import { request } from './client';

/** Живые метрики инстанса для дашборда в настройках (AGENT.md 7.19). */
export interface InstanceMetrics {
  cpu: {
    /** Загрузка в процентах от доступного времени (лимит контейнера или ядра). */
    percent: number;
    cores: number;
    source: 'cgroup' | 'host' | '';
  };
  memory: {
    used_bytes: number;
    total_bytes: number;
    percent: number;
    source: 'cgroup' | 'host' | '';
  };
  disk: {
    used_bytes: number;
    total_bytes: number;
    free_bytes: number;
  };
  database: {
    bytes: number;
    wal_bytes: number;
  };
  checks: InstanceCheck[];
  health: 'ok' | 'warn' | 'failed';
  uptime_seconds: number;
  version: string;
  commit: string;
  collected_at: string;
}

export interface InstanceCheck {
  name: string;
  status: 'ok' | 'warn' | 'failed' | 'off';
  message?: string;
}

export const metricsQueryKey = ['instance', 'metrics'] as const;

export async function fetchInstanceMetrics(signal?: AbortSignal): Promise<InstanceMetrics> {
  const payload = await request<{ metrics: InstanceMetrics }>(
    '/instance/metrics',
    signal === undefined ? {} : { signal },
  );
  return payload.metrics;
}