#!/usr/bin/env node

import { copyFileSync, existsSync, mkdirSync } from 'fs';
import { execSync } from 'child_process';
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';
import { platform, arch } from 'os';

const __dirname = dirname(fileURLToPath(import.meta.url));
const projectRoot = join(__dirname, '..');
const repoRoot = join(projectRoot, '..', '..');

function isMusl() {
  if (platform() !== 'linux') return false;
  try {
    const result = execSync('ldd --version 2>&1 || true', { encoding: 'utf8' });
    return result.toLowerCase().includes('musl');
  } catch {
    return existsSync('/lib/ld-musl-x86_64.so.1') || existsSync('/lib/ld-musl-aarch64.so.1');
  }
}

const sourceExt = platform() === 'win32' ? '.exe' : '';
const sourcePath = join(repoRoot, `zig-out/bin/native${sourceExt}`);
const binDir = join(projectRoot, 'bin');

const osKey = platform() === 'linux' && isMusl() ? 'linux-musl' : platform();
const platformKey = `${osKey}-${arch()}`;
const ext = platform() === 'win32' ? '.exe' : '';
const targetName = `native-sdk-${platformKey}${ext}`;
const targetPath = join(binDir, targetName);

if (!existsSync(sourcePath)) {
  console.error(`Error: Native binary not found at ${sourcePath}`);
  console.error('Run "zig build" from the repo root first');
  process.exit(1);
}

if (!existsSync(binDir)) {
  mkdirSync(binDir, { recursive: true });
}

copyFileSync(sourcePath, targetPath);
console.log(`✓ Copied native binary to ${targetPath}`);