Add email notifications language localization feature

server/lib/emailLocalization.js

@@ -0,0 +1,58 @@
+// emailLocalization.js
+// Utility functions to handle email localization in Wekan
+
+import { TAPi18n } from '/imports/i18n';
+import { ReactiveCache } from '/imports/reactiveCache';
+
+// Main object for email localization utilities
+EmailLocalization = {
+  /**
+   * Send an email using the recipient's preferred language
+   * @param {Object} options - Standard email sending options plus language options
+   * @param {String} options.to - Recipient email address
+   * @param {String} options.from - Sender email address
+   * @param {String} options.subject - Email subject i18n key
+   * @param {String} options.text - Email text i18n key
+   * @param {Object} options.params - Parameters for i18n translation
+   * @param {String} options.language - Language code to use (if not provided, will try to detect)
+   * @param {String} options.userId - User ID to determine language (if not provided with language)
+   */
+  sendEmail(options) {
+    // Determine the language to use
+    let lang = options.language;
+
+    // If no language is specified but we have a userId, try to get the user's language
+    if (!lang && options.userId) {
+      const user = ReactiveCache.getUser(options.userId);
+      if (user) {
+        lang = user.getLanguage();
+      }
+    }
+
+    // If no language could be determined, use the site default
+    if (!lang) {
+      lang = TAPi18n.getLanguage() || 'en';
+    }
+
+    // Translate subject and text using the determined language
+    const subject = TAPi18n.__(options.subject, options.params || {}, lang);
+    let text = options.text;
+
+    // If text is an i18n key, translate it
+    if (typeof text === 'string' && text.startsWith('email-')) {
+      text = TAPi18n.__(text, options.params || {}, lang);
+    }
+
+    // Send the email with translated content
+    return Email.send({
+      to: options.to,
+      from: options.from || Accounts.emailTemplates.from,
+      subject: subject,
+      text: text,
+      html: options.html
+    });
+  }
+};
+
+// Add module.exports to make it accessible from other files
+module.exports = EmailLocalization;