"""
Validation test for Docker MCP implementation
"""

import json
import os
import subprocess
import sys
import tempfile
from pathlib import Path
from unittest.mock import patch

import pytest

# Add project root to path
sys.path.insert(0, str(Path(__file__).parent.parent))


class TestDockerMCPValidation:
    """Validation tests for Docker MCP"""

    @pytest.fixture(autouse=True)
    def setup(self):
        """Automatic setup for each test"""
        self.project_root = Path(__file__).parent.parent
        self.dockerfile_path = self.project_root / "Dockerfile"

    def test_dockerfile_exists_and_valid(self):
        """Test Dockerfile existence and validity"""
        assert self.dockerfile_path.exists(), "Missing Dockerfile"

        content = self.dockerfile_path.read_text()
        assert "FROM python:" in content, "Python base required"
        assert "server.py" in content, "server.py must be copied"

    @patch("subprocess.run")
    def test_docker_command_validation(self, mock_run):
        """Test Docker command validation"""
        mock_run.return_value.returncode = 0

        # Standard Docker MCP command
        cmd = ["docker", "run", "--rm", "-i", "--env-file", ".env", "pal-mcp-server:latest", "python", "server.py"]

        subprocess.run(cmd, capture_output=True)
        mock_run.assert_called_once_with(cmd, capture_output=True)

    def test_environment_variables_validation(self):
        """Test environment variables validation"""
        required_vars = ["GEMINI_API_KEY", "OPENAI_API_KEY", "XAI_API_KEY"]

        # Test with variable present
        with patch.dict(os.environ, {"GEMINI_API_KEY": "test"}):
            has_key = any(os.getenv(var) for var in required_vars)
            assert has_key, "At least one API key required"

        # Test without variables
        with patch.dict(os.environ, {}, clear=True):
            has_key = any(os.getenv(var) for var in required_vars)
            assert not has_key, "No key should be present"

    def test_docker_security_configuration(self):
        """Test Docker security configuration"""
        if not self.dockerfile_path.exists():
            pytest.skip("Dockerfile not found")

        content = self.dockerfile_path.read_text()

        # Check non-root user
        has_user_config = "USER " in content or "useradd" in content or "adduser" in content

        # Note: The test can be adjusted according to implementation
        if has_user_config:
            assert True, "User configuration found"
        else:
            # Warning instead of failure for flexibility
            pytest.warns(UserWarning, "Consider adding a non-root user")


class TestDockerIntegration:
    """Docker-MCP integration tests"""

    @pytest.fixture
    def temp_env_file(self):
        """Fixture for temporary .env file"""
        content = """GEMINI_API_KEY=test_key
LOG_LEVEL=INFO
DEFAULT_MODEL=auto
"""
        with tempfile.NamedTemporaryFile(mode="w", suffix=".env", delete=False, encoding="utf-8") as f:
            f.write(content)
            temp_file_path = f.name

        # File is now closed, can yield
        yield temp_file_path
        os.unlink(temp_file_path)

    def test_env_file_parsing(self, temp_env_file):
        """Test .env file parsing"""
        env_vars = {}

        with open(temp_env_file, encoding="utf-8") as f:
            for line in f:
                line = line.strip()
                if line and not line.startswith("#") and "=" in line:
                    key, value = line.split("=", 1)
                    env_vars[key] = value

        assert "GEMINI_API_KEY" in env_vars
        assert env_vars["GEMINI_API_KEY"] == "test_key"
        assert env_vars["LOG_LEVEL"] == "INFO"

    def test_mcp_message_structure(self):
        """Test MCP message structure"""
        message = {"jsonrpc": "2.0", "method": "initialize", "params": {}, "id": 1}

        # Check JSON serialization
        json_str = json.dumps(message)
        parsed = json.loads(json_str)

        assert parsed["jsonrpc"] == "2.0"
        assert "method" in parsed
        assert "id" in parsed


class TestDockerPerformance:
    """Docker performance tests"""

    def test_image_size_expectation(self):
        """Test expected image size"""
        # Maximum expected size (in MB)
        max_size_mb = 500

        # Simulation - in reality, Docker would be queried
        simulated_size = 294  # MB observed

        assert simulated_size <= max_size_mb, f"Image too large: {simulated_size}MB > {max_size_mb}MB"

    def test_startup_performance(self):
        """Test startup performance"""
        max_startup_seconds = 10
        simulated_startup = 3  # seconds

        assert simulated_startup <= max_startup_seconds, f"Startup too slow: {simulated_startup}s"


@pytest.mark.integration
class TestFullIntegration:
    """Full integration tests"""

    def test_complete_setup_simulation(self):
        """Simulate complete setup"""
        # Simulate all required components
        components = {
            "dockerfile": True,
            "mcp_config": True,
            "env_template": True,
            "documentation": True,
        }

        # Check that all components are present
        missing = [k for k, v in components.items() if not v]
        assert not missing, f"Missing components: {missing}"

    def test_docker_mcp_workflow(self):
        """Test complete Docker-MCP workflow"""
        # Workflow steps
        workflow_steps = [
            "build_image",
            "create_env_file",
            "configure_mcp_json",
            "test_docker_run",
            "validate_mcp_communication",
        ]

        # Simulate each step
        for step in workflow_steps:
            # In reality, each step would be tested individually
            assert step is not None, f"Step {step} not defined"


if __name__ == "__main__":
    # Run tests with pytest
    pytest.main([__file__, "-v"])
