@hyperbytes/wappler-imap-manager/server_connect/modules/imapstore.js

IMAP eMail Management for Wappler

const Imap = require('imap');
const { simpleParser } = require('mailparser');

exports.imapgetrawheaders = async function (options) {
    return new Promise((resolve, reject) => {
        const imap = new Imap({
            user: options.imap_user,
            password: options.imap_password,
            host: options.imap_host,
            port: options.imap_port,
            tls: true,
            tlsOptions: {
                rejectUnauthorized: process.env.IMAP_CERTIFICATE_OVERRIDE === '1' ? false : true
            }

        });

        imap.once('ready', () => {
            imap.openBox(options.mailbox, false, (err, box) => { // Fixed `mailbox` reference
                if (err) {
                    imap.end();
                    return reject(`Error opening mailbox: ${err.message}`);
                }

                if (box.messages.total === 0) {
                    imap.end();
                    return reject('No messages found.');
                }

                imap.search(['ALL'], (err, results) => {
                    if (err || results.length === 0) {
                        imap.end();
                        return reject('No messages available.');
                    }

                    const fetch = imap.fetch([results[0]], { bodies: 'HEADER' });

                    fetch.on('message', (msg) => {
                        let headerData = '';

                        msg.on('body', (stream) => {
                            stream.on('data', (chunk) => {
                                headerData += chunk.toString();
                            });

                            stream.on('end', async () => {
                                try {
                                    const parsed = await simpleParser(headerData);
                                    resolve(parsed.headers);
                                } catch (error) {
                                    reject(`Error parsing headers: ${error.message}`);
                                }
                            });
                        });
                    });

                    fetch.once('error', (err) => reject(`Fetch error: ${err.message}`));
                    fetch.once('end', () => imap.end());
                });
            });
        });

        imap.once('error', (err) => reject(`IMAP Error: ${err.message}`));
        imap.once('end', () => console.log('IMAP connection closed.'));
        imap.connect();
    });
};