Add button to send test email

Fixes #419

src/mail_templates/test.ejs

@@ -0,0 +1,11 @@
+<%if (format === 'text') { %>
+
+Test Email from <%= fqdn %>,
+
+if you can read this, your Cloudron email settings are good.
+
+Sent at: <%= new Date().toUTCString() %>
+
+<% } else { %>
+
+<% } %>

src/mailer.js

@@ -30,6 +30,8 @@ exports = module.exports = {
     FEEDBACK_TYPE_UPGRADE_REQUEST: 'upgrade_request',
     sendFeedback: sendFeedback,
 
+    sendTestMail: sendTestMail,
+
     _getMailQueue: _getMailQueue,
     _clearMailQueue: _clearMailQueue
 };
@@ -552,8 +554,8 @@ function sendFeedback(user, type, subject, description) {
         type === exports.FEEDBACK_TYPE_UPGRADE_REQUEST ||
         type === exports.FEEDBACK_TYPE_APP_ERROR);
 
-    var mailOptions = {
-        from: mailConfig().from,
+        var mailOptions = {
+            from: mailConfig().from,
         to: 'support@cloudron.io',
         subject: util.format('[%s] %s - %s', type, config.fqdn(), subject),
         text: render('feedback.ejs', { fqdn: config.fqdn(), type: type, user: user, subject: subject, description: description, format: 'text'})
@@ -562,6 +564,19 @@ function sendFeedback(user, type, subject, description) {
     enqueue(mailOptions);
 }
 
+function sendTestMail(email) {
+    assert.strictEqual(typeof email, 'string');
+
+    var mailOptions = {
+        from: mailConfig().from,
+        to: email,
+        subject: util.format('Test Email from %s', config.fqdn()),
+        text: render('test.ejs', { fqdn: config.fqdn(), format: 'text'})
+    };
+
+    enqueue(mailOptions);
+}
+
 function _getMailQueue() {
     return gMailQueue;
 }

src/routes/cloudron.js

@@ -15,7 +15,8 @@ exports = module.exports = {
     feedback: feedback,
     checkForUpdates: checkForUpdates,
     getLogs: getLogs,
-    getLogStream: getLogStream
+    getLogStream: getLogStream,
+    sendTestMail: sendTestMail
 };
 
 var assert = require('assert'),
@@ -301,3 +302,13 @@ function getLogStream(req, res, next) {
         logStream.on('error', res.end.bind(res, null));
     });
 }
+
+function sendTestMail(req, res, next) {
+    assert.strictEqual(typeof req.body, 'object');
+
+    if (!req.body.email || typeof req.body.email !== 'string') return next(new HttpError(400, 'email must be a non-empty string'));
+
+    mailer.sendTestMail(req.body.email);
+
+    next(new HttpSuccess(202));
+}

src/server.js

@@ -124,7 +124,8 @@ function initializeExpressSync() {
     router.put ('/api/v1/cloudron/ssh/authorized_keys', cloudronScope, routes.user.requireAdmin, routes.ssh.addAuthorizedKey);
     router.get ('/api/v1/cloudron/ssh/authorized_keys/:identifier', cloudronScope, routes.user.requireAdmin, routes.ssh.getAuthorizedKey);
     router.del ('/api/v1/cloudron/ssh/authorized_keys/:identifier', cloudronScope, routes.user.requireAdmin, routes.ssh.delAuthorizedKey);
-    router.get ('/api/v1/cloudron/eventlog', settingsScope, routes.user.requireAdmin, routes.eventlog.get);
+    router.get ('/api/v1/cloudron/eventlog', cloudronScope, routes.user.requireAdmin, routes.eventlog.get);
+    router.post('/api/v1/cloudron/send_test_mail',  cloudronScope, routes.user.requireAdmin, routes.cloudron.sendTestMail);
 
     // profile api, working off the user behind the provided token
     router.get ('/api/v1/profile', profileScope, routes.profile.get);