"""Integration tests for series parsing edge cases.

This module tests series folder name parsing, year extraction,
special characters, Unicode names, and malformed folder structures.
"""
import os
import tempfile
from pathlib import Path
from unittest.mock import Mock

import pytest

from src.core.entities.series import Serie
from src.core.providers.base_provider import Loader
from src.core.SerieScanner import SerieScanner


@pytest.fixture
def mock_loader():
    """Create a mock loader for testing."""
    loader = Mock(spec=Loader)
    loader.get_year = Mock(return_value=2023)
    loader.get_missing_episodes = Mock(return_value={})
    return loader


@pytest.fixture
def temp_anime_dir():
    """Create a temporary anime directory for testing."""
    with tempfile.TemporaryDirectory() as tmpdir:
        yield Path(tmpdir)


class TestYearVariations:
    """Test series folder names with various year formats."""
    
    def test_year_in_parentheses(self, temp_anime_dir, mock_loader):
        """Test year extraction from folder name (YYYY)."""
        # Create folder with year
        folder = temp_anime_dir / "Attack on Titan (2013)"
        folder.mkdir()
        (folder / "key").write_text("attack-on-titan")
        
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Extract year
        year = scanner._extract_year_from_folder_name("Attack on Titan (2013)")
        
        assert year == 2013
    
    def test_year_in_brackets(self, temp_anime_dir, mock_loader):
        """Test year extraction from folder name [YYYY]."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Brackets format not supported - should return None
        year = scanner._extract_year_from_folder_name("Attack on Titan [2013]")
        
        assert year is None
    
    def test_year_at_start(self, temp_anime_dir, mock_loader):
        """Test year at start of folder name."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Year at start in parentheses
        year = scanner._extract_year_from_folder_name("(2013) Attack on Titan")
        
        # Should extract year from anywhere in the name
        assert year == 2013
    
    def test_year_in_middle(self, temp_anime_dir, mock_loader):
        """Test year in middle of folder name."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        year = scanner._extract_year_from_folder_name("Attack (2013) on Titan")
        
        assert year == 2013
    
    def test_multiple_years(self, temp_anime_dir, mock_loader):
        """Test folder with multiple years - should take first match."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        year = scanner._extract_year_from_folder_name("Series (2010) Remake (2020)")
        
        # Should extract first year found
        assert year == 2010
    
    def test_no_year(self, temp_anime_dir, mock_loader):
        """Test folder name without year."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        year = scanner._extract_year_from_folder_name("Attack on Titan")
        
        assert year is None
    
    def test_invalid_year_format(self, temp_anime_dir, mock_loader):
        """Test invalid year formats."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Too short
        year1 = scanner._extract_year_from_folder_name("Series (202)")
        assert year1 is None
        
        # Too long
        year2 = scanner._extract_year_from_folder_name("Series (20202)")
        assert year2 is None
        
        # Non-numeric
        year3 = scanner._extract_year_from_folder_name("Series (ABCD)")
        assert year3 is None
    
    def test_year_out_of_range(self, temp_anime_dir, mock_loader):
        """Test year outside valid range (1900-2100)."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Too old
        year1 = scanner._extract_year_from_folder_name("Series (1899)")
        assert year1 is None
        
        # Too far in future
        year2 = scanner._extract_year_from_folder_name("Series (2101)")
        assert year2 is None
        
        # Valid edges
        year3 = scanner._extract_year_from_folder_name("Series (1900)")
        assert year3 == 1900
        
        year4 = scanner._extract_year_from_folder_name("Series (2100)")
        assert year4 == 2100


class TestSpecialCharacters:
    """Test series names with special characters."""
    
    def test_colon_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with colon."""
        serie = Serie(
            key="re-zero",
            name="Re:Zero - Starting Life in Another World",
            site="aniworld.to",
            folder="Re Zero",
            episodeDict={}
        )
        
        # Sanitized folder should remove colon
        sanitized = serie.sanitized_folder
        assert ":" not in sanitized
        assert "Re" in sanitized
        assert "Zero" in sanitized
    
    def test_slash_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with slash."""
        serie = Serie(
            key="fate-stay-night",
            name="Fate/Stay Night: Unlimited Blade Works",
            site="aniworld.to",
            folder="Fate Stay Night",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "/" not in sanitized
        assert "\\" not in sanitized
    
    def test_question_mark_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with question mark."""
        serie = Serie(
            key="is-it-wrong",
            name="Is It Wrong to Try to Pick Up Girls in a Dungeon?",
            site="aniworld.to",
            folder="Is It Wrong",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "?" not in sanitized
    
    def test_asterisk_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with asterisk."""
        serie = Serie(
            key="series",
            name="Series * Special",
            site="aniworld.to",
            folder="Series Special",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "*" not in sanitized
    
    def test_pipe_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with pipe character."""
        serie = Serie(
            key="series",
            name="Series | Part 2",
            site="aniworld.to",
            folder="Series Part 2",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "|" not in sanitized
    
    def test_quotes_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with quotes."""
        serie = Serie(
            key="series",
            name='Series "Subtitle" Edition',
            site="aniworld.to",
            folder="Series Subtitle Edition",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Quotes should be removed or replaced
        assert '"' not in sanitized or sanitized.count('"') == 0
    
    def test_less_greater_than_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with < and >."""
        serie = Serie(
            key="series",
            name="Series <Special> Edition",
            site="aniworld.to",
            folder="Series Special Edition",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "<" not in sanitized
        assert ">" not in sanitized
    
    def test_multiple_special_chars(self, temp_anime_dir, mock_loader):
        """Test series name with multiple special characters."""
        serie = Serie(
            key="complex",
            name="Re:Zero / Fate * Special? <Edition>",
            site="aniworld.to",
            folder="Re Zero Fate Special Edition",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Should remove all special chars
        invalid_chars = [':', '/', '*', '?', '<', '>']
        for char in invalid_chars:
            assert char not in sanitized


class TestMultipleSpaces:
    """Test series names with multiple spaces."""
    
    def test_double_spaces(self, temp_anime_dir, mock_loader):
        """Test series name with double spaces."""
        serie = Serie(
            key="series",
            name="Attack  on  Titan",
            site="aniworld.to",
            folder="Attack  on  Titan",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Multiple spaces should be preserved or normalized to single space
        assert "Attack" in sanitized
        assert "Titan" in sanitized
    
    def test_leading_trailing_spaces(self, temp_anime_dir, mock_loader):
        """Test series name with leading/trailing spaces."""
        serie = Serie(
            key="series",
            name="  Attack on Titan  ",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Leading/trailing spaces should be stripped
        assert not sanitized.startswith(" ")
        assert not sanitized.endswith(" ")
    
    def test_tabs_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with tab characters."""
        serie = Serie(
            key="series",
            name="Attack\ton\tTitan",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Tabs should be handled (removed or replaced)
        assert "\t" not in sanitized or sanitized.replace("\t", " ")


class TestUnicodeNames:
    """Test series names in different languages (Unicode)."""
    
    def test_japanese_name(self, temp_anime_dir, mock_loader):
        """Test series name in Japanese."""
        serie = Serie(
            key="shingeki",
            name="進撃の巨人",
            site="aniworld.to",
            folder="進撃の巨人",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Unicode should be preserved
        assert "進撃の巨人" in sanitized
    
    def test_chinese_name(self, temp_anime_dir, mock_loader):
        """Test series name in Chinese."""
        serie = Serie(
            key="series",
            name="进击的巨人",
            site="aniworld.to",
            folder="进击的巨人",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "进击的巨人" in sanitized
    
    def test_korean_name(self, temp_anime_dir, mock_loader):
        """Test series name in Korean."""
        serie = Serie(
            key="series",
            name="진격의 거인",
            site="aniworld.to",
            folder="진격의 거인",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "진격의" in sanitized
    
    def test_arabic_name(self, temp_anime_dir, mock_loader):
        """Test series name in Arabic."""
        serie = Serie(
            key="series",
            name="هجوم العمالقة",
            site="aniworld.to",
            folder="هجوم العمالقة",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "هجوم" in sanitized
    
    def test_cyrillic_name(self, temp_anime_dir, mock_loader):
        """Test series name in Cyrillic."""
        serie = Serie(
            key="series",
            name="Атака Титанов",
            site="aniworld.to",
            folder="Атака Титанов",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "Атака" in sanitized
    
    def test_mixed_languages(self, temp_anime_dir, mock_loader):
        """Test series name with mixed languages."""
        serie = Serie(
            key="series",
            name="Attack on Titan - 進撃の巨人",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        assert "Attack" in sanitized
        assert "進撃の巨人" in sanitized
    
    def test_emoji_in_name(self, temp_anime_dir, mock_loader):
        """Test series name with emoji."""
        serie = Serie(
            key="series",
            name="Series ⚔️ Special",
            site="aniworld.to",
            folder="Series Special",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Emoji should be handled gracefully
        assert "Series" in sanitized


class TestMalformedFolderStructures:
    """Test handling of malformed folder structures."""
    
    def test_empty_folder_name(self, temp_anime_dir, mock_loader):
        """Test handling of empty folder name."""
        with pytest.raises(ValueError, match="Series folder cannot be empty"):
            scanner = SerieScanner(str(temp_anime_dir), mock_loader)
            scanner.scan_single_series("test-key", "")
    
    def test_whitespace_only_folder(self, temp_anime_dir, mock_loader):
        """Test handling of whitespace-only folder name."""
        with pytest.raises(ValueError, match="Series folder cannot be empty"):
            scanner = SerieScanner(str(temp_anime_dir), mock_loader)
            scanner.scan_single_series("test-key", "   ")
    
    def test_folder_with_newlines(self, temp_anime_dir, mock_loader):
        """Test folder name with newline characters."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        # Newlines should be handled
        year = scanner._extract_year_from_folder_name("Series\n(2023)")
        # Still should extract year
        assert year == 2023
    
    def test_very_long_folder_name(self, temp_anime_dir, mock_loader):
        """Test handling of very long folder names."""
        long_name = "A" * 300  # Very long name
        serie = Serie(
            key="long",
            name=long_name,
            site="aniworld.to",
            folder=long_name,
            episodeDict={}
        )
        
        # Should handle long names without error
        sanitized = serie.sanitized_folder
        assert len(sanitized) > 0
    
    def test_folder_name_with_dots(self, temp_anime_dir, mock_loader):
        """Test folder name with dots."""
        scanner = SerieScanner(str(temp_anime_dir), mock_loader)
        
        year = scanner._extract_year_from_folder_name("Series.Name.2023.(2023)")
        assert year == 2023
    
    def test_folder_name_with_underscores(self, temp_anime_dir, mock_loader):
        """Test folder name with underscores."""
        serie = Serie(
            key="series",
            name="Attack_on_Titan",
            site="aniworld.to",
            folder="Attack_on_Titan",
            episodeDict={}
        )
        
        sanitized = serie.sanitized_folder
        # Underscores are valid filesystem chars
        assert "Attack" in sanitized


class TestNameWithYearProperty:
    """Test Serie.name_with_year property."""
    
    def test_name_with_year_adds_year(self):
        """Test that name_with_year adds year in parentheses."""
        serie = Serie(
            key="dororo",
            name="Dororo",
            site="aniworld.to",
            folder="Dororo",
            episodeDict={},
            year=2025
        )
        
        assert serie.name_with_year == "Dororo (2025)"
    
    def test_name_with_year_no_year(self):
        """Test name_with_year without year returns just name."""
        serie = Serie(
            key="dororo",
            name="Dororo",
            site="aniworld.to",
            folder="Dororo",
            episodeDict={}
        )
        
        assert serie.name_with_year == "Dororo"
    
    def test_name_with_year_used_in_sanitized_folder(self):
        """Test that sanitized_folder uses name_with_year."""
        serie = Serie(
            key="attack",
            name="Attack on Titan",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={},
            year=2013
        )
        
        sanitized = serie.sanitized_folder
        assert "(2013)" in sanitized
        assert "Attack on Titan" in sanitized


class TestEnsureFolderWithYear:
    """Test Serie.ensure_folder_with_year method."""
    
    def test_ensure_folder_adds_year_when_missing(self):
        """Test that ensure_folder_with_year adds year to folder."""
        serie = Serie(
            key="attack",
            name="Attack on Titan",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={},
            year=2013
        )
        
        result = serie.ensure_folder_with_year()
        
        assert "(2013)" in result
        assert serie.folder == result
    
    def test_ensure_folder_doesnt_duplicate_year(self):
        """Test that year isn't added if already present."""
        serie = Serie(
            key="attack",
            name="Attack on Titan",
            site="aniworld.to",
            folder="Attack on Titan (2013)",
            episodeDict={},
            year=2013
        )
        
        original_folder = serie.folder
        result = serie.ensure_folder_with_year()
        
        # Should not change
        assert result.count("(2013)") == 1
    
    def test_ensure_folder_no_year_unchanged(self):
        """Test that folder unchanged when no year available."""
        serie = Serie(
            key="attack",
            name="Attack on Titan",
            site="aniworld.to",
            folder="Attack on Titan",
            episodeDict={}
        )
        
        original_folder = serie.folder
        result = serie.ensure_folder_with_year()
        
        assert result == original_folder


class TestRealWorldScenarios:
    """Test real-world anime title scenarios."""
    
    def test_real_anime_titles(self):
        """Test with actual anime titles."""
        test_cases = [
            ("fate-stay-night", "Fate/Stay Night: UBW", "Fate Stay Night UBW"),
            ("86", "86: Eighty-Six", "86 Eighty-Six"),
            ("steins-gate", "Steins;Gate", "Steins Gate"),
            ("re-zero", "Re:Zero - Starting Life in Another World", "Re Zero"),
            ("demon-slayer", "Demon Slayer: Kimetsu no Yaiba", "Demon Slayer"),
        ]
        
        for key, name, expected_part in test_cases:
            serie = Serie(
                key=key,
                name=name,
                site="aniworld.to",
                folder="old-folder",
                episodeDict={}
            )
            
            sanitized = serie.sanitized_folder
            # Check that expected part is in sanitized name
            assert any(word in sanitized for word in expected_part.split())
            # Check invalid chars removed (< > : " / \ | ? *)
            assert ":" not in sanitized
            assert "/" not in sanitized
            assert "\\" not in sanitized
    
    def test_series_with_year_variations(self):
        """Test series with different year formats in name."""
        test_cases = [
            "Dororo (2019)",
            "Attack on Titan (2013)",
            "Perfect Blue (1997)",
            "Ghost in the Shell (1995)",
        ]
        
        for folder_name in test_cases:
            scanner = SerieScanner("/tmp", Mock(spec=Loader))
            year = scanner._extract_year_from_folder_name(folder_name)
            
            # Should extract year from all formats
            assert year is not None
            assert 1900 <= year <= 2100