const path = require("path");
require("dotenv").config({
  path: path.resolve(
    process.cwd(),
    `.env.${process.env.NODE_ENV || "development"}`
  ),
});
const axios = require("axios");
let nodemailer = require("nodemailer");
let aws = require("aws-sdk");
const logger = require("../utils/logger");
const ses = new aws.SES({
  apiVersion: "2010-12-01",
  region: "ca-central-1",
});

let transporter = nodemailer.createTransport({
  SES: { ses, aws },
});

exports.sendEmail = async (req, res) => {
  logger.log("send-email", "DEBUG", req.user.email, null, {
    from: `${req.body.from.name} <${req.body.from.address}>`,
    replyTo: req.body.ReplyTo.Email,
    to: req.body.to,
    cc: req.body.cc,
    subject: req.body.subject,
  });

  let downloadedMedia = [];
  if (req.body.media && req.body.media.length > 0) {
    downloadedMedia = await Promise.all(
      req.body.media.map((m) => {
        try {
          return getImage(m);
        } catch (error) {
          logger.log("send-email-error", "ERROR", req.user.email, null, {
            from: `${req.body.from.name} <${req.body.from.address}>`,
            replyTo: req.body.ReplyTo.Email,
            to: req.body.to,
            cc: req.body.cc,
            subject: req.body.subject,
            error,
          });
        }
      })
    );
  }

  transporter.sendMail(
    {
      from: `${req.body.from.name} <${req.body.from.address}>`,
      replyTo: req.body.ReplyTo.Email,
      to: req.body.to,
      cc: req.body.cc,
      subject: req.body.subject,
      attachments:
        [
          ...((req.body.attachments &&
            req.body.attachments.map((a) => {
              return {
                filename: a.filename,
                path: a.path,
              };
            })) ||
            []),
          ...downloadedMedia.map((a) => {
            return {
              path: a,
            };
          }),
        ] || null,
      html: req.body.html,
      ses: {
        // optional extra arguments for SendRawEmail
        Tags: [
          {
            Name: "tag_name",
            Value: "tag_value",
          },
        ],
      },
    },
    (err, info) => {
      console.log(err || info);
      if (info) {
        logger.log("send-email-success", "DEBUG", req.user.email, null, {
          from: `${req.body.from.name} <${req.body.from.address}>`,
          replyTo: req.body.ReplyTo.Email,
          to: req.body.to,
          cc: req.body.cc,
          subject: req.body.subject,
          info,
        });

        res.json({ success: true, response: info });
      } else {
        logger.log("send-email-failure", "ERROR", req.user.email, null, {
          from: `${req.body.from.name} <${req.body.from.address}>`,
          replyTo: req.body.ReplyTo.Email,
          to: req.body.to,
          cc: req.body.cc,
          subject: req.body.subject,
          error: err,
        });

        res.json({ success: false, error: err });
      }
    }
  );
};

async function getImage(imageUrl) {
  let image = await axios.get(imageUrl, { responseType: "arraybuffer" });
  let raw = Buffer.from(image.data).toString("base64");
  return "data:" + image.headers["content-type"] + ";base64," + raw;
}