"""
Router for Todo CRUD operations
"""

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

from app.core.database import get_db
from app.schemas.todo import Todo, TodoCreate, TodoUpdate
from app.services import todo as todo_service

router = APIRouter()


@router.get("/todos", response_model=list[Todo])
def get_todos(
    skip: int = 0, limit: int = 100, db: Session = Depends(get_db)
):
    """
    Get all todos with pagination
    """
    todos = todo_service.get_todos(db, skip=skip, limit=limit)
    return todos


@router.get("/todos/{todo_id}", response_model=Todo)
def get_todo(todo_id: int, db: Session = Depends(get_db)):
    """
    Get a single todo by ID
    """
    db_todo = todo_service.get_todo(db, todo_id=todo_id)
    if db_todo is None:
        raise HTTPException(
            status_code=404,
            detail=f"Todo with ID {todo_id} not found"
        )
    return db_todo


@router.post("/todos", response_model=Todo, status_code=status.HTTP_201_CREATED)
def create_todo(todo: TodoCreate, db: Session = Depends(get_db)):
    """
    Create a new todo
    """
    return todo_service.create_todo(db=db, todo=todo)


@router.put("/todos/{todo_id}", response_model=Todo)
def update_todo(
    todo_id: int, todo_update: TodoUpdate, db: Session = Depends(get_db)
):
    """
    Update an existing todo
    """
    db_todo = todo_service.update_todo(db, todo_id, todo_update)
    if db_todo is None:
        raise HTTPException(
            status_code=404,
            detail=f"Todo with ID {todo_id} not found"
        )
    return db_todo


@router.delete("/todos/{todo_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
def delete_todo(todo_id: int, db: Session = Depends(get_db)):
    """
    Delete a todo
    """
    success = todo_service.delete_todo(db, todo_id)
    if not success:
        raise HTTPException(
            status_code=404,
            detail=f"Todo with ID {todo_id} not found"
        )
    return Response(status_code=status.HTTP_204_NO_CONTENT)