#!/usr/bin/env python

import unittest
import math
import os

from argaze.AreaOfInterest import AOIFeatures, AOI3DScene, AOI2DScene
from argaze import GazeFeatures

import numpy

class TestAOI3DSceneClass(unittest.TestCase):
    """Test AOI3DScene class."""

    def test_new(self):
        """Test AOI3DScene creation."""

        # Check empty AOI3DScene creation
        aoi_3d_scene = AOI3DScene.AOI3DScene()

        self.assertEqual(aoi_3d_scene.dimension, 3)
        self.assertEqual(len(aoi_3d_scene.items()), 0)
        
        # Check AOI3DScene creation
        aoi_3D_A = AOIFeatures.AreaOfInterest([[0, 0, 0], [0, 1, 0], [1, 1, 0], [1, 0, 0]])
        aoi_3D_B = AOIFeatures.AreaOfInterest([[1, 1, 0], [1, 2, 0], [2, 2, 0], [2, 1, 0]])
        aoi_3d_scene = AOI3DScene.AOI3DScene({"A": aoi_3D_A, "B": aoi_3D_B})

        self.assertEqual(aoi_3d_scene.dimension, 3)

    def test_from_obj(self):
        """Test AOI3DScene from_obj method."""

        current_directory = os.path.dirname(os.path.abspath(__file__))
        aoi_3d_scene_tt = AOI3DScene.AOI3DScene.from_obj(os.path.join(current_directory, 'utils/scene.obj'))

        self.assertEqual(len(aoi_3d_scene_tt.items()), 2)

    def test_project(self):
        """Test AOI3DScene project method."""

        aoi_3D_A = AOIFeatures.AreaOfInterest([[0, 0, 0], [0, 1, 0], [1, 1, 0], [1, 0, 0]])
        aoi_3D_B = AOIFeatures.AreaOfInterest([[1, 1, 0], [1, 2, 0], [2, 2, 0], [2, 1, 0]])
        aoi_3d_scene = AOI3DScene.AOI3DScene({"A": aoi_3D_A, "B": aoi_3D_B})

        # Check default projection
        aoi_2d_scene = aoi_3d_scene.project()

        self.assertIsNone(numpy.testing.assert_array_equal(aoi_2d_scene['A'], [[0.0, 0.0], [0.0, 1.0], [1.0, 1.0], [1.0, 0.0]]))
        self.assertIsNone(numpy.testing.assert_array_equal(aoi_2d_scene['B'], [[1.0, 1.0], [1.0, 2.0], [2.0, 2.0], [2.0, 1.0]]))

        # Check projection with translation
        aoi_2d_scene = aoi_3d_scene.project(T = numpy.array([1., 0., 0.]))

        self.assertIsNone(numpy.testing.assert_array_equal(aoi_2d_scene['A'], [[1.0, 0.0], [1.0, 1.0], [2.0, 1.0], [2.0, 0.0]]))
        self.assertIsNone(numpy.testing.assert_array_equal(aoi_2d_scene['B'], [[2.0, 1.0], [2.0, 2.0], [3.0, 2.0], [3.0, 1.0]]))

    def test_transform(self):
        """Test AOI3DScene transform method."""

        aoi_3D_A = AOIFeatures.AreaOfInterest([[0, 0, 0], [0, 1, 0], [1, 1, 0], [1, 0, 0]])
        aoi_3D_B = AOIFeatures.AreaOfInterest([[1, 1, 0], [1, 2, 0], [2, 2, 0], [2, 1, 0]])
        aoi_3d_scene = AOI3DScene.AOI3DScene({"A": aoi_3D_A, "B": aoi_3D_B})

        # Check translation transformation
        aoi_3d_scene = aoi_3d_scene.transform(T = numpy.array([1., 0., 0.]))

        self.assertIsNone(numpy.testing.assert_array_equal(aoi_3d_scene['A'], [[1.0, 0.0, 0.0], [1.0, 1.0, 0.0], [2.0, 1.0, 0.0], [2.0, 0.0, 0.0]]))
        self.assertIsNone(numpy.testing.assert_array_equal(aoi_3d_scene['B'], [[2.0, 1.0, 0.0], [2.0, 2.0, 0.0], [3.0, 2.0, 0.0], [3.0, 1.0, 0.0]]))


    def test_copy(self):
        """Test AOI2DScene copy method."""

        aoi_3D_A = AOIFeatures.AreaOfInterest([[0, 0, 0], [0, 1, 0], [1, 1, 0], [1, 0, 0]])
        aoi_3D_B = AOIFeatures.AreaOfInterest([[1, 1, 0], [1, 2, 0], [2, 2, 0], [2, 1, 0]])
        aoi_3d_scene = AOI3DScene.AOI3DScene({"A": aoi_3D_A, "B": aoi_3D_B})

        # Check full copy
        aoi_3d_scene_copy = aoi_3d_scene.copy()

        self.assertEqual(aoi_3d_scene_copy.dimension, 3)
        self.assertEqual(len(aoi_3d_scene_copy.items()), 2)
        self.assertEqual(list(aoi_3d_scene_copy.keys()), ["A", "B"])

        # Check cpy with exclusion
        aoi_3d_scene_copy = aoi_3d_scene.copy(exclude=["B"])

        self.assertEqual(aoi_3d_scene_copy.dimension, 3)
        self.assertEqual(len(aoi_3d_scene_copy.items()), 1)
        self.assertEqual(list(aoi_3d_scene_copy.keys()), ["A"])

class TestTimeStampedAOIScenesClass(unittest.TestCase):
    """Test TimeStampedAOIScenes class."""

    def test___setitem__(self):
        """Test TimeStampedAOIScenes creation."""

        aoi_3D_A = AOIFeatures.AreaOfInterest([[0, 0, 0], [0, 1, 0], [1, 1, 0], [1, 0, 0]])
        aoi_3D_B = AOIFeatures.AreaOfInterest([[1, 1, 0], [1, 2, 0], [2, 2, 0], [2, 1, 0]])
        aoi_3d_scene = AOI3DScene.AOI3DScene({"A": aoi_3D_A, "B": aoi_3D_B})

        ts_aois_scenes = AOIFeatures.TimeStampedAOIScenes()

        ts_aois_scenes[0] = aoi_3d_scene

        # Check that only AOIScene can be added
        with self.assertRaises(AssertionError): 

            ts_aois_scenes[1] = "This string is not an AOI3DScene"

if __name__ == '__main__':

    unittest.main()