# Licensed under an MIT style license -- see LICENSE.md

from pesummary.gw.file.calibration import CalibrationDict, Calibration
import numpy as np
import os
import shutil
import tempfile

tmpdir = tempfile.TemporaryDirectory(prefix=".", dir=".").name

__author__ = ["Charlie Hoy <charlie.hoy@ligo.org>"]


class TestCalibrationDict(object):
    """Test that the CalibrationDict works as expected
    """
    def setup(self):
        """Setup the testing class
        """
        self.calibration_data = {
            "H1": [[0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6],
                   [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6]],
            "L1": [[0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6],
                   [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6]],
        }
        
    def test_initiate(self):
        """Test that the PSDDict class can be initalized correctly
        """
        cal_dict = CalibrationDict(
            self.calibration_data.keys(), self.calibration_data.values()
        )
        assert sorted(list(cal_dict.detectors)) == ["H1", "L1"]
        assert isinstance(cal_dict["H1"], Calibration)
        np.testing.assert_almost_equal(
            cal_dict["H1"].frequencies, [0, 0.0]
        )
        np.testing.assert_almost_equal(
            cal_dict["L1"].phase_upper, [0.6, 0.6]
        )

        cal_dict = CalibrationDict(self.calibration_data)
        assert sorted(list(cal_dict.detectors)) == ["H1", "L1"]
        assert isinstance(cal_dict["H1"], Calibration)
        np.testing.assert_almost_equal(
            cal_dict["H1"].frequencies, [0, 0.0]
        )
        np.testing.assert_almost_equal(
            cal_dict["L1"].phase_upper, [0.6, 0.6]
        )


class TestCalibration(object):
    """Test the Calibration class
    """
    def setup(self):
        """Setup the testing class
        """
        self.obj = Calibration([[1, 2, 3, 4, 5, 6, 7], [1, 2, 3, 4, 5, 6, 7]])
        if not os.path.isdir(tmpdir):
            os.mkdir(tmpdir)

    def teardown(self):
        """Remove all files and directories created from this class
        """
        if os.path.isdir(tmpdir):
            shutil.rmtree(tmpdir)

    def test_save_to_file(self):
        """Test the save to file method
        """
        self.obj.save_to_file("{}/test.dat".format(tmpdir))
        data = np.genfromtxt("{}/test.dat".format(tmpdir))
        np.testing.assert_almost_equal(data.T[0], [1, 1])
        np.testing.assert_almost_equal(data.T[1], [2, 2])

    def test_invalid_input(self):
        """Test that the appropiate error is raised if the input is wrong
        """
        import pytest

        with pytest.raises(IndexError):
            obj = Calibration([10, 10])
