import sys
import unittest
from io import StringIO
from unittest.mock import patch, MagicMock
from pathlib import Path
from iottb.definitions import DEVICE_METADATA_FILE
import shutil
from iottb.__main__ import main


class TestDeviceMetadataFileCreation(unittest.TestCase):
    def setUp(self):
        self.test_dir = Path('/tmp/iottbtest/test_add_device')
        self.test_dir.mkdir(parents=True, exist_ok=True)
        # self.captured_output = StringIO()
        # sys.stdout = self.captured_output

    def tearDown(self):
        # shutil.rmtree(str(self.test_dir))
        for item in self.test_dir.iterdir():
            if item.is_dir():
                item.rmdir()
            else:
                item.unlink()
        self.test_dir.rmdir()
        # sys.stdout = sys.__stdout__

    @patch('builtins.input', side_effect=['iPhone 14', 'y', 'y'])
    def test_guided_device_setup(self, mock_input):
        sys.argv = ['__main__.py', 'add', '--root_dir', str(self.test_dir), '--guided']
        main()
        expected_file = self.test_dir / DEVICE_METADATA_FILE
        self.assertTrue(expected_file.exists()), f'Expected file not created: {expected_file}'

    @patch('builtins.input', side_effect=['y']) # need mock_input else wont work
    def test_device_setup(self, mock_input):
        sys.argv = ['__main__.py', 'add', '--root_dir', str(self.test_dir), '--name', 'iPhone 14']
        main()
        expected_file = self.test_dir / DEVICE_METADATA_FILE
        self.assertTrue(expected_file.exists()), f'Expected file not created: {expected_file}'

    def test_add_when_file_exists(self):
        # TODO
        pass

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