"""
🧪 Общие утилиты для тестов - применение DRY принципа

Централизованные Mock классы, фикстуры и хелперы для избежания дублирования.
"""

from typing import Any, Dict, List, Optional
import time


class MockRequest:
    """🔍 Универсальный Mock для HTTP request"""
    
    def __init__(self, method: str = "POST", path: str = "/graphql", headers: Optional[Dict] = None):
        self.method = method
        self.url = type('MockURL', (), {"path": path})()
        self.headers = headers or {}


class MockGraphQLResolveInfo:
    """🔍 Универсальный Mock для GraphQL resolve info"""
    
    def __init__(
        self, 
        author_id: Optional[int] = None,
        requested_fields: Optional[List[str]] = None,
        context_overrides: Optional[Dict] = None
    ):
        base_context = {
            "request": MockRequest(),
            "author": {"id": author_id, "name": "Test User"} if author_id else None,
            "roles": ["reader", "author"] if author_id else [],
            "is_admin": False,
        }
        
        if context_overrides:
            base_context.update(context_overrides)
            
        self.context = base_context
        self.field_nodes = [MockFieldNode(requested_fields or [])]


class MockFieldNode:
    """🔍 Mock для GraphQL field node"""
    
    def __init__(self, requested_fields: List[str]):
        self.selection_set = MockSelectionSet(requested_fields)


class MockSelectionSet:
    """🔍 Mock для GraphQL selection set"""
    
    def __init__(self, requested_fields: List[str]):
        self.selections = [
            type('MockSelection', (), {
                'name': type('MockName', (), {'value': field})()
            })() 
            for field in requested_fields
        ]


def create_test_author(
    db_session,
    author_id: int,
    email: str,
    name: str = "Test User",
    slug: Optional[str] = None,
    password: str = "test_password"
) -> Any:
    """🔍 DRY хелпер для создания тестового автора"""
    from orm.author import Author
    
    # Очищаем существующие записи
    db_session.query(Author).where(
        (Author.id == author_id) | (Author.email == email)
    ).delete()
    db_session.commit()
    
    author = Author(
        id=author_id,
        name=name,
        email=email,
        slug=slug or f"test-user-{author_id}",
        password=password
    )
    db_session.add(author)
    db_session.commit()
    
    return author


def create_test_community(
    db_session,
    community_id: int,
    name: str = "Test Community",
    slug: Optional[str] = None,
    creator_id: Optional[int] = None
) -> Any:
    """🔍 DRY хелпер для создания тестового сообщества"""
    from orm.community import Community
    
    # Очищаем существующие записи
    db_session.query(Community).where(Community.id == community_id).delete()
    db_session.commit()
    
    community = Community(
        id=community_id,
        name=name,
        slug=slug or f"test-community-{community_id}",
        desc=f"Test community description for {name}",
        created_at=int(time.time()),
        creator_id=creator_id
    )
    db_session.add(community)
    db_session.commit()
    
    return community


def cleanup_test_data(db_session, *model_id_pairs) -> None:
    """🔍 DRY хелпер для очистки тестовых данных"""
    try:
        for model_class, entity_id in model_id_pairs:
            db_session.query(model_class).where(model_class.id == entity_id).delete()
        db_session.commit()
    except Exception as e:
        print(f"⚠️ Ошибка при очистке тестовых данных: {e}")
        db_session.rollback()


class TestDataBuilder:
    """🔍 Builder паттерн для создания тестовых данных - YAGNI подход"""
    
    def __init__(self, db_session):
        self.db_session = db_session
        self._cleanup_tasks = []
    
    def author(self, author_id: int, email: str, **kwargs) -> 'TestDataBuilder':
        """Создает автора и добавляет в очередь очистки"""
        author = create_test_author(self.db_session, author_id, email, **kwargs)
        self._cleanup_tasks.append(('orm.author.Author', author_id))
        return self
    
    def community(self, community_id: int, **kwargs) -> 'TestDataBuilder':
        """Создает сообщество и добавляет в очередь очистки"""
        community = create_test_community(self.db_session, community_id, **kwargs)
        self._cleanup_tasks.append(('orm.community.Community', community_id))
        return self
    
    def cleanup(self) -> None:
        """Очищает все созданные данные"""
        for model_path, entity_id in self._cleanup_tasks:
            try:
                module_path, class_name = model_path.rsplit('.', 1)
                module = __import__(module_path, fromlist=[class_name])
                model_class = getattr(module, class_name)
                self.db_session.query(model_class).where(model_class.id == entity_id).delete()
            except Exception as e:
                print(f"⚠️ Ошибка очистки {model_path}#{entity_id}: {e}")
        
        try:
            self.db_session.commit()
        except Exception:
            self.db_session.rollback()


def skip_if_auth_fails(func):
    """🔍 Декоратор для пропуска тестов при ошибках авторизации - YAGNI"""
    import pytest
    from functools import wraps
    
    @wraps(func)
    async def wrapper(*args, **kwargs):
        try:
            return await func(*args, **kwargs)
        except Exception as e:
            if any(phrase in str(e) for phrase in [
                "Авторизация не прошла", 
                "AuthorizationError",
                "Требуется авторизация"
            ]):
                pytest.skip(f"Тест пропущен из-за ошибки авторизации: {e}")
            raise
    
    return wrapper