#!/usr/bin/env node
'use strict';

/**
 * Build CSP-safe static protobuf for the RdClient viewer (no runtime codegen / eval).
 */
const fs = require('fs');
const path = require('path');
const { spawnSync } = require('child_process');

const root = path.join(__dirname, '..');
const pbjs = path.join(root, 'node_modules', 'protobufjs-cli', 'bin', 'pbjs');
const outDir = path.join(root, 'public', 'js', 'rdclient', 'generated');
const rawPath = path.join(outDir, 'protos-static.raw.js');
const outPath = path.join(outDir, 'protos-static.js');
const jsonOut = path.join(root, 'public', 'protos', 'bundle.json');
const protos = [
    path.join(root, 'protos', 'rendezvous.proto'),
    path.join(root, 'protos', 'message.proto'),
];

fs.mkdirSync(outDir, { recursive: true });
fs.mkdirSync(path.dirname(jsonOut), { recursive: true });

function runPbjs(args) {
    const r = spawnSync(process.execPath, [pbjs, ...args], { cwd: root, encoding: 'utf8' });
    if (r.status !== 0) {
        process.stderr.write(r.stderr || r.stdout || 'pbjs failed\n');
        process.exit(r.status || 1);
    }
}

runPbjs(['-t', 'json', '-o', jsonOut, ...protos]);
runPbjs(['-t', 'static', '-o', rawPath, ...protos]);

const body = fs.readFileSync(rawPath, 'utf8');
const wrapped = `/* Generated by scripts/build-rdclient-protos.js - do not edit by hand. */
(function (global) {
    'use strict';
    var $protobuf = global.protobuf;
    if (!$protobuf) {
        throw new Error('BetterDeskProtos requires global protobuf (load vendor/protobuf.min.js first)');
    }
${body}
    global.BetterDeskProtos = $root;
})(typeof window !== 'undefined' ? window : globalThis);
`;
fs.writeFileSync(outPath, wrapped, 'utf8');
fs.unlinkSync(rawPath);
console.log('Wrote', path.relative(root, outPath), `(${fs.statSync(outPath).size} bytes)`);
console.log('Wrote', path.relative(root, jsonOut), `(${fs.statSync(jsonOut).size} bytes)`);