const tools = require('./tools/general');

require('./config/config');

const Email = require('email-templates');

var i18n = require("i18n");


const previewEmail = require('preview-email');
const nodemailer = require("nodemailer");

const transport_preview = nodemailer.createTransport({
  jsonTransport: true
});

// create reusable transport method (opens pool of SMTP connections)
var smtpTransport = nodemailer.createTransport({
  service: 'Gmail',
  auth: {
    user: process.env.EMAIL_FROM,
    pass: process.env.EMAIL_PW
  }
});

function checkifSendEmail() {
  return process.env.SEND_EMAIL === "1";
  //return false;
}


module.exports = {
  sendEmail_base: function (template, user, to, mylocalsconf, replyTo) {

    console.log('mylocalsconf', mylocalsconf);

    // console.log("check EMAIL :" + checkifSendEmail());

    const email = new Email({
      message: {
        from: process.env.EMAIL_FROM, // sender address
        headers: {
          'Reply-To': replyTo
        }
      },
      send: checkifSendEmail(),
      preview: !checkifSendEmail(),
      transport: {
        service: 'Gmail',
        auth: {
          user: process.env.EMAIL_FROM,
          pass: process.env.EMAIL_PW
        }
      },
      // htmlToText: false
    });

    return email
      .send({
        template: template,
        message: {
          to: to,
        },
        locals: mylocalsconf,
      })
      .then((ris) => {
        return !!ris
      })
      .catch((err) => {
        console.error(err);
        return false
      });
  },

  sendEmail_Normale: function (to, subject, html, replyTo) {

    // setup e-mail data with unicode symbols
    var mailOptions = {
      from: process.env.EMAIL_FROM, // sender address
      to: to,
      generateTextFromHTML: true,
      subject: subject,
      html: html,
    };

    if (replyTo)
      mailOptions['reply-to'] = replyTo;

    if (process.env.SEND_EMAIL === 1) {
      console.log("SEND EMAIL smtpTransport");
// send mail with defined transport object
      smtpTransport.sendMail(mailOptions, function (error, response) {
        if (error) {
          console.log(error);
        } else {
          console.log("Message sent: " + response);
        }
      });
    } else {
      if (process.env.PROVA_EMAIL_TEMPLATE !== "1")
        previewEmail(mailOptions).then(console.log).catch(console.error);
      else
        transport_preview.sendMail(mailOptions).then(console.log).catch(console.error);
    }
  },
  // getHostByIdApp: function (idapp) {
  //   if (idapp === 1) {
  //     let siteport = (process.env.PORT_APP1 !== "0") ? (':' + process.env.PORT_APP1) : "";
  //     return process.env.URLBASE_APP1 + siteport;
  //   } else {
  //     return ""
  //   }
  // },

  getlinkReg: function (idapp, idreg) {
    strlinkreg = tools.getHostByIdApp(idapp) + process.env.LINKVERIF_REG + `?idapp=${idapp}&idlink=${idreg}`;
    return strlinkreg;
  },
  getlinkRequestNewPassword: function (idapp, user, tokenforgot) {
    strlinkreg = tools.getHostByIdApp(idapp) + "/#" + process.env.LINK_REQUEST_NEWPASSWORD + `?idapp=${idapp}&username=${user}&=tokenforgot=${tokenforgot}`;
    return strlinkreg;
  },
  sendEmail_Registration: function (lang, emailto, user, idapp, idreg) {

    console.log('idapp', idapp, tools.getNomeAppByIdApp(idapp));

    mylocalsconf = {
      locale: lang,
      nomeapp: tools.getNomeAppByIdApp(idapp),
      strlinkreg: this.getlinkReg(idapp, idreg),
      username: user.username,
      name: user.name,
      surname: user.surname,
      forgetpwd: "",
      emailto: emailto,
    };

    this.sendEmail_base('registration/' + lang, user, emailto, mylocalsconf, tools.getreplyToEmailByIdApp(idapp));

    // Send to the Admin an Email
    this.sendEmail_base('admin/registration/' + lang, user, tools.getAdminEmailByIdApp(idapp), mylocalsconf, '');

    if (tools.isManagAndAdminDifferent(idapp)) {
      this.sendEmail_base('admin/registration/' + lang, user, tools.getManagerEmailByIdApp(idapp), mylocalsconf, '');
    }
  },
  sendEmail_RequestNewPassword: function (lang, emailto, idapp, tokenforgot) {

    mylocalsconf = {
      locale: lang,
      nomeapp: tools.getNomeAppByIdApp(idapp),
      user: user,
      strlinksetpassword: this.getlinkRequestNewPassword(idapp, user, tokenforgot),
      emailto: emailto,
    };

    this.sendEmail_base('resetpwd/' + lang, user, emailto, mylocalsconf, '');
  },

  sendEmail_Booking: function (res, lang, emailto, user, idapp, recbooking) {

    tools.mylog('sendEmail_Booking');
    tools.mylog('tools.getNomeAppByIdApp(idapp)', tools.getNomeAppByIdApp(idapp), idapp);

    mylocalsconf = {
      locale: lang,
      nomeapp: tools.getNomeAppByIdApp(idapp),
      name: user.name,
      surname: user.surname,
      emailto: emailto,
      participants: '',
      msgbooking: recbooking.msgbooking,
      eventtextplain: tools.removeSpecialCharForEmail(recbooking.infoevent),
      event: recbooking.infoevent,
    };

    if (recbooking.numpeople > 1)
      mylocalsconf.participants = recbooking.numpeople.toString() + ' ' + res.__("partecipanti");

    let texthtml = '';
    if (recbooking.modified) {
      texthtml = 'modifybooking';
    }else {
      texthtml = 'makebooking';
    }

    this.sendEmail_base('booking/'+texthtml+'/' + lang, user, emailto, mylocalsconf, tools.getreplyToEmailByIdApp(idapp));

    // Send Email also to the Admin
    this.sendEmail_base('admin/'+texthtml+'/' + lang, user, tools.getAdminEmailByIdApp(idapp), mylocalsconf, '');

    if (tools.isManagAndAdminDifferent(idapp)) {
      this.sendEmail_base('admin/'+texthtml+'/' + lang, user, tools.getManagerEmailByIdApp(idapp), mylocalsconf, '');
    }

  },

  sendEmail_CancelBooking: function (res, lang, emailto, user, idapp, recbooking) {

    tools.mylog('sendEmail_CancelBooking');

    mylocalsconf = {
      locale: lang,
      nomeapp: tools.getNomeAppByIdApp(idapp),
      name: user.name,
      surname: user.surname,
      emailto: emailto,
      event: recbooking.infoevent,
      participants: '',
      eventtextplain: tools.removeSpecialCharForEmail(recbooking.infoevent),
    };

    if (recbooking.numpeople > 1)
      mylocalsconf.participants = recbooking.numpeople.toString() + ' ' + res.__("partecipanti");

    this.sendEmail_base('booking/cancelbooking/' + lang, user, emailto, mylocalsconf, tools.getreplyToEmailByIdApp(idapp));

    // Send Email also to the Admin
    this.sendEmail_base('admin/cancelbooking/' + lang, user, tools.getAdminEmailByIdApp(idapp), mylocalsconf, '');

    if (tools.isManagAndAdminDifferent(idapp)) {
      this.sendEmail_base('admin/cancelbooking/' + lang, user, tools.getManagerEmailByIdApp(idapp), mylocalsconf, '');
    }
  },

  sendEmail_Msg: function (res, lang, emailto, user, idapp, recmsg) {

    tools.mylog('sendEmail_Msg');
    tools.mylog('tools.getNomeAppByIdApp(idapp)', tools.getNomeAppByIdApp(idapp), idapp);

    mylocalsconf = {
      locale: lang,
      nomeapp: tools.getNomeAppByIdApp(idapp),
      name: user.name,
      surname: user.surname,
      usernameorig: user.name + ' ' + user.surname,
      emailto: emailto,
      message: recmsg.message,
      infoevent: recmsg.origin.infoevent,
      strlinkreply: tools.getHostByIdApp(idapp) + '/messages/' + recmsg._id
    };

    return this.sendEmail_base('msg/sendmsg/' + lang, user, emailto, mylocalsconf, tools.getreplyToEmailByIdApp(idapp));

    // Send Email also to the Admin
    // this.sendEmail_base('admin/sendmsg/' + lang, user, tools.getAdminEmailByIdApp(idapp), mylocalsconf);
  },


};