import { useState, useEffect, useCallback, useRef } from "react"; import OTPInput from "./components/OTPInput"; import C

Evaluation prompt

import { useState, useEffect, useCallback, useRef } from "react"; import OTPInput from "./components/OTPInput"; import CountdownTimer from "./components/CountdownTimer"; import Confetti from "./components/Confetti"; import MethodSelector, { VerifyMethod, METHODS } from "./components/MethodSelector"; import { cn } from "./utils/cn"; /* ─── Constants ───────────────────────────────────────────── */ const CORRECT_OTP = "123456"; const TIMER_DURATION = 30; type VerifyState = "idle" | "verifying" | "error" | "success"; /* ─── Tiny helpers ────────────────────────────────────────── */ function SuccessCheckIcon() { return ( <svg className="w-8 h-8" viewBox="0 0 24 24" fill="none" stroke="#22c55e" strokeWidth="2.5"> <path strokeLinecap="round" strokeLinejoin="round" d="M5 13l4 4L19 7" className="animate-success-check" /> </svg> ); } function LockIcon({ pulse }: { pulse?: boolean }) { return ( <svg className={cn("w-8 h-8 text-[#F15A24]", pulse && "animate-pulse")} fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth="1.8" > <path strokeLinecap="round" strokeLinejoin="round" d="M16.5 10.5V6.75a4.5 4.5 0 10-9 0v3.75m-.75 11.25h10.5a2.25 2.25 0 002.25-2.25v-6.75a2.25 2.25 0 00-2.25-2.25H6.75a2.25 2.25 0 00-2.25 2.25v6.75a2.25 2.25 0 002.25 2.25z" /> </svg> ); } /* ─── Main App ────────────────────────────────────────────── */ export default function App() { const [state, setState] = useState<VerifyState>("idle"); const [method, setMethod] = useState<VerifyMethod>("email"); const [countdown, setCountdown] = useState(TIMER_DURATION); const [canResend, setCanResend] = useState(false); const [resending, setResending] = useState(false); const [otpKey, setOtpKey] = useState(0); const [attempts, setAttempts] = useState(0); const timerRef = useRef<ReturnType<typeof setInterval> | null>(null); /* ── Timer ── */ const startTimer = useCallback(() => { setCountdown(TIMER_DURATION); setCanResend(false); if (timerRef.current) clearInterval(timerRef.current); timerRef.current = setInterval(() => { setCountdown(prev => { if (prev <= 1) { clearInterval(timerRef.current!); setCanResend(true); return 0; } return prev - 1; }); }, 1000); }, []); useEffect(() => { startTimer(); return () => { if (timerRef.current) clearInterval(timerRef.current); }; }, [startTimer]); /* ── OTP submit ── */ const handleOTPComplete = useCallback((otp: string) => { setState("verifying"); setTimeout(() => { if (otp === CORRECT_OTP) { setState("success"); if (timerRef.current) clearInterval(timerRef.current); } else { setState("error"); setAttempts(a => a + 1); setTimeout(() => { setState("idle"); setOtpKey(k => k + 1); }, 820); } }, 1300); }, []); /* ── Method change ── */ const handleMethodChange = useCallback((m: VerifyMethod) => { if (state === "verifying" || state === "success") return; setMethod(m); setState("idle"); setOtpKey(k => k + 1); setAttempts(0); startTimer(); }, [state, startTimer]); /* ── Resend ── */ const handleResend = useCallback(() => { if (!canResend || resending) return; setResending(true); setAttempts(0); setTimeout(() => { setResending(false); setOtpKey(k => k + 1); setState("idle"); startTimer(); }, 1600); }, [canResend, resending, startTimer]); const isDisabled = state === "verifying" || state === "success"; const activeMethod = METHODS.find(m => m.id === method)!; return ( <div className="min-h-screen flex items-center justify-center p-4 relative overflow-hidden" style={{ backgroundColor: "#FAF8F5", fontFamily: "'Inter', system-ui, sans-serif" }} > {/* Subtle background texture blobs */} <div className="absolute inset-0 pointer-events-none overflow-hidden"> <div className="absolute -top-32 -right-32 w-[500px] h-[500px] rounded-full opacity-30" style={{ background: "radial-gradient(circle, #F8E8E0 0%, transparent 70%)" }} /> <div className="absolute -bottom-40 -left-40 w-[600px] h-[600px] rounded-full opacity-20" style={{ background: "radial-gradient(circle, #EDE9E2 0%, transparent 70%)" }} /> </div> {/* Confetti */} <Confetti show={state === "success"} /> {/* ── Card ── */} <div className="relative w-full max-w-[440px] animate-fade-in-up" style={{ animationDuration: "0.5s" }} > {/* Brand strip at top */} <div className="flex items-center justify-center mb-8"> <div className="flex items-center gap-2.5"> <div className="w-8 h-8 rounded-xl flex items-center justify-center" style={{ backgroundColor: "#111111" }} > <svg viewBox="0 0 20 20" fill="none" className="w-4 h-4"> <path d="M10 2L2 7v6l8 5 8-5V7L10 2z" fill="#F15A24" /> </svg> </div> <span className="text-sm font-semibold tracking-tight" style={{ color: "#111111" }}> Vertex </span> </div> </div> {/* Main floating card */} <div className="rounded-[28px] bg-white p-8 sm:p-10" style={{ boxShadow: "0 4px 6px rgba(0,0,0,0.03), 0 12px 36px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.02)", }} > {/* ── Icon badge ── */} <div className="flex justify-center mb-7"> <div className={cn( "relative w-16 h-16 rounded-[20px] flex items-center justify-center transition-all duration-400", state === "success" ? "bg-green-50" : state === "error" ? "bg-red-50" : "bg-[#FFF3EE]" )} > {state === "verifying" && ( <div className="absolute inset-0 rounded-[20px] border-2 border-[#F15A24] border-t-transparent animate-spin-slow opacity-40" /> )} {state === "success" ? <SuccessCheckIcon /> : state === "error" ? ( <svg className="w-8 h-8 text-red-400" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth="2"> <path strokeLinecap="round" strokeLinejoin="round" d="M12 9v4m0 4h.01M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z" /> </svg> ) : <LockIcon pulse={state === "verifying"} />} </div> </div> {/* ── Headline ── */} <div className="text-center mb-8"> <h1 className="text-[1.6rem] font-bold leading-tight tracking-tight mb-1.5" style={{ color: "#111111" }} > {state === "success" ? "You're verified" : "Verify your identity"} </h1> <p className="text-sm leading-relaxed" style={{ color: "#7D7D7D" }} > {state === "success" ? ( "Authentication successful. Welcome back." ) : state === "verifying" ? ( <span className="inline-flex items-center gap-2"> <span className="w-1.5 h-1.5 rounded-full bg-[#F15A24] animate-pulse inline-block" /> Checking your code… </span> ) : ( <> Enter the 6-digit code sent to{" "} <span className="font-medium" style={{ color: "#111111" }}> {activeMethod.destination} </span> </> )} </p> </div> {/* ── Method selector ── */} {state !== "success" && ( <div className="mb-8 animate-slide-in-tab"> <MethodSelector