/**
 * Patch: fix hardcoded defaultChecked handles in AP reader compose controller.
 *
 * Root cause:
 *   composeController() in compose.js sets target.defaultChecked using a
 *   hardcoded name comparison:
 *
 *     target.defaultChecked = name === "@rick@rmendes.net" || name === "@rmendes.net";
 *
 *   These are the original developer's handles and will never match any target
 *   on this installation. As a result, ALL syndication checkboxes in the AP
 *   reader compose form are rendered unchecked, so replies composed through the
 *   AP reader are never syndicated to ActivityPub.
 *
 * Fix:
 *   Replace the hardcoded comparison with `target.checked === true`.
 *   The Micropub config endpoint (q=config) already returns each syndicator's
 *   `checked` state. The AP syndicator has `checked: true` in indiekit.config.mjs,
 *   so the AP checkbox will be pre-checked by default, matching the same behaviour
 *   as the microsub reader compose form.
 */

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

const MARKER = "// [patch] ap-compose-default-checked";

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

const OLD_SNIPPET = `      // Default-check only AP (Fedify) and Bluesky targets
      // "@rick@rmendes.net" = AP Fedify, "@rmendes.net" = Bluesky
      for (const target of syndicationTargets) {
        const name = target.name || "";
        target.defaultChecked = name === "@rick@rmendes.net" || name === "@rmendes.net";
      }`;

const NEW_SNIPPET = `      // Pre-check syndication targets based on their configured checked state ${MARKER}
      for (const target of syndicationTargets) { ${MARKER}
        target.defaultChecked = target.checked === true; ${MARKER}
      } ${MARKER}`;

async function exists(filePath) {
  try {
    await access(filePath);
    return true;
  } catch {
    return false;
  }
}

let checked = 0;
let patched = 0;

for (const filePath of candidates) {
  if (!(await exists(filePath))) continue;
  checked += 1;

  const source = await readFile(filePath, "utf8");

  if (source.includes(MARKER)) {
    console.log(`[postinstall] patch-ap-compose-default-checked: already applied to ${filePath}`);
    continue;
  }

  if (!source.includes(OLD_SNIPPET)) {
    console.warn(`[postinstall] patch-ap-compose-default-checked: target snippet not found in ${filePath}`);
    continue;
  }

  const updated = source.replace(OLD_SNIPPET, NEW_SNIPPET);

  if (updated === source) {
    console.log(`[postinstall] patch-ap-compose-default-checked: no changes in ${filePath}`);
    continue;
  }

  await writeFile(filePath, updated, "utf8");
  patched += 1;
  console.log(`[postinstall] Applied patch-ap-compose-default-checked to ${filePath}`);
}

if (checked === 0) {
  console.log("[postinstall] patch-ap-compose-default-checked: no target files found");
} else if (patched === 0) {
  console.log("[postinstall] patch-ap-compose-default-checked: already up to date");
} else {
  console.log(`[postinstall] patch-ap-compose-default-checked: patched ${patched} file(s)`);
}