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app/api/data/route.ts

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+import { NextRequest, NextResponse } from 'next/server';
+import type { RowDataPacket } from 'mysql2';
+import pool from '@/lib/mysql';
+import { checkAblauf } from '@/lib/checkAblauf';
+import moment from 'moment';
+import { Tablette, DataResponse } from '@/types/tablette';
+
+function formatDate(dt: Date | string | null): string {
+  if (!dt) return '';
+  const d = moment(dt);
+  if (!d.isValid() || d.isBefore(moment('2020-01-01'))) return '';
+  return d.format('YYYY-MM-DD');
+}
+
+const SORT_WHITELIST = new Set(['tab', 'pday', 'cnt', 'at', 'akt', 'until', 'warn', 'rem', 'order']);
+
+// GET /api/data?sidx=...&sord=asc|desc
+export async function GET(req: NextRequest) {
+  const { searchParams } = req.nextUrl;
+  const sidxRaw = searchParams.get('sidx') || 'pday';
+  const sidx = SORT_WHITELIST.has(sidxRaw) ? sidxRaw : 'pday';
+  const sord = searchParams.get('sord') === 'asc' ? 'ASC' : 'DESC';
+  const col = `\`${sidx}\``;
+
+  const [rows] = await pool.query<RowDataPacket[]>(
+    `SELECT tab, pday, cnt, at, akt, until, warn, rem, \`order\`
+     FROM tabletten
+     ORDER BY ${col} ${sord}, rem DESC, tab ASC`
+  );
+
+  const values: Tablette[] = rows.map((r) => ({
+    tab:   r.tab,
+    pday:  r.pday,
+    cnt:   r.cnt,
+    at:    formatDate(r.at),
+    akt:   r.akt,
+    until: formatDate(r.until),
+    warn:  r.warn === 1 || r.warn === true,
+    rem:   r.rem,
+    order: r.order,
+  }));
+
+  const result: DataResponse = {
+    total: 1,
+    page: 1,
+    records: values.length,
+    values,
+  };
+
+  return NextResponse.json(result);
+}
+
+// POST /api/data
+// body: { oper: 'add'|'edit'|'del', tab, pday, cnt, at, rem, order }
+export async function POST(req: NextRequest) {
+  const data = await req.json();
+
+  if (data.oper === 'del') {
+    await pool.execute('DELETE FROM tabletten WHERE tab = ?', [data.tab]);
+    return NextResponse.json({ ok: true });
+  }
+
+  // add or edit
+  const pday  = parseFloat(data.pday)  || 1;
+  const cnt   = parseInt(data.cnt, 10) || 0;
+  const at    = data.at === '' ? '1900-01-01' : data.at;
+  const rem   = data.rem   || '';
+  const order = data.order || '';
+
+  const updates = checkAblauf({ cnt, pday, at: new Date(at) });
+
+  await pool.execute(
+    `INSERT INTO tabletten (tab, pday, cnt, at, akt, until, warn, rem, \`order\`)
+     VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+     ON DUPLICATE KEY UPDATE
+       pday     = VALUES(pday),
+       cnt      = VALUES(cnt),
+       at       = VALUES(at),
+       akt      = VALUES(akt),
+       until    = VALUES(until),
+       warn     = VALUES(warn),
+       rem      = VALUES(rem),
+       \`order\` = VALUES(\`order\`)`,
+    [
+      data.tab, pday, cnt, at,
+      updates.akt,
+      moment(updates.until).format('YYYY-MM-DD'),
+      updates.warn ? 1 : 0,
+      rem, order,
+    ]
+  );
+
+  return NextResponse.json({ ok: true });
+}