const dotenv = require('dotenv').config();
const { getRealEstateTypeEnum } = require('./enums');
const { getRegionName, getMunicipalityName } = require('./codes');
const db = require('../models/index');
const { allRERequestByUiid } = require('./db/dbHelper');
var AWS = require('aws-sdk');
const TEMPLATE_NAME = "MarketAlertTemplateDevelop"

AWS.config.update({
  region: process.env.AMAZON_REGION,
  credentials:
  {
    accessKeyId: process.env.AMAZON_ACCES_KEY_ID,
    secretAccessKey: process.env.AMAZON_SECRET_ACCESS_KEY
  }
});

const sendTemplatedEmail = async (email, request) => {

  const params = {
    Destination: { /* required */
      CcAddresses: [
      ],
      ToAddresses: [
        email
      ]
    },
    Message: { /* required */
      Body: { /* required */
        Html: {
          Charset: "UTF-8",
          Data: getGreetingsEmailHTML(request)
        },
        Text: {
          Charset: "UTF-8",
          Data: getGreetingsEmaiTextVersion(request)
        }
      },
      Subject: {
        Charset: 'UTF-8',
        Data: `Javimi Potvrda: ${getSubject(request.realEstateType, request.region, request.municipality)}`
      }
    },
    Source: process.env.SOURCE_EMAIL, /* required */
    ReplyToAddresses: [
      process.env.SOURCE_EMAIL,
    ],
  };

  const sendEmailPromise = new AWS.SES({ apiVersion: '2010-12-01' }).sendEmail(params).promise();
  await sendEmailPromise;
}

const getGreetingsEmailHTML = (realestateRequest) => {
  const realEstateType = getRealEstateTypeEnum(realestateRequest.realEstateType);
  const gardenSize = realEstateType.hasGardenSize ? `<div><strong>Kvadratura okućnice: Od ${realestateRequest.gardenSizeMin} do ${realestateRequest.gardenSizeMax} m2  </strong></div>` : ``

  return `<h1> Zdravo, 
  Naručio/la si da ti javimo ako se nekretnina pojavi u oglasima. </h1>
  <h2> Ovo je tražena nekretnina:  </h2> 
  <div>
  <div> <strong>Tip nekretnine: ${realEstateType.title} </strong></div>
  <div><strong>Područje: ${getRegionName(realestateRequest.region)} </strong></div>
  <div><strong>Mjesto: ${getMunicipalityName(realestateRequest.region, realestateRequest.municipality)} </strong></div>
  <div><strong>Kvadratura nekretnine: Od ${realestateRequest.sizeMin} do ${realestateRequest.sizeMax} m2  </strong></div>
  ${gardenSize}
  <div><strong>Cijena: ${realestateRequest.priceMin} do ${realestateRequest.priceMax} KM  </strong></div>
  </div>
  <div> 

  </div>
  <div><strong> Ako želis prestati dobijati obavještenja za ovu pretragu klikni ${process.env.APP_URL}/odjava/${realestateRequest.uniqueId} </strong></div>
  <div><strong>Ako želiš promijeniti uslove pretrage klikni  ${process.env.APP_URL}/pregled/${realestateRequest.uniqueId} </strong></div>
<h4> Tvoj,
Javimi tim.  
</h4>`

}

const getGreetingsEmaiTextVersion = (realestateRequest) => {
  const realEstateType = getRealEstateTypeEnum(realestateRequest.realEstateType);
  const gardenSize = realEstateType.hasGardenSize ? "Kvadratura okućnice od " + realestateRequest.gardenSizeMin + " do " + realestateRequest.gardenSizeMax : ""

  const text = "Zdravo, \n Naručio/la si da ti javimo ako se nekretnina pojavi u oglasima \n Ovo je tražena nekretnina: \n , Tip nekretnine: "
    + realestateRequest.realEstateType + "\n Područje" + getRegionName(realestateRequest.region) + "\n Mjesto " + getMunicipalityName(realestateRequest.region, realestateRequest.municipality)
    + "\n Kvadratura nekretnine Od " + realestateRequest.sizeMin + " do " + realestateRequest.sizeMaX +
    + gardenSize
  "\n Cijena od " + realestateRequest.priceMin + " do " + realestateRequest.priceMax +
    "\n Ako želis prestati dobijati obavještenja za ovu pretragu klikni" + process.env.APP_URL + "/odjava/" + realestateRequest.uniqueId +
    "\n Ako želiš promijeniti uslove pretrage klikni " + process.env.APP_URL + "/odpregled/" + realestateRequest.uniqueId +
    "\n Tvoj,\n Javimi tim"

  return text;
}

const sendBulkEmail = async (marketAlerts) => {

  try {

    destinations = []
    groupedRERequests = [];


    let RERequestUuids = marketAlerts.map(marketAlert => marketAlert.request);

    RERequestUuids = Array.from(new Set(RERequestUuids));

    RERequestUuids = RERequestUuids.map(marketAlert => {
      return { uniqueId: marketAlert }
    });

    const RERequest = await allRERequestByUiid(RERequestUuids);
    const requestDataValues = [];

    RERequest.forEach(RERequest => {
      var formatedRequest = {};
      formatedRequest[RERequest.uniqueId] =
        requestDataValues[RERequest.uniqueId] = {
          realEstateType: RERequest.realEstateType,
          region: RERequest.region,
          municipality: RERequest.municipality
        };
    });

    marketAlerts.forEach(marketAlert => {

      const requestObject = {
        email: marketAlert.email,
        realEstateType: requestDataValues[marketAlert.request].realEstateType,
        municipality: requestDataValues[marketAlert.request].municipality,
        region: requestDataValues[marketAlert.request].region,
      }

      if (!groupedRERequests[marketAlert.request]) {
        groupedRERequests[marketAlert.request] = {
          requestObject: requestObject,
          marketAlertArray: []
        };
      }

      groupedRERequests[marketAlert.request].marketAlertArray.push({
        url: marketAlert.url,
        title: marketAlert.title,
      });
    });
    for (request in groupedRERequests) {

      const marketAlert = groupedRERequests[request];
      let extractedData = toAWSArray(marketAlert.marketAlertArray);
      const realEstateType = getRealEstateTypeEnum(marketAlert.requestObject.realEstateType).title;
      const region = getRegionName(marketAlert.requestObject.region);
      const municipality = getMunicipalityName(marketAlert.requestObject.region, marketAlert.requestObject.municipality);

      let repData = `{ "marketAlertUrl":[${extractedData}], "realestateType":"${realEstateType}", "region":"${region}", "municipality":"${municipality}" }`

      destinations.push({
        Destination: {
          ToAddresses: [
            marketAlert.requestObject.email
          ]
        },
        ReplacementTemplateData: repData
      })

    }
    console.log("AWS EMAIL : Bulk email replacement data:");
    console.log(destinations);

    var params = {
      Destinations:
        destinations,
      Source: process.env.SOURCE_EMAIL, /* required */
      Template: TEMPLATE_NAME, /* required */
      DefaultTemplateData: '{ \"REPLACEMENT_TAG_NAME\":\"REPLACEMENT_VALUE\" }',
      ReplyToAddresses: [
        process.env.SOURCE_EMAIL,
      ]
    };

    // Create the promise and SES service object
    const sendPromise = new AWS.SES({ apiVersion: '2010-12-01' }).sendBulkTemplatedEmail(params).promise();
    const awsResult = await sendPromise;
    console.log("AWS SES bulk email response");
    console.log(awsResult);


  } catch (e) {
    console.log("Could not send bulk email", e)
  }
}

const toAWSArray = (urlArray) => {

  let arrayString = ""
  urlArray.forEach(element => {
    const formatetdTitle = element.title.replace(/"/g, "");
    arrayString = arrayString + `{"url":"${element.url.trim()}" , "title":"${formatetdTitle}"},`
  });
  return arrayString.slice(0, -1);

}

const getNotificationEmailHtml = () => {
  return `<h2> Zdravo, 
  Pronašli smo nekretninu koju ste tražili. </h2>
  <h3> Ovo su tražene nekretnine:  </h3> 
  <div>
  <div>{{#each marketAlertUrl}}<li><a href="{{url}}">{{title}}</a></li><br />{{/each}}<div/> 
  <div/>
  </div>`
}

const getNotificationEmailText = () => {
  return ` Zdravo, 
  Pronašli smo nekretninu koju ste tražili.  Ovo su tražene nekretnine: {{#each marketAlertUrl}} {{url}} {{title}} {{/each}}`
}

const createMarketAlertEmailTemplate = async () => {
  const marketAlertTemplate = {
    Template: {
      TemplateName: TEMPLATE_NAME,
      SubjectPart: "Javi mi obavijest: {{realestateType}}, {{region}}, {{municipality}}",
      TextPart: getNotificationEmailText(),
      HtmlPart: getNotificationEmailHtml()
    }
  }

  try {
    const templatePromise = new AWS.SES({ apiVersion: '2010-12-01' }).updateTemplate(marketAlertTemplate).promise();
    await templatePromise

  } catch (e) {
    console.log("Could not create MarketAlertEmailTemplate", e);
  }
}

const getSubject = (realEstateType, region, municipality) => {
  return `${getRealEstateTypeEnum(realEstateType).title} ${getRegionName(region)}, ${getMunicipalityName(region, municipality)}`
}

module.exports = {
  sendTemplatedEmail,
  sendBulkEmail,
  createMarketAlertEmailTemplate
};