"""Authentication router"""
from datetime import timedelta
from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordRequestForm
from sqlalchemy.orm import Session

from app.core.auth import create_access_token, get_current_user, verify_password, ACCESS_TOKEN_EXPIRE_MINUTES
from app.database import get_db
from app.models.user import User
from app.schemas.token import Token
from app.schemas.user import User as UserSchema

router = APIRouter()

@router.post("/token", response_model=Token)
def login_for_access_token(
    form_data: OAuth2PasswordRequestForm = Depends(),
    db: Session = Depends(get_db)
):
    user = db.query(User).filter(User.email == form_data.username).first()
    if not user or not verify_password(form_data.password, user.hashed_password):
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect username or password",
            headers={"WWW-Authenticate": "Bearer"},
        )
    
    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
    access_token = create_access_token(
        data={"sub": user.email}, expires_delta=access_token_expires
    )
    return {"access_token": access_token, "token_type": "bearer"}

@router.get("/me", response_model=UserSchema)
def read_users_me(current_user: User = Depends(get_current_user)):
    return current_user