Stamp

import type { CSSProperties, ReactNode } from "react";import { cn } from "@/helpers/classname-helper";const stampShadow =  "drop-shadow(0 1px 1px rgb(15 15 15 / 12%)) drop-shadow(0 12px 22px rgb(15 15 15 / 9%))";const stampBackground =  "linear-gradient(145deg, rgb(255 255 255 / 34%), transparent 42%), var(--stamp-paper)";type StampCustomProperty = "--stamp-ink" | "--stamp-padding" | "--stamp-paper";type StampRootStyle = CSSProperties &  Partial<Record<StampCustomProperty, string>>;type CssLength = number | string;export type StampProps = {  /** Any React content rendered inside the perforated paper frame. */  children: ReactNode;  "aria-hidden"?: boolean;  "aria-label"?: string;  className?: string;  contentClassName?: string;  horizontalPerforations?: number;  ink?: string;  padding?: CssLength;  paper?: string;  perforationDepth?: number;  stampClassName?: string;  style?: CSSProperties;  verticalPerforations?: number;};function toCssLength(value: CssLength) {  return typeof value === "number" ? `${value}px` : value;}function clamp(value: number, minimum: number, maximum: number) {  return Math.min(Math.max(value, minimum), maximum);}function createStampClipPath({  depth,  horizontalCount,  verticalCount,}: {  depth: number;  horizontalCount: number;  verticalCount: number;}) {  const resolvedDepth = clamp(depth, 0, 10);  const resolvedHorizontalCount = clamp(Math.round(horizontalCount), 4, 32);  const resolvedVerticalCount = clamp(Math.round(verticalCount), 4, 40);  const horizontalStep = 100 / resolvedHorizontalCount;  const verticalStep = 100 / resolvedVerticalCount;  const points: Array<[number, number]> = [[0, 0]];  for (let index = 0; index < resolvedHorizontalCount; index += 1) {    const start = index * horizontalStep;    points.push([start + horizontalStep * 0.25, 0]);    points.push([start + horizontalStep * 0.5, resolvedDepth]);    points.push([start + horizontalStep * 0.75, 0]);    points.push([start + horizontalStep, 0]);  }  for (let index = 0; index < resolvedVerticalCount; index += 1) {    const start = index * verticalStep;    points.push([100, start + verticalStep * 0.25]);    points.push([100 - resolvedDepth, start + verticalStep * 0.5]);    points.push([100, start + verticalStep * 0.75]);    points.push([100, start + verticalStep]);  }  for (let index = 0; index < resolvedHorizontalCount; index += 1) {    const start = 100 - index * horizontalStep;    points.push([start - horizontalStep * 0.25, 100]);    points.push([start - horizontalStep * 0.5, 100 - resolvedDepth]);    points.push([start - horizontalStep * 0.75, 100]);    points.push([start - horizontalStep, 100]);  }  for (let index = 0; index < resolvedVerticalCount; index += 1) {    const start = 100 - index * verticalStep;    points.push([0, start - verticalStep * 0.25]);    points.push([resolvedDepth, start - verticalStep * 0.5]);    points.push([0, start - verticalStep * 0.75]);    points.push([0, start - verticalStep]);  }  return `polygon(${points    .map(([x, y]) => `${x.toFixed(3)}% ${y.toFixed(3)}%`)    .join(", ")})`;}export function Stamp({  "aria-hidden": ariaHidden,  "aria-label": ariaLabel,  children,  className,  contentClassName,  horizontalPerforations = 12,  ink = "#181713",  padding = 13,  paper = "#ffffff",  perforationDepth = 2.4,  stampClassName,  style,  verticalPerforations = 15,}: StampProps) {  const clipPath = createStampClipPath({    depth: perforationDepth,    horizontalCount: horizontalPerforations,    verticalCount: verticalPerforations,  });  const rootStyle: StampRootStyle = {    "--stamp-ink": ink,    "--stamp-padding": toCssLength(padding),    "--stamp-paper": paper,    filter: stampShadow,    ...style,  };  return (    <div      className={cn("relative aspect-[4/5] w-[min(100%,14rem)]", className)}      style={rootStyle}    >      <article        aria-hidden={ariaHidden}        aria-label={ariaHidden ? undefined : ariaLabel}        className={cn(          "relative size-full overflow-hidden p-[var(--stamp-padding)] text-[var(--stamp-ink)]",          stampClassName,        )}        style={{ background: stampBackground, clipPath }}      >        <div          className={cn(            "relative size-full min-h-0 min-w-0 overflow-hidden",            contentClassName,          )}        >          {children}        </div>      </article>    </div>  );}