137 lines
5.1 KiB
Python
137 lines
5.1 KiB
Python
from fastapi import APIRouter, Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy import select
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from datetime import datetime, timedelta
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from jose import JWTError, jwt
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from passlib.context import CryptContext
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import secrets
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from app.database import get_db
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from app.models import User
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from app.schemas import UserCreate, UserResponse, AgentRegister, Token
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from app.config import settings
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router = APIRouter()
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
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def verify_password(plain_password, hashed_password):
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password):
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return pwd_context.hash(password)
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def create_access_token(data: dict, expires_delta: timedelta = None):
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=15)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
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return encoded_jwt
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async def get_current_user(token: str = Depends(oauth2_scheme), db: AsyncSession = Depends(get_db)):
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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(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
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username: str = payload.get("sub")
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if username 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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result = await db.execute(select(User).where(User.username == username))
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user = result.scalar_one_or_none()
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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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async def get_current_active_user(current_user: User = Depends(get_current_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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@router.post("/register", response_model=UserResponse)
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async def register(user: UserCreate, db: AsyncSession = Depends(get_db)):
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# Check if user exists
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result = await db.execute(select(User).where(User.username == user.username))
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if result.scalar_one_or_none():
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raise HTTPException(status_code=400, detail="Username already registered")
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if user.email:
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result = await db.execute(select(User).where(User.email == user.email))
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if result.scalar_one_or_none():
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raise HTTPException(status_code=400, detail="Email already registered")
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hashed_password = get_password_hash(user.password) if user.password else None
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db_user = User(
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username=user.username,
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email=user.email,
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type=user.type,
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hashed_password=hashed_password,
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public_key=user.public_key,
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is_judge=user.is_judge,
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)
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db.add(db_user)
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await db.commit()
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await db.refresh(db_user)
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return db_user
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@router.post("/register/agent", response_model=dict)
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async def register_agent(agent: AgentRegister, db: AsyncSession = Depends(get_db)):
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"""Register an AI agent with API key authentication"""
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result = await db.execute(select(User).where(User.username == agent.username))
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if result.scalar_one_or_none():
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raise HTTPException(status_code=400, detail="Username already registered")
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# Generate API key
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api_key = secrets.token_urlsafe(32)
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db_user = User(
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username=agent.username,
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email=agent.email,
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type=agent.type,
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public_key=agent.public_key,
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hashed_password=api_key, # Store API key as hashed password for simplicity
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is_judge=True, # Agents are potential judges by default
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)
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db.add(db_user)
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await db.commit()
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await db.refresh(db_user)
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return {
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"user_id": db_user.id,
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"username": db_user.username,
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"api_key": api_key, # Return only once
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"type": db_user.type,
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}
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@router.post("/login", response_model=Token)
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async def login(form_data: OAuth2PasswordRequestForm = Depends(), db: AsyncSession = Depends(get_db)):
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result = await db.execute(select(User).where(User.username == form_data.username))
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user = result.scalar_one_or_none()
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if not user or not verify_password(form_data.password, user.hashed_password):
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Incorrect username or password",
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headers={"WWW-Authenticate": "Bearer"},
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)
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access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
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access_token = create_access_token(
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data={"sub": user.username, "type": user.type}, expires_delta=access_token_expires
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)
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return {"access_token": access_token, "token_type": "bearer"}
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@router.get("/me", response_model=UserResponse)
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async def read_users_me(current_user: User = Depends(get_current_active_user)):
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return current_user
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