implement admin panel with login functionality and dashboard layout

admin/src/App.tsx

@@ -1,9 +1,12 @@
 import "./App.css";
+import Layout from "./Layout/Layout";
 
 function App() {
   return (
     <>
-      <p>Admin panel</p>
+      <Layout>
+        <p></p>
+      </Layout>
     </>
   );
 }

admin/src/Layout/Dashboard.tsx

@@ -0,0 +1,60 @@
+import React from "react";
+import { useState } from "react";
+import { Box, Heading, Text, Flex, Button } from "@chakra-ui/react";
+import Sidebar from "./Sidebar";
+import UserTable from "../components/UserTable";
+import ItemTable from "../components/ItemTable";
+import LockerTable from "../components/LockerTable";
+import LoanTable from "../components/LoanTable";
+
+type DashboardProps = {
+  onLogout?: () => void;
+};
+
+const Dashboard: React.FC<DashboardProps> = ({ onLogout }) => {
+  const userName = localStorage.getItem("userName") || "Admin";
+
+  const [activeView, setActiveView] = useState("");
+
+  return (
+    <Flex h="100vh">
+      <Sidebar
+        viewAusleihen={() => setActiveView("Ausleihen")}
+        viewGegenstaende={() => setActiveView("Gegenstände")}
+        viewSchliessfaecher={() => setActiveView("Schließfächer")}
+        viewUser={() => setActiveView("User")}
+      />
+      <Box flex="1" display="flex" flexDirection="column">
+        <Flex
+          as="header"
+          align="center"
+          justify="space-between"
+          px={6}
+          py={4}
+          borderBottom="1px"
+          borderColor="gray.200"
+          bg="gray.900"
+        >
+          <Heading size="md">Dashboard</Heading>
+          <Flex align="center" gap={6}>
+            <Text fontSize="sm" color="white">
+              Willkommen {userName}, im Admin-Dashboard!
+            </Text>
+            <Button variant="solid" onClick={onLogout}>
+              Logout
+            </Button>
+          </Flex>
+        </Flex>
+        <Box as="main" flex="1" p={6}>
+          {activeView === "" && <Text>Bitte wählen Sie eine Ansicht aus.</Text>}
+          {activeView === "User" && <UserTable />}
+          {activeView === "Ausleihen" && <LoanTable />}
+          {activeView === "Gegenstände" && <ItemTable />}
+          {activeView === "Schließfächer" && <LockerTable />}
+        </Box>
+      </Box>
+    </Flex>
+  );
+};
+
+export default Dashboard;

admin/src/Layout/Layout.tsx

@@ -0,0 +1,39 @@
+import React, { useState } from "react";
+import { useEffect } from "react";
+import Dashboard from "./Dashboard";
+import Login from "./Login";
+import Cookies from "js-cookie";
+
+type LayoutProps = {
+  children: React.ReactNode;
+};
+
+const Layout: React.FC<LayoutProps> = ({ children }) => {
+  const [isLoggedIn, setIsLoggedIn] = useState(false);
+
+  useEffect(() => {
+    if (Cookies.get("token")) {
+      setIsLoggedIn(true);
+    }
+  }, []);
+
+  const handleLogout = () => {
+    Cookies.remove("token");
+    setIsLoggedIn(false);
+  };
+
+  return (
+    <>
+      <main>
+        {isLoggedIn ? (
+          <Dashboard onLogout={() => handleLogout()} />
+        ) : (
+          <Login onSuccess={() => setIsLoggedIn(true)} />
+        )}
+      </main>
+      {children}
+    </>
+  );
+};
+
+export default Layout;

admin/src/Layout/Login.tsx

@@ -0,0 +1,62 @@
+import React from "react";
+import { useState } from "react";
+import { loginFunc } from "@/utils/loginUser";
+import MyAlert from "@/components/myChakra/MyAlert";
+import { Button, Card, Field, Input, Stack } from "@chakra-ui/react";
+
+const Login: React.FC<{ onSuccess: () => void }> = ({ onSuccess }) => {
+  const [username, setUsername] = useState("");
+  const [password, setPassword] = useState("");
+  const [isError, setIsError] = useState(false);
+  const [errorMsg, setErrorMsg] = useState("");
+  const [errorDsc, setErrorDsc] = useState("");
+
+  const handleLogin = async () => {
+    const result = await loginFunc(username, password);
+    if (!result.success) {
+      setErrorMsg(result.message);
+      setErrorDsc(result.description);
+      setIsError(true);
+      return;
+    }
+    onSuccess();
+  };
+
+  return (
+    <Card.Root maxW="sm">
+      <Card.Header>
+        <Card.Title>Login</Card.Title>
+        <Card.Description>
+          Bitte unten Ihre Admin Zugangsdaten eingeben.
+        </Card.Description>
+      </Card.Header>
+      <Card.Body>
+        <Stack gap="4" w="full">
+          <Field.Root>
+            <Field.Label>username</Field.Label>
+            <Input
+              value={username}
+              onChange={(e) => setUsername(e.target.value)}
+            />
+          </Field.Root>
+          <Field.Root>
+            <Field.Label>password</Field.Label>
+            <Input
+              type="password"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+            />
+          </Field.Root>
+        </Stack>
+      </Card.Body>
+      <Card.Footer justifyContent="flex-end">
+        {isError && <MyAlert title={errorMsg} description={errorDsc} />}
+        <Button onClick={() => handleLogin()} variant="solid">
+          Login
+        </Button>
+      </Card.Footer>
+    </Card.Root>
+  );
+};
+
+export default Login;

admin/src/Layout/Sidebar.tsx

@@ -0,0 +1,81 @@
+import React from "react";
+import { Box, Flex, VStack, Heading, Text, Link } from "@chakra-ui/react";
+
+type SidebarProps = {
+  viewAusleihen: () => void;
+  viewGegenstaende: () => void;
+  viewSchliessfaecher: () => void;
+  viewUser: () => void;
+};
+
+const Sidebar: React.FC<SidebarProps> = ({
+  viewAusleihen,
+  viewGegenstaende,
+  viewSchliessfaecher,
+  viewUser,
+}) => {
+  return (
+    <Box
+      as="aside"
+      w="260px"
+      minH="100vh"
+      bg="gray.800"
+      color="gray.100"
+      px={6}
+      py={8}
+      borderRight="1px solid"
+      borderColor="gray.700"
+    >
+      <Flex direction="column" h="full">
+        <Heading size="md" mb={8} letterSpacing="wide">
+          Borrow System
+        </Heading>
+
+        <VStack align="stretch" gap={4} fontSize="sm">
+          <Link
+            px={3}
+            py={2}
+            rounded="md"
+            _hover={{ bg: "gray.700", textDecoration: "none" }}
+            onClick={viewUser}
+          >
+            User
+          </Link>
+          <Link
+            px={3}
+            py={2}
+            rounded="md"
+            _hover={{ bg: "gray.700", textDecoration: "none" }}
+            onClick={viewAusleihen}
+          >
+            Ausleihen
+          </Link>
+          <Link
+            px={3}
+            py={2}
+            rounded="md"
+            _hover={{ bg: "gray.700", textDecoration: "none" }}
+            onClick={viewGegenstaende}
+          >
+            Gegenstände
+          </Link>
+          <Link
+            px={3}
+            py={2}
+            rounded="md"
+            _hover={{ bg: "gray.700", textDecoration: "none" }}
+            onClick={viewSchliessfaecher}
+          >
+            Schließfächer
+          </Link>
+        </VStack>
+
+        <Box mt="auto" pt={8} fontSize="xs" color="gray.500">
+          <Text>&copy; Made with ❤️ by Theis Gaedigk</Text>
+        </Box>
+      </Flex>
+    </Box>
+  );
+};
+
+export default Sidebar;

admin/src/components/ItemTable.tsx

@@ -0,0 +1,7 @@
+import React from "react";
+
+const ItemTable: React.FC = () => {
+  return <>Item Table</>;
+};
+
+export default ItemTable;

admin/src/components/LoanTable.tsx

@@ -0,0 +1,7 @@
+import React from "react";
+
+const LoanTable: React.FC = () => {
+  return <>Loan Table</>;
+};
+
+export default LoanTable;

admin/src/components/LockerTable.tsx

@@ -0,0 +1,7 @@
+import React from "react";
+
+const LockerTable: React.FC = () => {
+  return <>Locker Table</>;
+};
+
+export default LockerTable;

admin/src/components/UserTable.tsx

@@ -0,0 +1,7 @@
+import React from "react";
+
+const UserTable: React.FC = () => {
+  return <>User Table</>;
+};
+
+export default UserTable;

admin/src/components/myChakra/MyAlert.tsx

@@ -0,0 +1,21 @@
+import React from "react";
+import { Alert } from "@chakra-ui/react";
+
+type MyAlertProps = {
+  title: string;
+  description: string;
+};
+
+const MyAlert: React.FC<MyAlertProps> = ({ title, description }) => {
+  return (
+    <Alert.Root status="error">
+      <Alert.Indicator />
+      <Alert.Content>
+        <Alert.Title>{title}</Alert.Title>
+        <Alert.Description>{description}</Alert.Description>
+      </Alert.Content>
+    </Alert.Root>
+  );
+};
+
+export default MyAlert;

admin/src/utils/loginUser.ts

@@ -0,0 +1,43 @@
+import Cookies from "js-cookie";
+
+export type LoginSuccess = { success: true };
+export type LoginFailure = {
+  success: false;
+  message: string;
+  description: string;
+};
+export type LoginResult = LoginSuccess | LoginFailure;
+
+export const loginFunc = async (
+  username: string,
+  password: string
+): Promise<LoginResult> => {
+  try {
+    const response = await fetch("http://localhost:8002/api/loginAdmin", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ username, password }),
+    });
+
+    if (!response.ok) {
+      return {
+        success: false,
+        message: "Login failed!",
+        description: "Invalid username or password.",
+      };
+    }
+
+    // Successful login
+    const data = await response.json();
+    Cookies.set("token", data.token);
+    localStorage.setItem("userName", data.first_name);
+    return { success: true };
+  } catch (error) {
+    console.error("Error logging in:", error);
+    return {
+      success: false,
+      message: "Login failed!",
+      description: "Server error.",
+    };
+  }
+};

admin/src/utils/toastify.ts

@@ -0,0 +1,18 @@
+import { toast, Flip, type ToastOptions } from "react-toastify";
+
+export type ToastType = "success" | "error" | "info" | "warning";
+
+export const myToast = (message: string, msgType: ToastType) => {
+  let config: ToastOptions = {
+    position: "top-right",
+    autoClose: 3000,
+    hideProgressBar: false,
+    closeOnClick: true,
+    pauseOnHover: true,
+    draggable: true,
+    progress: undefined,
+    theme: "colored",
+    transition: Flip,
+  };
+  toast[msgType](message, config);
+};