41bbd8c182
Complete rewrite from task management to full-featured chat system: Core Features: - Real-time WebSocket messaging with connection management - Direct messages and group chats with admin controls - Message types: text, images, videos, audio, documents - Message status tracking: sent, delivered, read receipts - Typing indicators and user presence (online/offline) - Message replies, editing, and deletion Security & Encryption: - End-to-end encryption with RSA + AES hybrid approach - JWT authentication for API and WebSocket connections - Secure file storage with access control - Automatic RSA key pair generation per user Media & File Sharing: - Multi-format file upload (images, videos, audio, documents) - Automatic thumbnail generation for images/videos - File size validation and MIME type checking - Secure download endpoints with permission checks Notifications & Alerts: - Real-time WebSocket notifications - Push notifications via Firebase integration - @username mention alerts with notification history - Unread message and mention counting - Custom notification types (message, mention, group invite) Advanced Features: - Group chat management with roles (member, admin, owner) - User search and chat member management - Message pagination and chat history - Last seen timestamps and activity tracking - Comprehensive API documentation with WebSocket events Architecture: - Clean layered architecture with services, models, schemas - WebSocket connection manager for real-time features - Modular notification system with multiple channels - Comprehensive error handling and validation - Production-ready with Docker support Technologies: FastAPI, WebSocket, SQLAlchemy, SQLite, Cryptography, Firebase, Pillow
54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from jose import jwt, JWTError
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from sqlalchemy.orm import Session
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from app.db.session import get_db
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from app.core.security import SECRET_KEY, ALGORITHM
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from app.models.user import User
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security = HTTPBearer()
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def get_current_user(
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db: Session = Depends(get_db),
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credentials: HTTPAuthorizationCredentials = Depends(security)
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) -> User:
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(credentials.credentials, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: str = payload.get("sub")
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if user_id is None:
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raise credentials_exception
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except JWTError:
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raise credentials_exception
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user = db.query(User).filter(User.id == int(user_id)).first()
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if user is None:
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raise credentials_exception
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return user
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def get_current_active_user(
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current_user: User = Depends(get_current_user),
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) -> User:
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if not current_user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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return current_user
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async def get_user_from_token(token: str, db: Session) -> User:
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"""Get user from WebSocket token"""
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: str = payload.get("sub")
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if user_id is None:
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return None
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user = db.query(User).filter(User.id == int(user_id)).first()
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if user is None or not user.is_active:
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return None
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return user
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except JWTError:
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return None |