"use strict";
const {
  matchRealEstates,
  matchSearchRequest
} = require("../services/searchMatchService");
const {
  generateNotificationEmail,
  generateNewSearchRequestEmail,
  generateEmailSubject
} = require("../helpers/emailContentGenerator");
const { sendEmail } = require("../services/emailService");

const notifyForNewRealEstates = async newRealEstates => {
  const matches = await matchRealEstates(newRealEstates);
  await notifyMatches(matches);
};

const notifyForNewSearchRequest = async searchRequest => {
  const matches = await matchSearchRequest(searchRequest);

  const searchRequestId = searchRequest.id;
  const matchingRealEstates = matches[searchRequestId].realEstates;

  const emailContent = generateNewSearchRequestEmail(
    searchRequest,
    matchingRealEstates
  );
  const { email } = searchRequest;
  await sendEmail(email, "Kivi - novi zahtjev za pretragu", emailContent);
};

const notifyMatches = async matches => {
  const searchRequestsToNotify = Object.keys(matches);

  const asyncSendEmailActions = [];
  for (const id of searchRequestsToNotify) {
    const { searchRequest } = matches[id];
    const { email } = searchRequest;
    const allMatchingRealEstates = matches[id].realEstates || [];
    if (allMatchingRealEstates.length > 0) {
      const emailContent = generateNotificationEmail(
        allMatchingRealEstates,
        id
      );
      const emailSubject = generateEmailSubject(
        allMatchingRealEstates.length,
        allMatchingRealEstates[0].title
      );

      const sendEmailPromise = sendEmail(email, emailSubject, emailContent);
      asyncSendEmailActions.push(sendEmailPromise);
      sendEmailPromise.catch(err => console.log("[Email Sending Failed]", err));
    }
  }

  await Promise.all(asyncSendEmailActions);
};

module.exports = {
  notifyForNewRealEstates,
  notifyForNewSearchRequest
};