from fastapi import APIRouter, HTTPException, Depends
from sqlalchemy.orm import Session
from ..schemas import UserCreate, UserOut, LoginIn, Token
from ..models import User
from ..database import get_db
from ..core.security import hash_password, verify_password, create_access_token

router = APIRouter(prefix="/api/auth", tags=["Auth"])

@router.post("/signup", response_model=Token)
def signup(payload: UserCreate, db: Session = Depends(get_db)):
    if db.query(User).filter(User.email == payload.email).first():
        raise HTTPException(status_code=400, detail="User already exists")
    user = User(email=payload.email, password_hash=hash_password(payload.password))
    db.add(user)
    db.commit()
    db.refresh(user)
    token = create_access_token(sub=user.email)
    return {"access_token": token}

@router.post("/login", response_model=Token)
def login(payload: LoginIn, db: Session = Depends(get_db)):
    user = db.query(User).filter(User.email == payload.email).first()
    if not user or not verify_password(payload.password, user.password_hash):
        raise HTTPException(status_code=401, detail="Invalid credentials")
    token = create_access_token(sub=user.email)
    return {"access_token": token}