const fs = require('fs');
const path = require('path');

const {
  buildLinuxLauncherScript,
  resolveLinuxLauncherNames
} = require('../dist/electron/app/linux-launcher.rules.js');

const LAUNCHER_MODE = 0o755;

function installLinuxLauncher(appOutDir, executableName) {
  const { launcherFileName, binaryFileName } = resolveLinuxLauncherNames(executableName);
  const launcherPath = path.join(appOutDir, launcherFileName);
  const binaryPath = path.join(appOutDir, binaryFileName);

  if (!fs.existsSync(binaryPath)) {
    fs.renameSync(launcherPath, binaryPath);
  }

  fs.writeFileSync(launcherPath, buildLinuxLauncherScript({ binaryFileName }), 'utf8');
  fs.chmodSync(launcherPath, LAUNCHER_MODE);

  return launcherFileName;
}

exports.default = async function afterPack(context) {
  if (context.electronPlatformName !== 'linux') {
    return;
  }

  const launcherFileName = installLinuxLauncher(context.appOutDir, context.packager.executableName);

  console.log(`  • linux launcher installed  file=${launcherFileName}`);
};