'])

b.set_value('maxiter', 50)
#b.set_value('maxiter', 1)
b.set_value('fit_parameters', ['teff@primary@component', 'teff@secondary@component'])
b.get_value('fit_parameters', expand=True)

b.run_solver('nm_solver', solution='sol')

print(b.filter(solution='sol'))

b.adopt_solution('sol')
b.run_compute()

f = open('twigs.txt', 'w')
for twig in b.twigs:
  f.write("%s\n" % (twig))
f.close()

times = b['times@spe01@phoebe01@latest@spe@model'].value
wavelengths = b['wavelengths@spe01@phoebe01@latest@spe@model'].value
fluxes = b['fluxes@spe01@phoebe01@latest@spe@model'].value

np.savetxt('test_phoebe27.out', np.c_[times, wavelengths, fluxes], header='times wavelenghts fluxes')

#b.plot(show=True)
b.plot(x='wavelengths', marker='.', linestyle='none', show=True)