"use client"
import { X } from "lucide-react"

/**
 * 视觉类节点统一大预览：
 * - **在 ReactFlow 节点 DOM 内**作为 absolute 元素，贴 thumb 上方边缘（bottom: calc(100% + 10px) + 居中）
 * - 跟随 ReactFlow 画布 pan/zoom 一起变化（属于"无限画布"的一部分）
 * - 媒体按"自然像素分辨率"渲染 + max-w/max-h 限制，避免占满整个画布
 * - 不 pinned 时：pointer-events-none，依赖 group-hover 显示/隐藏
 * - pinned=true：强制 visible，pointer-events 开启，可点 × 关闭
 * - 用法：父级容器要带 `group` class，HoverPreview 直接作为子元素
 */
interface Props {
  imgSrc?: string
  videoSrc?: string
  poster?: string
  aspect: string
  label?: string
  caption?: string
  borderClass?: string
  pinned?: boolean
  onClose?: () => void
}

export function HoverPreview({
  imgSrc, videoSrc, poster, aspect,
  label, caption,
  borderClass = "border-violet-300/55",
  pinned = false,
  onClose,
}: Props) {
  const visibilityCls = pinned
    ? "opacity-100 scale-100 pointer-events-auto"
    : "pointer-events-none opacity-0 group-hover:opacity-100 scale-95 group-hover:scale-100"
  return (
    <div
      className={`absolute transition-all duration-150 z-[60] ${visibilityCls}`}
      style={{
        bottom: "calc(100% + 10px)",
        left: "50%",
        transform: "translateX(-50%)",
        transformOrigin: "bottom center",
      }}
    >
      <div className={`relative rounded-lg overflow-hidden border-2 bg-black shadow-2xl ${pinned ? "ring-2 ring-violet-400/70" : ""} ${borderClass}`}
        style={{ width: "max-content" }}>
        {videoSrc ? (
          <video
            src={videoSrc}
            poster={poster}
            muted
            loop
            playsInline
            autoPlay
            preload="auto"
            className="block"
            style={{ maxWidth: "none" }}
            onLoadedMetadata={(e) => { e.currentTarget.play().catch(() => {}) }}
            onCanPlay={(e) => { e.currentTarget.play().catch(() => {}) }}
          />
        ) : imgSrc ? (
          <img src={imgSrc} alt="" className="block" style={{ maxWidth: "none" }} />
        ) : (
          <div className="w-40 h-40 bg-black/40" />
        )}
        {(label || caption) && (
          <div className="px-2 py-1 bg-black/80 text-white text-[11px] flex items-center justify-between">
            {label && <span>{label}</span>}
            {caption && <span className="text-white/60 font-mono">{caption}</span>}
          </div>
        )}
        {pinned && onClose && (
          <button
            type="button"
            onClick={(e) => { e.stopPropagation(); onClose() }}
            onMouseDown={(e) => e.stopPropagation()}
            title="取消固定预览"
            className="absolute right-1 top-1 h-7 w-7 rounded-full bg-black/75 text-white shadow-lg hover:bg-rose-500 inline-flex items-center justify-center z-10"
          >
            <X className="h-4 w-4" />
          </button>
        )}
      </div>
    </div>
  )
}