erster Versuch mit Fahrkosten

app/MainClient.tsx

@@ -6,6 +6,7 @@ import type { Kuppel, LogbuchEintrag } from '@/types/logbuch';
 import LogbuchForm from '@/components/LogbuchForm';
 import LogbuchList from '@/components/LogbuchList';
 import Statistik from '@/components/Statistik';
+import Fahrkosten from '@/components/Fahrkosten';
 import packageJson from '@/package.json';
 
 interface Props {
@@ -17,7 +18,7 @@ interface Props {
 
 export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
   const [activeKuppel, setActiveKuppel] = useState<Kuppel>('West');
-  const [activeTab, setActiveTab] = useState<'eingabe' | 'liste' | 'statistik'>('eingabe');
+  const [activeTab, setActiveTab] = useState<'eingabe' | 'liste' | 'statistik' | 'fahrkosten'>('eingabe');
   const [refreshKey, setRefreshKey] = useState(0);
   const [editEntry, setEditEntry] = useState<LogbuchEintrag | null>(null);
 
@@ -92,7 +93,9 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
 
         {/* Eingabe/Liste/Statistik-Tabs */}
         <div className="flex gap-1 mb-3 border-b border-gray-200 print:hidden">
-          {(['eingabe', 'liste', 'statistik'] as const).map((tab) => (
+          {(['eingabe', 'liste', 'statistik', 'fahrkosten'] as const)
+            .filter((tab) => tab !== 'fahrkosten' || role?.includes('admin') || role?.includes('master'))
+            .map((tab) => (
             <button
               key={tab}
               onClick={() => { setActiveTab(tab); if (tab === 'eingabe') setEditEntry(null); }}
@@ -102,7 +105,7 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
                   : 'border-transparent text-gray-500 hover:text-gray-700'
               }`}
             >
-              {tab === 'eingabe' ? 'Eingabe' : tab === 'liste' ? 'Liste' : 'Statistik'}
+              {tab === 'eingabe' ? 'Eingabe' : tab === 'liste' ? 'Liste' : tab === 'statistik' ? 'Statistik' : 'Fahrkosten'}
             </button>
           ))}
         </div>
@@ -183,6 +186,22 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
           </div>
         )}
 
+        {/* Fahrkosten-Tab */}
+        {activeTab === 'fahrkosten' && (role?.includes('admin') || role?.includes('master')) && (
+          <div className="border-2 border-gray-400 rounded-xl bg-white p-3 print:border-0 print:rounded-none print:p-0">
+            <div className="flex justify-between items-center mb-2 print:hidden">
+              <span className="text-sm font-semibold text-gray-600">Fahrkostenabrechnung</span>
+              <button
+                onClick={() => window.print()}
+                className="text-sm px-3 py-1.5 bg-gray-200 hover:bg-gray-300 text-gray-700 rounded-lg"
+              >
+                🖨 Drucken
+              </button>
+            </div>
+            <Fahrkosten />
+          </div>
+        )}
+
         <footer className="mt-6 grid grid-cols-3 items-center text-xs sm:text-sm text-gray-600 px-1 sm:px-4 print:hidden">
           <div>
             <a href="mailto:rxf@gmx.de" className="text-blue-600 hover:underline">

app/api/fahrkosten/route.ts

@@ -0,0 +1,42 @@
+import { NextResponse } from 'next/server';
+import { query } from '@/lib/db';
+import { getSession } from '@/lib/session';
+
+export interface FahrkostenRow {
+  ID: number;
+  Kuerzel: string;
+  Name: string;
+  Anzahl: number;
+}
+
+const EXCLUDED = "'PrF','Beob','BEOS','TD','ToT'";
+
+export async function GET(req: Request) {
+  const session = await getSession();
+  if (!session) return NextResponse.json({ error: 'Nicht angemeldet' }, { status: 401 });
+
+  const { searchParams } = new URL(req.url);
+  const ab = searchParams.get('ab');
+  if (!ab || !/^\d{4}-\d{2}-\d{2}$/.test(ab)) {
+    return NextResponse.json({ error: 'Parameter ab (YYYY-MM-DD) fehlt' }, { status: 400 });
+  }
+
+  try {
+    const rows = await query(
+      'SELECT b.id AS ID, b.`kürzel` AS Kuerzel,' +
+      ' CONCAT(IFNULL(b.vorname, \'\'), IF(b.vorname IS NOT NULL, \' \', \'\'), b.name) AS Name,' +
+      ' COUNT(DISTINCT l.ID) AS Anzahl' +
+      ' FROM beos b' +
+      ' JOIN logbuch_beos lb ON lb.BeoID = b.id' +
+      ' JOIN logbuch l ON l.ID = lb.LogbuchID' +
+      ' WHERE l.Beginn >= ? AND l.ArtFuehrung NOT IN (' + EXCLUDED + ')' +
+      ' GROUP BY b.id, b.`kürzel`, b.name, b.vorname' +
+      ' ORDER BY b.name ASC',
+      [ab + ' 00:00:00']
+    ) as FahrkostenRow[];
+    return NextResponse.json(rows);
+  } catch (error) {
+    console.error('GET /api/fahrkosten:', error);
+    return NextResponse.json({ error: 'Datenbankfehler' }, { status: 500 });
+  }
+}