Issue 46 add custom 404 page

client/src/pages/404.tsx

@@ -0,0 +1,205 @@
+"use client";
+
+import Link from "next/link";
+import { useEffect, useState } from "react";
+
+import { Button } from "@/components/ui/button";
+import TRIVIA from "@/trivia.json";
+
+interface Trivia {
+  question: string;
+  answer: string;
+}
+
+export default function Custom404() {
+  const [gameQuestions, setGameQuestions] = useState<Trivia[]>([]);
+  const [currentQuestionIndex, setCurrentQuestionIndex] = useState(0);
+  const [score, setScore] = useState(0);
+  const [gameActive, setGameActive] = useState(false);
+  const [timeLeft, setTimeLeft] = useState(30);
+  const [answered, setAnswered] = useState(false);
+  const [selectedAnswer, setSelectedAnswer] = useState<string | null>(null);
+  const [options, setOptions] = useState<string[]>([]);
+
+  const currentTrivia = gameQuestions[currentQuestionIndex];
+
+  const generateQuestions = () => {
+    const shuffled = TRIVIA.sort(() => Math.random() - 0.5).slice(0, 10);
+    setGameQuestions(shuffled);
+  };
+
+  useEffect(() => {
+    if (!currentTrivia) return;
+
+    const wrongAnswers = TRIVIA.filter((t) => t.answer !== currentTrivia.answer)
+      .sort(() => Math.random() - 0.5)
+      .slice(0, 3)
+      .map((t) => t.answer);
+
+    const allOptions = [currentTrivia.answer, ...wrongAnswers].sort(
+      () => Math.random() - 0.5,
+    );
+    setOptions(allOptions);
+  }, [currentQuestionIndex, currentTrivia]);
+
+  useEffect(() => {
+    if (!gameActive || timeLeft <= 0) return;
+
+    const timer = setInterval(() => {
+      setTimeLeft((prev) => {
+        if (prev <= 1) {
+          setGameActive(false);
+          return 0;
+        }
+        return prev - 1;
+      });
+    }, 1000);
+
+    return () => clearInterval(timer);
+  }, [gameActive, timeLeft]);
+
+  const startGame = () => {
+    generateQuestions();
+    setGameActive(true);
+    setCurrentQuestionIndex(0);
+    setScore(0);
+    setTimeLeft(30);
+    setAnswered(false);
+    setSelectedAnswer(null);
+  };
+
+  const handleAnswer = (answer: string) => {
+    if (answered) return;
+
+    setSelectedAnswer(answer);
+    setAnswered(true);
+
+    if (answer === currentTrivia.answer) {
+      setScore((prev) => prev + 1);
+    }
+
+    setTimeout(() => {
+      if (currentQuestionIndex < gameQuestions.length - 1) {
+        setCurrentQuestionIndex((prev) => prev + 1);
+        setAnswered(false);
+        setSelectedAnswer(null);
+      } else {
+        setGameActive(false);
+      }
+    }, 1000);
+  };
+
+  const getButtonClass = (option: string) => {
+    const baseClass =
+      "w-full p-3 text-left rounded border transition-all cursor-pointer";
+
+    if (!answered) {
+      return `${baseClass} bg-card border-border text-foreground hover:border-accent`;
+    }
+
+    if (option === currentTrivia.answer) {
+      return `${baseClass} bg-accent border-accent text-accent-foreground font-semibold`;
+    }
+
+    if (option === selectedAnswer && option !== currentTrivia.answer) {
+      return `${baseClass} bg-secondary border-secondary text-secondary-foreground`;
+    }
+
+    return `${baseClass} bg-muted border-border text-muted-foreground`;
+  };
+
+  return (
+    <main className="mx-auto min-h-dvh max-w-6xl px-6 py-16 md:px-20">
+      <div className="mx-auto w-full max-w-2xl">
+        <h1 className="mb-8 text-center font-jersey10 text-6xl text-primary">
+          404
+        </h1>
+        <h2 className="mb-4 text-center font-jersey10 text-2xl text-foreground">
+          Page Not Found
+        </h2>
+
+        <p className="mb-8 text-center text-foreground">
+          Test your game knowledge with some rapid-fire trivia instead!!!
+        </p>
+
+        {!gameActive ? (
+          <div className="mb-8 space-y-4">
+            {gameQuestions.length === 0 ? (
+              <>
+                <p className="mb-4 text-muted-foreground">
+                  Answer 10 random gaming trivia questions in 30 seconds!
+                </p>
+                <Button onClick={startGame} className="w-full">
+                  Start Trivia
+                </Button>
+              </>
+            ) : (
+              <>
+                <p className="mb-4 text-center font-jersey10 text-2xl font-bold text-primary">
+                  Game Over!
+                </p>
+                <p className="mb-4 text-center text-foreground">
+                  Final Score:
+                  <span className="text-xl font-bold text-primary">
+                    {score}
+                  </span>{" "}
+                  / 10
+                </p>
+                <Button onClick={startGame} className="w-full">
+                  Play Again
+                </Button>
+              </>
+            )}
+          </div>
+        ) : (
+          <div className="mb-8 space-y-6">
+            <div className="mb-4 flex items-center justify-between">
+              <p className="text-sm text-muted-foreground">
+                Question {currentQuestionIndex + 1} / 10
+              </p>
+              <div
+                className={`font-jersey10 text-3xl font-bold ${
+                  timeLeft <= 10 ? "text-destructive" : "text-primary"
+                }`}
+              >
+                {timeLeft}s
+              </div>
+            </div>
+
+            <div className="space-y-6 rounded border border-border bg-card p-6">
+              <p className="text-lg text-foreground">
+                {currentTrivia.question}
+              </p>
+
+              <div className="space-y-3">
+                {options.map((option, idx) => (
+                  <button
+                    key={idx}
+                    onClick={() => handleAnswer(option)}
+                    className={getButtonClass(option)}
+                    disabled={answered}
+                  >
+                    {option}
+                  </button>
+                ))}
+              </div>
+
+              <p className="text-sm text-foreground">
+                Score:{" "}
+                <span className="font-jersey10 font-bold text-primary">
+                  {score} / 10
+                </span>
+              </p>
+            </div>
+          </div>
+        )}
+
+        <Link href="/">
+          <Button variant="outline" className="w-full">
+            Go Home
+          </Button>
+        </Link>
+      </div>
+    </main>
+  );
+}