"""Tests for SerieScanner class - file-based operations."""

import os
import tempfile
from unittest.mock import MagicMock, patch

import pytest

from src.core.entities.series import Serie
from src.core.SerieScanner import SerieScanner


@pytest.fixture
def temp_directory():
    """Create a temporary directory with subdirectories for testing."""
    with tempfile.TemporaryDirectory() as tmpdir:
        # Create an anime folder with an mp4 file
        anime_folder = os.path.join(tmpdir, "Attack on Titan (2013)")
        os.makedirs(anime_folder, exist_ok=True)
        
        # Create a dummy mp4 file
        mp4_path = os.path.join(
            anime_folder, "Attack on Titan - S01E001 - (German Dub).mp4"
        )
        with open(mp4_path, "w") as f:
            f.write("dummy mp4")
        
        yield tmpdir


@pytest.fixture
def mock_loader():
    """Create a mock Loader instance."""
    loader = MagicMock()
    loader.get_season_episode_count = MagicMock(return_value={1: 25})
    loader.is_language = MagicMock(return_value=True)
    return loader


@pytest.fixture
def sample_serie():
    """Create a sample Serie for testing."""
    return Serie(
        key="attack-on-titan",
        name="Attack on Titan",
        site="aniworld.to",
        folder="Attack on Titan (2013)",
        episodeDict={1: [2, 3, 4]}
    )


class TestSerieScannerInitialization:
    """Test SerieScanner initialization."""

    def test_init_success(self, temp_directory, mock_loader):
        """Test successful initialization."""
        scanner = SerieScanner(temp_directory, mock_loader)
        
        assert scanner.directory == os.path.abspath(temp_directory)
        assert scanner.loader == mock_loader
        assert scanner.keyDict == {}

    def test_init_empty_path_raises_error(self, mock_loader):
        """Test initialization with empty path raises ValueError."""
        with pytest.raises(ValueError, match="empty"):
            SerieScanner("", mock_loader)

    def test_init_nonexistent_path_raises_error(self, mock_loader):
        """Test initialization with non-existent path raises ValueError."""
        with pytest.raises(ValueError, match="does not exist"):
            SerieScanner("/nonexistent/path", mock_loader)


class TestSerieScannerScan:
    """Test file-based scan operations."""

    def test_file_based_scan_works(
        self, temp_directory, mock_loader, sample_serie
    ):
        """Test file-based scan works properly."""
        scanner = SerieScanner(temp_directory, mock_loader)
        
        with patch.object(scanner, 'get_total_to_scan', return_value=1):
            with patch.object(
                scanner,
                '_SerieScanner__find_mp4_files',
                return_value=iter([
                    ("Attack on Titan (2013)", ["S01E001.mp4"])
                ])
            ):
                with patch.object(
                    scanner,
                    '_SerieScanner__read_data_from_file',
                    return_value=sample_serie
                ):
                    with patch.object(
                        scanner,
                        '_SerieScanner__get_missing_episodes_and_season',
                        return_value=({1: [2, 3]}, "aniworld.to")
                    ):
                        with patch.object(
                            sample_serie, 'save_to_file'
                        ) as mock_save:
                            scanner.scan()
                            
                            # Verify file was saved
                            mock_save.assert_called_once()

    def test_keydict_populated_after_scan(
        self, temp_directory, mock_loader, sample_serie
    ):
        """Test keyDict is populated after scan."""
        scanner = SerieScanner(temp_directory, mock_loader)
        
        with patch.object(scanner, 'get_total_to_scan', return_value=1):
            with patch.object(
                scanner,
                '_SerieScanner__find_mp4_files',
                return_value=iter([
                    ("Attack on Titan (2013)", ["S01E001.mp4"])
                ])
            ):
                with patch.object(
                    scanner,
                    '_SerieScanner__read_data_from_file',
                    return_value=sample_serie
                ):
                    with patch.object(
                        scanner,
                        '_SerieScanner__get_missing_episodes_and_season',
                        return_value=({1: [2, 3]}, "aniworld.to")
                    ):
                        with patch.object(sample_serie, 'save_to_file'):
                            scanner.scan()
                            
                            assert sample_serie.key in scanner.keyDict