import unittest
from charset_normalizer.cli import cli_detect, query_yes_no
from unittest.mock import patch
from os.path import exists
from os import remove, path, pardir

DIR_PATH = path.join(
    path.dirname(path.realpath(__file__)),
    pardir
)


class TestCommandLineInterface(unittest.TestCase):

    @patch('builtins.input', lambda *args: 'y')
    def test_simple_yes_input(self):
        self.assertTrue(
            query_yes_no('Are u willing to chill a little bit ?')
        )

    @patch('builtins.input', lambda *args: 'N')
    def test_simple_no_input(self):
        self.assertFalse(
            query_yes_no('Are u willing to chill a little bit ?')
        )

    def test_single_file(self):

        self.assertEqual(
            0,
            cli_detect(
                [DIR_PATH + '/data/sample-arabic-1.txt']
            )
        )

    def test_version_output_success(self):
        with self.assertRaises(SystemExit):
            cli_detect(
                ['--version']
            )

    def test_single_file_normalize(self):
        self.assertEqual(
            0,
            cli_detect(
                [
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    '--normalize'
                ]
            )
        )

        self.assertTrue(
            exists(DIR_PATH + '/data/sample-arabic-1.cp1256.txt')
        )

        try:
            remove(DIR_PATH + '/data/sample-arabic-1.cp1256.txt')
        except:
            pass

    def test_single_verbose_file(self):
        self.assertEqual(
            0,
            cli_detect(
                [DIR_PATH + '/data/sample-arabic-1.txt', '--verbose']
            )
        )

    def test_multiple_file(self):
        self.assertEqual(
            0,
            cli_detect(
                [
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    DIR_PATH + '/data/sample-french.txt',
                    DIR_PATH + '/data/sample-chinese.txt'
                ]
            )
        )

    def test_with_alternative(self):
        self.assertEqual(
            0,
            cli_detect(
                [
                    '-a',
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    DIR_PATH + '/data/sample-french.txt',
                    DIR_PATH + '/data/sample-chinese.txt'
                ]
            )
        )

    def test_with_minimal_output(self):
        self.assertEqual(
            0,
            cli_detect(
                [
                    '-m',
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    DIR_PATH + '/data/sample-french.txt',
                    DIR_PATH + '/data/sample-chinese.txt'
                ]
            )
        )

    def test_with_minimal_and_alt(self):
        self.assertEqual(
            0,
            cli_detect(
                [
                    '-m',
                    '-a',
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    DIR_PATH + '/data/sample-french.txt',
                    DIR_PATH + '/data/sample-chinese.txt'
                ]
            )
        )

    def test_non_existent_file(self):

        with self.assertRaises(SystemExit) as cm:
            cli_detect(
                [DIR_PATH + '/data/not_found_data.txt']
            )

        self.assertEqual(cm.exception.code, 2)

    def test_replace_without_normalize(self):

        self.assertEqual(
            cli_detect(
                [
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    '--replace'
                ]
            ),
            1
        )

    def test_force_replace_without_replace(self):
        self.assertEqual(
            cli_detect(
                [
                    DIR_PATH + '/data/sample-arabic-1.txt',
                    '--force'
                ]
            ),
            1
        )


if __name__ == '__main__':
    unittest.main()
