#!/usr/bin/env node
// SPDX-FileCopyrightText: 2026 Alexander Bates <alex@bates64.com>
//
// SPDX-License-Identifier: 0BSD

// Lets electron-builder package Windows and macOS releases on Linux, by
// editing node_modules in place. Run it after `yarn install`. It fails if
// electron-builder has changed the code it edits, rather than leave a build
// that quietly does the wrong thing.

import { readFile, writeFile } from "node:fs/promises";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const modules = join(
  dirname(fileURLToPath(import.meta.url)),
  "..",
  "..",
  "node_modules",
);

const PATCHES = [
  {
    // The NSIS installer embeds an uninstaller it can only get by running a
    // first build of the installer, which electron-builder does under Wine
    // everywhere but macOS. Its macOS path reads it out of the installer
    // instead, and works anywhere.
    file: "app-builder-lib/dist/targets/win/nsis/NsisTarget.js",
    from: "if (isMacOsCatalina()) {",
    to: 'if (isMacOsCatalina() || process.platform === "linux") {',
  },
  {
    // Merging the two architectures' apps only needs lipo, which the cross
    // devshell provides, but @electron/universal refuses to try off macOS.
    file: "@electron/universal/dist/index.js",
    from: "if (process.platform !== 'darwin')\n        throw",
    to: "if (false)\n        throw",
  },
];

for (const { file, from, to } of PATCHES) {
  const path = join(modules, file);
  const source = await readFile(path, "utf8");
  if (source.includes(to)) continue;
  if (!source.includes(from)) {
    console.error(
      `${file} has changed, so it can't be patched for Linux; update this script.`,
    );
    process.exit(1);
  }
  await writeFile(path, source.replace(from, to));
  console.log(`Patched ${file}.`);
}