Forgot Password Form

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import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";
 
export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

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"use client";
 
import {
  forwardRef,
  useCallback,
  useId,
  useState,
  type ComponentPropsWithoutRef,
  type FormEvent,
  type ReactNode,
} from "react";
 
import Link from "next/link";
 
import { AlertCircle, ArrowLeft, ArrowRight, Check, KeyRound, Loader2 } from "lucide-react";
 
import { cn } from "@/lib/cn";
 
const EMAIL_RE = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
 
type FormLinkProps = Readonly<{
  href: string;
  className?: string;
  children: ReactNode;
}>;
 
function isPlaceholderHref(href: string): boolean {
  return !href || href === "#";
}
 
function FormLink({ href, className, children }: FormLinkProps) {
  if (isPlaceholderHref(href)) {
    return (
      <button type="button" className={cn("cursor-pointer", className)}>
        {children}
      </button>
    );
  }
 
  return (
    <Link href={href} className={className}>
      {children}
    </Link>
  );
}
 
export type ForgotPasswordFormProps = Readonly<
  {
    title?: string;
    subtitle?: string;
    submitLabel?: string;
    successTitle?: string;
    successMessage?: string;
    backLabel?: string;
    backHref?: string;
    submitErrorMessage?: string;
    loading?: boolean;
    onSubmit?: (email: string) => void | Promise<void>;
  } & Omit<ComponentPropsWithoutRef<"form">, "onSubmit">
>;
 
export const ForgotPasswordForm = forwardRef<HTMLDivElement, ForgotPasswordFormProps>(
  function ForgotPasswordForm(
    {
      className,
      title = "Reset your password",
      subtitle = "Enter the email linked to your account and we'll send a reset link.",
      submitLabel = "Send reset link",
      successTitle = "Check your inbox",
      successMessage = "If an account exists for that email, you'll receive reset instructions shortly.",
      backLabel = "Back to sign in",
      backHref = "/components/login-form",
      submitErrorMessage = "We couldn't send the reset email. Please try again.",
      loading = false,
      onSubmit,
      onReset,
      ...props
    },
    ref,
  ) {
    const formId = useId();
    const [email, setEmail] = useState("");
    const [error, setError] = useState("");
    const [submitError, setSubmitError] = useState("");
    const [submitting, setSubmitting] = useState(false);
    const [success, setSuccess] = useState(false);
    const [sentTo, setSentTo] = useState("");
 
    const busy = loading || submitting;
 
    const handleSubmit = useCallback(
      async (event: FormEvent<HTMLFormElement>) => {
        event.preventDefault();
        if (busy || success) return;
 
        const trimmed = email.trim();
        if (!trimmed) {
          setError("Email is required.");
          return;
        }
        if (!EMAIL_RE.test(trimmed)) {
          setError("Enter a valid email address.");
          return;
        }
 
        setError("");
        setSubmitError("");
        setSubmitting(true);
        try {
          await onSubmit?.(trimmed);
          setSentTo(trimmed);
          setSuccess(true);
        } catch {
          setSubmitError(submitErrorMessage);
        } finally {
          setSubmitting(false);
        }
      },
      [busy, email, onSubmit, submitErrorMessage, success],
    );
 
    const handleReset = useCallback(
      (event: FormEvent<HTMLFormElement>) => {
        onReset?.(event);
        if (event.defaultPrevented) return;
        setEmail("");
        setError("");
        setSubmitError("");
      },
      [onReset],
    );
 
    if (success) {
      return (
        <div
          ref={ref}
          data-slot="forgot-password-form"
          data-success
          role="status"
          aria-live="polite"
          className={cn(
            "w-full max-w-md rounded-3xl border border-neutral-200 bg-white p-6 font-sans shadow-sm md:p-8",
            className,
          )}
        >
          <div className="mb-5 flex items-center gap-2 text-[11px] font-semibold tracking-[0.18em] text-emerald-700 uppercase">
            <Check size={15} strokeWidth={2} aria-hidden />
            Email dispatched
          </div>
          <h2 className="font-serif text-3xl leading-none tracking-tight text-neutral-950">{successTitle}</h2>
          <p className="mt-3 text-sm leading-6 text-neutral-500">{successMessage}</p>
          {sentTo ? (
            <p className="mt-4 border-l-2 border-emerald-500 bg-emerald-50 px-3 py-2.5 font-mono text-xs text-neutral-700">
              {sentTo}
            </p>
          ) : null}
          <FormLink
            href={backHref}
            className="mt-6 inline-flex items-center gap-1.5 text-sm font-medium text-neutral-900 underline-offset-2 hover:underline"
          >
            <ArrowLeft size={14} aria-hidden />
            {backLabel}
          </FormLink>
        </div>
      );
    }
 
    return (
      <div ref={ref} className={cn("w-full max-w-md", className)}>
      <form
        data-slot="forgot-password-form"
        noValidate
        onSubmit={handleSubmit}
        onReset={handleReset}
        aria-busy={busy}
        className="rounded-3xl border border-neutral-200 bg-white p-6 font-sans shadow-sm md:p-8"
        {...props}
      >
        <FormLink
          href={backHref}
          className="mb-5 inline-flex items-center gap-1.5 text-sm text-neutral-500 transition-colors hover:text-neutral-900"
        >
          <ArrowLeft size={14} aria-hidden />
          {backLabel}
        </FormLink>
 
        <div className="mb-7">
          <div className="mb-5 flex items-center gap-2 text-[11px] font-semibold tracking-[0.18em] text-neutral-500 uppercase">
            <KeyRound size={15} strokeWidth={1.75} aria-hidden />
            Account recovery
          </div>
          <h2 className="font-serif text-3xl leading-none tracking-tight text-neutral-950">{title}</h2>
          <p className="mt-3 max-w-sm text-sm leading-6 text-neutral-500">{subtitle}</p>
        </div>
 
        <div>
          <label htmlFor={`${formId}-email`} className="mb-1.5 block text-sm font-medium text-neutral-900">
            Email address
          </label>
          <input
            id={`${formId}-email`}
            name="email"
            type="email"
            autoComplete="email"
            disabled={busy}
            value={email}
            aria-invalid={Boolean(error)}
            aria-describedby={error ? `${formId}-email-error` : undefined}
            onChange={(event) => {
              setEmail(event.target.value);
              setSubmitError("");
              if (error) setError("");
            }}
            className={cn(
              "h-11 w-full rounded-md border bg-white px-3.5 text-sm outline-none ring-0 transition-colors focus:ring-0 disabled:bg-neutral-50",
              error ? "border-rose-300" : "border-neutral-200 focus:border-neutral-900",
            )}
            placeholder="you@company.com"
          />
          {error ? (
            <p id={`${formId}-email-error`} role="alert" className="mt-1.5 text-xs text-rose-600">
              {error}
            </p>
          ) : null}
        </div>
 
        {submitError ? (
          <div
            role="alert"
            className="mt-5 flex items-start gap-2.5 border-l-2 border-rose-500 bg-rose-50 px-3 py-2.5 text-sm text-rose-700"
          >
            <AlertCircle size={16} className="mt-0.5 shrink-0" aria-hidden />
            <span>{submitError}</span>
          </div>
        ) : null}
 
        <button
          type="submit"
          disabled={busy}
          className="mt-6 flex h-11 w-full cursor-pointer items-center justify-center gap-2 rounded-md bg-neutral-950 px-4 text-sm font-semibold text-white transition-colors hover:bg-neutral-800 focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-neutral-900 disabled:cursor-not-allowed disabled:opacity-60"
        >
          {busy ? <Loader2 size={16} className="animate-spin" aria-hidden /> : null}
          {busy ? "Sending…" : submitLabel}
          {!busy ? <ArrowRight size={15} aria-hidden /> : null}
        </button>
      </form>
      </div>
    );
  },
);
 
ForgotPasswordForm.displayName = "ForgotPasswordForm";