Add admin login page and required logic

components/ProtectedRoute.tsx

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+"use client";
+
+import { useRouter } from "next/navigation";
+import { useEffect } from "react";
+import { useAuth } from "@/context/AuthContext";
+import LoadingSpinner from "./LoadingSpinner";
+
+export default function ProtectedRoute({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  const { authState } = useAuth();
+  const router = useRouter();
+
+  useEffect(() => {
+    if (!authState.isLoading && !authState.isAuthenticated) {
+      router.push("/login");
+    }
+  }, [authState.isAuthenticated, authState.isLoading, router]);
+
+  if (authState.isLoading) {
+    return <LoadingSpinner />;
+  }
+
+  return authState.isAuthenticated ? children : null;
+}

components/login-form.tsx

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+"use client";
+
+import { useState } from "react";
+import Link from "next/link";
+import { useAuth } from "@/context/AuthContext";
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
+import { Terminal, CheckCircle } from "lucide-react";
+import Image from "next/image";
+
+import Logo from "../public/logo.png";
+
+export function LoginForm({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+  const [successMessage, setSuccessMessage] = useState<string | null>(null);
+  const { login, isLoading, error } = useAuth();
+
+  const handleSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+    setSuccessMessage(null); // Clear success message on new attempt
+    await login(email, password);
+  };
+
+  return (
+    <div className={cn("flex flex-col gap-10", className)} {...props}>
+      <Card className="shadow- xl">
+        <CardHeader className="flex flex-col items-center gap-10 justify-center text-2xl py-5">
+          <Image src={Logo} alt="ExamaJam Logo" className="w-72" />
+          <CardTitle>Welcome to ExamJam</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <form onSubmit={handleSubmit}>
+            <div className="flex flex-col gap-7">
+              {error && (
+                <Alert variant="destructive">
+                  <Terminal className="h-4 w-4" />
+                  <AlertTitle>Login Error</AlertTitle>
+                  <AlertDescription>{error}</AlertDescription>
+                </Alert>
+              )}
+              {successMessage && (
+                <Alert className="border-green-500 text-green-700">
+                  <CheckCircle className="h-4 w-4 text-green-500" />
+                  <AlertTitle>Success</AlertTitle>
+                  <AlertDescription>{successMessage}</AlertDescription>
+                </Alert>
+              )}
+              <div className="grid gap-3">
+                <Label htmlFor="email">Email</Label>
+                <Input
+                  id="email"
+                  type="email"
+                  placeholder="Enter your email"
+                  required
+                  value={email}
+                  onChange={(e) => setEmail(e.target.value)}
+                  disabled={isLoading}
+                />
+              </div>
+              <div className="grid gap-3">
+                <div className="flex items-center">
+                  <Label htmlFor="password">Password</Label>
+                </div>
+                <Input
+                  id="password"
+                  type="password"
+                  placeholder="Enter your password"
+                  required
+                  value={password}
+                  onChange={(e) => setPassword(e.target.value)}
+                  disabled={isLoading}
+                />
+              </div>
+              <div className="flex flex-col gap-3">
+                <Button
+                  type="submit"
+                  className="w-full cursor-pointer bg-[#113768] hover:bg-[#113768c2] py-6 text-md"
+                  disabled={isLoading}
+                >
+                  {isLoading ? "Logging in..." : "Login"}
+                </Button>
+              </div>
+            </div>
+            <div className="mt-4 text-center text-md">
+              Don&apos;t have an account?{" "}
+              <Link href="/register" className="font-bold text-[#113768]">
+                Sign up
+              </Link>
+            </div>
+          </form>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

components/ui/alert.tsx

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+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const alertVariants = cva(
+  "relative w-full rounded-lg border px-4 py-3 text-sm grid has-[>svg]:grid-cols-[calc(var(--spacing)*4)_1fr] grid-cols-[0_1fr] has-[>svg]:gap-x-3 gap-y-0.5 items-start [&>svg]:size-4 [&>svg]:translate-y-0.5 [&>svg]:text-current",
+  {
+    variants: {
+      variant: {
+        default: "bg-card text-card-foreground",
+        destructive:
+          "text-destructive bg-card [&>svg]:text-current *:data-[slot=alert-description]:text-destructive/90",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+function Alert({
+  className,
+  variant,
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof alertVariants>) {
+  return (
+    <div
+      data-slot="alert"
+      role="alert"
+      className={cn(alertVariants({ variant }), className)}
+      {...props}
+    />
+  )
+}
+
+function AlertTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="alert-title"
+      className={cn(
+        "col-start-2 line-clamp-1 min-h-4 font-medium tracking-tight",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AlertDescription({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="alert-description"
+      className={cn(
+        "text-muted-foreground col-start-2 grid justify-items-start gap-1 text-sm [&_p]:leading-relaxed",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Alert, AlertTitle, AlertDescription }

components/ui/button.tsx

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+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+  {
+    variants: {
+      variant: {
+        default:
+          "bg-primary text-primary-foreground shadow-xs hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-white shadow-xs hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        outline:
+          "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50",
+        secondary:
+          "bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80",
+        ghost:
+          "hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2 has-[>svg]:px-3",
+        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
+        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
+        icon: "size-9",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Button({
+  className,
+  variant,
+  size,
+  asChild = false,
+  ...props
+}: React.ComponentProps<"button"> &
+  VariantProps<typeof buttonVariants> & {
+    asChild?: boolean
+  }) {
+  const Comp = asChild ? Slot : "button"
+
+  return (
+    <Comp
+      data-slot="button"
+      className={cn(buttonVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Button, buttonVariants }

components/ui/card.tsx

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+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+function Card({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card"
+      className={cn(
+        "bg-card text-card-foreground flex flex-col gap-6 rounded-xl border py-6 shadow-sm",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-header"
+      className={cn(
+        "@container/card-header grid auto-rows-min grid-rows-[auto_auto] items-start gap-1.5 px-6 has-data-[slot=card-action]:grid-cols-[1fr_auto] [.border-b]:pb-6",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-title"
+      className={cn("leading-none font-semibold", className)}
+      {...props}
+    />
+  )
+}
+
+function CardDescription({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-description"
+      className={cn("text-muted-foreground text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+function CardAction({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-action"
+      className={cn(
+        "col-start-2 row-span-2 row-start-1 self-start justify-self-end",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-content"
+      className={cn("px-6", className)}
+      {...props}
+    />
+  )
+}
+
+function CardFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-footer"
+      className={cn("flex items-center px-6 [.border-t]:pt-6", className)}
+      {...props}
+    />
+  )
+}
+
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardAction,
+  CardDescription,
+  CardContent,
+}

components/ui/input.tsx

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+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+function Input({ className, type, ...props }: React.ComponentProps<"input">) {
+  return (
+    <input
+      type={type}
+      data-slot="input"
+      className={cn(
+        "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground dark:bg-input/30 border-input flex h-9 w-full min-w-0 rounded-md border bg-transparent px-3 py-1 text-base shadow-xs transition-[color,box-shadow] outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]",
+        "aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Input }

components/ui/label.tsx

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+"use client"
+
+import * as React from "react"
+import * as LabelPrimitive from "@radix-ui/react-label"
+
+import { cn } from "@/lib/utils"
+
+function Label({
+  className,
+  ...props
+}: React.ComponentProps<typeof LabelPrimitive.Root>) {
+  return (
+    <LabelPrimitive.Root
+      data-slot="label"
+      className={cn(
+        "flex items-center gap-2 text-sm leading-none font-medium select-none group-data-[disabled=true]:pointer-events-none group-data-[disabled=true]:opacity-50 peer-disabled:cursor-not-allowed peer-disabled:opacity-50",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Label }