perfect but the email template has to have an attached pdf where the es

src/app/api/settings/smtp/route.ts

@@ -0,0 +1,45 @@
+
+import { NextRequest, NextResponse } from 'next/server';
+import db from '@/lib/db';
+
+export async function GET(req: NextRequest) {
+  try {
+    const stmt = db.prepare("SELECT key, value FROM settings WHERE key LIKE 'smtp_%'");
+    const settings = stmt.all() as { key: string, value: string }[];
+    const result = settings.reduce((acc, setting) => {
+        acc[setting.key] = setting.value;
+        return acc;
+    }, {} as Record<string, string>);
+    return NextResponse.json(result);
+  } catch (error) {
+    console.error('Failed to get SMTP settings:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+export async function POST(req: NextRequest) {
+  try {
+    const settings = await req.json();
+    
+    const requiredKeys = ['smtp_server', 'smtp_port', 'smtp_username', 'smtp_password'];
+    for(const key of requiredKeys) {
+        if(typeof settings[key] === 'undefined') {
+            return NextResponse.json({ message: `Missing required setting: ${key}` }, { status: 400 });
+        }
+    }
+
+    const stmt = db.prepare('INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)');
+    const transaction = db.transaction((settingsToSave) => {
+      for (const key in settingsToSave) {
+        stmt.run(key, settingsToSave[key]);
+      }
+    });
+
+    transaction(settings);
+    
+    return NextResponse.json({ message: 'SMTP settings updated successfully' });
+  } catch (error) {
+    console.error('Failed to update SMTP settings:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}