#!/usr/bin/env node
/**
 * SessionStart hook: make sure the glance daemon is running, then record the event.
 *
 * Note that as of Grok Build's current hook wiring this never actually runs: a plugin's
 * `SessionStart` entry is registered after `SessionStart` has already been dispatched, so the
 * event finds no plugin hooks to call. `ensureDaemon` in glance-lib.mjs has the details, and
 * bin/glance-record.mjs is what really boots the daemon.
 *
 * It stays wired anyway. It costs nothing when it does not fire, it is the correct hook for the
 * job on the day that ordering is fixed, and it keeps the answer to "what starts this thing"
 * in the obvious place.
 *
 * It always exits 0 — a monitoring dashboard must never be the reason a session fails to start.
 */

import {
  baseUrl,
  ensureDaemon,
  envEnvelope,
  hookHeaders,
  postJson,
  readConfig,
  readStdinJson,
} from "./glance-lib.mjs";

const payload = envEnvelope(await readStdinJson());
const cfg = readConfig();

try {
  // hooks/hooks.json allows this hook 20s; leave most of it as headroom.
  const up = await ensureDaemon(cfg, {
    waitMs: 8000,
    startedBy: "session-start-hook",
    onMissingBuild: (entry) => {
      // dist/ ships with the plugin, so this means an incomplete checkout. Say so once, on
      // stderr, where it is recorded but harmless — a hook must never fail a session.
      process.stderr.write(
        `[grok-glance] ${entry} is missing - run \`npm install && npm run build\` in the plugin root\n`,
      );
    },
  });
  if (up) {
    // hookHeaders() is read here, not at import time: on a first-ever run the daemon we just
    // spawned is what created hook.secret.
    await postJson(`${baseUrl(cfg)}/hook/record`, payload, 2500, hookHeaders());
  }
} catch {
  // Fail open, always.
}

process.exit(0);