"""Tests for configuration module."""

from pathlib import Path

import pytest

from veritext.core.config import VeritextSettings, get_settings


class TestVeritextSettings:
    """Tests for VeritextSettings."""

    def test_default_log_level(self) -> None:
        """Test default log level is INFO."""
        settings = VeritextSettings()
        assert settings.log_level == "INFO"

    def test_default_log_format(self) -> None:
        """Test default log format is console."""
        settings = VeritextSettings()
        assert settings.log_format == "console"

    def test_default_benchmark_path(self) -> None:
        """Test default benchmark storage path."""
        settings = VeritextSettings()
        assert settings.benchmark_storage_path == Path("benchmarks")

    def test_default_tokeniser_lowercase(self) -> None:
        """Test default tokeniser lowercase setting."""
        settings = VeritextSettings()
        assert settings.tokeniser_lowercase is True

    def test_default_tokeniser_remove_punctuation(self) -> None:
        """Test default tokeniser remove punctuation setting."""
        settings = VeritextSettings()
        assert settings.tokeniser_remove_punctuation is True

    def test_default_semantic_model(self) -> None:
        """Test default semantic model name."""
        settings = VeritextSettings()
        assert settings.semantic_model == "all-MiniLM-L6-v2"

    def test_default_semantic_cache_enabled(self) -> None:
        """Test semantic cache is enabled by default."""
        settings = VeritextSettings()
        assert settings.semantic_cache_embeddings is True

    def test_env_var_override(self, monkeypatch: pytest.MonkeyPatch) -> None:
        """Test environment variable overrides default settings."""
        monkeypatch.setenv("VERITEXT_LOG_LEVEL", "DEBUG")
        settings = VeritextSettings()
        assert settings.log_level == "DEBUG"

    def test_env_var_override_log_format(self, monkeypatch: pytest.MonkeyPatch) -> None:
        """Test environment variable overrides log format."""
        monkeypatch.setenv("VERITEXT_LOG_FORMAT", "json")
        settings = VeritextSettings()
        assert settings.log_format == "json"


class TestGetSettings:
    """Tests for get_settings function."""

    def test_get_settings_returns_instance(self) -> None:
        """Test get_settings returns a VeritextSettings instance."""
        settings = get_settings()
        assert isinstance(settings, VeritextSettings)

    def test_get_settings_returns_valid_defaults(self) -> None:
        """Test get_settings returns instance with valid defaults."""
        settings = get_settings()
        assert settings.log_level in ("DEBUG", "INFO", "WARNING", "ERROR")
        assert settings.log_format in ("console", "json")