#!/usr/bin/env node
/*
 Build + commit (+ optional push) helper.

 - Runs the existing build (`npm run build`)
 - Stages generated assets (icons by default; optionally dist with INCLUDE_DIST=true)
 - Commits with a conventional message including the package version
 - If `--push` or `PUSH=true`, pushes to the current branch's upstream

 Notes:
 - Respects .gitignore (dist is ignored unless INCLUDE_DIST=true)
 - Safe no-op when there is nothing to commit
*/

const fs = require('fs');
const path = require('path');
const { spawnSync } = require('child_process');

const REPO = path.join(__dirname, '..');
const PKG_PATH = path.join(REPO, 'package.json');

function run(cmd, args, opts = {}) {
  const res = spawnSync(cmd, args, { stdio: 'inherit', ...opts });
  if (res.error) throw res.error;
  return res.status || 0;
}

function runOut(cmd, args, opts = {}) {
  const res = spawnSync(cmd, args, { encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'], ...opts });
  if (res.error) throw res.error;
  return { code: res.status || 0, out: (res.stdout || '').trim(), err: (res.stderr || '').trim() };
}

function ensureGit() {
  const { code } = runOut('git', ['--version']);
  if (code !== 0) {
    console.error('git not found in PATH');
    process.exit(1);
  }
}

function pkgVersion() {
  const pkg = JSON.parse(fs.readFileSync(PKG_PATH, 'utf8'));
  return pkg.version || '0.0.0';
}

function main() {
  ensureGit();

  // 1) Build (icons + xpi)
  console.log('• Running build…');
  const codeBuild = run('npm', ['run', 'build'], { cwd: REPO });
  if (codeBuild !== 0) process.exit(codeBuild);

  // 2) Stage generated assets
  const includeDist = String(process.env.INCLUDE_DIST || '').toLowerCase() === 'true';
  console.log('• Staging generated assets…');
  // Always stage icons (tracked or untracked)
  run('git', ['add', 'icons/icon-*.png'], { cwd: REPO });
  if (includeDist) {
    // dist is ignored; force add if requested
    run('git', ['add', '-f', 'dist'], { cwd: REPO });
  }

  // 3) Check if anything is staged
  const { out: staged } = runOut('git', ['diff', '--cached', '--name-only'], { cwd: REPO });
  if (!staged) {
    console.log('✓ Nothing to commit. Up to date.');
    return;
  }

  // 4) Commit
  const version = pkgVersion();
  const msg = `chore(build): update generated assets (v${version})`;
  console.log(`• Committing: ${msg}`);
  const codeCommit = run('git', ['commit', '-m', msg], { cwd: REPO });
  if (codeCommit !== 0) process.exit(codeCommit);

  // 5) Optional push
  const shouldPush = process.argv.includes('--push') || String(process.env.PUSH || '').toLowerCase() === 'true';
  if (!shouldPush) {
    console.log('✓ Commit created. Skipping push (enable with --push or PUSH=true).');
    return;
  }

  console.log('• Pushing to upstream…');
  // If upstream exists, push; else set upstream to origin/<branch>
  const { code: upCode } = runOut('git', ['rev-parse', '--abbrev-ref', '--symbolic-full-name', '@{u}'], { cwd: REPO });
  if (upCode === 0) {
    const codePush = run('git', ['push'], { cwd: REPO });
    if (codePush !== 0) process.exit(codePush);
  } else {
    const { out: branch } = runOut('git', ['rev-parse', '--abbrev-ref', 'HEAD'], { cwd: REPO });
    const codePush = run('git', ['push', '-u', 'origin', branch], { cwd: REPO });
    if (codePush !== 0) process.exit(codePush);
  }
  console.log('✓ Pushed.');
}

main();