"""Tests for NFO service dependency with config fallback.

Tests that get_nfo_service() correctly loads TMDB API key from config.json
when it's not in settings (e.g., after server reload in development).
"""
from unittest.mock import MagicMock, patch

import pytest
from fastapi import HTTPException

from src.config.settings import settings
from src.server.api.nfo import get_nfo_service
from src.server.models.config import AppConfig, NFOConfig


@pytest.mark.asyncio
async def test_get_nfo_service_with_settings_tmdb_key():
    """Test get_nfo_service when TMDB key is in settings."""
    # Set TMDB API key in settings
    original_key = settings.tmdb_api_key
    settings.tmdb_api_key = "test_api_key_from_settings"
    
    try:
        nfo_service = await get_nfo_service()
        assert nfo_service is not None
        assert nfo_service.tmdb_client.api_key == "test_api_key_from_settings"
    finally:
        settings.tmdb_api_key = original_key


@pytest.mark.asyncio
async def test_get_nfo_service_fallback_to_config():
    """Test get_nfo_service falls back to config.json when key not in settings."""
    # Clear TMDB API key from settings
    original_key = settings.tmdb_api_key
    settings.tmdb_api_key = None
    
    try:
        # Mock config service to return NFO config with API key
        mock_config = AppConfig(
            name="Test",
            data_dir="data",
            nfo=NFOConfig(
                tmdb_api_key="test_api_key_from_config",
                auto_create=False,
                update_on_scan=False
            )
        )
        
        with patch('src.server.services.config_service.get_config_service') as mock_get_config:
            mock_config_service = MagicMock()
            mock_config_service.load_config.return_value = mock_config
            mock_get_config.return_value = mock_config_service
            
            nfo_service = await get_nfo_service()
            assert nfo_service is not None
            assert nfo_service.tmdb_client.api_key == "test_api_key_from_config"
    finally:
        settings.tmdb_api_key = original_key


@pytest.mark.asyncio
async def test_get_nfo_service_no_key_raises_503():
    """Test get_nfo_service raises 503 when no TMDB key available."""
    # Clear TMDB API key from settings
    original_key = settings.tmdb_api_key
    settings.tmdb_api_key = None
    
    try:
        # Mock config service to return config without API key
        mock_config = AppConfig(
            name="Test",
            data_dir="data",
            nfo=NFOConfig(
                tmdb_api_key=None,
                auto_create=False,
                update_on_scan=False
            )
        )
        
        with patch('src.server.services.config_service.get_config_service') as mock_get_config:
            mock_config_service = MagicMock()
            mock_config_service.load_config.return_value = mock_config
            mock_get_config.return_value = mock_config_service
            
            with pytest.raises(HTTPException) as exc_info:
                await get_nfo_service()
            
            assert exc_info.value.status_code == 503
            assert "TMDB API key required" in exc_info.value.detail
    finally:
        settings.tmdb_api_key = original_key


@pytest.mark.asyncio
async def test_get_nfo_service_config_load_fails_raises_503():
    """Test get_nfo_service raises 503 when config loading fails."""
    # Clear TMDB API key from settings
    original_key = settings.tmdb_api_key
    settings.tmdb_api_key = None
    
    try:
        # Mock config service to raise exception
        with patch('src.server.services.config_service.get_config_service') as mock_get_config:
            mock_get_config.side_effect = Exception("Config file not found")
            
            with pytest.raises(HTTPException) as exc_info:
                await get_nfo_service()
            
            assert exc_info.value.status_code == 503
            assert "TMDB API key required" in exc_info.value.detail
    finally:
        settings.tmdb_api_key = original_key