Sergey Vanyushkin
87b094220d
Complete architectural refactoring from simple MVC to Clean Architecture/DDD pattern: Domain Layer: - Add entities (Post, BaseEntity) with business logic - Add value objects (Title, Content, Slug) with validation - Add repository interfaces (PostRepository) - Add domain exceptions Application Layer: - Add use cases (CreatePost, GetPost, UpdatePost, DeletePost, ListPosts, PublishPost) - Add DTOs for data transfer - Add TransactionManager interface Infrastructure Layer: - Add SQLAlchemy models and async database connection - Add SQLAlchemyPostRepository implementation - Add Dishka DI container with providers - Add error handlers and middleware Presentation Layer: - Add FastAPI routes with Dishka integration - Add Pydantic schemas - Add dependency injection using FromDishka[T] Other Changes: - Remove old flat structure (api/, common/, core/, modules/) - Add hatchling build system for package scripts - Add blog CLI command - Update AGENTS.md with new architecture docs - All 48 tests passing, mypy clean, ruff clean
36 lines
1.0 KiB
Python
36 lines
1.0 KiB
Python
"""Delete post use case."""
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from uuid import UUID
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from app.application.interfaces import TransactionManager
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from app.domain.exceptions import ForbiddenException, NotFoundException
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from app.domain.repositories import PostRepository
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class DeletePostUseCase:
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"""Use case for deleting a blog post."""
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def __init__(
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self,
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post_repo: PostRepository,
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tx_manager: TransactionManager,
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) -> None:
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self._post_repo = post_repo
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self._tx_manager = tx_manager
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async def execute(self, post_id: UUID, current_user_id: str) -> None:
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"""Execute the use case."""
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post = await self._post_repo.get_by_id(post_id)
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if not post:
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raise NotFoundException(f"Post with id '{post_id}' not found")
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# Check authorization
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if post.author_id != current_user_id:
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raise ForbiddenException("You can only delete your own posts")
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# Delete the post
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await self._post_repo.delete(post_id)
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# Commit transaction
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await self._tx_manager.commit()
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