feat: add authentication and admin features

- Added `jose` library for JWT token generation and verification.
- Implemented login functionality with token storage using cookies.
- Created `HeaderAdmin` component for admin panel with login/logout capabilities.
- Developed `LoginForm` component for user authentication.
- Added `Table` component to display data with caching from localStorage.
- Introduced `SubHeaderAdmin` for additional admin actions.
- Enhanced `database.js` with functions for admin login and fetching table data.
- Updated `server.js` to handle new routes for login and table data retrieval.
- Modified `package.json` and `package-lock.json` to include new dependencies.
This commit is contained in:
2025-08-12 22:56:58 +02:00
parent 97eaf1e484
commit 8c2049fa24
15 changed files with 744 additions and 14 deletions

View File

@@ -13,6 +13,7 @@
"dotenv": "^17.2.1",
"ejs": "^3.1.10",
"express": "^5.1.0",
"jose": "^6.0.12",
"mysql2": "^3.14.3"
}
},
@@ -563,6 +564,15 @@
"node": ">=10"
}
},
"node_modules/jose": {
"version": "6.0.12",
"resolved": "https://registry.npmjs.org/jose/-/jose-6.0.12.tgz",
"integrity": "sha512-T8xypXs8CpmiIi78k0E+Lk7T2zlK4zDyg+o1CZ4AkOHgDg98ogdP2BeZ61lTFKFyoEwJ9RgAgN+SdM3iPgNonQ==",
"license": "MIT",
"funding": {
"url": "https://github.com/sponsors/panva"
}
},
"node_modules/long": {
"version": "5.3.2",
"resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",

View File

@@ -15,6 +15,7 @@
"dotenv": "^17.2.1",
"ejs": "^3.1.10",
"express": "^5.1.0",
"jose": "^6.0.12",
"mysql2": "^3.14.3"
}
}

View File

@@ -1,7 +1,8 @@
import express from "express";
import cors from "cors";
import env from "dotenv";
import { query } from "./services/database.js";
import { query, loginAdmin, getTableData } from "./services/database.js";
import { generateToken, authenticate } from "./services/tokenService.js";
env.config();
const app = express();
const port = 8002;
@@ -24,6 +25,26 @@ app.post("/lose", async (req, res) => {
}
});
app.get("/table-data", authenticate, async (req, res) => {
const result = await getTableData();
if (result.success) {
res.status(200).json(result.data);
} else {
res.status(500);
}
});
app.post("/login", async (req, res) => {
const { username, password } = req.body;
const result = await loginAdmin(username, password);
if (result.success) {
const token = await generateToken({ username });
res.status(200).json({ success: true, token });
} else {
res.status(401).json({ success: false });
}
});
app.listen(port, () => {
console.log(`Server is running on port: ${port}`);
});

View File

@@ -2,7 +2,7 @@ import mysql from "mysql2";
import dotenv from "dotenv";
dotenv.config();
// Create a MySQL connection pool using environment variables for configuration
// Ein einzelner Pool reicht; der zweite Pool benutzte fälschlich DB_TABLE als Datenbank
const pool = mysql
.createPool({
host: process.env.DB_HOST,
@@ -32,3 +32,21 @@ export async function query(params) {
return { success: false };
}
}
export async function loginAdmin(username, password) {
const [rows] = await pool.query(
"SELECT * FROM admin_user WHERE username = ? AND password = ?",
[username, password]
);
if (rows.length > 0) return { success: true };
return { success: false };
}
export async function getTableData() {
const [result] = await pool.query("SELECT * FROM lose");
if (result.length > 0) {
return { success: true, data: result };
}
return { success: false };
}

View File

@@ -0,0 +1,26 @@
import { SignJWT, jwtVerify } from "jose";
import env from "dotenv";
env.config();
const secret = new TextEncoder().encode(process.env.SECRET_KEY);
export async function generateToken(payload) {
const newToken = await new SignJWT(payload)
.setProtectedHeader({ alg: "HS256" })
.setIssuedAt()
.setExpirationTime("2h") // Token valid for 2 hours
.sign(secret);
console.log("Generated token: ", newToken);
return newToken;
}
export async function authenticate(req, res, next) {
const authHeader = req.headers["authorization"];
const token = authHeader && authHeader.split(" ")[1]; // Bearer <token>
if (token == null) return res.sendStatus(401); // No token present
const { payload } = await jwtVerify(token, secret);
req.user = payload;
next();
}

View File

@@ -9,7 +9,10 @@
"version": "0.0.0",
"dependencies": {
"@tailwindcss/vite": "^4.1.11",
"js-cookie": "^3.0.5",
"lucide-react": "^0.539.0",
"primeicons": "^7.0.0",
"primereact": "^10.9.6",
"react": "^19.1.1",
"react-dom": "^19.1.1",
"react-router-dom": "^7.8.0",
@@ -22,6 +25,7 @@
},
"devDependencies": {
"@eslint/js": "^9.32.0",
"@types/js-cookie": "^3.0.6",
"@types/react": "^19.1.9",
"@types/react-dom": "^19.1.7",
"@vitejs/plugin-react": "^4.7.0",
@@ -268,6 +272,15 @@
"@babel/core": "^7.0.0-0"
}
},
"node_modules/@babel/runtime": {
"version": "7.28.2",
"resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.28.2.tgz",
"integrity": "sha512-KHp2IflsnGywDjBWDkR9iEqiWSpc8GIi0lgTT3mOElT0PP1tG26P4tmFI2YvAdzgq9RGyoHZQEIEdZy6Ec5xCA==",
"license": "MIT",
"engines": {
"node": ">=6.9.0"
}
},
"node_modules/@babel/template": {
"version": "7.27.2",
"resolved": "https://registry.npmjs.org/@babel/template/-/template-7.27.2.tgz",
@@ -1861,6 +1874,13 @@
"integrity": "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w==",
"license": "MIT"
},
"node_modules/@types/js-cookie": {
"version": "3.0.6",
"resolved": "https://registry.npmjs.org/@types/js-cookie/-/js-cookie-3.0.6.tgz",
"integrity": "sha512-wkw9yd1kEXOPnvEeEV1Go1MmxtBJL0RR79aOTAApecWFVu7w0NNXNqhcWgvw2YgZDYadliXkl14pa3WXw5jlCQ==",
"dev": true,
"license": "MIT"
},
"node_modules/@types/json-schema": {
"version": "7.0.15",
"resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -1872,7 +1892,6 @@
"version": "19.1.9",
"resolved": "https://registry.npmjs.org/@types/react/-/react-19.1.9.tgz",
"integrity": "sha512-WmdoynAX8Stew/36uTSVMcLJJ1KRh6L3IZRx1PZ7qJtBqT3dYTgyDTx8H1qoRghErydW7xw9mSJ3wS//tCRpFA==",
"dev": true,
"license": "MIT",
"dependencies": {
"csstype": "^3.0.2"
@@ -1888,6 +1907,15 @@
"@types/react": "^19.0.0"
}
},
"node_modules/@types/react-transition-group": {
"version": "4.4.12",
"resolved": "https://registry.npmjs.org/@types/react-transition-group/-/react-transition-group-4.4.12.tgz",
"integrity": "sha512-8TV6R3h2j7a91c+1DXdJi3Syo69zzIZbz7Lg5tORM5LEJG7X/E6a1V3drRyBRZq7/utz7A+c4OgYLiLcYGHG6w==",
"license": "MIT",
"peerDependencies": {
"@types/react": "*"
}
},
"node_modules/@typescript-eslint/eslint-plugin": {
"version": "8.39.0",
"resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.39.0.tgz",
@@ -2468,7 +2496,6 @@
"version": "3.1.3",
"resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
"integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
"dev": true,
"license": "MIT"
},
"node_modules/debug": {
@@ -2504,6 +2531,16 @@
"node": ">=8"
}
},
"node_modules/dom-helpers": {
"version": "5.2.1",
"resolved": "https://registry.npmjs.org/dom-helpers/-/dom-helpers-5.2.1.tgz",
"integrity": "sha512-nRCa7CK3VTrM2NmGkIy4cbK7IZlgBE/PYMn55rrXefr5xXDP0LdtfPnblFDoVdcAfslJ7or6iqAUnx0CCGIWQA==",
"license": "MIT",
"dependencies": {
"@babel/runtime": "^7.8.7",
"csstype": "^3.0.2"
}
},
"node_modules/dot-case": {
"version": "3.0.4",
"resolved": "https://registry.npmjs.org/dot-case/-/dot-case-3.0.4.tgz",
@@ -3089,6 +3126,15 @@
"jiti": "lib/jiti-cli.mjs"
}
},
"node_modules/js-cookie": {
"version": "3.0.5",
"resolved": "https://registry.npmjs.org/js-cookie/-/js-cookie-3.0.5.tgz",
"integrity": "sha512-cEiJEAEoIbWfCZYKWhVwFuvPX1gETRYPw6LlaTKoxD3s2AkXzkCjnp6h0V77ozyqj0jakteJ4YqDJT830+lVGw==",
"license": "MIT",
"engines": {
"node": ">=14"
}
},
"node_modules/js-tokens": {
"version": "4.0.0",
"resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -3439,6 +3485,18 @@
"dev": true,
"license": "MIT"
},
"node_modules/loose-envify": {
"version": "1.4.0",
"resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
"integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
"license": "MIT",
"dependencies": {
"js-tokens": "^3.0.0 || ^4.0.0"
},
"bin": {
"loose-envify": "cli.js"
}
},
"node_modules/lower-case": {
"version": "2.0.2",
"resolved": "https://registry.npmjs.org/lower-case/-/lower-case-2.0.2.tgz",
@@ -3595,6 +3653,15 @@
"integrity": "sha512-xxOWJsBKtzAq7DY0J+DTzuz58K8e7sJbdgwkbMWQe8UYB6ekmsQ45q0M/tJDsGaZmbC+l7n57UV8Hl5tHxO9uw==",
"license": "MIT"
},
"node_modules/object-assign": {
"version": "4.1.1",
"resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
"integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
"license": "MIT",
"engines": {
"node": ">=0.10.0"
}
},
"node_modules/optionator": {
"version": "0.9.4",
"resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
@@ -3761,6 +3828,46 @@
"node": ">= 0.8.0"
}
},
"node_modules/primeicons": {
"version": "7.0.0",
"resolved": "https://registry.npmjs.org/primeicons/-/primeicons-7.0.0.tgz",
"integrity": "sha512-jK3Et9UzwzTsd6tzl2RmwrVY/b8raJ3QZLzoDACj+oTJ0oX7L9Hy+XnVwgo4QVKlKpnP/Ur13SXV/pVh4LzaDw==",
"license": "MIT"
},
"node_modules/primereact": {
"version": "10.9.6",
"resolved": "https://registry.npmjs.org/primereact/-/primereact-10.9.6.tgz",
"integrity": "sha512-0Jjz/KzfUURSHaPTXJwjL2Dc7CDPnbO17MivyJz7T5smGAMLY5d+IqpQhV61R22G/rDmhMh3+32LCNva2M8fRw==",
"license": "MIT",
"dependencies": {
"@types/react-transition-group": "^4.4.1",
"react-transition-group": "^4.4.1"
},
"engines": {
"node": ">=14.0.0"
},
"peerDependencies": {
"@types/react": "^17.0.0 || ^18.0.0 || ^19.0.0",
"react": "^17.0.0 || ^18.0.0 || ^19.0.0",
"react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0"
},
"peerDependenciesMeta": {
"@types/react": {
"optional": true
}
}
},
"node_modules/prop-types": {
"version": "15.8.1",
"resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
"integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
"license": "MIT",
"dependencies": {
"loose-envify": "^1.4.0",
"object-assign": "^4.1.1",
"react-is": "^16.13.1"
}
},
"node_modules/punycode": {
"version": "2.3.1",
"resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
@@ -3813,6 +3920,12 @@
"react": "^19.1.1"
}
},
"node_modules/react-is": {
"version": "16.13.1",
"resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
"integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
"license": "MIT"
},
"node_modules/react-refresh": {
"version": "0.17.0",
"resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",
@@ -3874,6 +3987,22 @@
"react-dom": "^18 || ^19"
}
},
"node_modules/react-transition-group": {
"version": "4.4.5",
"resolved": "https://registry.npmjs.org/react-transition-group/-/react-transition-group-4.4.5.tgz",
"integrity": "sha512-pZcd1MCJoiKiBR2NRxeCRg13uCXbydPnmB4EOeRrY7480qNWO8IIgQG6zlDkm6uRMsURXPuKq0GWtiM59a5Q6g==",
"license": "BSD-3-Clause",
"dependencies": {
"@babel/runtime": "^7.5.5",
"dom-helpers": "^5.0.1",
"loose-envify": "^1.4.0",
"prop-types": "^15.6.2"
},
"peerDependencies": {
"react": ">=16.6.0",
"react-dom": ">=16.6.0"
}
},
"node_modules/resolve-from": {
"version": "4.0.0",
"resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",

View File

@@ -11,7 +11,10 @@
},
"dependencies": {
"@tailwindcss/vite": "^4.1.11",
"js-cookie": "^3.0.5",
"lucide-react": "^0.539.0",
"primeicons": "^7.0.0",
"primereact": "^10.9.6",
"react": "^19.1.1",
"react-dom": "^19.1.1",
"react-router-dom": "^7.8.0",
@@ -24,6 +27,7 @@
},
"devDependencies": {
"@eslint/js": "^9.32.0",
"@types/js-cookie": "^3.0.6",
"@types/react": "^19.1.9",
"@types/react-dom": "^19.1.7",
"@vitejs/plugin-react": "^4.7.0",

View File

@@ -1,13 +1,27 @@
import "../App.css";
import Layout from "../layout/Layout";
import React from "react";
import React, { useState } from "react";
import HeaderAdmin from "./HeaderAdmin";
import Table from "./Table";
import Cookies from "js-cookie";
const Admin: React.FC = () => {
// Keep token in state so UI updates immediately after login without reload
const [token, setToken] = useState<string | null>(
() => Cookies.get("token") ?? null
);
return (
<>
<Layout title="MCS Lose - Admin Panel">
<h1>Admin</h1>
</Layout>
<HeaderAdmin
token={token}
onLoginSuccess={(t) => setToken(t)}
onLogout={() => setToken(null)}
/>
{token ? (
<Table />
) : (
<div className="p-4">Please log in as an admin.</div>
)}
</>
);
};

View File

@@ -0,0 +1,79 @@
import React from "react";
import { Ticket, RectangleEllipsis } from "lucide-react";
import { useState } from "react";
import LoginForm from "./LoginForm";
import { ToastContainer } from "react-toastify";
import { logoutAdmin } from "../utils/userHandler";
interface HeaderAdminProps {
token?: string | null;
onLoginSuccess?: (token: string) => void;
onLogout?: () => void;
}
const HeaderAdmin: React.FC<HeaderAdminProps> = ({
token,
onLoginSuccess,
onLogout,
}) => {
const [isOpen, setIsOpen] = useState(false);
return (
<header className="w-full border-b border-black/10 bg-gray-100/95 shadow-sm">
<div className="mx-auto flex max-w-7xl items-center justify-between px-4 py-3 md:px-6">
<div className="flex items-center gap-3">
<Ticket className="h-8 w-8 text-black" strokeWidth={2.6} />
<h1 className="text-2xl font-black tracking-tight text-neutral-900 md:text-3xl">
Admin Panel
</h1>
</div>
{!token && (
<button
onClick={() => setIsOpen(true)}
type="button"
className="inline-flex items-center gap-2 rounded-xl border border-black/10 bg-gray-200/90 px-4 py-2 font-semibold text-neutral-900 shadow-inner transition hover:bg-gray-300/90"
>
<RectangleEllipsis className="h-5 w-5" />
Login
</button>
)}
{token && (
<button
onClick={() => {
logoutAdmin();
onLogout?.();
}}
type="button"
className="inline-flex items-center gap-2 rounded-xl border border-black/10 bg-gray-200/90 px-4 py-2 font-semibold text-neutral-900 shadow-inner transition hover:bg-gray-300/90"
>
<RectangleEllipsis className="h-5 w-5" />
Logout
</button>
)}
</div>
{isOpen && (
<LoginForm
onClose={() => setIsOpen(false)}
onLoginSuccess={(token) => {
onLoginSuccess?.(token);
}}
/>
)}
<ToastContainer
position="top-right"
autoClose={5000}
hideProgressBar={false}
newestOnTop
closeOnClick
rtl={false}
pauseOnFocusLoss={false}
draggable
pauseOnHover
theme="light"
/>
</header>
);
};
export default HeaderAdmin;

View File

@@ -5,11 +5,9 @@ import React from "react";
const Home: React.FC = () => {
return (
<>
<Layout title="MCS Lose - Registrieren">
<MainForm />
</Layout>
</>
<Layout title="MCS Lose - Registrieren">
<MainForm />
</Layout>
);
};

View File

@@ -0,0 +1,89 @@
import React, { useState } from "react";
import { toast } from "react-toastify";
import { handleSubmit } from "../utils/handleSubmit";
type LoginFormProps = {
onClose: () => void;
onLoginSuccess?: (token: string) => void;
};
const LoginForm: React.FC<LoginFormProps> = ({ onClose, onLoginSuccess }) => {
const [loading, setLoading] = useState(false);
const onSubmit = (e: React.FormEvent<HTMLFormElement>) => {
setLoading(true);
toast
.promise(handleSubmit(e), {
pending: "Logging in...",
})
.then((res) => {
if (res?.token) {
onLoginSuccess?.(res.token);
}
onClose();
})
.finally(() => setLoading(false));
};
return (
<div className="fixed inset-0 z-50 flex items-start justify-center pt-24">
<div className="absolute inset-0 bg-black/40 backdrop-blur-sm" />
<button onClick={onClose}>X</button>
<form
onSubmit={onSubmit}
className="relative z-10 w-11/12 max-w-sm rounded-2xl border border-black/10 bg-zinc-100 p-6 shadow-xl"
>
<h3 className="mb-4 text-xl font-extrabold text-zinc-900">Login</h3>
<div className="space-y-3">
<label
className="block text-sm font-medium text-zinc-800"
htmlFor="username"
>
Username
</label>
<input
id="username"
name="username"
type="text"
placeholder="yourname"
className="w-full rounded-xl border border-black/25 bg-white/80 px-4 py-2.5 text-sm text-zinc-800 placeholder-zinc-400 shadow-inner outline-none focus:border-black/40 focus:ring-2 focus:ring-black/10"
required
/>
<label
className="mt-3 block text-sm font-medium text-zinc-800"
htmlFor="password"
>
Password
</label>
<input
id="password"
name="password"
type="password"
placeholder="••••••••"
className="w-full rounded-xl border border-black/25 bg-white/80 px-4 py-2.5 text-sm text-zinc-800 placeholder-zinc-400 shadow-inner outline-none focus:border-black/40 focus:ring-2 focus:ring-black/10"
required
/>
</div>
<button
type="submit"
disabled={loading}
className="mt-5 w-full rounded-xl bg-blue-600 px-4 py-3 text-sm font-bold text-white shadow transition hover:bg-blue-700 disabled:opacity-60 disabled:cursor-not-allowed active:bg-blue-800"
>
{loading ? "Logging in..." : "Login"}
</button>
<button
type="button"
onClick={onClose}
className="mt-3 w-full rounded-xl bg-zinc-300 px-4 py-3 text-sm font-bold text-zinc-800 shadow transition hover:bg-zinc-400 active:bg-zinc-500"
>
Cancel
</button>
</form>
</div>
);
};
export default LoginForm;

View File

@@ -0,0 +1,48 @@
import React from "react";
import { Sheet, WholeWord } from "lucide-react";
// Sub navigation bar for admin views: provides import + clear selection actions
const SubHeaderAdmin: React.FC = () => {
return (
<header className="sticky top-0 z-30 w-full border-b border-gray-200/70 bg-white/90 backdrop-blur supports-[backdrop-filter]:bg-white/60">
<div className="mx-auto flex max-w-7xl items-center justify-between gap-4 px-4 py-2.5 md:px-6">
<div className="flex items-center gap-3">
<h2 className="text-base font-semibold tracking-tight text-gray-800 sm:text-lg">
Verwaltung
</h2>
<span
className="hidden h-5 w-px bg-gray-300 sm:inline-block"
aria-hidden="true"
/>
<p className="hidden text-sm text-gray-500 md:block">
Aktionen für Daten in der Datenbank
</p>
</div>
<div className="flex items-center gap-2">
<button
type="button"
className="group inline-flex items-center gap-2 rounded-md border border-gray-300 bg-white px-3.5 py-2 text-sm font-medium text-gray-700 shadow-sm transition hover:bg-gray-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-500/60 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
>
<Sheet
className="h-4 w-4 shrink-0 text-gray-500 transition group-hover:text-gray-600"
strokeWidth={1.75}
/>
<span className="whitespace-nowrap">Losnummern importieren</span>
</button>
<button
type="button"
className="group inline-flex items-center gap-2 rounded-md bg-rose-600 px-3.5 py-2 text-sm font-medium text-white shadow-sm transition hover:bg-rose-500 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-rose-500/60 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-60"
>
<WholeWord
className="h-4 w-4 shrink-0 text-white/90 transition group-hover:text-white"
strokeWidth={1.75}
/>
<span className="whitespace-nowrap">Auswahl löschen</span>
</button>
</div>
</div>
</header>
);
};
export default SubHeaderAdmin;

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import React, { useEffect, useState } from "react";
import Cookies from "js-cookie";
import { getTableData, readCachedTableData } from "../utils/userHandler";
import { EllipsisVertical } from "lucide-react";
import SubHeaderAdmin from "./SubHeaderAdmin";
interface DataPackage {
losnummer: string;
vorname: string | null;
nachname: string | null;
adresse: string | null;
plz: string | null;
email: string | null;
[key: string]: any;
}
const Table: React.FC = () => {
const [rows, setRows] = useState<DataPackage[]>([]);
const [loading, setLoading] = useState<boolean>(false);
const [error, setError] = useState<string | null>(null);
// Hilfsfunktion zum Einlesen & Normalisieren der LocalStorage-Daten
const loadFromCache = () => {
const cached = readCachedTableData<any>();
if (!cached) {
setRows([]);
return;
}
// Server könnte entweder ein Objekt oder ein Array liefern
const normalized: DataPackage[] = Array.isArray(cached)
? cached
: [cached];
setRows(normalized);
};
useEffect(() => {
// Initial lokale Daten laden (falls schon vorhanden)
loadFromCache();
// Frische Daten vom Backend holen
const token = Cookies.get("token") || "";
if (!token) return; // Kein Token => nur Cache anzeigen
setLoading(true);
getTableData(token)
.then((data) => {
if (data === null) {
setError("Fehler beim Laden der Daten.");
} else {
setError(null);
}
loadFromCache();
})
.finally(() => setLoading(false));
}, []);
// Reagieren auf LocalStorage-Änderungen (z.B. in anderen Tabs)
useEffect(() => {
const handler = (e: StorageEvent) => {
if (e.key === "tableData") {
loadFromCache();
}
};
window.addEventListener("storage", handler);
return () => window.removeEventListener("storage", handler);
}, []);
const formatValue = (v: any) =>
v === null || v === undefined || v === "" ? "-" : String(v);
return (
<>
<SubHeaderAdmin />
<div className="w-full">
<div className="mb-4 flex items-center gap-3">
{loading && (
<span className="text-xs text-blue-600 animate-pulse">
Laden...
</span>
)}
{error && <span className="text-xs text-red-600">{error}</span>}
</div>
<div className="overflow-x-auto rounded-lg shadow ring-1 ring-black/5">
<table className="min-w-full divide-y divide-gray-200 text-sm">
<thead className="bg-gray-50">
<tr>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
<input type="checkbox" name="" id="" />
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
Losnummer
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
Vorname
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
Nachname
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
Adresse
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
PLZ
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
>
Email
</th>
<th
scope="col"
className="px-4 py-2 text-left font-medium uppercase tracking-wide text-gray-600"
></th>
</tr>
</thead>
<tbody className="divide-y divide-gray-100 bg-white">
{rows.length === 0 && !loading && (
<tr>
<td
colSpan={6}
className="px-4 py-6 text-center text-gray-500"
>
Keine Daten vorhanden.
</td>
</tr>
)}
{rows.map((row, idx) => (
<tr
key={row.losnummer ?? idx}
className="hover:bg-gray-50 transition-colors"
>
<td className="px-4 py-2 font-mono text-xs text-gray-900">
<input type="checkbox" name="" id={row.losnummer} />
</td>
<td className="px-4 py-2 font-mono text-xs text-gray-900">
{formatValue(row.losnummer)}
</td>
<td className="px-4 py-2">
<input type="text" value={formatValue(row.vorname)} />
</td>
<td className="px-4 py-2">
<input type="text" value={formatValue(row.nachname)} />
</td>
<td
className="px-4 py-2 max-w-[16rem] truncate"
title={formatValue(row.adresse)}
>
<input type="text" value={formatValue(row.adresse)} />
</td>
<td className="px-4 py-2">
<input type="text" value={formatValue(row.plz)} />
</td>
<td className="px-4 py-2">
<input type="text" value={formatValue(row.email)} />
</td>
<td className="px-4 py-2">
<button>
<EllipsisVertical />
</button>
</td>
</tr>
))}
</tbody>
</table>
</div>
</div>
</>
);
};
export default Table;

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import Cookies from "js-cookie";
import type React from "react";
import { myToast } from "./toastify";
interface LoginResponse {
success: boolean;
token?: string;
message?: string;
}
// Performs login; resolves with data on success, throws Error on failure.
export const handleSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
e.preventDefault();
const form = e.currentTarget;
const username = (form.elements.namedItem("username") as HTMLInputElement)
?.value;
const password = (form.elements.namedItem("password") as HTMLInputElement)
?.value;
let response: Response;
try {
response = await fetch("http://localhost:8002/login", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ username, password }),
});
} catch (networkErr) {
myToast("Network error. Please try again.", "error");
return;
}
let data: LoginResponse;
try {
data = await response.json();
} catch {
myToast("Invalid server response!", "error");
return;
}
if (!response.ok || !data.success || !data.token) {
myToast("Login failed!", "error");
return;
}
Cookies.set("token", data.token, { sameSite: "strict" });
myToast("Login successful", "success");
return data;
};

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import Cookies from "js-cookie";
import { myToast } from "./toastify";
export const logoutAdmin = () => {
Cookies.remove("token");
localStorage.removeItem("tableData");
myToast("Logged out successfully!", "success");
};
// Fetch table data and store it in localStorage. Returns the parsed data or null on failure.
export const getTableData = async (token: string) => {
try {
const response = await fetch("http://localhost:8002/table-data", {
method: "GET",
headers: {
Authorization: `Bearer ${token}`,
},
});
if (response.status === 401) {
myToast("Session expired. Please log in again.", "error");
logoutAdmin();
return null;
}
if (!response.ok) {
const text = await response.text().catch(() => "");
myToast(`Error fetching table data! ${text}`, "error");
return null;
}
// Ensure we parse JSON
const data = await response.json();
localStorage.setItem("tableData", JSON.stringify(data));
myToast("Table data fetched successfully!", "success");
return data;
} catch (error: any) {
myToast(`Error fetching table data! ${error?.message || error}`, "error");
return null;
}
};
// Helper to read cached table data safely
export const readCachedTableData = <T = unknown>(): T | null => {
const raw = localStorage.getItem("tableData");
if (!raw) return null;
try {
return JSON.parse(raw) as T;
} catch {
// Corrupted cache -> clear it
localStorage.removeItem("tableData");
return null;
}
};