"use client"; // app/dashboard/page.jsx
import React, { useEffect, useState } from "react";
import "tailwindcss/tailwind.css";
import "@fontsource/roboto";
import "bootstrap-icons/font/bootstrap-icons.css";
import { loadWindowVariables } from "../../utils/loadWindowVariables";
import CPLStatus from "../../components/CPLStatus";
import Access1Status from "../../components/Access1Status";
import Access2Status from "../../components/Access2Status";

function Dashboard() {
  const apiUrl = process.env.NEXT_PUBLIC_API_BASE_URL;
  const [last20Messages, setLast20Messages] = useState([]);
  const [ip, setIp] = useState("");
  const [subnet, setSubnet] = useState("");
  const [gateway, setGateway] = useState("");
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);

  useEffect(() => {
    loadWindowVariables(apiUrl)
      .then(() => {
        if (window.last20Messages) {
          const parsedMessages = parseMessages(window.last20Messages);
          setLast20Messages(parsedMessages);
          setIp(window.ip);
          setSubnet(window.subnet);
          setGateway(window.gateway);
        } else {
          console.error("Konnte last20Messages nicht finden.");
          setError("Konnte last20Messages nicht finden.");
        }
        setLoading(false);
      })
      .catch((error) => {
        console.error("Fehler beim Laden des Skripts:", error);
        setError(error);
        setLoading(false);
      });
  }, [apiUrl]);

  const parseMessages = (messages) => {
    messages = messages
      .replace(/<tr>/g, "\n")
      .replace(/<\/?td>/g, "")
      .replace(/<\/tr>/g, "")
      .trim();

    const rows = messages.split("\n");
    return rows.map((row) => {
      const columns = [
        row.substring(0, 5), // ID
        row.substring(5, 10), // Wert (z.B. Modulnummer)
        row.substring(10, 29), // Zeitstempel, Millisekunden entfernt :000
        row.substring(33, row.length - 1), // Meldung (ohne letztes Zeichen)
        row.substring(row.length - 1), // Status (letztes Zeichen)
      ];
      return columns;
    });
  };

  return (
    <div className="bg-gray-100 flex flex-col min-h-screen p-8">
      {/* Letzte Meldungen */}
      <div className="flex justify-between items-center mb-4">
        <h1 className="text-xl font-bold text-gray-700">
          Letzten 20 Meldungen
        </h1>
        <button className="text-red-500 hover:text-red-600">
          <i className="bi bi-trash"></i>
        </button>
      </div>

      <div className="flex flex-col lg:flex-row gap-8">
        {/* Meldungen Liste */}
        <div className="bg-white shadow-md rounded-lg p-4 w-full lg:w-2/3">
          <table className="min-w-full border border-gray-200 text-left">
            <thead className="bg-gray-100 border-b border-gray-300">
              <tr>
                <th className="py-3 px-4 text-gray-700 text-sm font-medium">
                  ID
                </th>
                <th className="py-3 px-4 text-gray-700 text-sm font-medium">
                  Modul
                </th>
                <th className="py-3 px-4 text-gray-700 text-sm font-medium">
                  Zeitstempel
                </th>
                <th className="py-3 px-4 text-gray-700 text-sm font-medium w-2/3">
                  Meldung
                </th>
                <th className="py-3 px-4 text-gray-700 text-sm font-medium">
                  Status
                </th>
              </tr>
            </thead>
            <tbody className="text-sm text-gray-600">
              {last20Messages.length > 0 ? (
                last20Messages.map((columns, index) => (
                  <tr
                    key={index}
                    className="border-b border-gray-200 hover:bg-gray-50"
                  >
                    <td className="py-3 px-4">{columns[0]}</td>
                    <td className="py-3 px-4">{columns[1]}</td>
                    <td className="py-3 px-4">{columns[2]}</td>
                    <td className="py-3 px-4 w-2/3">{columns[3]}</td>
                    <td className="py-3 px-4">{columns[4]}</td>
                  </tr>
                ))
              ) : (
                <tr>
                  <td className="py-3 px-4 text-center" colSpan="5">
                    Keine Meldungen verfügbar.
                  </td>
                </tr>
              )}
            </tbody>
          </table>
        </div>

        {/* Sidebar mit Informationen */}
        <div className="bg-white shadow-md rounded-lg p-4 w-full lg:w-1/3 flex flex-col gap-4">
          {/* Versionsinformationen */}
          <div className="bg-gray-50 p-4 rounded-lg shadow-sm border border-gray-200">
            <h2 className="text-lg font-semibold text-gray-700 mb-2">
              Versionsinformationen
            </h2>
            <p className="text-sm text-gray-600">
              <span className="font-bold">Applikationsversion: </span> 5.1.1.8
              C-24-KA
            </p>
            <p className="text-sm text-gray-600">
              <span className="font-bold">Webserverversion: </span> 5.3.4.1
            </p>
          </div>

          {/* Beispiel für Geräteanzeige */}
          <div className="bg-gray-50 p-4 rounded-lg shadow-sm border border-gray-200">
            <div className="flex flex-row item-center justify-between">
              <CPLStatus />
              <Access1Status />
              <Access2Status />
            </div>
          </div>
        </div>
      </div>

      {/* Footer Informationen */}
      <div className="flex justify-between items-center mt-8 bg-white p-4 rounded-lg shadow-md border border-gray-200">
        <div className="flex items-center space-x-4">
          <img src="/images/IP-icon.svg" alt="IP Address" className="w-6 h-6" />
          <div>
            <p className="text-xs text-gray-500">IP-Adresse</p>
            <p className="text-sm font-medium text-gray-700">{ip}</p>
          </div>
        </div>
        <div className="flex items-center space-x-4">
          <img
            src="/images/subnet-mask.svg"
            alt="subnet mask"
            className="w-6 h-6"
          />
          <div>
            <p className="text-xs text-gray-500">Subnet-Maske</p>
            <p className="text-sm font-medium text-gray-700">{subnet}</p>
          </div>
        </div>
        <div className="flex items-center space-x-4">
          <img src="/images/gateway.svg" alt="gateway" className="w-6 h-6" />
          <div>
            <p className="text-xs text-gray-500">Gateway</p>
            <p className="text-sm font-medium text-gray-700">{gateway}</p>
          </div>
        </div>
      </div>
    </div>
  );
}

export default Dashboard;