update-system.mjs

#!/usr/bin/env node
/**
 * update-system.mjs — check/apply student-ops system updates.
 *
 * Commands:
 *   node update-system.mjs check      # JSON status
 *   node update-system.mjs apply      # pull latest system files, preserve user layer
 *   node update-system.mjs dismiss    # skip this version
 *   node update-system.mjs rollback   # undo last apply
 *
 * User layer (never touched):
 *   config/profile.yml, modes/_profile.md, portals.yml, data/*, reports/*,
 *   output/*, essays/*, aid-letters/*
 */
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const VERSION = path.join(__dirname, "VERSION");
const DISMISSED = path.join(__dirname, ".update-dismissed");

const cmd = process.argv[2] || "check";

function readVersion() {
  if (!fs.existsSync(VERSION)) return "0.0.0";
  return fs.readFileSync(VERSION, "utf8").trim();
}

async function check() {
  const local = readVersion();
  // TODO: wire up to GitHub releases / remote VERSION file
  // For now, return up-to-date.
  const result = { status: "up-to-date", local };
  if (fs.existsSync(DISMISSED)) {
    const dismissed = fs.readFileSync(DISMISSED, "utf8").trim();
    result.dismissed = dismissed;
  }
  console.log(JSON.stringify(result));
}

function dismiss() {
  fs.writeFileSync(DISMISSED, readVersion());
  console.log(JSON.stringify({ status: "dismissed", version: readVersion() }));
}

async function apply() {
  console.log(JSON.stringify({ status: "noop", message: "Update endpoint not yet wired. Update manually via git pull for now." }));
}

function rollback() {
  console.log(JSON.stringify({ status: "noop", message: "Rollback not yet implemented." }));
}

switch (cmd) {
  case "check": await check(); break;
  case "apply": await apply(); break;
  case "dismiss": dismiss(); break;
  case "rollback": rollback(); break;
  default:
    console.error(`Unknown command: ${cmd}`);
    process.exit(1);
}