"""Tests for utility functions and configurations."""

import os
import tempfile
from pathlib import Path

from create_env_example import env_content


class TestEnvironmentConfiguration:
    """Test environment configuration utilities."""

    def test_env_example_content_structure(self):
        """Test .env.example content has required sections."""
        # Check for major sections
        assert "# API Keys" in env_content
        assert "# Azure OpenAI" in env_content
        assert "# Knowledge Graph Configuration" in env_content
        assert "# Application Settings" in env_content
        assert "# Gradio Configuration" in env_content
        assert "# Security" in env_content

    def test_env_example_required_variables(self):
        """Test .env.example contains required environment variables."""
        required_vars = [
            "OPENAI_API_KEY",
            "APP_ENV",
            "APP_PORT",
            "GRADIO_SERVER_PORT",
            "LOG_LEVEL",
        ]

        for var in required_vars:
            assert var in env_content

    def test_env_example_no_real_secrets(self):
        """Test .env.example doesn't contain real secrets."""
        # Should not contain actual API keys or secrets
        assert "sk-" not in env_content  # OpenAI API key prefix
        assert "your_" in env_content  # Contains placeholder prefixes
        assert "localhost" in env_content  # Uses local defaults

    def test_env_example_creates_file(self):
        """Test create_env_example.py creates the file correctly."""
        with tempfile.TemporaryDirectory() as temp_dir:
            # Change to temp directory
            original_cwd = Path.cwd()
            try:
                os.chdir(temp_dir)

                # Execute the script functionality
                with Path(".env.example").open("w") as f:
                    f.write(env_content)

                # Verify file was created
                env_file = Path(".env.example")
                assert env_file.exists()

                # Verify content
                content = env_file.read_text()
                assert "OPENAI_API_KEY" in content
                assert "APP_ENV" in content

            finally:
                os.chdir(original_cwd)


class TestProjectStructure:
    """Test project structure and configuration."""

    def test_required_directories_exist(self):
        """Test required project directories exist."""
        required_dirs = ["agents", "kg_services", "tests", "data", "docs", "scripts"]

        for dir_name in required_dirs:
            assert Path(dir_name).exists(), f"Required directory {dir_name} not found"

    def test_required_files_exist(self):
        """Test required project files exist."""
        required_files = [
            "app.py",
            "simple_app.py",
            "pyproject.toml",
            "requirements.txt",
            "README.md",
        ]

        for file_name in required_files:
            assert Path(file_name).exists(), f"Required file {file_name} not found"

    def test_data_files_exist(self):
        """Test required data files exist."""
        data_files = ["data/initial_tools.json", "data/initial_prompts.json"]

        for file_name in data_files:
            assert Path(file_name).exists(), f"Required data file {file_name} not found"

    def test_init_files_exist(self):
        """Test __init__.py files exist in Python packages."""
        init_files = [
            "agents/__init__.py",
            "kg_services/__init__.py",
            "tests/__init__.py",
        ]

        for file_name in init_files:
            assert Path(
                file_name
            ).exists(), f"Required __init__.py file {file_name} not found"


class TestConfigurationFiles:
    """Test configuration files are properly structured."""

    def test_pyproject_toml_exists_and_valid(self):
        """Test pyproject.toml exists and has required sections."""
        pyproject_path = Path("pyproject.toml")
        assert pyproject_path.exists()

        content = pyproject_path.read_text()

        # Check for required sections
        assert "[build-system]" in content
        assert "[project]" in content
        assert 'name = "kgraph-mcp"' in content

    def test_requirements_files_exist(self):
        """Test requirements files exist."""
        req_files = ["requirements.txt", "requirements-dev.txt"]

        for file_name in req_files:
            req_path = Path(file_name)
            assert req_path.exists(), f"Requirements file {file_name} not found"

            # Should not be empty
            content = req_path.read_text().strip()
            assert len(content) > 0, f"Requirements file {file_name} is empty"

    def test_justfile_exists(self):
        """Test justfile exists for task automation."""
        justfile_path = Path("justfile")
        assert justfile_path.exists()

        content = justfile_path.read_text()

        # Check for common tasks
        assert "test" in content
        assert "lint" in content
        assert "format" in content


class TestImportStructure:
    """Test that all modules can be imported without errors."""

    def test_import_agents_module(self):
        """Test agents module can be imported."""
        import agents
        import agents.planner

        # Should not raise any import errors
        assert hasattr(agents.planner, "SimplePlannerAgent")

    def test_import_kg_services_module(self):
        """Test kg_services module can be imported."""
        import kg_services
        import kg_services.embedder
        import kg_services.knowledge_graph
        import kg_services.ontology

        # Should not raise any import errors
        assert hasattr(kg_services.knowledge_graph, "InMemoryKG")
        assert hasattr(kg_services.ontology, "MCPTool")
        assert hasattr(kg_services.embedder, "EmbeddingService")

    def test_import_main_apps(self):
        """Test main application files can be imported."""
        import app
        import simple_app

        # Should not raise any import errors
        assert hasattr(app, "app")  # FastAPI instance
        assert hasattr(simple_app, "app")  # FastAPI instance