installer.js

var exec = require('child_process').exec;
var fs = require('fs');
packageoriginal = require('path').join(__dirname, 'package.json');
packagesqlite3 = require('path').join(__dirname, 'package_sqlite3.json');
packagefs = require('path').join(__dirname, 'package_filesession.json');


if (process.platform == 'win32') {
  //#################################################################################################
  console.log('This will try to install the application for you.');
  console.log('This includes installing node-windows if not already installed. Linking directories for this and running npm install to install dependencies.');
  console.log('The end result is a service running with this program.');
  console.log('------------------------------------------------------');
  console.log('Checking to see if node-windows is installed');
  exec('npm list -g node-windows', null, function(error, stdout, stderr) {

    if (stdout.toString().indexOf('empty') !== -1) {
      console.log('node-windows is not installed globally.');

      // Install node-windows if it's not installed.
      console.log('Running "npm install -g node-windows');
      exec('npm install -g node-windows', null, function(error, stdout, stderr) {
        console.log('------------------------------------------------------');
        console.log('Running "npm link node-windows"');
        exec('npm link node-windows', null, function(error, stdout, stderr) {
          console.log(stdout);
          console.log('Linked node-windows with current directory.');
          console.log('------------------------------------------------------');
          console.log('Trying to installing required modules');

          console.log('Renaming package_sqlite3.json to package.json before continuing');
          fs.rename(packagesqlite3, packageoriginal, function(err) {
            console.log('Running "npm install"');
            exec('npm install', null, function(error, stdout, stderr) {
              console.log(stdout);
              console.log('Installed the dependencies for the application');
              console.log('------------------------------------------------------');
              console.log('Creating service. This will need elevated permissions but that will be asked for when needed.');

              var Service = require('node-windows').Service;
              // Create a new service object
              var svc = new Service({
                name: 'TellstickNode',
                description: 'The TellstickNode Service.',
                script: require('path').join(__dirname, 'TellstickNode.js')
              });

              // Listen for the "install" event, which indicates the
              // process is available as a service.
              svc.on('install', function() {
                svc.start();
              });

              svc.install();
              console.log('Installed the service');
              console.log('The service should be started automatically. Otherwise you can start it by going into services and start the "TellstickNode" service. If there is an error, check in the daemon folder.');
              console.log('Check if you can reach the application on the predefined address: http://127.0.0.1:8888');
              fs.renameSync(packageoriginal, packagesqlite3);

            });
          });
        });
      });
    } else {
      console.log('node-windows is already installed. No need to install it twice.');
      console.log('Running "npm link node-windows"');
      exec('npm link node-windows', null, function(error, stdout, stderr) {
        console.log(stdout);
        console.log('------------------------------------------------------');
        console.log('Trying to installing required modules');
        console.log('Renaming package_sqlite3.json to package.json before continuing');
        fs.rename(packagesqlite3, packageoriginal, function(err) {
          console.log(err);

          console.log('Running "npm install"');
          exec('npm install', null, function(error, stdout, stderr) {
            console.log(stdout);
            console.log('Installed the dependencies for the application');
            console.log('------------------------------------------------------');
            console.log('Creating service. This will need elevated permissions but that will be asked for when needed.');

            var Service = require('node-windows').Service;
            // Create a new service object
            var svc = new Service({
              name: 'TellstickNode',
              description: 'The TellstickNode Service.',
              script: require('path').join(__dirname, 'TellstickNode.js')
            });

            // Listen for the "install" event, which indicates the
            // process is available as a service.
            svc.on('install', function() {
              svc.start();
            });

            svc.install();
            console.log('Installed the service');
            console.log('The service should be started automatically. Otherwise you can start it by going into services and start the "TellstickNode" service. If there is an error, check in the daemon folder.');
            console.log('Check if you can reach the application on the predefined address: http://127.0.0.1:8888');
            fs.renameSync(packageoriginal, packagesqlite3);

          });
        });

      });
    }
  });
  //#################################################################################################
} else {
  console.log('This will try to install the application for you.');
  console.log('This includes installing forever and forever-service and running npm install to install dependencies.');
  console.log('The end result is a service running with this program.');

  // if using an arm processor, stick with filesessionstorage because of issue installing sqlite3 on raspberrypi.
  if (process.arch == 'arm') {
    console.log('Platform is arm architecture. Lets use filesession.');
    fs.renameSync(packagefs, packageoriginal);
  } else {
    console.log('Platform is not arm architecture. Lets use sqlite3.');
    fs.renameSync(packagesqlite3, packageoriginal);
  }

  console.log('Starting installation of dependencies');
  exec('npm install', null, function(error, stdout, stderr) {
    console.log(stderr);
    console.log('Starting installation of forever');
    exec('sudo npm install -g forever', null, function(error, stdout, stderr) {
      console.log(stderr);
      console.log('Done. Forever has been installed.');
      console.log('I recommend you to create a Cron job with the following: ');
      console.log("PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin");
      console.log("@reboot /usr/local/bin/forever -a -l " + __dirname + "/forever.log -o " + __dirname + "/tellsticknode_out.log -e " + __dirname + "/tellsticknode_error.log start " + __dirname + "/TellstickNode.js > " + __dirname + "/cron1.log 2>" + __dirname + "/cron2.log");
      /*
      console.log('Starting installation of forever-service');
      exec('sudo npm install -g forever-service', null, function (error,stdout,stderr) {
          console.log(stderr);
          console.log('Setting up the service');
          exec('sudo forever-service install tellsticknode --script TellstickNode.js',null, function (error,stdout,stderr) {
              console.log(stderr);
              console.log(stdout);
              console.log('Done');
              if(process.arch == 'arm'){
                  fs.renameSync(packageoriginal, packagefs);
              } else {
                  fs.renameSync(packageoriginal, packagesqlite3);
              }
          });

      });
      */

    });

  });
}