feat: desktop app auto updates with automatic, ask first or never modes

scripts/fix-update-info.cjs

@@ -0,0 +1,60 @@
+#!/usr/bin/env node
+/**
+ * Fixes electron-builder's update files (latest.yml and friends) after the
+ * build, so the desktop updater gets the right download:
+ *
+ *   --drop <text>       remove entries whose file name contains text
+ *                       (the ia32 installer, the universal mac zip)
+ *   --rename <old=new>  follow an artifact the workflow renamed
+ *
+ * Usage: node scripts/fix-update-info.cjs [--drop x] [--rename a=b] files...
+ */
+
+const fs = require("node:fs");
+const yaml = require("js-yaml");
+
+function fixUpdateInfo(info, { drop = [], rename = {} } = {}) {
+  const rewrite = (name) => rename[name] ?? name;
+  const files = (info.files ?? [])
+    .filter((file) => !drop.some((text) => file.url.includes(text)))
+    .map((file) => ({ ...file, url: rewrite(file.url) }));
+  if (files.length === 0) {
+    throw new Error("no files left in update info");
+  }
+  return { ...info, files, path: files[0].url, sha512: files[0].sha512 };
+}
+
+function parseArgs(argv) {
+  const options = { drop: [], rename: {}, files: [] };
+  for (let i = 0; i < argv.length; i++) {
+    const arg = argv[i];
+    if (arg === "--drop") options.drop.push(argv[++i]);
+    else if (arg === "--rename") {
+      const [from, to] = String(argv[++i]).split("=");
+      if (!from || !to) throw new Error(`bad --rename ${argv[i]}`);
+      options.rename[from] = to;
+    } else options.files.push(arg);
+  }
+  return options;
+}
+
+function main() {
+  const options = parseArgs(process.argv.slice(2));
+  for (const file of options.files) {
+    if (!fs.existsSync(file)) continue;
+    const info = yaml.load(fs.readFileSync(file, "utf8"));
+    fs.writeFileSync(file, yaml.dump(fixUpdateInfo(info, options)));
+    console.log(`Fixed ${file}`);
+  }
+}
+
+if (require.main === module) {
+  try {
+    main();
+  } catch (error) {
+    console.error(error.message);
+    process.exit(1);
+  }
+}
+
+module.exports = { fixUpdateInfo, parseArgs };