import subprocess
import unittest
import zipfile
from pathlib import Path
from unittest.mock import MagicMock, mock_open, patch

# Import the functions from the script
from DownloadAndArchivePythonLibrary import installLibrary, main


class TestInstallLibrary(unittest.TestCase):
    @patch("DownloadAndArchivePythonLibrary.subprocess.Popen")
    @patch("DownloadAndArchivePythonLibrary.zipfile.ZipFile")
    @patch("DownloadAndArchivePythonLibrary.os.walk")
    @patch("DownloadAndArchivePythonLibrary.mkdtemp")
    @patch("DownloadAndArchivePythonLibrary.open", new_callable=mock_open, read_data=b"test data")
    @patch("DownloadAndArchivePythonLibrary.fileResult")
    def test_installLibrary(self, mock_fileResult, mock_open, mock_mkdtemp, mock_os_walk, mock_zipfile, mock_popen):
        # Prepare
        mock_dir_path = Path("/fake/dir")
        mock_mkdtemp.return_value = mock_dir_path

        mock_popen_instance = MagicMock()
        mock_popen_instance.communicate.return_value = (b"success", b"")
        mock_popen_instance.returncode = 0
        mock_popen.return_value = mock_popen_instance

        mock_zipfile_instance = MagicMock()
        mock_zipfile.return_value.__enter__.return_value = mock_zipfile_instance

        mock_os_walk.return_value = [("/fake/dir", ("subdir",), ("file1.py", "file2.py"))]

        expected_result = {
            "Type": 3,
            "File": "fake_library.zip",
            "FileID": "fake_library.zip",
            "Contents": b"test data",
            "ContentsFormat": "text",
        }
        mock_fileResult.return_value = expected_result

        # Run
        result = installLibrary(mock_dir_path, "fake_library")

        # Check
        # Ensure subprocess was called with the correct command
        mock_popen.assert_called_once_with(
            ["python3", "-m", "pip", "install", "--target", str(mock_dir_path), "fake_library"],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
        )

        # Ensure zipfile was created with the correct path and mode
        mock_zipfile.assert_called_once_with(
            mock_dir_path / "fake_library.zip", "w", compression=zipfile.ZIP_DEFLATED, compresslevel=9
        )

        # Ensure files were added to the zip archive
        expected_arcnames = [Path("python") / "file1.py", Path("python") / "file2.py"]
        mock_zipfile_instance.write.assert_any_call(Path("/fake/dir/file1.py"), arcname=expected_arcnames[0])
        mock_zipfile_instance.write.assert_any_call(Path("/fake/dir/file2.py"), arcname=expected_arcnames[1])

        # Ensure the correct result is returned
        assert result == expected_result

    @patch("DownloadAndArchivePythonLibrary.installLibrary")
    @patch("DownloadAndArchivePythonLibrary.demisto.args")
    @patch("DownloadAndArchivePythonLibrary.return_results")
    @patch("DownloadAndArchivePythonLibrary.return_error")
    @patch("DownloadAndArchivePythonLibrary.Path")
    @patch("DownloadAndArchivePythonLibrary.mkdtemp")
    def test_main_success(self, mock_mkdtemp, mock_path, mock_return_error, mock_return_results, mock_args, mock_installLibrary):
        # Prepare
        mock_args.return_value = {"library_name": "fake_library"}
        mock_dir_path = Path("/fake/dir")
        mock_mkdtemp.return_value = mock_dir_path

        expected_result = {
            "Type": 3,
            "File": "fake_library.zip",
            "FileID": "fake_library.zip",
            "Contents": b"test data",
            "ContentsFormat": "text",
        }
        mock_installLibrary.return_value = expected_result

        # Run
        main()

        # Check
        mock_return_results.assert_called_once_with(expected_result)
        mock_return_error.assert_not_called()

    @patch("DownloadAndArchivePythonLibrary.installLibrary")
    @patch("DownloadAndArchivePythonLibrary.demisto.args")
    @patch("DownloadAndArchivePythonLibrary.return_results")
    @patch("DownloadAndArchivePythonLibrary.return_error")
    @patch("DownloadAndArchivePythonLibrary.Path")
    @patch("DownloadAndArchivePythonLibrary.mkdtemp")
    def test_main_failure(self, mock_mkdtemp, mock_path, mock_return_error, mock_return_results, mock_args, mock_installLibrary):
        # Prepare
        mock_args.return_value = {"library_name": "fake_library"}
        mock_dir_path = Path("/fake/dir")
        mock_mkdtemp.return_value = mock_dir_path

        mock_installLibrary.side_effect = Exception("Test Exception")

        # Run
        main()

        # Check
        mock_return_error.assert_called_once_with("An error occurred: Test Exception")
        mock_return_results.assert_not_called()


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