Make emails translatable

src/mailer.js

@@ -34,6 +34,7 @@ var assert = require('assert'),
     safe = require('safetydance'),
     settings = require('./settings.js'),
     showdown = require('showdown'),
+    translation = require('./translation.js'),
     smtpTransport = require('nodemailer-smtp-transport'),
     util = require('util');
 
@@ -91,14 +92,21 @@ function sendMail(mailOptions, callback) {
     });
 }
 
-function render(templateFile, params) {
+function render(templateFile, params, translationAssets) {
     assert.strictEqual(typeof templateFile, 'string');
     assert.strictEqual(typeof params, 'object');
 
     var content = null;
+    var raw = safe.fs.readFileSync(path.join(MAIL_TEMPLATES_DIR, templateFile), 'utf8');
+    if (raw === null) {
+        debug(`Error loading ${templateFile}`);
+        return '';
+    }
+
+    if (typeof translationAssets === 'object') raw = translation.translate(raw, translationAssets.translations || {}, translationAssets.fallback || {});
 
     try {
-        content = ejs.render(safe.fs.readFileSync(path.join(MAIL_TEMPLATES_DIR, templateFile), 'utf8'), params);
+        content = ejs.render(raw, params);
     } catch (e) {
         debug(`Error rendering ${templateFile}`, e);
     }
@@ -135,24 +143,28 @@ function sendInvite(user, invitor, inviteLink) {
     getMailConfig(function (error, mailConfig) {
         if (error) return debug('Error getting mail details:', error);
 
-        var templateData = {
-            user: user,
-            webadminUrl: settings.adminOrigin(),
-            inviteLink: inviteLink,
-            invitor: invitor,
-            cloudronName: mailConfig.cloudronName,
-            cloudronAvatarUrl: settings.adminOrigin() + '/api/v1/cloudron/avatar'
-        };
+        translation.getTranslations(function (error, translationAssets) {
+            if (error) return debug('Error getting translations:', error);
 
-        var mailOptions = {
-            from: mailConfig.notificationFrom,
-            to: user.fallbackEmail,
-            subject: util.format('Welcome to %s', mailConfig.cloudronName),
-            text: render('welcome_user-text.ejs', templateData),
-            html: render('welcome_user-html.ejs', templateData)
-        };
+            var templateData = {
+                user: user,
+                webadminUrl: settings.adminOrigin(),
+                inviteLink: inviteLink,
+                invitor: invitor,
+                cloudronName: mailConfig.cloudronName,
+                cloudronAvatarUrl: settings.adminOrigin() + '/api/v1/cloudron/avatar'
+            };
 
-        sendMail(mailOptions);
+            var mailOptions = {
+                from: mailConfig.notificationFrom,
+                to: user.fallbackEmail,
+                subject: util.format('Welcome to %s', mailConfig.cloudronName),
+                text: render('welcome_user-text.ejs', templateData, translationAssets),
+                html: render('welcome_user-html.ejs', templateData, translationAssets)
+            };
+
+            sendMail(mailOptions);
+        });
     });
 }