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

from app.api import deps
from app.schemas.todo import Todo, TodoCreate, TodoUpdate
from app.models.todo import Todo as TodoModel
from app.crud.todo import todo

router = APIRouter()

@router.get("/", response_model=List[Todo])
def read_todos(
    db: Session = Depends(deps.get_db),
    skip: int = 0,
    limit: int = 100,
):
    """
    Retrieve todos.
    """
    return todo.get_multi(db, skip=skip, limit=limit)

@router.post("/", response_model=Todo)
def create_todo(
    *,
    db: Session = Depends(deps.get_db),
    todo_in: TodoCreate,
):
    """
    Create new todo.
    """
    return todo.create(db=db, obj_in=todo_in)

@router.put("/{id}", response_model=Todo)
def update_todo(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
    todo_in: TodoUpdate,
):
    """
    Update a todo.
    """
    todo_current = todo.get(db=db, id=id)
    if not todo_current:
        raise HTTPException(status_code=404, detail="Todo not found")
    return todo.update(db=db, db_obj=todo_current, obj_in=todo_in)

@router.get("/{id}", response_model=Todo)
def read_todo(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
):
    """
    Get todo by ID.
    """
    todo_current = todo.get(db=db, id=id)
    if not todo_current:
        raise HTTPException(status_code=404, detail="Todo not found")
    return todo_current

@router.delete("/{id}", response_model=Todo)
def delete_todo(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
):
    """
    Delete todo.
    """
    todo_current = todo.get(db=db, id=id)
    if not todo_current:
        raise HTTPException(status_code=404, detail="Todo not found")
    return todo.remove(db=db, id=id)