"""Tests for configuration."""

import os
import tempfile
from pathlib import Path

import pytest
import yaml

from mockapi.core.config import Config, load_config


class TestConfig:
    """Test cases for Config."""

    def test_default_values(self):
        """Test default configuration values."""
        config = Config()
        assert config.port == 8080
        assert config.host == "0.0.0.0"
        assert config.delay == 0
        assert config.random_delay is False
        assert config.seed == 42
        assert config.validate_requests is True
        assert config.validate_responses is False
        assert config.strict_validation is False

    def test_load_from_dict(self):
        """Test creating config with dict values."""
        config = Config(
            port=3000,
            host="127.0.0.1",
            delay=100,
            seed=123,
        )
        assert config.port == 3000
        assert config.host == "127.0.0.1"
        assert config.delay == 100
        assert config.seed == 123

    def test_to_dict(self):
        """Test converting config to dictionary."""
        config = Config(port=9000, host="localhost")
        d = config.to_dict()
        assert d["port"] == 9000
        assert d["host"] == "localhost"
        assert "delay" in d
        assert "seed" in d

    def test_load_from_env(self):
        """Test loading config from environment variables."""
        os.environ["MOCKAPI_PORT"] = "5000"
        os.environ["MOCKAPI_HOST"] = "127.0.0.1"
        os.environ["MOCKAPI_SEED"] = "999"

        config = load_config()

        assert config.port == 5000
        assert config.host == "127.0.0.1"
        assert config.seed == 999

        del os.environ["MOCKAPI_PORT"]
        del os.environ["MOCKAPI_HOST"]
        del os.environ["MOCKAPI_SEED"]

    def test_load_from_file(self):
        """Test loading config from YAML file."""
        config_data = {
            "port": 7000,
            "host": "0.0.0.0",
            "delay": 200,
            "random_delay": True,
            "seed": 456,
        }

        with tempfile.NamedTemporaryFile(
            mode="w", suffix=".yaml", delete=False
        ) as f:
            yaml.dump(config_data, f)
            temp_path = f.name

        try:
            config = load_config(temp_path)
            assert config.port == 7000
            assert config.host == "0.0.0.0"
            assert config.delay == 200
            assert config.random_delay is True
            assert config.seed == 456
        finally:
            os.unlink(temp_path)

    def test_env_overrides_file(self):
        """Test that environment variables override file config."""
        config_data = {"port": 7000, "host": "0.0.0.0"}

        with tempfile.NamedTemporaryFile(
            mode="w", suffix=".yaml", delete=False
        ) as f:
            yaml.dump(config_data, f)
            temp_path = f.name

        os.environ["MOCKAPI_PORT"] = "9000"

        try:
            config = load_config(temp_path)
            assert config.port == 9000
        finally:
            os.unlink(temp_path)
            del os.environ["MOCKAPI_PORT"]

    def test_load_config_default_path(self):
        """Test load_config with no arguments."""
        config = load_config()
        assert isinstance(config, Config)