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import type { SourceModule } from "../registry";
import {
  UptimeConfig,
  UptimePayload,
  type UptimeConfig as Config,
  type UptimePayload as Payload,
} from "@/lib/schemas/sources/uptime";

const TIMEOUT_MS = 8000;

async function ping(url: string, parentSignal?: AbortSignal): Promise<Payload["sites"][number]> {
  const target = /^https?:\/\//.test(url) ? url : `https://${url}`;
  const ctrl = new AbortController();
  const timer = setTimeout(() => ctrl.abort(), TIMEOUT_MS);
  const onAbort = () => ctrl.abort();
  parentSignal?.addEventListener("abort", onAbort);
  const started = Date.now();
  try {
    const res = await fetch(target, { method: "GET", redirect: "follow", signal: ctrl.signal });
    return { url, ok: res.ok, status: res.status, ms: Date.now() - started };
  } catch {
    return { url, ok: false, status: null, ms: null };
  } finally {
    clearTimeout(timer);
    parentSignal?.removeEventListener("abort", onAbort);
  }
}

export const uptimeModule: SourceModule<Config, Payload> = {
  kind: "uptime",
  label: "Uptime",
  keyless: true,
  defaultRefreshSeconds: 600,
  configSchema: UptimeConfig,
  payloadSchema: UptimePayload,

  isConfigured: (config) => config.urls.length > 0,

  async fetch({ config, signal }) {
    const sites = await Promise.all(config.urls.map((u) => ping(u.trim(), signal)));
    return { sites };
  },
};