import { readFile, writeFile } from "node:fs/promises";

// Extend the AP syndicator checkin guard to cover both `location` and
// `checkin` properties. The upstream package only checks `location`; a
// checkin coming in without coordinates (no `location` property) would slip
// through. This patch makes both cases explicit.

const candidates = [
  "node_modules/@rmdes/indiekit-endpoint-activitypub/lib/syndicator.js",
];

const oldSnippet = `      // Skip location checkins — they have a JF2 \`location\` property.
      if (properties.location) {
        console.info(\`[ActivityPub] Skipping syndication for location checkin: \${properties.url}\`);
        return undefined;
      }`;

const newSnippet = `      // Skip location checkins — they have a JF2 \`location\` or \`checkin\` property.
      if (properties.location || properties.checkin) {
        console.info(\`[ActivityPub] Skipping syndication for location checkin: \${properties.url}\`);
        return undefined;
      }`;

for (const filePath of candidates) {
  let source;
  try {
    source = await readFile(filePath, "utf8");
  } catch {
    console.log(`[postinstall] patch-ap-syndicator-checkin-guard: ${filePath} not found, skipping`);
    continue;
  }

  if (source.includes("properties.checkin")) {
    console.log("[postinstall] patch-ap-syndicator-checkin-guard: already patched");
    continue;
  }

  if (!source.includes(oldSnippet)) {
    console.log("[postinstall] patch-ap-syndicator-checkin-guard: target snippet not found, skipping");
    continue;
  }

  await writeFile(filePath, source.replace(oldSnippet, newSnippet), "utf8");
  console.log("[postinstall] patch-ap-syndicator-checkin-guard: patched syndicator.js");
}