#!/usr/bin/env node
/**
 * Bump the app version one step: 0.1.7 -> 0.1.8, and 0.1.9 -> 0.2.0 — the
 * patch digit never reaches two digits (the working rule is one bump per
 * task; see AGENTS.md).
 *
 *   npm run version:bump            # one step up, prints old -> new
 *   npm run version:bump -- 0.3.0   # set an explicit version
 *
 * The version is baked into the build (lib/version.ts) and shown in Settings
 * next to the running commit.
 */
import { readFileSync, writeFileSync } from "node:fs";
import path from "node:path";

const file = path.join(import.meta.dirname, "..", "package.json");
const raw = readFileSync(file, "utf8");
const current = JSON.parse(raw).version;

const explicit = process.argv[2];
let next = explicit;

if (!next) {
  const match = /^(\d+)\.(\d+)\.(\d+)$/.exec(current);
  if (!match) {
    console.error(`package.json version "${current}" is not x.y.z — pass one explicitly`);
    process.exit(1);
  }
  const major = Number(match[1]);
  const minor = Number(match[2]);
  const patch = Number(match[3]);
  next = patch >= 9 ? `${major}.${minor + 1}.0` : `${major}.${minor}.${patch + 1}`;
}

if (!/^\d+\.\d+\.\d+$/.test(next)) {
  console.error(`"${next}" is not a valid x.y.z version`);
  process.exit(1);
}

writeFileSync(file, raw.replace(`"version": "${current}"`, `"version": "${next}"`));
console.log(`${current} -> ${next}`);