first commit

app/api/mqtt/send-credentials/route.ts

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+import { NextResponse } from 'next/server';
+import { auth } from '@/lib/auth';
+import { emailService } from '@/lib/email-service';
+import { deviceDb, userDb } from '@/lib/db';
+
+// POST /api/mqtt/send-credentials - Send MQTT credentials via email
+export async function POST(request: Request) {
+  try {
+    const session = await auth();
+
+    if (!session?.user) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+    }
+
+    // Only admins can send credentials
+    if ((session.user as any).role !== 'ADMIN') {
+      return NextResponse.json({ error: 'Forbidden' }, { status: 403 });
+    }
+
+    const body = await request.json();
+    const { deviceId, mqttUsername, mqttPassword } = body;
+
+    if (!deviceId || !mqttUsername || !mqttPassword) {
+      return NextResponse.json(
+        { error: 'Missing required fields: deviceId, mqttUsername, mqttPassword' },
+        { status: 400 }
+      );
+    }
+
+    // Get device info
+    const device = deviceDb.findById(deviceId);
+    if (!device) {
+      return NextResponse.json({ error: 'Device not found' }, { status: 404 });
+    }
+
+    // Get device owner
+    if (!device.ownerId) {
+      return NextResponse.json(
+        { error: 'Device has no owner assigned' },
+        { status: 400 }
+      );
+    }
+
+    const owner = userDb.findById(device.ownerId);
+    if (!owner) {
+      return NextResponse.json(
+        { error: 'Device owner not found' },
+        { status: 404 }
+      );
+    }
+
+    if (!owner.email) {
+      return NextResponse.json(
+        { error: 'Device owner has no email address' },
+        { status: 400 }
+      );
+    }
+
+    // Parse broker URL from environment or use default
+    const brokerUrl = process.env.MQTT_BROKER_URL || 'mqtt://localhost:1883';
+    const brokerHost = brokerUrl.replace(/^mqtt:\/\//, '').replace(/:\d+$/, '');
+    const brokerPortMatch = brokerUrl.match(/:(\d+)$/);
+    const brokerPort = brokerPortMatch ? brokerPortMatch[1] : '1883';
+
+    // Send email
+    await emailService.sendMqttCredentialsEmail({
+      email: owner.email,
+      deviceName: device.name,
+      deviceId: device.id,
+      mqttUsername,
+      mqttPassword,
+      brokerUrl,
+      brokerHost,
+      brokerPort,
+    });
+
+    console.log(`[MQTT] Credentials sent via email to ${owner.email} for device ${device.name}`);
+
+    return NextResponse.json({
+      success: true,
+      message: `Credentials sent to ${owner.email}`,
+    });
+  } catch (error) {
+    console.error('Error sending MQTT credentials email:', error);
+    return NextResponse.json(
+      { error: error instanceof Error ? error.message : 'Failed to send email' },
+      { status: 500 }
+    );
+  }
+}