import { memo, useCallback, useEffect, useRef, useState, type ReactNode } from "react";import { createPortal } from "react-dom";import { ChevronLeftIcon, ChevronRightIcon, XIcon } from "lucide-react";import { Button } from "../ui/button";import type { ExpandedImageItem, ExpandedImagePreview } from "./ExpandedImagePreview";import { resolveExternalWebLinkHost } from "./externalLinkContextMenu";import { useAssetUrlRefresh, useAssetUrlState } from "../../assets/assetUrls";import { OpenMediaLink } from "../media/OpenMediaLink";import { MediaActions, type MediaActionSource } from "../media/MediaActions";import { MediaVideoPlayer } from "../media/MediaVideoPlayer";import { isContextMenuOpen } from "../../contextMenuFallback";import { composerFloatingLayerProps } from "./composerEventScope"; interface ExpandedImageDialogProps {  preview: ExpandedImagePreview;  onClose: () => void;} const EXPANDED_MEDIA_STATE_CLASS_NAME =  "flex aspect-auto h-48 min-h-0 w-[min(92vw,32rem)] flex-col items-center justify-center gap-3 rounded-lg border border-border/70 bg-black p-6 text-center text-sm text-white shadow-2xl"; function ExpandedMediaFailure({ children }: { children: ReactNode }) {  return (    <div role="alert" className={EXPANDED_MEDIA_STATE_CLASS_NAME}>      {children}    </div>  );} function ExpandedVideo({ item }: { readonly item: ExpandedImageItem }) {  const asset = item.actionsSource?.asset;  const assetUrl = useAssetUrlState(asset?.environmentId ?? null, asset?.resource ?? null);  const refreshAssetUrl = useAssetUrlRefresh(asset?.environmentId ?? null, asset?.resource ?? null);  const src = asset    ? assetUrl._tag === "Success"      ? assetUrl.url + (item.srcFragment ?? "")      : null    : item.src;  return (    <MediaVideoPlayer      src={src}      label={item.name}      sourceFailed={assetUrl._tag === "Failure"}      originalUrl={item.originalUrl}      preload="metadata"      autoPlay={item.autoPlay ?? true}      className="block max-h-[86vh] max-w-[92vw] text-center"      videoClassName="aspect-auto max-h-[86vh] w-auto max-w-[92vw] rounded-lg border border-border/70 shadow-2xl"      stateClassName={EXPANDED_MEDIA_STATE_CLASS_NAME}      onRetry={asset ? refreshAssetUrl : undefined}    />  );} export const ExpandedImageDialog = memo(function ExpandedImageDialog({  preview,  onClose,}: ExpandedImageDialogProps) {  const [imageOffset, setImageOffset] = useState(0);  const [failedImageSrc, setFailedImageSrc] = useState<string | null>(null);  const index = (preview.index + imageOffset + preview.images.length) % preview.images.length;  const item = preview.images[index];  const source: MediaActionSource = item?.actionsSource ?? {    kind: item?.type === "video" ? "video" : "image",    name: item?.name ?? "Media",    src: item?.src ?? null,  };  const openFile = source.onOpenFile;  const actionsSource: MediaActionSource = openFile    ? {        ...source,        onOpenFile: () => {          openFile();          onClose();        },      }    : source;   const navigateImage = useCallback((direction: -1 | 1) => {    setImageOffset((current) => current + direction);  }, []);   // The element that opened the preview gets focus back on close. Without  // this a close button click leaves focus on the unmounted dialog, and the  // composer that owned the opener reads that as a blur and rests.  const openerRef = useRef<Element | null>(null);  useEffect(() => {    openerRef.current = document.activeElement;    return () => {      const opener = openerRef.current;      if (opener instanceof HTMLElement && opener.isConnected) {        opener.focus({ preventScroll: true });      }    };  }, []);   useEffect(() => {    const onKeyDown = (event: globalThis.KeyboardEvent) => {      if (event.defaultPrevented || isContextMenuOpen()) {        return;      }      if (event.key === "Escape") {        event.preventDefault();        event.stopPropagation();        onClose();        return;      }      if (preview.images.length <= 1) return;      if (event.key === "ArrowLeft") {        event.preventDefault();        event.stopPropagation();        navigateImage(-1);        return;      }      if (event.key !== "ArrowRight") return;      event.preventDefault();      event.stopPropagation();      navigateImage(1);    };    window.addEventListener("keydown", onKeyDown);    return () => window.removeEventListener("keydown", onKeyDown);  }, [navigateImage, onClose, preview.images.length]);   if (!item) return null;  const mediaLabel = item.type === "video" ? "video" : "image";  const openOriginalLink =    item.originalUrl && resolveExternalWebLinkHost(item.originalUrl) !== null ? (      <OpenMediaLink originalUrl={item.originalUrl} />    ) : null;   return createPortal(    <div      {...composerFloatingLayerProps}      className="fixed inset-0 z-[60] flex items-center justify-center bg-black/75 px-4 py-6 [-webkit-app-region:no-drag]"      role="dialog"      aria-modal="true"      aria-label={`Expanded ${mediaLabel} preview`}    >      <button        type="button"        className="absolute inset-0 z-0 cursor-zoom-out"        aria-label={`Close ${mediaLabel} preview`}        onClick={onClose}      />      {preview.images.length > 1 && (        <Button          type="button"          size="icon"          variant="ghost"          className="absolute left-2 top-1/2 z-20 -translate-y-1/2 text-white/90 hover:bg-white/10 hover:text-white sm:left-6"          aria-label="Previous image"          onClick={() => navigateImage(-1)}        >          <ChevronLeftIcon className="size-5" />        </Button>      )}      <MediaActions source={actionsSource}>        <div className="relative isolate z-10 max-h-[92vh] max-w-[92vw]">          <Button            type="button"            size="icon-xs"            variant="ghost"            className="absolute right-2 top-2 z-20"            onClick={onClose}            aria-label={`Close ${mediaLabel} preview`}          >            <XIcon />          </Button>          {item.type === "video" ? (            <ExpandedVideo key={index} item={item} />          ) : item.src === null || failedImageSrc === item.src ? (            <ExpandedMediaFailure>              <p>                {openOriginalLink                  ? "This image could not be loaded."                  : "Image unavailable. The file may have been moved or deleted."}              </p>              {openOriginalLink}            </ExpandedMediaFailure>          ) : (            <img              src={item.src}              alt={item.name}              className="max-h-[86vh] max-w-[92vw] select-none rounded-lg border border-border/70 bg-background object-contain shadow-2xl"              draggable={false}              onError={() => setFailedImageSrc(item.src)}            />          )}          <p className="mt-2 max-w-[92vw] truncate text-center text-xs text-muted-foreground/80">            {item.name}            {preview.images.length > 1 ? ` (${index + 1}/${preview.images.length})` : ""}          </p>        </div>      </MediaActions>      {preview.images.length > 1 && (        <Button          type="button"          size="icon"          variant="ghost"          className="absolute right-2 top-1/2 z-20 -translate-y-1/2 text-white/90 hover:bg-white/10 hover:text-white sm:right-6"          aria-label="Next image"          onClick={() => navigateImage(1)}        >          <ChevronRightIcon className="size-5" />        </Button>      )}    </div>,    document.body,  );});