feat: add JWT authentication and AGENTS.md

api/app/utils/auth.py

@@ -0,0 +1,51 @@
+from datetime import datetime, timedelta, timezone
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import Request, HTTPException
+from sqlalchemy.orm import Session
+
+from app.config import JWT_SECRET, ACCESS_TOKEN_EXPIRE_MINUTES
+from app.database import get_db
+from app.models.user_settings import UserSettings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+ALGORITHM = "HS256"
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, JWT_SECRET, algorithm=ALGORITHM)
+
+
+def decode_access_token(token: str) -> dict:
+    return jwt.decode(token, JWT_SECRET, algorithms=[ALGORITHM])
+
+
+def get_current_user(request: Request) -> dict:
+    auth_header = request.headers.get("Authorization", "")
+    token = auth_header.replace("Bearer ", "")
+    if not token:
+        raise HTTPException(status_code=401, detail="未登录")
+    try:
+        payload = decode_access_token(token)
+        return payload
+    except JWTError:
+        raise HTTPException(status_code=401, detail="登录已过期，请重新登录")
+
+
+def set_default_password(db: Session, settings: UserSettings):
+    if not settings.password_hash:
+        settings.password_hash = hash_password("elysia")
+        db.commit()