"""
Tests for configuration management
"""

import pytest
from unittest.mock import patch
import os

from app.core.config import Settings


def test_default_settings():
    """Test default configuration values"""
    settings = Settings()
    
    assert settings.HOST == "0.0.0.0"
    assert settings.PORT == 8082
    assert settings.METUBE_URL == "http://localhost:8081"
    assert settings.DATABASE_URL.endswith("data/playlists.db")  # Account for absolute path conversion
    assert settings.DEFAULT_CHECK_INTERVAL == 60
    assert settings.MAX_CONCURRENT_DOWNLOADS == 3


def test_metube_url_validation():
    """Test MeTube URL validation and normalization"""
    settings = Settings(METUBE_URL="http://localhost:8081/")
    assert settings.METUBE_URL == "http://localhost:8081"
    
    settings = Settings(METUBE_URL="https://metube.example.com/")
    assert settings.METUBE_URL == "https://metube.example.com"


def test_check_interval_validation():
    """Test check interval validation"""
    with pytest.raises(ValueError):
        Settings(DEFAULT_CHECK_INTERVAL=0)
    
    with pytest.raises(ValueError):
        Settings(DEFAULT_CHECK_INTERVAL=1500)  # > 24 hours
    
    # Valid values should work
    settings = Settings(DEFAULT_CHECK_INTERVAL=30)
    assert settings.DEFAULT_CHECK_INTERVAL == 30


def test_max_concurrent_validation():
    """Test max concurrent downloads validation"""
    with pytest.raises(ValueError):
        Settings(MAX_CONCURRENT_DOWNLOADS=0)
    
    with pytest.raises(ValueError):
        Settings(MAX_CONCURRENT_DOWNLOADS=15)  # > 10
    
    # Valid values should work
    settings = Settings(MAX_CONCURRENT_DOWNLOADS=5)
    assert settings.MAX_CONCURRENT_DOWNLOADS == 5


def test_database_url_validation():
    """Test database URL validation"""
    settings = Settings(DATABASE_URL="sqlite:///data/playlists.db")
    assert "sqlite:///" in settings.DATABASE_URL
    
    # Test absolute path conversion for relative paths
    settings = Settings(DATABASE_URL="sqlite:///data/db.sqlite")
    assert os.path.isabs(settings.DATABASE_URL.replace("sqlite:///", ""))


def test_environment_variables():
    """Test loading from environment variables"""
    env_vars = {
        "HOST": "127.0.0.1",
        "PORT": "9000",
        "METUBE_URL": "http://metube:8081",
        "DATABASE_URL": "sqlite:///test.db",
        "DEFAULT_CHECK_INTERVAL": "30",
        "LOG_LEVEL": "DEBUG"
    }
    
    with patch.dict(os.environ, env_vars):
        settings = Settings()
        assert settings.HOST == "127.0.0.1"
        assert settings.PORT == 9000
        assert settings.METUBE_URL == "http://metube:8081"
        assert settings.DATABASE_URL.endswith("test.db")
        assert settings.DEFAULT_CHECK_INTERVAL == 30
        assert settings.LOG_LEVEL == "DEBUG"