from datetime import timedelta
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.db.session import get_db
from app.core import security
from app.core.config import settings
from app.models.user import User
from app.schemas.user import Token, UserCreate, User as UserSchema, UserLogin

router = APIRouter()


@router.post("/register", response_model=UserSchema)
def register(user_data: UserCreate, db: Session = Depends(get_db)):
    db_user = db.query(User).filter(User.email == user_data.email).first()
    if db_user:
        raise HTTPException(status_code=400, detail="Email already registered")

    hashed_password = security.get_password_hash(user_data.password)
    db_user = User(
        email=user_data.email,
        full_name=user_data.full_name,
        phone=user_data.phone,
        hashed_password=hashed_password,
    )
    db.add(db_user)
    db.commit()
    db.refresh(db_user)
    return db_user


@router.post("/login", response_model=Token)
def login(user_credentials: UserLogin, db: Session = Depends(get_db)):
    user = db.query(User).filter(User.email == user_credentials.email).first()

    if not user or not security.verify_password(
        user_credentials.password, user.hashed_password
    ):
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect email or password",
            headers={"WWW-Authenticate": "Bearer"},
        )

    if not user.is_active:
        raise HTTPException(status_code=400, detail="Inactive user")

    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    access_token = security.create_access_token(
        data={"sub": user.email}, expires_delta=access_token_expires
    )

    return {"access_token": access_token, "token_type": "bearer"}