Initial import

lib/mailer.js

@@ -0,0 +1,98 @@
+'use strict';
+
+let log = require('npmlog');
+
+let nodemailer = require('nodemailer');
+let settings = require('./models/settings');
+let Handlebars = require('handlebars');
+let fs = require('fs');
+let path = require('path');
+let templates = new Map();
+
+module.exports.transport = false;
+
+
+module.exports.update = () => {
+    createMailer(() => false);
+};
+
+module.exports.getMailer = callback => {
+    if (!module.exports.transport) {
+        return createMailer(callback);
+    }
+    callback(null, module.exports.transport);
+};
+
+module.exports.sendMail = (mail, template, callback) => {
+    if (!callback && typeof template === 'function') {
+        callback = template;
+        template = false;
+    }
+
+    if (!module.exports.transport) {
+        return createMailer(err => {
+            if (err) {
+                return callback(err);
+            }
+            return module.exports.sendMail(mail, template, callback);
+        });
+    }
+
+    if (!template || !template.template) {
+        return module.exports.transport.sendMail(mail, callback);
+    }
+
+    getTemplate(template.template, (err, renderer) => {
+        if (err) {
+            return callback(err);
+        }
+        mail.html = renderer(template.data || {});
+        module.exports.transport.sendMail(mail, callback);
+    });
+
+};
+
+function getTemplate(template, callback) {
+    if (templates.has(template)) {
+        return callback(null, templates.get(template));
+    }
+    fs.readFile(path.join(__dirname, '..', 'views', template), 'utf-8', (err, source) => {
+        if (err) {
+            return callback(err);
+        }
+        let renderer = Handlebars.compile(source);
+        templates.set(template, renderer);
+        return callback(null, renderer);
+    });
+}
+
+function createMailer(callback) {
+    settings.list(['smtpHostname', 'smtpPort', 'smtpEncryption', 'smtpUser', 'smtpPass', 'smtpLog', 'smtpMaxConnections', 'smtpMaxMessages'], (err, configItems) => {
+        if (err) {
+            return callback(err);
+        }
+        module.exports.transport = nodemailer.createTransport({
+            pool: true,
+            host: configItems.smtpHostname,
+            port: Number(configItems.smtpPort) || false,
+            secure: configItems.smtpEncryption === 'TLS',
+            ignoreTLS: configItems.smtpEncryption === 'NONE',
+            auth: {
+                user: configItems.smtpUser,
+                pass: configItems.smtpPass
+            },
+            debug: !!configItems.smtpLog,
+            logger: !configItems.smtpLog ? false : {
+                debug: log.info.bind(log, 'Mail'),
+                info: log.verbose.bind(log, 'Mail'),
+                error: log.info.bind(log, 'Mail')
+            },
+            maxConnections: Number(configItems.smtpMaxConnections),
+            maxMessages: Number(configItems.smtpMaxMessages)
+        });
+
+        return callback(null, module.exports.transport);
+    });
+}
+
+module.exports.getTemplate = getTemplate;