New federation features

server/config/mailer.js

@@ -68,3 +68,45 @@ export async function sendVerificationEmail(to, name, verifyUrl, appName = 'Redl
     text: `Hey ${name},\n\nPlease verify your email: ${verifyUrl}\n\nThis link is valid for 24 hours.\n\n– ${appName}`,
   });
 }
+
+/**
+ * Send a federation meeting invitation email.
+ * @param {string} to          – recipient email
+ * @param {string} name        – recipient display name
+ * @param {string} fromUser    – sender federated address (user@domain)
+ * @param {string} roomName    – name of the invited room
+ * @param {string} message     – optional personal message
+ * @param {string} inboxUrl    – URL to the federation inbox
+ * @param {string} appName     – branding app name (default "Redlight")
+ */
+export async function sendFederationInviteEmail(to, name, fromUser, roomName, message, inboxUrl, appName = 'Redlight') {
+  if (!transporter) return; // silently skip if SMTP not configured
+
+  const from = process.env.SMTP_FROM || process.env.SMTP_USER;
+
+  await transporter.sendMail({
+    from: `"${appName}" <${from}>`,
+    to,
+    subject: `${appName} – Meeting invitation from ${fromUser}`,
+    html: `
+      <div style="font-family:Arial,sans-serif;max-width:520px;margin:0 auto;padding:32px;background:#1e1e2e;color:#cdd6f4;border-radius:12px;">
+        <h2 style="color:#cba6f7;margin-top:0;">Hey ${name} 👋</h2>
+        <p>You have received a meeting invitation from <strong style="color:#cdd6f4;">${fromUser}</strong>.</p>
+        <div style="background:#313244;border-radius:8px;padding:16px;margin:20px 0;">
+          <p style="margin:0 0 8px 0;font-size:13px;color:#7f849c;">Room:</p>
+          <p style="margin:0;font-size:16px;font-weight:bold;color:#cdd6f4;">${roomName}</p>
+          ${message ? `<p style="margin:12px 0 0 0;font-size:13px;color:#a6adc8;font-style:italic;">"${message}"</p>` : ''}
+        </div>
+        <p style="text-align:center;margin:28px 0;">
+          <a href="${inboxUrl}"
+             style="display:inline-block;background:#cba6f7;color:#1e1e2e;padding:12px 32px;border-radius:8px;text-decoration:none;font-weight:bold;">
+            View Invitation
+          </a>
+        </p>
+        <hr style="border:none;border-top:1px solid #313244;margin:24px 0;"/>
+        <p style="font-size:12px;color:#585b70;">Open the link above to accept or decline the invitation.</p>
+      </div>
+    `,
+    text: `Hey ${name},\n\nYou have received a meeting invitation from ${fromUser}.\nRoom: ${roomName}${message ? `\nMessage: "${message}"` : ''}\n\nView invitation: ${inboxUrl}\n\n– ${appName}`,
+  });
+}