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

from typing import Any

from fable_mcp.client import FableClient


async def list_tasks(
    client: FableClient,
    *,
    limit: int = 20,
    offset: int = 0,
    status: str | None = None,
    project_id: int | None = None,
) -> dict[str, Any]:
    """List tasks with optional filtering."""
    params: dict[str, Any] = {"limit": limit, "offset": offset}
    if status:
        params["status"] = status
    if project_id is not None:
        params["project_id"] = project_id
    return await client.get("/api/tasks", params=params)


async def get_task(client: FableClient, *, task_id: int) -> dict[str, Any]:
    """Fetch a single task by ID (includes parent_title)."""
    return await client.get(f"/api/tasks/{task_id}")


async def create_task(
    client: FableClient,
    *,
    title: str,
    body: str = "",
    status: str = "todo",
    priority: str | None = None,
    project_id: int | None = None,
    milestone_id: int | None = None,
    parent_id: int | None = None,
    tags: list[str] | None = None,
) -> dict[str, Any]:
    """Create a new task."""
    payload: dict[str, Any] = {"title": title, "body": body, "status": status}
    if priority is not None:
        payload["priority"] = priority
    if project_id is not None:
        payload["project_id"] = project_id
    if milestone_id is not None:
        payload["milestone_id"] = milestone_id
    if parent_id is not None:
        payload["parent_id"] = parent_id
    if tags is not None:
        payload["tags"] = tags
    return await client.post("/api/tasks", json=payload)


async def update_task(
    client: FableClient,
    *,
    task_id: int,
    title: str | None = None,
    body: str | None = None,
    status: str | None = None,
    priority: str | None = None,
    project_id: int | None = None,
    milestone_id: int | None = None,
) -> dict[str, Any]:
    """Update an existing task."""
    payload: dict[str, Any] = {}
    if title is not None:
        payload["title"] = title
    if body is not None:
        payload["body"] = body
    if status is not None:
        payload["status"] = status
    if priority is not None:
        payload["priority"] = priority
    if project_id is not None:
        payload["project_id"] = project_id
    if milestone_id is not None:
        payload["milestone_id"] = milestone_id
    return await client.patch(f"/api/tasks/{task_id}", json=payload)


async def add_task_log(
    client: FableClient,
    *,
    task_id: int,
    content: str,
) -> dict[str, Any]:
    """Append a log entry to a task."""
    return await client.post(f"/api/tasks/{task_id}/logs", json={"content": content})