"""Dashboard aggregation endpoint (fleet-wide cockpit data)."""
from __future__ import annotations

import logging
import traceback

from fastapi import APIRouter, Depends, HTTPException
from sqlmodel import Session

from auth import get_current_user
from database import get_session
from models.user import User
from services import dashboard_service

logger = logging.getLogger("stackpilot.dashboard")

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


@router.get("/fleet")
async def fleet(
    refresh: bool = False,
    session: Session = Depends(get_session),
    _user: User = Depends(get_current_user),
) -> dict:
    """Fleet-wide 'needs attention' list, KPIs and per-host rollup across the
    the host — the data behind the operator cockpit."""
    try:
        return await dashboard_service.compute_fleet(session, refresh=refresh)
    except Exception as exc:  # noqa: BLE001 — surface the real cause for diagnosis
        logger.exception("compute_fleet failed")
        # Deepest frame pinpoints where it broke; safe to expose to the
        # authenticated user and it makes the dashboard error banner actionable.
        tb = traceback.extract_tb(exc.__traceback__)
        where = f" at {tb[-1].filename.split('/')[-1]}:{tb[-1].lineno}" if tb else ""
        raise HTTPException(
            status_code=500,
            detail=f"{type(exc).__name__}: {exc}{where}",
        ) from exc