"""Coordination to-do items router."""

from uuid import UUID

from fastapi import APIRouter, Depends, Query, status
from sqlalchemy.orm import Session

from api.database import get_db
from api.schemas.coord_todo import CoordTodoCreate, CoordTodoResponse, CoordTodoUpdate
from api.services import coord_todo_service

router = APIRouter()


@router.get("", response_model=list[CoordTodoResponse], status_code=status.HTTP_200_OK)
def list_todos(
    project_key: str | None = Query(default=None),
    assigned_to_user: str | None = Query(default=None),
    assigned_to_machine: str | None = Query(default=None),
    for_user: str | None = Query(default=None, description="Return items for this user OR unassigned"),
    for_machine: str | None = Query(default=None, description="Return items for this machine OR any machine"),
    status_filter: str = Query(default="pending"),
    include_subtasks: bool = Query(default=True),
    skip: int = Query(default=0, ge=0),
    limit: int = Query(default=100, ge=1, le=1000),
    db: Session = Depends(get_db),
):
    """List to-do items with optional filters. Pass status_filter=all to include every status."""
    todos = coord_todo_service.get_todos(
        db,
        project_key=project_key,
        assigned_to_user=assigned_to_user,
        assigned_to_machine=assigned_to_machine,
        for_user=for_user,
        for_machine=for_machine,
        status_filter=status_filter,
        include_subtasks=include_subtasks,
        skip=skip,
        limit=limit,
    )
    return [CoordTodoResponse.model_validate(t) for t in todos]


@router.post("", response_model=CoordTodoResponse, status_code=status.HTTP_201_CREATED)
def create_todo(
    data: CoordTodoCreate,
    db: Session = Depends(get_db),
):
    """Create a new to-do item."""
    todo = coord_todo_service.create_todo(db, data)
    return CoordTodoResponse.model_validate(todo)


@router.get("/{todo_id}", response_model=CoordTodoResponse, status_code=status.HTTP_200_OK)
def get_todo(
    todo_id: UUID,
    db: Session = Depends(get_db),
):
    """Get a single to-do item including its sub-tasks."""
    todo = coord_todo_service.get_todo_by_id(db, todo_id)
    return CoordTodoResponse.model_validate(todo)


@router.put("/{todo_id}", response_model=CoordTodoResponse, status_code=status.HTTP_200_OK)
def update_todo(
    todo_id: UUID,
    data: CoordTodoUpdate,
    db: Session = Depends(get_db),
):
    """Update a to-do item. Setting status to 'done' records completed_at automatically."""
    todo = coord_todo_service.update_todo(db, todo_id, data)
    return CoordTodoResponse.model_validate(todo)


@router.delete("/{todo_id}", response_model=dict, status_code=status.HTTP_200_OK)
def delete_todo(
    todo_id: UUID,
    db: Session = Depends(get_db),
):
    """Delete a to-do item and all its sub-tasks."""
    return coord_todo_service.delete_todo(db, todo_id)