"""This module contains endpoints for operations related to users."""

from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session

from backend.database.engine import get_db
import backend.schemas.users as userschema
import backend.crud.users as usercrud
from backend.exceptions import NotFoundException


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

tag_metadata = {
    "name": "users",
    "description": "Operations related to users."
}


@router.post("/users/", response_model=userschema.User)
def create_user(user: userschema.UserCreate, db: Session = Depends(get_db)):
    existing_user = usercrud.read_user_by_email(db, email=user.email)
    if existing_user:
        raise HTTPException(400, "A user with this email address is already registered.")
    return usercrud.create_user(db=db, user=user)


@router.get("/users/{id}", response_model=userschema.User)
def read_user(id: int, db: Session = Depends(get_db)):
    try:
        return usercrud.read_user(db=db, id=id)
    except NotFoundException as e:
        raise HTTPException(404, str(e))


@router.get("/users/", response_model=list[userschema.User])
def read_users(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
    users = usercrud.read_users(db=db, skip=skip, limit=limit)
    return users


@router.patch("/users/{id}", response_model=userschema.User)
def update_user(id: int, user: userschema.UserUpdate, db: Session = Depends(get_db)):
    try:
        return usercrud.update_user(db=db, user=user, id=id)
    except NotFoundException as e:
        raise HTTPException(404, str(e))


@router.delete("/users/{id}", response_model=userschema.User)
def delete_user(id: int, db: Session = Depends(get_db)):
    try:
        return usercrud.delete_user(db=db, id=id)
    except NotFoundException as e:
        raise HTTPException(404, str(e))