// Append-only one-line-per-delivery log of webhook activity. Lives at
// /data/webhook.log so it's persistent across container restarts and
// readable from `gs logs`. Best-effort writes — if the disk is full or
// the file is locked, we don't crash the webhook handler.

import { appendFileSync } from 'node:fs';

const LOG_PATH = process.env.GS_WEBHOOK_LOG ?? '/data/webhook.log';

export interface WebhookLogEntry {
  siteSlug: string;
  action: 'sync' | 'delete' | 'ignore' | 'rejected';
  postId?: string;
  slug?: string;
  status: 'ok' | 'failed' | 'ignored' | 'rejected';
  atUri?: string;
  error?: string;
  reason?: string;
}

export function logWebhookDelivery(entry: WebhookLogEntry): void {
  const line = JSON.stringify({ ts: new Date().toISOString(), ...entry }) + '\n';
  try {
    appendFileSync(LOG_PATH, line);
  } catch {
    // Best-effort; don't take the webhook down if logging fails.
  }
}