/**
 * Patch: add Content-Type: application/json to store-github #client requests.
 *
 * The #client method only sets `accept` and `authorization` headers.
 * GitHub's API infers JSON from the body without Content-Type; Gitea's API
 * requires an explicit Content-Type: application/json header on POST/PUT
 * requests — without it the body is not parsed and Gitea returns 422
 * Unprocessable Entity.
 */

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

const TARGET = "node_modules/@indiekit/store-github/index.js";
const MARKER = "// [patch] store-github-content-type";

const OLD = `          accept: "application/vnd.github+json",
          authorization: \`token \${token}\`,`;

const NEW = `          accept: "application/vnd.github+json",
          authorization: \`token \${token}\`,
          "content-type": "application/json", ${MARKER}`;

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

if (!(await exists(TARGET))) {
  console.log(`[postinstall] store-github-content-type: target not found, skipping`);
  process.exit(0);
}

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

if (source.includes(MARKER)) {
  console.log("[postinstall] store-github-content-type: already patched");
  process.exit(0);
}

if (!source.includes(OLD)) {
  console.warn("[postinstall] store-github-content-type: snippet not found — skipping");
  process.exit(0);
}

await writeFile(TARGET, source.replace(OLD, NEW), "utf8");
console.log(`[postinstall] store-github-content-type: patched ${TARGET}`);