"""Unraid servers status router."""

from __future__ import annotations

import logging
from typing import Any, Dict, List

from fastapi import APIRouter

from server.cache import cache
from server.config import settings
from server.services.unraid_service import ServerConfig, fetch_all_servers

logger = logging.getLogger(__name__)

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

CACHE_KEY = "servers"


@router.get("/servers")
async def get_servers() -> Dict[str, Any]:
    """Return status information for all configured Unraid servers.

    Response shape::

        {
            "servers": [ ... server dicts ... ]
        }
    """

    # --- cache hit? -----------------------------------------------------------
    cached = await cache.get(CACHE_KEY)
    if cached is not None:
        return cached

    # --- cache miss -----------------------------------------------------------
    server_configs: List[ServerConfig] = [
        ServerConfig(
            name=srv.name,
            host=srv.host,
            api_key=srv.api_key,
            port=srv.port,
        )
        for srv in settings.unraid_servers
    ]

    servers_data: List[Dict[str, Any]] = []
    try:
        servers_data = await fetch_all_servers(server_configs)
    except Exception as exc:
        logger.exception("Failed to fetch Unraid server data")
        return {
            "servers": [],
            "error": True,
            "message": str(exc),
        }

    payload: Dict[str, Any] = {
        "servers": servers_data,
    }

    await cache.set(CACHE_KEY, payload, settings.unraid_cache_ttl)
    return payload