routes-account.js

const fs = require('fs')
const SamlStrategy = require('passport-saml').Strategy
const dbconn = require('./dbconn')
const methods = require('./methods')
const gitlab = require('./gitlab')
// pwd encryption
const bcrypt = require('bcryptjs');
const saltRounds = 10;
const salt = 64; // salt length
// forgot pwd
const async = require('async')
const crypto = require('crypto')
const mailer = require('./mailer')
const axios = require('axios')

const myUser = require('../classes/user')
var loggedInUser

module.exports = function (app, config, passport, i18n) {

  // =========== PASSPORT =======
  passport.serializeUser(function (user, done) {
    done(null, user);
  });

  passport.deserializeUser(function (user, done) {
    done(null, user);
  });

  const mailSignature = 'Mit den besten Grüßen,<br/>das Transferportal-Team der HFT Stuttgart<br/><br/>' +
    'Transferportal der Hochschule für Technik Stuttgart<br/>' +
    'Schellingstr. 24   70174 Stuttgart<br/>' +
    'm4lab@hft-stuttgart.de<br/>' +
    '<a href="https://transfer.hft-stuttgart.de">https://transfer.hft-stuttgart.de</a><br/>' +
    '<a href="http://www.hft-stuttgart.de/Aktuell/"><img border="0" alt="HFT" src="https://m4lab.hft-stuttgart.de/img/signature/hft_logo.png" width="30" height="30"></a>  &nbsp;' +
    '<a href="http://www.facebook.com/hftstuttgart"><img border="0" alt="Facebook" src="https://m4lab.hft-stuttgart.de/img/signature/fb_bw.png" width="30" height="30"></a>  &nbsp;' +
    '<a href="https://www.instagram.com/hft_stuttgart/"><img border="0" alt="Instagram" src="https://m4lab.hft-stuttgart.de/img/signature/instagram_bw.png" width="30" height="30"></a>  &nbsp;' +
    '<a href="https://twitter.com/hft_presse"><img border="0" alt="Twitter" src="https://m4lab.hft-stuttgart.de/img/signature/twitter_bw.png" width="30" height="30"></a>  &nbsp;' +
    '<a href="https://www.youtube.com/channel/UCi0_JfF2qMZbOhOnNH5PyHA"><img border="0" alt="Youtube" src="https://m4lab.hft-stuttgart.de/img/signature/youtube_bw.png" width="30" height="30"></a>  &nbsp;' +
    '<a href="http://www.hft-stuttgart.de/Aktuell/Presse-Marketing/SocialMedia/Snapcode HFT_Stuttgart.jpg/photo_view">' +
    '<img border="0" alt="Snapchat" src="https://m4lab.hft-stuttgart.de/img/signature/snapchat_bw.png" width="30" height="30"></a>' +
    '<br/><img border="0" src="https://m4lab.hft-stuttgart.de/img/signature/inno_bw.png" width="150" height="100">'

  var samlStrategy = new SamlStrategy({
      // URL that goes from the Identity Provider -> Service Provider
      callbackUrl: config.passport.saml.path,
      // Base address to call logout requests
      logoutUrl: config.passport.saml.logoutUrl,
      
      entryPoint: config.passport.saml.entryPoint,
      issuer: config.passport.saml.issuer,
      identifierFormat: null,
      
      // Service Provider private key
      decryptionPvk: fs.readFileSync(__dirname + '/cert/key.pem', 'utf8'),
      // Service Provider Certificate
      privateCert: fs.readFileSync(__dirname + '/cert/key.pem', 'utf8'),
      // Identity Provider's public key
      cert: fs.readFileSync(__dirname + '/cert/cert_idp.pem', 'utf8'),
      
      validateInResponseTo: false,
      disableRequestedAuthnContext: true
  },
  function (profile, done) {
    return done(null, {
      id: profile.nameID,
      idFormat: profile.nameIDFormat,
      email: profile.email,
      firstName: profile.givenName,
      lastName: profile.sn
    });
  });
  
  passport.use(samlStrategy);

  // ============= SAML ==============
  app.post(config.passport.saml.path,
    passport.authenticate(config.passport.strategy,
      {
        failureRedirect: '/account/',
        failureFlash: true
      }),
    function (req, res) {
      res.redirect('/account/');
    }
  );

  // to generate Service Provider's XML metadata
  app.get('/saml/metadata',
    function(req, res) {
      res.type('application/xml');
      var spMetadata = samlStrategy.generateServiceProviderMetadata(fs.readFileSync(__dirname + '/cert/cert.pem', 'utf8'));
      res.status(200).send(spMetadata);
    }
  );

  // ================ test i18n ==================
  i18n.setLocale('de');
  app.get('/de', function(req, res) {
    var greeting = i18n.__('Hello World')
    res.send(greeting)
  });

  var lang = 'DE'

  // ======== APP ROUTES - ACCOUNT ====================
  var updatePasswordMailSubject = "Ihr Passwort für das Transferportal wurde gespeichert."
  // var mailSignature = "Mit den besten Grüßen,\ndas Transferportal-Team der HFT Stuttgart\n\n"+
  //   "Transferportal der Hochschule für Technik Stuttgart\n"+
  //   "Schellingstr. 24\n"+
  //   "70174 Stuttgart\n"+
  //   "m4lab@hft-stuttgart.de\n"+
  //   "https://transfer.hft-stuttgart.de"
  var updatePasswordMailContent = '<div>Lieber Nutzer,<br/><br/>Ihr Passwort wurde erfolgreich geändert.<br/><br/>' + mailSignature + '</div>';

  app.get('/', function (req, res) {
    if (req.isAuthenticated()) {
      methods.getUserByEmail(req.user.email, function(data, err){
        if (!err) {
          // Initialize user
          if (!loggedInUser) {
            loggedInUser = new myUser()
            loggedInUser.id = data.id
            loggedInUser.email = req.user.email
            loggedInUser.salutation = data.salutation
            loggedInUser.title = data.title
            loggedInUser.firstName = data.firstname
            loggedInUser.lastName = data.lastname
            loggedInUser.industry = data.industry
            loggedInUser.organisation = data.organisation
            loggedInUser.speciality = data.speciality
            loggedInUser.m4lab_idp = data.m4lab_idp
            loggedInUser.verificationStatus = data.verificationStatus

            methods.getGitlabId(data.id, function(gitlabUserId, err){
              if(!err) {
                loggedInUser.gitlabUserId = gitlabUserId
              }
              //console.log(loggedInUser)
            })
          }
          
          res.render(lang+'/account/home', {
            user: data
          });
        }
      })
    } else {
      res.redirect('/login'); // localhost
    }
  });

  app.get('/login',
    passport.authenticate(config.passport.strategy, {
      successRedirect: '/',
      failureRedirect: '/login'
    })
  )

  app.get('/logout', function (req, res) {
    if (req.user == null) {
      return res.redirect('/');
    }

    req.user.nameID = req.user.id;
    req.user.nameIDFormat = req.user.idFormat;
    return samlStrategy.logout(req, function(err, uri) {
      req.logout();

      if ( req.session ) {
        req.session.destroy((err) => {
          if(err) {
              return console.log(err);
          }
        });
      }

      return res.redirect(uri);
    });
  });

  app.get('/profile', function (req, res) {
    if (req.isAuthenticated()) {
      methods.getUserByEmail(req.user.email, function(data, err){
        if (!err) {
          if (data.verificationStatus == 1) {
            console.log(data)
            res.render(lang+'/account/profile', {
              user: data,
              email: req.user.email
            })
          }
          else {
            res.render(lang+'/account/home', {
              user: data
            });
          }
        }
      })
    } else {
      res.redirect('/login');
    }
  });

  app.get('/services', function (req, res) {
    if (req.isAuthenticated() && loggedInUser) {
      if (loggedInUser.verificationStatus == 1) {
        let gitlabReposArr = []
        let gitlabPagesArr = []
        let userData = {
          firstname: loggedInUser.firstName,
          lastname: loggedInUser.lastName,
          m4lab_idp: loggedInUser.m4lab_idp}
        
        if (loggedInUser.gitlabUserId) {
          // GitLab is already activated for this user. Allow project creation.
          /*
          waterfall([
            function(callback){
              callback(null, 'one', 'two');
            },
            function(arg1, arg2, callback){
              callback(null, 'three');
            },
            function(arg1, callback){
              // arg1 now equals 'three'
              callback(null, 'done');
            }
          ], function (err, result) {
            // result now equals 'done'
          });
          */
          async.waterfall([
            // check projects in runners
            function(callback) {
              let gitlabRunnersProjectIdsArr
              gitlab.getProjectIdsFromRunners (loggedInUser.gitlabUserId, function(data){
                if(data.error)
                  return res.status(500).send(data.data)
                gitlabRunnersProjectIdsArr = data.data
                callback(null, gitlabRunnersProjectIdsArr)
              })
            }
          ], function(err, gitlabRunnersProjectIdsArr) {
            // get user projects
            gitlab.getUserProjects (loggedInUser.gitlabUserId, function(data){
              if (data.error)
                return res.status(500).send(data.data)
              let gitlabData = data.data
              for(let i = 0; i < gitlabData.length; i++){
                if (gitlabData[i].tag_list.includes('website')) {
                  let idxRunners = gitlabRunnersProjectIdsArr.indexOf(gitlabData[i].id)
                  let isWebsitePublished = false
                  if (idxRunners > 0) {
                    isWebsitePublished = true
                  }
                  let page = {
                    name: gitlabData[i].name,
                    description: gitlabData[i].description,
                    avatar_url: gitlabData[i].avatar_url,
                    web_url: gitlabData[i].web_url,
                    isPublished: isWebsitePublished}
                  gitlabPagesArr.push(page)
                } else {
                  let repo = {
                    name: gitlabData[i].name,
                    description: gitlabData[i].description,
                    avatar_url: gitlabData[i].avatar_url,
                    web_url: gitlabData[i].web_url}
                  gitlabReposArr.push(repo)
                }
              }
              
              res.render(lang+'/account/services', {
                user: userData,
                gitlabRepos: gitlabReposArr,
                gitlabPages: gitlabPagesArr
              })
            })
          })
        } else {
          gitlab.getUserIdByEmail(req.user.email, function(data){
            if (!data.error) {
              let gitlabActivationData = {
                user_id: loggedInUser.id,
                gitlab_userId: data.data}
              methods.addGitlabUser(gitlabActivationData, function(err){
                if(!err) {
                  loggedInUser.gitlabUserId = gitlabActivationData.gitlab_userId
                  res.redirect('/services')
                }
              })
            } else {
              res.render(lang+'/account/services', {
                user: userData
              })
            }
          })
        }
      } else {
        res.render(lang+'/account/home', {
          user: data
        })
      }
    } else {
      res.redirect('/login')
    }
  })

  app.get('/security', function (req, res) {
    if (req.isAuthenticated()) {
      methods.getUserByEmail(req.user.email, function(data, err){
        if (!err) {
          if (data.verificationStatus == 1 && data.m4lab_idp == 1) {
            res.render(lang+'/account/security', {
              user: data
            })
          }
          else {
            res.render(lang+'/account/home', {
              user: data
            });
          }
        }        
      })
    } else {
      res.redirect('/login');
    }
  });

  app.post('/updateProfile', function (req, res) {
    var userData = {
      salutation: req.body.inputSalutation,
      title: req.body.inputTitle,
      firstname: req.body.inputFirstname,
      lastname: req.body.inputLastname,
      email: req.body.inputEmail,
      organisation: req.body.inputOrganisation,
      industry: req.body.inputIndustry,
      speciality: req.body.inputSpeciality,
    }

    if (req.isAuthenticated()) {
      if (userData.email) {
        dbconn.user.query('UPDATE user SET ? WHERE email = "' +userData.email+'"', userData, function (err, rows, fields) {
            //if (err) throw err;
            if (err) {
              req.flash('error', "Failed");
            }
            else {
              //req.flash('success', 'Profile updated!');
              req.flash('success', 'Ihr Benutzerprofil wurde aktualisiert!');
            }
            res.redirect('/account/profile');
        })
      }
    } else {
      res.redirect('/login');
    }
  });

  app.post('/changePwd', function (req, res) {
    if (req.isAuthenticated()) {
      var currPwd = req.body.inputCurrPwd
      var newPwd = req.body.inputNewPwd
      var retypePwd = req.body.inputConfirm

      methods.getUserIdByEmail(req.user.email, function(userId, err) {
        if (!err) {
          // Load hashed passwd from DB
          dbconn.user.query('SELECT password FROM credential WHERE user_id='+userId, function (err, rows, fields) {
            if (err) {
              console.error(err)
              res.status(500).render(lang+'/500', {
                error: err
              })
            }
            var userPwd = rows[0].password

            // check if the password is correct
            bcrypt.compare(currPwd, userPwd, function(err, isMatch) {
              if (err) {
                console.error(err)
                res.status(500).render(lang+'/500', {
                  error: err
                })
              }
              else if (!isMatch) {
                //req.flash('error', "Sorry, your password was incorrect. Please double-check your password.")
                req.flash('error', "Das Passwort ist leider falsch. Bitte überprüfen Sie Ihre Eingabe.")
                //res.redirect('/security')
                res.redirect('/account/security')
              }
              else {
                if ( newPwd != retypePwd ) {
                  //req.flash('error', "Passwords do no match. Please make sure you re-type your new password correctly.")
                  req.flash('error', 'Passwörter stimmen nicht überein. Bitte stellen Sie sicher, dass Sie das Passwort beide Male genau gleich eingeben.')
                  res.redirect('/account/security')
                }
                else {
                  // update password
                  bcrypt.genSalt(saltRounds, function(err, salt) {
                    bcrypt.hash(newPwd, salt, function(err, hash) {
                      var credentialData = {
                        password: hash,
                        user_id: userId
                      }
                      methods.updateCredential(credentialData, function(err){
                        if (err) {
                          //req.flash('error', "Database error: Password cannot be modified.")
                          req.flash('error', "Datenbankfehler: Passwort kann nicht geändert werden.")
                          throw err
                        }
                        else {
                          //req.flash('success', "Pasword updated!")
                          req.flash('success', "Passwort aktualisiert!")
                          mailer.options.to = req.user.email
                          //mailOptions.subject = "Your M4_LAB Password has been updated."
                          mailer.options.subject = updatePasswordMailSubject
                          mailer.options.html = updatePasswordMailContent
                          mailer.transport.sendMail(mailer.options, function(err) {
                            if (err) {
                              console.log(err)
                            }
                          });
                        }
                        res.redirect('/account/security')
                      })
                    });
                  });
                }
              }
          })
        })
        }
      })
    }
    else {
      res.redirect('/login');
    }
  });

  app.get('/forgotPwd', function (req, res) {
    res.render(lang+'/account/forgotPwd', {
      user: req.user
    });
  });

  app.post('/forgotPwd', function(req, res, next) {
    //methods.currentDate();

    var emailAddress = req.body.inputEmail;
  /*  var emailContent = "Hi there,\n\n"+
      "we've received a request to reset your password. However, this email address is not on our database of registered users.\n\n"+
      "Thanks,\nM4_LAB Team";
    var emailSubject = "Account Access Attempted"; */

    async.waterfall([
      function(done) {
        crypto.randomBytes(20, function(err, buf) {
          var token = buf.toString('hex');
          done(err, token);
        });
      },
      function(token, done) {
        methods.checkUserEmail(emailAddress, function(err, user){
          if (user) {
            console.log("email: user found");
            //var emailSubject = "M4_LAB Password Reset";
            var emailSubject = "Ihre Passwort-Anfrage an das Transferportal der HFT Stuttgart";
            /* var emailContent = "Hi User,\n\n"+
              "we've received a request to reset your password. If you didn't make the request, just ignore this email.\n\n"+
              "Otherwise, you can reset your password using this link: http://m4lab.hft-stuttgart.de/account/reset/" + token + "\n" +
              "This password reset is only valid for 1 hour.\n\n"+
              "Thanks,\nM4_LAB Team" */
            // var emailContent = "Lieber Nutzer,\n\n"+
            //   "wir haben Ihre Anfrage zur Erneuerung Ihres Passwortes erhalten. Falls Sie diese Anfrage nicht gesendet haben, ignorieren Sie bitte diese E-Mail.\n\n"+
            //   "Sie können Ihr Passwort mit dem Klick auf diesen Link ändern: http://m4lab.hft-stuttgart.de/account/reset/" + token + "\n" + // test server
            //   //"Sie können Ihr Passwort mit dem Klick auf diesen Link ändern: http://localhost:9989/reset/" + token + "\n" + // localhost
            //   "Dieser Link ist aus Sicherheitsgründen nur für 1 Stunde gültig.\n\n"+mailSignature

            var emailContent = '<div>Lieber Nutzer, Varun<br/><br/>' +
              '<p>wir haben Ihre Anfrage zur Erneuerung Ihres Passwortes erhalten. Falls Sie diese Anfrage nicht gesendet haben, ignorieren Sie bitte diese E-Mail.<br/><br/>' +
              'Sie können Ihr Passwort mit dem Klick auf diesen Link ändern: http://m4lab.hft-stuttgart.de/account/reset/' + token + '<br/>' + // test server
              'Dieser Link ist aus Sicherheitsgründen nur für 1 Stunde gültig.<br/></p>' + mailSignature + '</div>';
            
            var credentialData = {
              user_id: user.id,
              resetPasswordToken: token,
              resetPasswordExpires: Date.now() + 3600000 // 1 hour
            }
            methods.updateCredential(credentialData, function(err) {
              done(err, token, user);
            });

            // send email
            mailer.options.to = emailAddress;
            mailer.options.subject = emailSubject;
            mailer.options.html = emailContent;
            mailer.transport.sendMail(mailer.options, function(err) {
              done(err, 'done');
            });
          }
          else {
            //done(err, null, null);
            done(err, 'no user found');
          }
        });
      }
    ], function(err) {
      if (err) {
        //req.flash('error', 'An error occured. Please try again.');
        req.flash('error', 'Ein Fehler ist aufgetreten. Bitte versuchen Sie es erneut.');
      }
      else {
        //req.flash('success', 'If your email is registered, an e-mail has been sent to ' + emailAddress + ' with further instructions.');
        req.flash('success', 'Wenn Ihre E-Mail-Adresse registriert ist, wurde eine E-Mail mit dem weiteren Vorgehen an ' + emailAddress + ' versendet.');
      }
      //res.redirect('/forgotPwd'); // deployment
      res.redirect('/account/forgotPwd'); // localhost
    });
  });

  app.get('/reset/:token', function(req, res) {
    methods.getUserByToken(req.params.token, function(err, user){
      if (!user) {
        //req.flash('error', 'Password reset token is invalid or has expired.');
        req.flash('error', 'Der Schlüssel zum zurücksetzen des Passworts ist ungültig oder abgelaufen.');
        //res.redirect('/forgotPwd'); // deployment
        res.redirect('/account/forgotPwd'); // deployment
      }
      else {
        res.render(lang+'/account/reset');
      }
    });
  });

  app.post('/reset/:token', function(req, res) {
    var newPwd = req.body.inputNewPwd
    methods.getUserByToken(req.params.token, function(err, user){
      if (user) {
        // encrypt password
        bcrypt.genSalt(saltRounds, function(err, salt) {
          bcrypt.hash(newPwd, salt, function(err, hash) {
            var credentialData = {
              password: hash,
              user_id: user.user_id
            }
            // update password
            methods.updateCredential(credentialData, function(err){
              if (err) {
                //req.flash('error', "Database error: Password cannot be modified.")
                req.flash('error', "Datenbankfehler: Passwort kann nicht geändert werden.")
                throw err
              }
              else {
                //req.flash('success', "Your pasword has been updated.")
                req.flash('success', "Passwort aktualisiert!")
                // send notifiaction email
                mailer.options.to = user.email
                mailer.options.subject = updatePasswordMailSubject
                mailer.options.html = updatePasswordMailContent
                mailer.transport.sendMail(mailer.options, function(err) {
                  if (err) {
                    console.log(err)
                  }
                });
                // redirect to login page
                res.redirect('/login')
              }
            })
          });
        });
      }
      else {
        req.flash('error', "User not found.")
        res.redirect('/login')
      }
    });

  });

  // ============= NEW GITLAB PAGES ===========================
  app.get('/newPages', function(req, res){
    if (req.isAuthenticated() && loggedInUser) {
      let userData = {
        firstName: loggedInUser.firstName,
        lastName: loggedInUser.lastName,
        m4lab_idp: loggedInUser.m4lab_idp
      }
      let projectData = {
        name: null,
        description: null,
        avatar: null
      }
      res.render(lang+'/account/newPages', {
        user: userData,
        project: projectData
      })
    }
    else {
      res.redirect('/login');
    }
  })

  app.post('/newPages', function(req, res) {
    if (req.isAuthenticated() && loggedInUser) {
      if (req.files && req.body.name && req.body.description) {
        let projectName = req.body.name.toLowerCase().replace(/\s/g, '-')
        let projectDesc = req.body.description
        let projectAvatar = req.files.logo
        let avatarDir = 'public/upload/'

        let userData = {
          firstName: loggedInUser.firstName,
          lastName: loggedInUser.lastName,
          m4lab_idp: loggedInUser.m4lab_idp}

        async.waterfall([
          // upload avatar
          function(done) {
            projectAvatar.mv(avatarDir + projectAvatar.name, function(err) {
              if (err)
                return res.status(500).send(err)
              console.log('avatar uploaded')
              done(err)
            })
          },
          // call gitlab
          function(done) {
            let newPagesData = {
              gitlabUserId: loggedInUser.gitlabUserId,
              name: projectName,
              description: projectDesc,
              avatar: avatarDir+projectAvatar.name}
            gitlab.createNewPages(newPagesData, function(msg, err){
              if (err) { callback(err) }
              else {
                console.log(msg)
                if(msg.message) {
                  if(msg.message.name == "has already been taken") {
                    let data = {
                      status: "error",
                      msg: "project name has already been taken, please choose another name"}
                    let projectData = {
                      name: projectName,
                      description: projectDesc,
                      avatar: projectAvatar}
            
                    req.flash("error", data.msg)
                    res.render(lang+'/account/newPages', {
                      user: userData,
                      project: projectData
                    })
                  }
                }
                else {
                  let data = {
                    status: "success",
                    msg: "success"}
                  let projectData = {
                    name: projectName,
                    description: projectDesc,
                    avatar: projectAvatar,
                    webUrl: msg.web_url}

                  req.flash("success", data.msg)
                  res.render(lang+'/account/newPages', {
                    user: userData,
                    project: projectData
                  })
                } 
              }
              done(err)
            })
          },
          // delete avatar from /public/avatar
          function(){
            fs.unlink(avatarDir+projectAvatar.name, (err) => {
              if (err) throw err;
              console.log('avatar is successfully deleted');
            })
          }
        ])
      }
      else {
        console.log('Please provide the data')
      }
    }
    else {
      res.redirect('/login');
    }
  })
  
  // ============= NEW USERS REGISTRATION ===========================
  app.get('/registration', function(req, res) {
    res.render(lang+'/account/registration')
  })
  app.post('/registration', function(req, res) {
    // user data
    var curDate = new Date()
    var userData = {
      salutation: req.body.inputSalutation,
      title: req.body.inputTitle,
      firstname: req.body.inputFirstname,
      lastname: req.body.inputLastname,
      email: req.body.inputEmail,
      organisation: req.body.inputOrganisation,
      industry: req.body.inputIndustry,
      speciality: req.body.inputSpeciality,
      createdDate: curDate.toISOString().slice(0,10)
    }

    var userEmail = userData.email
    var pos = userEmail.indexOf('@')
    var emailLength = userEmail.length
    var emailDomain = userEmail.slice(pos, emailLength);

    if ( emailDomain.toLowerCase() == "@hft-stuttgart.de") {
        req.flash('error', "Fehlgeschlagen: HFT-Account")
        res.redirect('/account/registration');
    }
    else {
      let token
      async.waterfall([
        function(done) {
          crypto.randomBytes(20, function(err, buf) {
            token = buf.toString('hex');
            done(err, token);
          });
        },
        // encrypt password
        function(token, done) {
          bcrypt.genSalt(saltRounds, function(err, salt) {
            bcrypt.hash(req.body.inputPassword, salt, function(err, hash) {
              var newAccount = {
                profile: userData,
                password: hash,
                verificationToken: token
              }
              done(err, newAccount)
            });
          });
        },
        // save data
        function(newAccount, err) {
          methods.registerNewUser(newAccount, function(err){
            if (err) {
              req.flash('error', "Fehlgeschlagen")
            }
            else {
              // send email
              var emailSubject = "Bitte bestätigen Sie Ihr M4_LAB Benutzerkonto"
              // var emailContent = "Lieber Nutzer,\n\n"+
              //     "vielen Dank für Ihre Anmeldung am Transferportal der HFT Stuttgart.\n"+
              //     "Um Ihre Anmeldung zu bestätigen, klicken Sie bitte diesen Link: "+config.app.host+"/verifyAccount?token="+token+"\n"+
              //     "Ohne Bestätigung Ihres Kontos müssen wir Ihr Konto leider nach 7 Tagen löschen.\n\n"+
              //     "Sollten Sie sich selbst nicht mit Ihren Daten am Transferportal registriert haben, ignorieren Sie diese E-Mail bitte.\n\n"+mailSignature
              var emailContent = '<div>Lieber Nutzer,<br/><br/>' +
                '<p>vielen Dank für Ihre Anmeldung am Transferportal der HFT Stuttgart. <br/>' +
                'Um Ihre Anmeldung zu bestätigen, klicken Sie bitte diesen Link: ' + config.app.host + '/verifyAccount?token=' + token +
                '<br/><br/>' +
                'Ohne Bestätigung Ihres Kontos müssen wir Ihr Konto leider nach 7 Tagen löschen.</p><br/>' + mailSignature +
                '</div>';
              mailer.options.to = req.body.inputEmail;
              mailer.options.subject = emailSubject;
              mailer.options.html = emailContent;
              mailer.transport.sendMail(mailer.options, function(err) {
                if (err) {
                  console.log('cannot send email')
                  throw err
                }
              })
              // user feedback
              req.flash('success', 'Vielen Dank für Ihre Registrierung!'+'\r\n\r\n'+
                'Wir haben Ihnen eine E-Mail an Ihre verwendete Adresse gesendet. Diese enthält einen Link zur Bestätigung Ihres Accounts.'+'\r\n'+
                'Wenn Sie die Mail nicht in ihrem Postfach vorfinden, prüfen Sie bitte auch Ihren Spam-Ordner.')
            }
            res.redirect('/account/registration')
          })
        }
      ])
    }
  })

  // ============= USER VERIFICATION ================================
  app.get("/verifyAccount", function(req, res){
    console.log(req.query)
    methods.getUserIdByVerificationToken(req.query.token, function(userId, err){
      if (userId) {
        let userData = {
          id: userId,
          verificationStatus: 1
        }
        methods.verifyUserAccount(userData, function(err){
          if (err) {
            console.log("Error: "+err)
            res.render(lang+'/account/verification', {
              status: false
            });
          }
          else {
            // send welcome email after successful account verification
            methods.getUserById(userId, function(data, err){
              if (err) {
                console.log("Error: "+err)
              }
              else {
                // send email
                var emailSubject = "Herzlich willkommen"
                // var emailContent = "Lieber Nutzer,\n\n"+
                //     "herzlich willkommen beim Transferportal der HFT Stuttgart!\n"+ 
                //     "Sie können nun alle Dienste des Portals nutzen.\n\n"+mailSignature
                var emailContent = '<div>Lieber Nutzer,<br/><br/>' +
                  '<p>herzlich willkommen beim Transferportal der HFT Stuttgart!<br/>' +
                  'Sie können nun alle Dienste des Portals nutzen.<p/><br/>' + mailSignature;
                mailer.options.to = data.email;
                mailer.options.subject = emailSubject;
                mailer.options.html = emailContent;
                mailer.transport.sendMail(mailer.options, function(err) {
                  if (err) {
                    console.log('cannot send email')
                    throw err
                  }
                })
              }
            })

            res.render(lang+'/account/verification', {
              status: true
            });
          }
        })
      }
      else {
        res.render(lang+'/account/verification', {
          status: null
        });
      }
    })
  })
  app.get("/resendVerificationEmail", function(req, res){
    if (req.isAuthenticated()) {
      var emailAddress = req.user.email
      
      methods.getUserIdByEmail(req.user.email, function(userId, err) {
        if (!err) {
          // get token
          methods.getVerificationTokenByUserId(userId, function(token, err){
            if (!err) {
              if (token) {
                // send email
                var emailSubject = "Bitte bestätigen Sie Ihr M4_LAB Benutzerkonto"
                // var emailContent = "Lieber Nutzer,\n\n"+
                //     "vielen Dank für Ihre Anmeldung am Transferportal der HFT Stuttgart. "+ 
                //     "\nUm Ihre Anmeldung zu bestätigen, klicken Sie bitte diesen Link: "+config.app.host+"/verifyAccount?token="+token+
                //     "\n\nOhne Bestätigung Ihres Kontos müssen wir Ihr Konto leider nach 7 Tagen löschen.\n\n"+mailSignature
                var emailContent = '<div>Lieber Nutzer,<br/><br/>' +
                  '<p>vielen Dank für Ihre Anmeldung am Transferportal der HFT Stuttgart. <br/>' +
                  'Um Ihre Anmeldung zu bestätigen, klicken Sie bitte diesen Link: ' + config.app.host + '/verifyAccount?token=' + token +
                  '<br/><br/>' +
                  'Ohne Bestätigung Ihres Kontos müssen wir Ihr Konto leider nach 7 Tagen löschen.</p><br/>' + mailSignature +
                  '</div>';
                mailer.options.to = emailAddress;
                mailer.options.subject = emailSubject;
                mailer.options.html = emailContent;
                mailer.transport.sendMail(mailer.options, function(err) {
                  if (err) {
                    console.log('cannot send email')
                    throw err
                  }
                })
                res.send(true)
              }
              else {
                res.send(false)
              }
            }
            else {
              console.log(err)
            }
          })
        }
      })
    }
  })

  app.get('/email/:email', function(req, res) {
    methods.checkUserEmail(req.params.email, function(err, user){
      if (!err) {
        if (user) {
          res.send(false)
        }
        else {
          res.send(true)
        }  
      }
    })
  })

  app.get('/contact', function (req, res) {
      res.render(lang+'/account/contact', {
        user: req.user
      });
    });

  app.post('/contact', function(req, res, next) {
      //methods.currentDate();
      let emailAddress = req.body.inputEmail;
      let supportAddress = "support-transfer@hft-stuttgart.de";
      let inputName = req.body.name;
      let inputContent = req.body.message;
      let emailContent = "Es wurde eine Anfrage an das Transferportal gestellt: \n\n NAME: " + inputName + "\n NACHRICHT:\n "+ inputContent;
      let emailSubject = "Ihre Anfrage an das Transferportal";
      async.waterfall([
        function(done) {
            // send email
            mailer.options.to = supportAddress;
            mailer.options.cc = emailAddress;
            mailer.options.subject = emailSubject;
            mailer.options.text = emailContent;
            mailer.transport.sendMail(mailer.options, function(err) {
                done(err, 'done');
              });
          }
      ], function(err) {
        if (err) {
          req.flash('error', 'Ein Fehler ist aufgetreten. Bitte versuchen Sie es erneut.');
        }
        else {
          req.flash('success', 'Vielen Dank für Ihre Anfrage. Wir melden uns baldmöglichst bei Ihnen. Eine Kopie Ihrer Anfrage wurde an ' + emailAddress + ' versandt.');
        }
        //res.redirect('/forgotPwd'); // deployment
        res.redirect('/account/contact'); // localhost
      });
    });
};