var fs = require('fs');
var os = require('os');
var blessed = require('blessed');
var multiline = require('multiline');

if (os.platform() === 'win32') {
  console.log('**************************************************************');
  console.log('Hackathon Starter Generator has been disabled on Windows until');
  console.log('https://github.com/chjj/blessed is fixed or until I find a');
  console.log('better CLI module.');
  console.log('**************************************************************');
  process.exit();
}
var screen = blessed.screen({
  autoPadding: true
});

screen.key('q', function() {
  process.exit(0);
});

var home = blessed.list({
  parent: screen,
  padding: { top: 2 },
  mouse: true,
  keys: true,
  fg: 'white',
  bg: 'blue',
  selectedFg: 'blue',
  selectedBg: 'white',
  items: [
    '» REMOVE AUTHENTICATION PROVIDER',
    '» CHANGE EMAIL SERVICE',
    '» ADD NODE.JS CLUSTER SUPPORT',
    '» EXIT'
  ]
});

var homeTitle = blessed.text({
  parent: screen,
  align: 'center',
  fg: 'blue',
  bg: 'white',
  content: 'Hackathon Starter (c) 2014'
});

var footer = blessed.text({
  parent: screen,
  bottom: 0,
  fg: 'white',
  bg: 'blue',
  tags: true,
  content: ' {cyan-fg}<Up/Down>{/cyan-fg} moves |' +
    ' {cyan-fg}<Enter>{/cyan-fg} selects | {cyan-fg}<q>{/cyan-fg} exits'
});

var inner = blessed.form({
  top: 'center',
  left: 'center',
  mouse: true,
  keys: true,
  width: 33,
  height: 10,
  border: {
    type: 'line',
    fg: 'white',
    bg: 'red'
  },
  fg: 'white',
  bg: 'red'
});

var success = blessed.box({
  top: 'center',
  left: 'center',
  mouse: true,
  keys: true,
  tags: true,
  width: '50%',
  height: '40%',
  border: {
    type: 'line',
    fg: 'white',
    bg: 'green'
  },
  fg: 'white',
  bg: 'green',
  padding: 1
});

success.on('keypress', function() {
  home.focus();
  home.remove(success);
});

var clusterText = blessed.text({
  top: 'top',
  bg: 'red',
  fg: 'white',
  tags: true,
  content: 'Take advantage of multi-core systems' +
    ' using built-in {underline}cluster{/underline} module.'
});


var enable = blessed.button({
  parent: inner,
  bottom: 0,
  mouse: true,
  shrink: true,
  name: 'enable',
  content: ' ENABLE ',
  border: {
    type: 'line',
    fg: 'white',
    bg: 'red'
  },
  style: {
    fg: 'white',
    bg: 'red',
    focus: {
      fg: 'red',
      bg: 'white'
    }
  }
});


var disable = blessed.button({
  parent: inner,
  bottom: 0,
  left: 10,
  mouse: true,
  shrink: true,
  name: 'disable',
  content: ' DISABLE ',
  border: {
    type: 'line',
    fg: 'white',
    bg: 'red'
  },
  style: {
    fg: 'white',
    bg: 'red',
    focus: {
      fg: 'red',
      bg: 'white'
    }
  }
});

var cancel = blessed.button({
  parent: inner,
  bottom: 0,
  left: 21,
  mouse: true,
  shrink: true,
  name: 'cancel',
  content: ' CANCEL ',
  border: {
    type: 'line',
    fg: 'white',
    bg: 'red'
  },
  style: {
    fg: 'white',
    bg: 'red',
    focus: {
      fg: 'red',
      bg: 'white'
    }
  }
});

cancel.on('press', function() {
  home.focus();
  home.remove(inner);
  screen.render();

});

var authForm = blessed.form({
  mouse: true,
  keys: true,
  fg: 'white',
  bg: 'blue',
  padding: { left: 1, right: 1 }
});

authForm.on('submit', function() {
  var passportConfig = fs.readFileSync('config/passport.js')
    .toString().split(os.EOL);
  var loginTemplate = fs.readFileSync('views/account/login.jade')
    .toString().split(os.EOL);
  var profileTemplate = fs.readFileSync('views/account/profile.jade')
    .toString().split(os.EOL);
  var userModel = fs.readFileSync('models/User.js').toString().split(os.EOL);
  var app = fs.readFileSync('app.js').toString().split(os.EOL);
  var secrets = fs.readFileSync('config/secrets.js').toString().split(os.EOL);

  var index = passportConfig
    .indexOf('var FacebookStrategy = require("passport-facebook").Strategy;');
  if (facebookCheckbox.checked && index !== -1) {
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with Facebook.');
    passportConfig.splice(index, 47);
    fs.writeFileSync('config/passport.js', passportConfig.join(os.EOL));

    index = loginTemplate.indexOf(
      '      a.btn.btn-block.btn-facebook.btn-social(href="/auth/facebook")'
    );
    loginTemplate.splice(index, 3);
    fs.writeFileSync('views/account/login.jade', loginTemplate.join(os.EOL));

    index = profileTemplate.indexOf('  if user.facebook');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade',
      profileTemplate.join(os.EOL)
    );

    index = userModel.indexOf('  facebook: String,');
    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));

    index = app.indexOf([
      'app.get("/auth/facebook"',
      'passport.authenticate("facebook",',
      ' { scope: ["email", "user_location"] }));'
    ].join(' '));

    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));
  }

  index = passportConfig.indexOf(
    "var GitHubStrategy = require('passport-github').Strategy;"
  );
  if (githubCheckbox.checked && index !== -1) {
    console.log(index);
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with GitHub.');
    passportConfig.splice(index, 48);
    fs.writeFileSync('config/passport.js', passportConfig.join(os.EOL));

    index = loginTemplate.indexOf(
      "      a.btn.btn-block.btn-github.btn-social(href='/auth/github')"
    );
    loginTemplate.splice(index, 3);
    fs.writeFileSync('views/account/login.jade', loginTemplate.join(os.EOL));

    index = profileTemplate.indexOf('  if user.github');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade',
      profileTemplate.join(os.EOL)
    );

    index = userModel.indexOf('  github: String,');
    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));

    index = app.indexOf(
      'app.get("/auth/github", passport.authenticate("github"));'
    );
    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));
  }

  index = passportConfig.indexOf(
    'var GoogleStrategy = require("passport-google-oauth").OAuth2Strategy;'
  );
  if (googleCheckbox.checked && index !== -1) {
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with Google.');
    passportConfig.splice(index, 46);
    fs.writeFileSync('config/passport.js', passportConfig.join(os.EOL));

    index = loginTemplate.indexOf(
      "      a.btn.btn-block.btn-google-plus.btn-social(href='/auth/google')"
    );
    loginTemplate.splice(index, 3);
    fs.writeFileSync('views/account/login.jade', loginTemplate.join(os.EOL));

    index = profileTemplate.indexOf('  if user.google');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade',
      profileTemplate.join(os.EOL)
    );

    index = userModel.indexOf('  google: String,');
    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));

    index = app.indexOf(
      'app.get("/auth/google",' +
      ' passport.authenticate("google", { scope: "profile email" }));'
    );
    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));
  }

  index = passportConfig.indexOf(
    'var TwitterStrategy = require("passport-twitter").Strategy;'
  );
  if (twitterCheckbox.checked && index !== -1) {
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with Twitter.');
    passportConfig.splice(index, 43);
    fs.writeFileSync('config/passport.js', passportConfig.join(os.EOL));

    index = loginTemplate.indexOf(
      '      a.btn.btn-block.btn-twitter.btn-social(href="/auth/twitter")'
    );
    loginTemplate.splice(index, 3);
    fs.writeFileSync('views/account/login.jade', loginTemplate.join(os.EOL));

    index = profileTemplate.indexOf('  if user.twitter');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade', profileTemplate.join(os.EOL)
    );

    index = userModel.indexOf('  twitter: String,');
    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));

    index = app.indexOf(
      "app.get('/auth/twitter', passport.authenticate('twitter'));"
    );
    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));
  }

  index = passportConfig.indexOf(
    'var LinkedInStrategy = require("passport-linkedin-oauth2").Strategy;'
  );
  if (linkedinCheckbox.checked && index !== -1) {
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with LinkedIn.');
    passportConfig.splice(index, 47);
    fs.writeFileSync('config/passport.js', passportConfig.join(os.EOL));

    index = loginTemplate.indexOf(
      '      a.btn.btn-block.btn-linkedin.btn-social(href="/auth/linkedin")'
    );
    loginTemplate.splice(index, 3);
    fs.writeFileSync('views/account/login.jade', loginTemplate.join(os.EOL));

    index = profileTemplate.indexOf('  if user.linkedin');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade',
      profileTemplate.join(os.EOL)
    );

    index = userModel.indexOf('  linkedin: String,');
    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));

    index = app.indexOf(
      'app.get("/auth/linkedin",',
      ' passport.authenticate("linkedin", { state: "SOME STATE" }));'
    );
    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));
  }

  index = passportConfig.indexOf(
    'var InstagramStrategy = require("passport-instagram").Strategy;'
  );
  if (instagramCheckbox.checked && index !== -1) {
    passportConfig.splice(index, 1);
    index = passportConfig.indexOf('// Sign in with Instagram.');
    passportConfig.splice(index, 43);
    fs.writeFileSync(
      'config/passport.js',
      passportConfig.join(os.EOL)
    );

    index = loginTemplate.indexOf(
      '      a.btn.btn-block.btn-instagram.btn-social(href="/auth/instagram")'
    );
    loginTemplate.splice(index, 3);

    fs.writeFileSync(
      'views/account/login.jade',
      loginTemplate.join(os.EOL)
    );

    index = profileTemplate.indexOf('  if user.instagram');
    profileTemplate.splice(index - 1, 5);
    fs.writeFileSync(
      'views/account/profile.jade',
      profileTemplate.join(os.EOL)
    );

    index = app.indexOf(
      'app.get("/auth/instagram", passport.authenticate("instagram"));'
    );
    app.splice(index, 4);
    fs.writeFileSync('app.js', app.join(os.EOL));

    userModel.splice(index, 1);
    fs.writeFileSync('models/User.js', userModel.join(os.EOL));
  }

  home.remove(authForm);
  home.append(success);
  success.setContent(
    'Selected authentication providers have been removed' +
    'from passportConfig.js, User.js, app.js, login.jade and profile.jade!'
  );
  success.focus();
  screen.render();
});

var authText = blessed.text({
  parent: authForm,
  content: 'Selecting a checkbox removes an authentication provider.' +
    ' If authentication provider is already removed, no action will be taken.',
  padding: 1,
  bg: 'magenta',
  fg: 'white'
});

var facebookCheckbox = blessed.checkbox({
  parent: authForm,
  top: 6,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Facebook'
});

var githubCheckbox = blessed.checkbox({
  parent: authForm,
  top: 7,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'GitHub'
});

var googleCheckbox = blessed.checkbox({
  parent: authForm,
  top: 8,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Google'
});

var twitterCheckbox = blessed.checkbox({
  parent: authForm,
  top: 9,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Twitter'
});

var linkedinCheckbox = blessed.checkbox({
  parent: authForm,
  top: 10,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'LinkedIn'
});

var instagramCheckbox = blessed.checkbox({
  parent: authForm,
  top: 11,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Instagram'
});

var authSubmit = blessed.button({
  parent: authForm,
  top: 13,
  mouse: true,
  shrink: true,
  name: 'submit',
  content: ' SUBMIT ',
  style: {
    fg: 'blue',
    bg: 'white',
    focus: {
      fg: 'white',
      bg: 'red'
    }
  }
});

authSubmit.on('press', function() {
  authForm.submit();
});

var authCancel = blessed.button({
  parent: authForm,
  top: 13,
  left: 9,
  mouse: true,
  shrink: true,
  name: 'cancel',
  content: ' CANCEL ',
  style: {
    fg: 'blue',
    bg: 'white',
    focus: {
      fg: 'white',
      bg: 'red'
    }
  }
});

authCancel.on('press', function() {
  home.focus();
  home.remove(authForm);
  screen.render();
});

var emailForm = blessed.form({
  mouse: true,
  keys: true,
  fg: 'white',
  bg: 'blue',
  padding: { left: 1, right: 1 }
});

emailForm.on('submit', function() {
  var contactCtrl = fs.readFileSync('controllers/contact.js')
    .toString().split(os.EOL);
  var userCtrl = fs.readFileSync('controllers/user.js')
    .toString().split(os.EOL);
  var choice = null;

  if (sendgridRadio.checked) {
    choice = 'SendGrid';
  } else if (mailgunRadio.checked) {
    choice = 'Mailgun';
  } else if (mandrillRadio.checked) {
    choice = 'Mandrill';
  }

  var index = contactCtrl.indexOf(
    'var transporter = nodemailer.createTransport({'
  );
  contactCtrl.splice(index + 1, 1, "  service: '" + choice + "',");
  contactCtrl.splice(
    index + 3,
    1,
    '    user: secrets.' + choice.toLowerCase() + '.user,'
  );
  contactCtrl.splice(
    index + 4,
    1,
    '    pass: secrets.' + choice.toLowerCase() + '.password'
  );
  fs.writeFileSync('controllers/contact.js', contactCtrl.join(os.EOL));

  index = userCtrl.indexOf(
    '      var transporter = nodemailer.createTransport({'
  );
  userCtrl.splice(index + 1, 1, "        service: '" + choice + "',");
  userCtrl.splice(
    index + 3,
    1,
    '          user: secrets.' + choice.toLowerCase() + '.user,'
  );
  userCtrl.splice(
    index + 4,
    1,
    '          pass: secrets.' + choice.toLowerCase() + '.password'
  );

  index = userCtrl.indexOf(
    '      var transporter = nodemailer.createTransport({',
    (index + 1)
  );
  userCtrl.splice(
    index + 1,
    1,
    '        service: "' + choice + '",'
  );

  userCtrl.splice(
    index + 3,
    1,
    '          user: secrets.' + choice.toLowerCase() + '.user,'
  );
  userCtrl.splice(
    index + 4,
    1,
    '          pass: secrets.' + choice.toLowerCase() + '.password'
  );
  fs.writeFileSync('controllers/user.js', userCtrl.join(os.EOL));

  home.remove(emailForm);
  home.append(success);
  success.setContent('Email Service has been switched to ' + choice);
  success.focus();
  screen.render();
});

var emailText = blessed.text({
  parent: emailForm,
  content: 'Select one of the following email service providers ' +
    'for {underline}contact form{/underline}' +
    ' and {underline}password reset{/underline}.',
  padding: 1,
  bg: 'red',
  fg: 'white',
  tags: true
});

var sendgridRadio = blessed.radiobutton({
  parent: emailForm,
  top: 5,
  checked: true,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'SendGrid'
});

var mailgunRadio = blessed.radiobutton({
  parent: emailForm,
  top: 6,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Mailgun'
});

var mandrillRadio = blessed.radiobutton({
  parent: emailForm,
  top: 7,
  mouse: true,
  fg: 'white',
  bg: 'blue',
  content: 'Mandrill'
});

var emailSubmit = blessed.button({
  parent: emailForm,
  top: 9,
  mouse: true,
  shrink: true,
  name: 'submit',
  content: ' SUBMIT ',
  style: {
    fg: 'blue',
    bg: 'white',
    focus: {
      fg: 'white',
      bg: 'red'
    }
  }
});

emailSubmit.on('press', function() {
  emailForm.submit();
});

var emailCancel = blessed.button({
  parent: emailForm,
  top: 9,
  left: 9,
  mouse: true,
  shrink: true,
  name: 'cancel',
  content: ' CANCEL ',
  style: {
    fg: 'blue',
    bg: 'white',
    focus: {
      fg: 'white',
      bg: 'red'
    }
  }
});

emailCancel.on('press', function() {
  home.focus();
  home.remove(emailForm);
  screen.render();

});

home.on('select', function(child, index) {
  switch (index) {
    case 0:
      home.append(authForm);
      authForm.focus();
      screen.render();
      break;
    case 1:
      home.append(emailForm);
      emailForm.focus();
      break;
    case 2:
      addClusterSupport();
      home.append(success);
      success.setContent([
        'New file {underline}cluster_app.js{/underline} has been created.',
        'Your app is now able to use more than 1 CPU by running',
        '{underline}node cluster_app.js{/underline}, which in turn',
        'spawns multiple instances of {underline}app.js{/underline}'
      ].join(' '));
      success.focus();
      screen.render();
      break;
    default:
      process.exit(0);
  }
});

screen.render();


function addClusterSupport() {

  var fileContents = multiline(function() {
/*
var os = require('os');
var cluster = require('cluster');

cluster.setupMaster({
  exec: 'app.js'
});

cluster.on('exit', function(worker) {
  console.log('worker ' + worker.id + ' died');
  cluster.fork();
});

for (var i = 0; i < os.cpus().length; i++) {
  cluster.fork();
}
*/
  });

  fs.writeFileSync('cluster_app.js', fileContents);
}