300 lines
13 KiB
JavaScript
300 lines
13 KiB
JavaScript
'use strict';
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let log = require('npmlog');
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let config = require('config');
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let db = require('../lib/db');
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let tools = require('../lib/tools');
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let mailer = require('../lib/mailer');
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let campaigns = require('../lib/models/campaigns');
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let segments = require('../lib/models/segments');
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let lists = require('../lib/models/lists');
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let fields = require('../lib/models/fields');
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let settings = require('../lib/models/settings');
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let links = require('../lib/models/links');
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let shortid = require('shortid');
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let url = require('url');
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function findUnsent(callback) {
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db.getConnection((err, connection) => {
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if (err) {
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return callback(err);
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}
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let query = 'SELECT id, list, segment FROM campaigns WHERE status=? LIMIT 1';
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connection.query(query, [2], (err, rows) => {
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if (err) {
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connection.release();
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return callback(err);
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}
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if (!rows || !rows.length) {
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connection.release();
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return callback(null, false);
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}
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let campaign = tools.convertKeys(rows[0]);
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let getSegmentQuery = (segmentId, next) => {
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segmentId = Number(segmentId);
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if (!segmentId) {
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return next(null, {
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where: '',
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values: []
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});
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}
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segments.getQuery(segmentId, next);
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};
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getSegmentQuery(campaign.segment, (err, queryData) => {
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if (err) {
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return callback(err);
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}
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let tryNext = () => {
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let query = 'SELECT * FROM `subscription__' + campaign.list + '` subscription WHERE status=1 ' + (queryData.where ? ' AND (' + queryData.where + ')' : '') + ' AND NOT EXISTS (SELECT 1 FROM `campaign__' + campaign.id + '` campaign WHERE campaign.list = ? AND campaign.segment = ? AND campaign.subscription = subscription.id) LIMIT 1';
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connection.query(query, queryData.values.concat([campaign.list, campaign.segment]), (err, rows) => {
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if (err) {
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connection.release();
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return callback(err);
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}
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if (!rows || !rows.length) {
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// everything already processed for this campaign
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return connection.query('UPDATE campaigns SET `status`=3, `status_change`=NOW() WHERE id=? LIMIT 1', [campaign.id], () => {
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connection.release();
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return callback(null, false);
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});
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}
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let subscription = tools.convertKeys(rows[0]);
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let query = 'INSERT INTO `campaign__' + campaign.id + '` (list, segment, subscription) VALUES(?, ?,?)';
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connection.query(query, [campaign.list, campaign.segment, subscription.id], (err, result) => {
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if (err) {
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if (err.code === 'ER_DUP_ENTRY') {
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// race condition, try next one
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return tryNext();
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}
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connection.release();
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return callback(err);
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}
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connection.release();
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subscription.campaign = campaign.id;
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callback(null, {
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id: result.insertId,
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listId: campaign.list,
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campaignId: campaign.id,
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subscription
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});
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});
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});
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};
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tryNext();
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});
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});
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});
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}
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function formatMessage(message, callback) {
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campaigns.get(message.campaignId, false, (err, campaign) => {
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if (err) {
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return callback(err);
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}
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if (!campaign) {
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return callback(new Error('Campaign not found'));
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}
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lists.get(message.listId, (err, list) => {
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if (err) {
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return callback(err);
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}
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if (!list) {
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return callback(new Error('List not found'));
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}
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settings.list(['serviceUrl', 'verpUse', 'verpHostname'], (err, configItems) => {
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if (err) {
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return callback(err);
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}
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let useVerp = config.verp.enabled && configItems.verpUse && configItems.verpHostname;
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fields.list(list.id, (err, fieldList) => {
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if (err) {
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return callback(err);
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}
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message.subscription.mergeTags = {
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EMAIL: message.subscription.email,
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FIRST_NAME: message.subscription.firstName,
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LAST_NAME: message.subscription.lastName,
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FULL_NAME: [].concat(message.subscription.firstName || []).concat(message.subscription.lastName || []).join(' ')
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};
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fields.getRow(fieldList, message.subscription, true, true).forEach(field => {
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if (field.mergeTag) {
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message.subscription.mergeTags[field.mergeTag] = field.mergeValue || '';
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}
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if (field.options) {
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field.options.forEach(subField => {
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if (subField.mergeTag) {
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message.subscription.mergeTags[subField.mergeTag] = subField.mergeValue || '';
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}
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});
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}
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});
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links.updateLinks(campaign, list, message.subscription, configItems.serviceUrl, campaign.html, (err, html) => {
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if (err) {
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return callback(err);
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}
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// replace data: images with embedded attachments
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let attachments = [];
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html = html.replace(/(<img\b[^>]* src\s*=[\s"']*)(data:[^"'>\s]+)/gi, (match, prefix, dataUri) => {
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let cid = shortid.generate() + '-attachments@' + campaign.address.split('@').pop();
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attachments.push({
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path: dataUri,
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cid
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});
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return prefix + 'cid:' + cid;
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});
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let campaignAddress = [campaign.cid, list.cid, message.subscription.cid].join('.');
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return callback(null, {
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from: {
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name: campaign.from,
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address: campaign.address
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},
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xMailer: 'Mailtrain Mailer (+https://mailtrain.org)',
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to: {
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name: [].concat(message.subscription.firstName || []).concat(message.subscription.lastName || []).join(' '),
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address: message.subscription.email
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},
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sender: useVerp ? campaignAddress + '@' + configItems.verpHostname : false,
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envelope: useVerp ? {
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from: campaignAddress + '@' + configItems.verpHostname,
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to: message.subscription.email
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} : false,
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headers: {
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'x-fbl': campaignAddress,
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// custom header for SparkPost
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'x-msys-api': JSON.stringify({
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campaign_id: campaignAddress
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}),
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// custom header for SendGrid
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'x-smtpapi': JSON.stringify({
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unique_args: {
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campaign_id: campaignAddress
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}
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}),
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// custom header for Mailgun
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'x-mailgun-variables': JSON.stringify({
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campaign_id: campaignAddress
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}),
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'List-ID': {
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prepared: true,
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value: '"' + list.name.replace(/[^a-z0-9\s'.,\-]/g, '').trim() + '" <' + list.cid + '.' + (url.parse(configItems.serviceUrl).hostname || 'localhost') + '>'
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}
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},
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list: {
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unsubscribe: url.resolve(configItems.serviceUrl, '/subscription/' + list.cid + '/unsubscribe/' + message.subscription.cid + '?auto=yes')
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},
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subject: tools.formatMessage(configItems.serviceUrl, campaign, list, message.subscription, campaign.subject),
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html: tools.formatMessage(configItems.serviceUrl, campaign, list, message.subscription, html),
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text: tools.formatMessage(configItems.serviceUrl, campaign, list, message.subscription, campaign.text),
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attachments
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});
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});
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});
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});
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});
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});
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}
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let sendLoop = () => {
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mailer.getMailer(err => {
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if (err) {
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log.error('Mail', err.stack);
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return setTimeout(sendLoop, 10 * 1000);
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}
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let getNext = () => {
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if (!mailer.transport.isIdle()) {
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// only retrieve new messages if there are free slots in the mailer queue
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return;
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}
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// find an unsent message
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findUnsent((err, message) => {
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if (err) {
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log.error('Mail', err.stack);
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setTimeout(getNext, 5 * 1000);
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return;
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}
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if (!message) {
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setTimeout(getNext, 5 * 1000);
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return;
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}
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//log.verbose('Mail', 'Found new message to be delivered: %s', message.subscription.cid);
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// format message to nodemailer message format
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formatMessage(message, (err, mail) => {
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if (err) {
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log.error('Mail', err.stack);
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setTimeout(getNext, 5 * 1000);
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return;
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}
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// send the message
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mailer.transport.sendMail(mail, (err, info) => {
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if (err) {
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log.error('Mail', err.stack);
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}
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let status = err ? 2 : 1;
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let response = err && (err.response || err.message) || info.response;
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let responseId = response.split(/\s+/).pop();
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db.getConnection((err, connection) => {
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if (err) {
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log.error('Mail', err.stack);
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return;
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}
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let query = 'UPDATE `campaigns` SET `delivered`=`delivered`+1 ' + (status === 2 ? ', `bounced`=`bounced`+1 ' : '') + ' WHERE id=? LIMIT 1';
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connection.query(query, [message.campaignId], err => {
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if (err) {
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log.error('Mail', err.stack);
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}
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let query = 'UPDATE `campaign__' + message.campaignId + '` SET status=?, response=?, response_id=?, updated=NOW() WHERE id=? LIMIT 1';
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connection.query(query, [status, response, responseId, message.id], err => {
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connection.release();
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if (err) {
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log.error('Mail', err.stack);
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} else {
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// log.verbose('Mail', 'Message sent and status updated for %s', message.subscription.cid);
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}
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});
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});
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});
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});
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setImmediate(getNext);
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});
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});
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};
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mailer.transport.on('idle', getNext);
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});
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};
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module.exports = callback => {
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sendLoop();
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setImmediate(callback);
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};
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