""" 

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
"""

__author__ = "Théo de la Hogue"
__credits__ = []
__copyright__ = "Copyright 2023, Ecole Nationale de l'Aviation Civile (ENAC)"
__license__ = "GPLv3"

import unittest

from argaze import GazeFeatures
from argaze.GazeAnalysis import NGram
from argaze.utils import UtilsFeatures

GazeFeaturesTest = UtilsFeatures.importFromTestPackage('GazeFeatures')

class TestAOIScanPathAnalyzer(unittest.TestCase):
    """Test AOIScanPathAnalyzer class."""

    def test_analyze(self):
        """Test analyze method."""

        aoi_scan_path = GazeFeaturesTest.build_aoi_scan_path(['Foo', 'Bar', 'Shu'], ['Bar', 'Shu', 'Foo', 'Bar', 'Shu', 'Foo'])

        # Check aoi scan path
        self.assertEqual(len(aoi_scan_path), 6)

        ngram_analyzer = NGram.AOIScanPathAnalyzer(n_min=2, n_max=2)
        ngram_analyzer.analyze(aoi_scan_path)

        # Check 2-gram analysis
        self.assertEqual(len(ngram_analyzer.ngrams_count), 1)
        self.assertEqual(len(ngram_analyzer.ngrams_count[2]), 3)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Bar', 'Shu')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Shu', 'Foo')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Foo', 'Bar')], 1)

        ngram_analyzer = NGram.AOIScanPathAnalyzer(n_min=3, n_max=3)
        ngram_analyzer.analyze(aoi_scan_path)

        # Check 3-gram analysis
        self.assertEqual(len(ngram_analyzer.ngrams_count), 1)
        self.assertEqual(len(ngram_analyzer.ngrams_count[3]), 3)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Bar', 'Shu', 'Foo')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Shu', 'Foo', 'Bar')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Foo', 'Bar', 'Shu')], 1)

        ngram_analyzer = NGram.AOIScanPathAnalyzer(n_min=2, n_max=4)
        ngram_analyzer.analyze(aoi_scan_path)

        # Check 4-gram analysis
        self.assertEqual(len(ngram_analyzer.ngrams_count), 3)
        self.assertEqual(len(ngram_analyzer.ngrams_count[2]), 3)
        self.assertEqual(len(ngram_analyzer.ngrams_count[3]), 3)
        self.assertEqual(len(ngram_analyzer.ngrams_count[4]), 3)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Bar', 'Shu')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Shu', 'Foo')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[2][('Foo', 'Bar')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Bar', 'Shu', 'Foo')], 2)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Shu', 'Foo', 'Bar')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[3][('Foo', 'Bar', 'Shu')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[4][('Bar', 'Shu', 'Foo', 'Bar')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[4][('Shu', 'Foo', 'Bar', 'Shu')], 1)
        self.assertEqual(ngram_analyzer.ngrams_count[4][('Foo', 'Bar', 'Shu', 'Foo')], 1)

if __name__ == '__main__':

    unittest.main()