feat: add core application constants, ownership verification, and repository utilities
- Introduced application-wide constants for file uploads, image processing, pagination, and authentication in `constants.py`. - Implemented synchronous and asynchronous board ownership verification functions in `ownership.py`. - Created a base repository class with common CRUD operations in `repository.py`. - Added standard response utilities for error and success messages in `responses.py`. - Refactored image validation to utilize constants for file size and MIME types. - Enhanced frontend components with consistent styling and validation utilities for forms. - Established global styles for buttons, forms, loading indicators, and messages to ensure a cohesive UI experience.
This commit is contained in:
Danilo Reyes
38
backend/app/core/constants.py
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38
backend/app/core/constants.py
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"""Application-wide constants."""
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# File upload limits
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MAX_IMAGE_SIZE = 52_428_800 # 50MB in bytes
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MAX_ZIP_SIZE = 209_715_200 # 200MB in bytes
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# Image processing
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MAX_IMAGE_DIMENSION = 10_000 # Max width or height in pixels
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THUMBNAIL_SIZES = {
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"low": 800, # For slow connections (<1 Mbps)
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"medium": 1600, # For medium connections (1-5 Mbps)
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"high": 3200, # For fast connections (>5 Mbps)
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}
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# Pagination defaults
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DEFAULT_PAGE_SIZE = 50
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MAX_PAGE_SIZE = 100
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# Board limits
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MAX_BOARD_TITLE_LENGTH = 255
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MAX_BOARD_DESCRIPTION_LENGTH = 1000
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MAX_IMAGES_PER_BOARD = 1000
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# Authentication
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TOKEN_EXPIRE_HOURS = 168 # 7 days
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PASSWORD_MIN_LENGTH = 8
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# Supported image formats
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ALLOWED_MIME_TYPES = {
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"image/jpeg",
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"image/jpg",
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"image/png",
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"image/gif",
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"image/webp",
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"image/svg+xml",
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}
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ALLOWED_EXTENSIONS = {".jpg", ".jpeg", ".png", ".gif", ".webp", ".svg"}
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69
backend/app/core/ownership.py
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69
backend/app/core/ownership.py
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"""Ownership verification utilities."""
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from uuid import UUID
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from fastapi import HTTPException, status
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import Session
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from app.database.models.board import Board
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def verify_board_ownership_sync(db: Session, board_id: UUID, user_id: UUID) -> Board:
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"""
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Verify board ownership (synchronous).
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Args:
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db: Database session
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board_id: Board UUID
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user_id: User UUID
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Returns:
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Board instance if owned by user
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Raises:
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HTTPException: 404 if board not found or not owned by user
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"""
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stmt = select(Board).where(
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Board.id == board_id,
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Board.user_id == user_id,
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Board.is_deleted == False, # noqa: E712
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)
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board = db.execute(stmt).scalar_one_or_none()
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if not board:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Board {board_id} not found")
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return board
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async def verify_board_ownership_async(db: AsyncSession, board_id: UUID, user_id: UUID) -> Board:
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"""
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Verify board ownership (asynchronous).
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Args:
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db: Async database session
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board_id: Board UUID
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user_id: User UUID
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Returns:
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Board instance if owned by user
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Raises:
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HTTPException: 404 if board not found or not owned by user
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"""
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stmt = select(Board).where(
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Board.id == board_id,
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Board.user_id == user_id,
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Board.is_deleted == False, # noqa: E712
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)
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result = await db.execute(stmt)
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board = result.scalar_one_or_none()
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if not board:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Board {board_id} not found")
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return board
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119
backend/app/core/repository.py
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119
backend/app/core/repository.py
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"""Base repository with common database operations."""
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from typing import TypeVar
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from uuid import UUID
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from sqlalchemy import func, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import Session
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# Type variable for model classes
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ModelType = TypeVar("ModelType")
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class BaseRepository[ModelType]:
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"""Base repository with common CRUD operations."""
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def __init__(self, model: type[ModelType], db: Session | AsyncSession):
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"""
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Initialize repository.
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Args:
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model: SQLAlchemy model class
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db: Database session (sync or async)
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"""
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self.model = model
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self.db = db
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def get_by_id_sync(self, id: UUID) -> ModelType | None:
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"""
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Get entity by ID (synchronous).
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Args:
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id: Entity UUID
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Returns:
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Entity if found, None otherwise
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"""
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return self.db.query(self.model).filter(self.model.id == id).first()
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async def get_by_id_async(self, id: UUID) -> ModelType | None:
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"""
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Get entity by ID (asynchronous).
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Args:
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id: Entity UUID
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Returns:
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Entity if found, None otherwise
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"""
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stmt = select(self.model).where(self.model.id == id)
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result = await self.db.execute(stmt)
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return result.scalar_one_or_none()
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def count_sync(self, **filters) -> int:
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"""
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Count entities with optional filters (synchronous).
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Args:
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**filters: Column filters (column_name=value)
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Returns:
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Count of matching entities
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"""
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query = self.db.query(func.count(self.model.id))
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for key, value in filters.items():
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query = query.filter(getattr(self.model, key) == value)
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return query.scalar()
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async def count_async(self, **filters) -> int:
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"""
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Count entities with optional filters (asynchronous).
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Args:
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**filters: Column filters (column_name=value)
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Returns:
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Count of matching entities
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"""
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stmt = select(func.count(self.model.id))
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for key, value in filters.items():
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stmt = stmt.where(getattr(self.model, key) == value)
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result = await self.db.execute(stmt)
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return result.scalar_one()
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def delete_sync(self, id: UUID) -> bool:
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"""
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Delete entity by ID (synchronous).
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Args:
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id: Entity UUID
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Returns:
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True if deleted, False if not found
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"""
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entity = self.get_by_id_sync(id)
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if not entity:
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return False
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self.db.delete(entity)
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self.db.commit()
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return True
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async def delete_async(self, id: UUID) -> bool:
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"""
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Delete entity by ID (asynchronous).
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Args:
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id: Entity UUID
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Returns:
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True if deleted, False if not found
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"""
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entity = await self.get_by_id_async(id)
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if not entity:
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return False
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await self.db.delete(entity)
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await self.db.commit()
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return True
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75
backend/app/core/responses.py
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75
backend/app/core/responses.py
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"""Standard response utilities."""
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from typing import Any
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from fastapi import status
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class ErrorResponse:
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"""Standard error response formats."""
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@staticmethod
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def not_found(resource: str = "Resource") -> dict[str, Any]:
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"""404 Not Found response."""
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return {
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"status_code": status.HTTP_404_NOT_FOUND,
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"detail": f"{resource} not found",
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}
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@staticmethod
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def forbidden(message: str = "Access denied") -> dict[str, Any]:
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"""403 Forbidden response."""
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return {
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"status_code": status.HTTP_403_FORBIDDEN,
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"detail": message,
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}
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@staticmethod
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def unauthorized(message: str = "Authentication required") -> dict[str, Any]:
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"""401 Unauthorized response."""
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return {
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"status_code": status.HTTP_401_UNAUTHORIZED,
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"detail": message,
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"headers": {"WWW-Authenticate": "Bearer"},
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}
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@staticmethod
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def bad_request(message: str) -> dict[str, Any]:
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"""400 Bad Request response."""
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return {
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"status_code": status.HTTP_400_BAD_REQUEST,
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"detail": message,
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}
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@staticmethod
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def conflict(message: str) -> dict[str, Any]:
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"""409 Conflict response."""
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return {
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"status_code": status.HTTP_409_CONFLICT,
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"detail": message,
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}
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class SuccessResponse:
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"""Standard success response formats."""
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@staticmethod
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def created(data: dict[str, Any], message: str = "Created successfully") -> dict[str, Any]:
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"""201 Created response."""
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return {
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"message": message,
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"data": data,
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}
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@staticmethod
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def ok(data: dict[str, Any] | None = None, message: str = "Success") -> dict[str, Any]:
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"""200 OK response."""
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response = {"message": message}
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if data:
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response["data"] = data
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return response
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@staticmethod
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def no_content() -> None:
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"""204 No Content response."""
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return None
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