"""MCP tools for Fable milestones."""
from __future__ import annotations

from typing import Any

from fable_mcp.client import FableClient


async def list_milestones(client: FableClient, *, project_id: int) -> dict[str, Any]:
    """List milestones for a project."""
    return await client.get(f"/api/projects/{project_id}/milestones")


async def create_milestone(
    client: FableClient,
    *,
    project_id: int,
    title: str,
    description: str = "",
    status: str = "active",
) -> dict[str, Any]:
    """Create a milestone within a project."""
    payload: dict[str, Any] = {
        "title": title,
        "description": description,
        "status": status,
    }
    return await client.post(f"/api/projects/{project_id}/milestones", json=payload)


async def update_milestone(
    client: FableClient,
    *,
    project_id: int,
    milestone_id: int,
    title: str | None = None,
    description: str | None = None,
    status: str | None = None,
    order_index: int | None = None,
) -> dict[str, Any]:
    """Update an existing milestone."""
    payload: dict[str, Any] = {}
    if title is not None:
        payload["title"] = title
    if description is not None:
        payload["description"] = description
    if status is not None:
        payload["status"] = status
    if order_index is not None:
        payload["order_index"] = order_index
    return await client.patch(
        f"/api/projects/{project_id}/milestones/{milestone_id}", json=payload
    )