"""
Integration test for directory conflict handling.

This test validates that the tool properly handles cases where the destination
directory already exists and provides appropriate error handling.
"""

import pytest
import tempfile
import os
import shutil


def test_existing_directory_conflict():
    """Test handling when destination directory already exists."""
    with tempfile.TemporaryDirectory() as temp_dir:
        # Create a directory that conflicts with our target
        existing_dir = os.path.join(temp_dir, "test_conflict")
        os.makedirs(existing_dir)

        # Add a file to the existing directory
        test_file = os.path.join(existing_dir, "existing_file.txt")
        with open(test_file, "w") as f:
            f.write("This file already exists")

        params = {
            "project_name": "test_conflict",
            "template_type": "saas",
            "destination_path": existing_dir
        }

        # This test will fail until the tool is implemented
        # TODO: Call the actual MCP tool and expect failure
        # result = call_loco_create_project(params)

        # Expected behavior:
        # assert not result["success"]
        # assert "already exists" in result["error_message"].lower()

        # Verify existing directory is unchanged
        # assert os.path.exists(test_file)
        # with open(test_file, "r") as f:
        #     content = f.read()
        #     assert content == "This file already exists"

        # For now, expect failure since tool doesn't exist
        pytest.fail("loco_create_project tool not implemented yet - should handle directory conflicts")


def test_existing_file_conflict():
    """Test handling when destination path is an existing file."""
    with tempfile.TemporaryDirectory() as temp_dir:
        # Create a file where we want to create a directory
        existing_file = os.path.join(temp_dir, "test_conflict")
        with open(existing_file, "w") as f:
            f.write("This is a file, not a directory")

        params = {
            "project_name": "test_conflict",
            "template_type": "saas",
            "destination_path": existing_file
        }

        # This test will fail until the tool is implemented
        # TODO: Call the actual MCP tool and expect failure
        # result = call_loco_create_project(params)

        # Expected behavior:
        # assert not result["success"]
        # assert "file" in result["error_message"].lower() or "exists" in result["error_message"].lower()

        pytest.fail("loco_create_project tool not implemented yet - should handle file conflicts")


def test_non_writable_directory():
    """Test handling when destination directory is not writable."""
    # This test is platform-dependent and may be tricky to implement
    # For now, we'll structure it but expect it to be refined during implementation

    with tempfile.TemporaryDirectory() as temp_dir:
        # Create a directory with restricted permissions (if possible)
        restricted_dir = os.path.join(temp_dir, "restricted")
        os.makedirs(restricted_dir)

        try:
            # Try to make directory read-only (may not work on all systems)
            os.chmod(restricted_dir, 0o444)
        except OSError:
            # If we can't change permissions, skip this test
            pytest.skip("Cannot change directory permissions on this system")

        params = {
            "project_name": "test_app",
            "template_type": "saas",
            "destination_path": restricted_dir
        }

        # This test will fail until the tool is implemented
        # TODO: Call the actual MCP tool and expect failure
        # result = call_loco_create_project(params)

        # Expected behavior:
        # assert not result["success"]
        # assert "permission" in result["error_message"].lower() or "write" in result["error_message"].lower()

        # Cleanup: restore permissions so temp directory can be removed
        os.chmod(restricted_dir, 0o755)

        pytest.fail("loco_create_project tool not implemented yet - should handle permission errors")


def test_nested_directory_creation():
    """Test that tool creates parent directories if needed."""
    with tempfile.TemporaryDirectory() as temp_dir:
        # Use a nested path that doesn't exist
        nested_path = os.path.join(temp_dir, "level1", "level2", "test_project")

        params = {
            "project_name": "test_project",
            "template_type": "lightweight",
            "destination_path": nested_path
        }

        # This test will fail until the tool is implemented
        # TODO: Call the actual MCP tool
        # result = call_loco_create_project(params)

        # Expected behavior:
        # assert result["success"]
        # assert os.path.exists(nested_path)
        # assert os.path.exists(os.path.join(nested_path, "Cargo.toml"))

        pytest.fail("loco_create_project tool not implemented yet - should create parent directories")


def test_partial_failure_cleanup():
    """Test that partial failures are properly cleaned up."""
    with tempfile.TemporaryDirectory() as temp_dir:
        project_path = os.path.join(temp_dir, "test_cleanup")

        params = {
            "project_name": "test_cleanup",
            "template_type": "saas",
            "destination_path": project_path
        }

        # This test will be used when we can simulate partial failures
        # TODO: Test that if creation fails partway through, cleanup occurs

        # For now, expect failure since tool doesn't exist
        pytest.fail("loco_create_project tool not implemented yet - should handle partial failures")


if __name__ == "__main__":
    test_existing_directory_conflict()
    test_existing_file_conflict()
    test_non_writable_directory()
    test_nested_directory_creation()
    test_partial_failure_cleanup()