Hold To Delete Button

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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,
  useEffect,
  useRef,
  useState,
  type ComponentPropsWithoutRef,
  type KeyboardEvent as ReactKeyboardEvent,
} from "react";
 
import { cn } from "@/lib/cn";
import { Check, Trash2 } from "lucide-react";
 
export type HoldToDeleteButtonProps = Readonly<
  {
    label?: string;
    doneLabel?: string;
    holdMs?: number;
    onHoldComplete?: () => void;
  } & Omit<ComponentPropsWithoutRef<"button">, "onHoldComplete">
>;
 
// Snap the requested hold time to a duration Tailwind can compile statically.
const HOLD_STEPS = [
  { ms: 500, className: "duration-500" },
  { ms: 700, className: "duration-700" },
  { ms: 1000, className: "duration-1000" },
  { ms: 1100, className: "duration-[1100ms]" },
  { ms: 1500, className: "duration-[1500ms]" },
  { ms: 2000, className: "duration-[2000ms]" },
] as const;
 
function nearestHoldStep(holdMs: number) {
  return HOLD_STEPS.reduce((best, step) =>
    Math.abs(step.ms - holdMs) < Math.abs(best.ms - holdMs) ? step : best,
  );
}
 
// Hold-to-delete — press and hold; the key sinks in while a rose fill wipes
// across. Release early and it eases back; hold to the end to delete.
export const HoldToDeleteButton = forwardRef<
  HTMLButtonElement,
  HoldToDeleteButtonProps
>(
  (
    {
      className,
      label = "Hold to delete",
      doneLabel = "Deleted",
      holdMs = 1100,
      onHoldComplete,
      ...props
    },
    ref,
  ) => {
    const [holding, setHolding] = useState(false);
    const [done, setDone] = useState(false);
    const timerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
 
    const step = nearestHoldStep(holdMs);
 
    useEffect(() => {
      return () => {
        if (timerRef.current !== null) globalThis.clearTimeout(timerRef.current);
      };
    }, []);
 
    const start = () => {
      if (done || timerRef.current !== null) return;
      setHolding(true);
      timerRef.current = globalThis.setTimeout(() => {
        timerRef.current = null;
        setHolding(false);
        setDone(true);
        onHoldComplete?.();
      }, step.ms);
    };
 
    const cancel = () => {
      if (timerRef.current !== null) {
        globalThis.clearTimeout(timerRef.current);
        timerRef.current = null;
      }
      setHolding(false);
    };
 
    const handleKeyDown = (event: ReactKeyboardEvent<HTMLButtonElement>) => {
      if (event.repeat) return;
      if (event.key === " " || event.key === "Enter") {
        event.preventDefault();
        start();
      }
    };
 
    const handleKeyUp = (event: ReactKeyboardEvent<HTMLButtonElement>) => {
      if (event.key === " " || event.key === "Enter") cancel();
    };
 
    // The rose fill slides in while its content slides the opposite way at the
    // same speed, so the white label looks clipped by the moving red edge.
    const wipeMotion = cn(
      "transition-transform motion-reduce:transition-none motion-reduce:transform-none",
      holding || done
        ? cn("ease-linear", step.className)
        : "duration-300 ease-out",
    );
 
    return (
      <button
        ref={ref}
        type="button"
        data-slot="hold-to-delete-button"
        data-holding={holding || undefined}
        data-done={done || undefined}
        aria-label={done ? doneLabel : label}
        onPointerDown={start}
        onPointerUp={cancel}
        onPointerLeave={cancel}
        onPointerCancel={cancel}
        onKeyDown={handleKeyDown}
        onKeyUp={handleKeyUp}
        onContextMenu={(event) => event.preventDefault()}
        disabled={done}
        className={cn(
          "relative flex h-12 w-56 touch-none items-center justify-center overflow-hidden rounded-xl bg-neutral-50 font-sans text-sm font-medium outline-none select-none",
          "transition-shadow duration-300 ease-[cubic-bezier(0.32,0.72,0,1)] motion-reduce:transition-none",
          "focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-rose-600",
          // Outer keycap shadows only — the inset bevels live on an overlay so
          // they stay visible above the red fill.
          "shadow-[0_0_0_1px_rgba(0,0,0,0.06),0_1px_1px_rgba(0,0,0,0.12),0_2px_3px_rgba(0,0,0,0.12)]",
          (holding || done) && "shadow-[0_0_0_1px_rgba(0,0,0,0.06),0_1px_1px_rgba(0,0,0,0.06)]",
          !done && "cursor-pointer",
          className,
        )}
        {...props}
      >
        {/* Idle label — crisp, no engraving so the rose text stays readable. */}
        <span className="flex items-center justify-center gap-2 text-rose-600">
          <Trash2 size={15} strokeWidth={2} aria-hidden />
          {label}
        </span>
 
        {/* Solid rose fill wiping left to right, clipping in the white label. */}
        <span
          aria-hidden
          className={cn(
            // overflow-hidden clips the counter-translated label so it is only
            // revealed by the fill's moving edge.
            "absolute inset-0 overflow-hidden bg-rose-600",
            wipeMotion,
            holding || done ? "translate-x-0" : "-translate-x-full",
          )}
        >
          <span
            className={cn(
              "absolute inset-0 flex items-center justify-center gap-2 text-white",
              wipeMotion,
              holding || done ? "translate-x-0" : "translate-x-full",
              "transition-[transform,opacity]",
              // Once deleted, the hold label slowly fades out first...
              done ? "opacity-0 duration-300 ease-out" : "opacity-100",
            )}
          >
            <Trash2 size={15} strokeWidth={2} aria-hidden />
            {label}
          </span>
 
          {/* ...then the done label fades in after it. */}
          <span
            className={cn(
              "absolute inset-0 flex items-center justify-center gap-2 text-white",
              "transition-opacity duration-500 ease-out motion-reduce:transition-none",
              done ? "opacity-100 delay-300" : "opacity-0",
            )}
          >
            <Check size={15} strokeWidth={2.5} aria-hidden />
            {doneLabel}
          </span>
        </span>
 
        {/* Bevel overlay above the fill so the key stays 3D while turning red:
            faint white bevel on top, sunken shading top and bottom. */}
        <span
          aria-hidden
          className={cn(
            "pointer-events-none absolute inset-0 rounded-[inherit]",
            "transition-shadow duration-300 ease-[cubic-bezier(0.32,0.72,0,1)] motion-reduce:transition-none",
            holding || done
              ? "shadow-[inset_0_1px_0_rgba(255,255,255,0.25),inset_0_2px_4px_rgba(0,0,0,0.25),inset_0_-2px_3px_rgba(0,0,0,0.2)]"
              : "shadow-[inset_0_-2px_3px_rgba(0,0,0,0.08)]",
          )}
        />
 
        <span className="sr-only" aria-live="polite">
          {done ? doneLabel : ""}
        </span>
      </button>
    );
  },
);
 
HoldToDeleteButton.displayName = "HoldToDeleteButton";