图片徽章

// components/ui/images-badge.tsx
"use client";

import React, { useState } from "react";
import { motion } from "motion/react";
import { cn } from "@/lib/utils";

interface ImagesBadgeProps {
  text: string;
  images: string[];
  className?: string;
  /** 可选链接 URL */
  href?: string;
  /** 链接的 target 属性（例如，用于在新标签页打开的 "_blank"） */
  target?: string;
  /** 文件夹尺寸 { width, height }，单位为像素 */
  folderSize?: { width: number; height: number };
  /** 图片露出时的尺寸 { width, height }，单位为像素 */
  teaserImageSize?: { width: number; height: number };
  /** 悬停时的图片尺寸 { width, height }，单位为像素 */
  hoverImageSize?: { width: number; height: number };
  /** 悬停时图片向上平移的像素数 */
  hoverTranslateY?: number;
  /** 悬停时图片水平展开的像素数 */
  hoverSpread?: number;
  /** 悬停时扇形展开图片的旋转角度，单位为度 */
  hoverRotation?: number;
}

export function ImagesBadge({
  text,
  images,
  className,
  href,
  target,
  folderSize = { width: 32, height: 24 },
  teaserImageSize = { width: 20, height: 14 },
  hoverImageSize = { width: 48, height: 32 },
  hoverTranslateY = -35,
  hoverSpread = 20,
  hoverRotation = 15,
}: ImagesBadgeProps) {
  const [isHovered, setIsHovered] = useState(false);

  // 最多限制为 3 张图片
  const displayImages = images.slice(0, 3);

  // 按比例计算文件夹标签尺寸
  const tabWidth = folderSize.width * 0.375;
  const tabHeight = folderSize.height * 0.25;

  const Component = href ? "a" : "div";

  return (
    <Component
      href={href}
      target={target}
      rel={target === "_blank" ? "noopener noreferrer" : undefined}
      className={cn(
        "inline-flex cursor-pointer items-center gap-2 perspective-[1000px] transform-3d",
        className,
      )}
      onMouseEnter={() => setIsHovered(true)}
      onMouseLeave={() => setIsHovered(false)}
    >
      {/* 文件夹容器 */}
      <motion.div
        className="relative"
        style={{
          width: folderSize.width,
          height: folderSize.height,
          transformStyle: "preserve-3d",
        }}
      >
        {/* 文件夹背面 */}
        <div className="absolute inset-0 rounded-[4px] bg-gradient-to-b from-amber-400 to-amber-500 shadow-sm dark:from-amber-500 dark:to-amber-600">
          {/* 文件夹标签 */}
          <div
            className="absolute left-0.5 rounded-t-[2px] bg-gradient-to-b from-amber-300 to-amber-400 dark:from-amber-400 dark:to-amber-500"
            style={{
              top: -tabHeight * 0.65,
              width: tabWidth,
              height: tabHeight,
            }}
          />
        </div>

        {/* 弹出的图片 */}
        {displayImages.map((image, index) => {
          const totalImages = displayImages.length;

          // 根据索引计算旋转角度
          const baseRotation =
            totalImages === 1
              ? 0
              : totalImages === 2
                ? (index - 0.5) * hoverRotation
                : (index - 1) * hoverRotation;

          // 悬停位置——扇形展开
          const hoverY = hoverTranslateY - (totalImages - 1 - index) * 3;
          const hoverX =
            totalImages === 1
              ? 0
              : totalImages === 2
                ? (index - 0.5) * hoverSpread
                : (index - 1) * hoverSpread;

          // 预览位置——从文件夹中略微露出
          const teaseY = -4 - (totalImages - 1 - index) * 1;
          const teaseRotation =
            totalImages === 1
              ? 0
              : totalImages === 2
                ? (index - 0.5) * 3
                : (index - 1) * 3;

          return (
            <motion.div
              key={index}
              className="absolute top-0.5 left-1/2 origin-bottom overflow-hidden rounded-[3px] bg-white shadow-sm ring-1 shadow-black/10 ring-black/10 dark:bg-neutral-800 dark:shadow-white/10 dark:ring-white/10"
              animate={{
                x: `calc(-50% + ${isHovered ? hoverX : 0}px)`,
                y: isHovered ? hoverY : teaseY,
                rotate: isHovered ? baseRotation : teaseRotation,
                width: isHovered ? hoverImageSize.width : teaserImageSize.width,
                height: isHovered
                  ? hoverImageSize.height
                  : teaserImageSize.height,
              }}
              transition={{
                type: "spring",
                stiffness: 400,
                damping: 25,
                delay: index * 0.03,
              }}
              style={{
                zIndex: 10 + index,
              }}
            >
              <img
                src={image}
                alt={`预览 ${index + 1}`}
                className="h-full w-full object-cover"
              />
            </motion.div>
          );
        })}

        {/* 文件夹正面（悬停时变平） */}
        <motion.div
          className="absolute inset-x-0 bottom-0 h-[85%] origin-bottom rounded-[4px] bg-gradient-to-b from-amber-300 to-amber-400 shadow-sm dark:from-amber-400 dark:to-amber-500"
          animate={{
            rotateX: isHovered ? -45 : -25,
            scaleY: isHovered ? 0.8 : 1,
          }}
          transition={{
            type: "spring",
            stiffness: 400,
            damping: 25,
          }}
          style={{
            transformStyle: "preserve-3d",
            zIndex: 20,
          }}
        >
          {/* 文件夹线条细节 */}
          <div className="absolute top-1 right-1 left-1 h-px bg-amber-200/50 dark:bg-amber-300/50" />
        </motion.div>
      </motion.div>

      {/* 文本 */}
      <span className="text-sm font-medium text-neutral-700 dark:text-neutral-200">
        {text}
      </span>
    </Component>
  );
}