const path = require('path');

function envText(name) {
  const value = process.env[name];
  if (value == null) return '';
  return String(value).trim();
}

function envFlag(name) {
  return /^(1|true|yes|y|on)$/i.test(envText(name));
}

const pfxFile = envText('CHATLAB_PFX_FILE');
const pfxPassword = envText('CHATLAB_PFX_PASSWORD');
const publisherName = envText('CHATLAB_CERT_PUBLISHER_NAME');
const forceSigning = envFlag('CHATLAB_FORCE_SIGN');
const timestampServer = envText('CHATLAB_TIMESTAMP_SERVER') || 'http://timestamp.digicert.com';
const shouldSign = Boolean(pfxFile);
const buildLabel = envText('CHATLAB_BUILD_LABEL')
  || new Date().toISOString().replace(/[-:T]/g, '').slice(0, 12);

if (forceSigning && !shouldSign) {
  throw new Error('CHATLAB_FORCE_SIGN=1 requires CHATLAB_PFX_FILE to point to a .pfx/.p12 code signing certificate.');
}

if (pfxPassword) {
  process.env.WIN_CSC_KEY_PASSWORD = pfxPassword;
  process.env.CSC_KEY_PASSWORD = pfxPassword;
}

const win = {
  target: 'nsis',
  icon: 'build/icon.ico',
  artifactName: `ChatLab-Setup-\${version}-${buildLabel}.\${ext}`,
  signAndEditExecutable: shouldSign,
  forceCodeSigning: forceSigning,
};

if (publisherName) {
  win.publisherName = publisherName;
}

if (shouldSign) {
  win.signtoolOptions = {
    certificateFile: pfxFile,
    signingHashAlgorithms: ['sha256'],
    rfc3161TimeStampServer: timestampServer,
  };

  if (publisherName) {
    win.signtoolOptions.publisherName = publisherName;
  }
}

module.exports = {
  appId: 'com.chatlab.desktop',
  productName: 'ChatLab售后智能助手',
  icon: 'build/icon.ico',
  directories: {
    output: 'dist',
  },
  files: [
    'main.js',
    'preload.js',
    'index.html',
    'build/company-logo.jpg',
    'build/icon.ico',
    'build/icon.png',
    'package.json',
  ],
  extraResources: [
    {
      from: path.join(__dirname, 'build-resources'),
      to: '.',
      filter: [
        '**/*',
        '!**/.env',
        '!**/knowledge*.db',
        '!**/__pycache__/**',
        '!**/*.pfx',
        '!**/*.p12',
        '!**/*.pvk',
        '!**/*.cer',
        '!**/*.crt',
        '!**/*.key',
        '!**/certs/**',
      ],
    },
  ],
  win,
  nsis: {
    oneClick: false,
    installerIcon: 'build/icon.ico',
    uninstallerIcon: 'build/icon.ico',
    allowToChangeInstallationDirectory: true,
    perMachine: false,
    createDesktopShortcut: true,
    createStartMenuShortcut: true,
    shortcutName: 'ChatLab售后智能助手',
  },
};