"""Vikunja tasks router."""

from __future__ import annotations

import logging
from typing import Any, Dict

from fastapi import APIRouter
from pydantic import BaseModel

from server.cache import cache
from server.config import get_settings
from server.services.vikunja_service import fetch_tasks, toggle_task_done

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/api", tags=["tasks"])

CACHE_KEY = "tasks"


@router.get("/tasks")
async def get_tasks() -> Dict[str, Any]:
    """Return Vikunja task data."""

    cached = await cache.get(CACHE_KEY)
    if cached is not None:
        return cached

    try:
        data: Dict[str, Any] = await fetch_tasks(
            get_settings().vikunja_url,
            get_settings().vikunja_token,
        )
    except Exception as exc:
        logger.exception("Failed to fetch Vikunja tasks")
        return {"error": True, "message": str(exc)}

    await cache.set(CACHE_KEY, data, get_settings().vikunja_cache_ttl)
    return data


class TaskToggleRequest(BaseModel):
    task_id: int
    done: bool


@router.post("/tasks/toggle")
async def toggle_task(body: TaskToggleRequest) -> Dict[str, Any]:
    """Toggle a Vikunja task's done state."""
    settings = get_settings()
    result = await toggle_task_done(
        settings.vikunja_url,
        settings.vikunja_token,
        body.task_id,
        body.done,
    )

    if result.get("ok"):
        # Invalidate cache so next fetch reflects the change
        await cache.invalidate(CACHE_KEY)
        logger.info("[TASKS] task/%d → done=%s ✓", body.task_id, body.done)

    return result