feat: API-/UI-Anpassung für MSS1-Parameter zur Entwicklung wie Produktion

- MSS1-Parameter-Parsing in /api/cpl/messages.ts ergänzt
- Filterung nach Datum mit MSS1 exakt wie in der Produktionsumgebung
- meldungen.tsx so angepasst, dass Datumsauswahl in der Entwicklungsumgebung funktioniert
- Standarddatum auf 2025-02-28 gesetzt (Mockdaten verfügbar)
- Konsolenausgaben zum Debuggen ergänzt

pages/api/cpl/messages.ts

@@ -0,0 +1,57 @@
+// /pages/api/cpl/messages.ts
+import { NextApiRequest, NextApiResponse } from "next";
+import path from "path";
+import { promises as fs } from "fs";
+
+function parseDate(str: string): Date {
+  return new Date(str.replace(" ", "T"));
+}
+
+export default async function handler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
+  const { from, to, MSS1 } = req.query;
+
+  const filePath = path.join(
+    process.cwd(),
+    "apiMockData/meldungen/messages.json"
+  );
+  const fileContents = await fs.readFile(filePath, "utf-8");
+  const data = JSON.parse(fileContents);
+
+  let fromDate: Date | null = null;
+  let toDate: Date | null = null;
+
+  if (from && to) {
+    fromDate = new Date(from.toString());
+    toDate = new Date(to.toString());
+    toDate.setHours(23, 59, 59, 999);
+  } else if (MSS1) {
+    const parts = MSS1.toString().split(";");
+    if (parts.length >= 6) {
+      const [fy, fm, fd, ty, tm, td] = parts;
+      fromDate = new Date(`${fy}-${fm}-${fd}`);
+      toDate = new Date(`${ty}-${tm}-${td}`);
+      toDate.setHours(23, 59, 59, 999);
+    }
+  }
+
+  if (fromDate && toDate) {
+    const filtered = data.filter((msg: any) => {
+      const messageDate = parseDate(msg.t);
+      return messageDate >= fromDate! && messageDate <= toDate!;
+    });
+
+    console.log(
+      "⏱ Zeitraum:",
+      fromDate.toISOString(),
+      "→",
+      toDate.toISOString()
+    );
+    console.log("📦 Gefunden:", filtered.length);
+    return res.status(200).json(filtered.slice(0, 500));
+  }
+
+  res.status(200).json(data.slice(0, 500));
+}

pages/meldungen.tsx

@@ -1,6 +1,5 @@
-// /pages/meldungen.tsx
 "use client";
-
+// /pages/meldungen.tsx
 import React, { useEffect, useState } from "react";
 
 type Meldung = {
@@ -16,12 +15,10 @@ const ITEMS_PER_PAGE = 10;
 export default function Messages() {
   const [messages, setMessages] = useState<Meldung[]>([]);
   const [currentPage, setCurrentPage] = useState(1);
-  const [fromDate, setFromDate] = useState<string>(
-    () => new Date().toISOString().split("T")[0]
-  );
-  const [toDate, setToDate] = useState<string>(
-    () => new Date().toISOString().split("T")[0]
-  );
+
+  // Standarddatum zurücksetzen auf 2025-02-28 (letzter Tag mit Daten!)
+  const [fromDate, setFromDate] = useState<string>("2025-02-28");
+  const [toDate, setToDate] = useState<string>("2025-02-28");
 
   const fetchMessages = async () => {
     const from = new Date(fromDate);
@@ -38,12 +35,21 @@ export default function Messages() {
       typeof window !== "undefined" && window.location.hostname === "localhost";
 
     const url = isDev
-      ? "/CPLmockData/meldungen/messages.json"
+      ? `/api/cpl/messages?MSS1=${fy};${fm};${fd};${ty};${tm};${td};All`
       : `/CPL?Service/ae.ACP&MSS1=${fy};${fm};${fd};${ty};${tm};${td};All`;
 
     try {
       const res = await fetch(url);
-      const data = await res.json();
+      const raw = await res.json();
+      console.log("URL:", url);
+      console.log("Daten vom Server:", raw);
+
+      const data = Array.isArray(raw) ? raw : raw.data;
+      if (!Array.isArray(data)) {
+        console.error("Die empfangenen Daten sind kein Array:", data);
+        return;
+      }
+
       setMessages(data);
       setCurrentPage(1);
     } catch (err) {
@@ -55,6 +61,10 @@ export default function Messages() {
     fetchMessages();
   }, []);
 
+  useEffect(() => {
+    fetchMessages();
+  }, [fromDate, toDate]);
+
   const totalPages = Math.ceil(messages.length / ITEMS_PER_PAGE);
   const currentMessages = messages.slice(
     (currentPage - 1) * ITEMS_PER_PAGE,