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

from app.core.database import get_db
from app.core.security import hash_password, verify_password, create_access_token
from app.models.user import User
from app.schemas.user import UserCreate, UserLogin, UserResponse

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


@router.post("/register", response_model=UserResponse)
def register(user_in: UserCreate, db: Session = Depends(get_db)):
    """Register new user"""
    # Check if user exists
    existing = db.query(User).filter(
        (User.email == user_in.email) | (User.username == user_in.username)
    ).first()
    
    if existing:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="User already exists"
        )
    
    # Create user
    user = User(
        email=user_in.email,
        username=user_in.username,
        full_name=user_in.full_name,
        hashed_password=hash_password(user_in.password)
    )
    db.add(user)
    db.commit()
    db.refresh(user)
    
    return user


@router.post("/login")
def login(user_in: UserLogin, db: Session = Depends(get_db)):
    """Login and get access token"""
    user = db.query(User).filter(User.email == user_in.email).first()
    
    if not user or not verify_password(user_in.password, user.hashed_password):
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid credentials"
        )
    
    if not user.is_active:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="User account is inactive"
        )
    
    # Create token
    access_token = create_access_token(
        data={"sub": user.email}
    )
    
    return {
        "access_token": access_token,
        "token_type": "bearer",
        "user": UserResponse.from_orm(user)
    }