add Statistik component and API route

2026-05-10 14:55:27 +02:00
parent 58a4aeb984
commit 1451f45711
3 changed files with 258 additions and 4 deletions
@@ -0,0 +1,66 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { query } from '@/lib/db';
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url);
+  const kuppel = searchParams.get('kuppel') || 'West';
+  const year = parseInt(searchParams.get('year') || String(new Date().getFullYear()), 10);
+
+  try {
+    // 1) Monatliche Besucherzahlen nach ArtFuehrung
+    const monthlyRows = await query(
+      `SELECT
+         MONTH(Beginn) AS monat,
+         ArtFuehrung,
+         SUM(Besucher) AS besucher,
+         COUNT(*) AS anzahl
+       FROM logbuch
+       WHERE Kuppel = ? AND YEAR(Beginn) = ?
+       GROUP BY MONTH(Beginn), ArtFuehrung
+       ORDER BY monat, ArtFuehrung`,
+      [kuppel, year]
+    ) as { monat: number; ArtFuehrung: string; besucher: number; anzahl: number }[];
+
+    // 2) Kumulierte Besucher im Jahr
+    const cumulativeRows = await query(
+      `SELECT SUM(Besucher) AS total FROM logbuch WHERE Kuppel = ? AND YEAR(Beginn) = ?`,
+      [kuppel, year]
+    ) as { total: number | null }[];
+
+    // 3) Anzahl Führungstage (distinct Datum)
+    const tageRows = await query(
+      `SELECT COUNT(DISTINCT DATE(Beginn)) AS tage FROM logbuch WHERE Kuppel = ? AND YEAR(Beginn) = ?`,
+      [kuppel, year]
+    ) as { tage: number }[];
+
+    // 4) Kumulierte Besucher über alle Kuppeln
+    const allCumulativeRows = await query(
+      `SELECT SUM(Besucher) AS total FROM logbuch WHERE YEAR(Beginn) = ?`,
+      [year]
+    ) as { total: number | null }[];
+
+    // 5) Führungstage über alle Kuppeln
+    const allTageRows = await query(
+      `SELECT COUNT(DISTINCT DATE(Beginn)) AS tage FROM logbuch WHERE YEAR(Beginn) = ?`,
+      [year]
+    ) as { tage: number }[];
+
+    return NextResponse.json({
+      monthly: monthlyRows.map((r) => ({
+        monat: Number(r.monat),
+        ArtFuehrung: r.ArtFuehrung,
+        besucher: Number(r.besucher),
+        anzahl: Number(r.anzahl),
+      })),
+      cumulative: Number(cumulativeRows[0]?.total ?? 0),
+      tage: Number(tageRows[0]?.tage ?? 0),
+      allCumulative: Number(allCumulativeRows[0]?.total ?? 0),
+      allTage: Number(allTageRows[0]?.tage ?? 0),
+      year,
+      kuppel,
+    });
+  } catch (error) {
+    console.error('GET /api/statistik:', error);
+    return NextResponse.json({ error: 'Datenbankfehler' }, { status: 500 });
+  }
+}