import os
import yaml
from unittest.mock import patch
from tempfile import mkdtemp
from shutil import rmtree
import unittest

from beets import ui
from beets import config

from test.helper import TestHelper
from beets.library import Library


class ConfigCommandTest(unittest.TestCase, TestHelper):

    def setUp(self):
        self.lib = Library(':memory:')
        self.temp_dir = mkdtemp()
        if 'EDITOR' in os.environ:
            del os.environ['EDITOR']

        os.environ['BEETSDIR'] = self.temp_dir
        self.config_path = os.path.join(self.temp_dir, 'config.yaml')
        with open(self.config_path, 'w') as file:
            file.write('library: lib\n')
            file.write('option: value\n')
            file.write('password: password_value')

        self.cli_config_path = os.path.join(self.temp_dir, 'cli_config.yaml')
        with open(self.cli_config_path, 'w') as file:
            file.write('option: cli overwrite')

        config.clear()
        config['password'].redact = True
        config._materialized = False

    def tearDown(self):
        rmtree(self.temp_dir)

    def _run_with_yaml_output(self, *args):
        output = self.run_with_output(*args)
        return yaml.safe_load(output)

    def test_show_user_config(self):
        output = self._run_with_yaml_output('config', '-c')

        self.assertEqual(output['option'], 'value')
        self.assertEqual(output['password'], 'password_value')

    def test_show_user_config_with_defaults(self):
        output = self._run_with_yaml_output('config', '-dc')

        self.assertEqual(output['option'], 'value')
        self.assertEqual(output['password'], 'password_value')
        self.assertEqual(output['library'], 'lib')
        self.assertEqual(output['import']['timid'], False)

    def test_show_user_config_with_cli(self):
        output = self._run_with_yaml_output('--config', self.cli_config_path,
                                            'config')

        self.assertEqual(output['library'], 'lib')
        self.assertEqual(output['option'], 'cli overwrite')

    def test_show_redacted_user_config(self):
        output = self._run_with_yaml_output('config')

        self.assertEqual(output['option'], 'value')
        self.assertEqual(output['password'], 'REDACTED')

    def test_show_redacted_user_config_with_defaults(self):
        output = self._run_with_yaml_output('config', '-d')

        self.assertEqual(output['option'], 'value')
        self.assertEqual(output['password'], 'REDACTED')
        self.assertEqual(output['import']['timid'], False)

    def test_config_paths(self):
        output = self.run_with_output('config', '-p')

        paths = output.split('\n')
        self.assertEqual(len(paths), 2)
        self.assertEqual(paths[0], self.config_path)

    def test_config_paths_with_cli(self):
        output = self.run_with_output('--config', self.cli_config_path,
                                      'config', '-p')
        paths = output.split('\n')
        self.assertEqual(len(paths), 3)
        self.assertEqual(paths[0], self.cli_config_path)

    def test_edit_config_with_editor_env(self):
        os.environ['EDITOR'] = 'myeditor'
        with patch('os.execlp') as execlp:
            self.run_command('config', '-e')
        execlp.assert_called_once_with(
            'myeditor', 'myeditor', self.config_path)

    def test_edit_config_with_automatic_open(self):
        with patch('beets.util.open_anything') as open:
            open.return_value = 'please_open'
            with patch('os.execlp') as execlp:
                self.run_command('config', '-e')
        execlp.assert_called_once_with(
            'please_open', 'please_open', self.config_path)

    def test_config_editor_not_found(self):
        with self.assertRaises(ui.UserError) as user_error:
            with patch('os.execlp') as execlp:
                execlp.side_effect = OSError('here is problem')
                self.run_command('config', '-e')
        self.assertIn('Could not edit configuration',
                      str(user_error.exception))
        self.assertIn('here is problem', str(user_error.exception))

    def test_edit_invalid_config_file(self):
        with open(self.config_path, 'w') as file:
            file.write('invalid: [')
        config.clear()
        config._materialized = False

        os.environ['EDITOR'] = 'myeditor'
        with patch('os.execlp') as execlp:
            self.run_command('config', '-e')
        execlp.assert_called_once_with(
            'myeditor', 'myeditor', self.config_path)


def suite():
    return unittest.TestLoader().loadTestsFromName(__name__)

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