import { forwardRef, useMemo } from "react";
import MemoContent from "@/components/MemoContent";
import UserAvatar from "@/components/UserAvatar";
import i18n from "@/i18n";
import { cn } from "@/lib/utils";
import { useTranslate } from "@/utils/i18n";
import { useMemoViewContext } from "../MemoView/MemoViewContext";
import { buildMemoShareImagePreviewModel } from "./memoShareImagePreviewModel";

const MemoShareImagePreview = forwardRef<HTMLDivElement, { width: number }>(({ width }, ref) => {
  const t = useTranslate();
  const { memo, creator, blurred, showBlurredContent } = useMemoViewContext();
  const fallbackDisplayName = t("common.memo");
  const locale = i18n.language;

  const preview = useMemo(
    () =>
      buildMemoShareImagePreviewModel({
        memo,
        creator,
        fallbackDisplayName,
        locale,
      }),
    [creator, fallbackDisplayName, locale, memo],
  );

  return (
    <div ref={ref} className="overflow-hidden rounded-xl border border-border/50 bg-background p-2 sm:p-2.5" style={{ width }}>
      <div className="overflow-hidden rounded-lg border border-border/60 bg-background p-4 sm:p-5">
        <div className="flex items-start gap-3">
          <div className="flex min-w-0 items-center gap-2.5">
            <UserAvatar avatarUrl={preview.avatarUrl} className="h-8 w-8 rounded-xl" />
            <div className="min-w-0">
              <div className="truncate text-[13px] font-semibold text-foreground">{preview.displayName}</div>
              {preview.formattedDisplayTime && <div className="truncate text-xs text-muted-foreground">{preview.formattedDisplayTime}</div>}
            </div>
          </div>
        </div>

        <div className="mt-4">
          <div className={cn("pointer-events-none", blurred && !showBlurredContent && "blur-lg")}>
            <MemoContent content={memo.content} compact={false} contentClassName="text-[14px] leading-6.5 sm:text-[15px]" />
          </div>
        </div>

        {preview.visualItems.length > 0 && (
          <div className={cn("mt-4 grid gap-1.5", preview.visualItems.length === 1 ? "grid-cols-1" : "grid-cols-2")}>
            {preview.visualItems.slice(0, 4).map((item, index) => (
              <div
                key={item.id}
                className={cn(
                  "relative overflow-hidden rounded-md border border-border/70 bg-muted/30",
                  preview.visualItems.length === 1 ? "aspect-[4/3]" : "aspect-square",
                  preview.visualItems.length === 3 && index === 0 && "col-span-2 aspect-[2.2/1]",
                )}
              >
                <img src={item.posterUrl} alt={item.filename} className="h-full w-full object-cover" loading="eager" decoding="async" />
                {index === 3 && preview.visualItems.length > 4 && (
                  <div className="absolute inset-0 flex items-center justify-center bg-foreground/35 text-lg font-semibold text-background">
                    +{preview.visualItems.length - 4}
                  </div>
                )}
              </div>
            ))}
          </div>
        )}

        {preview.footerBadges.length > 0 && (
          <div className="mt-4 flex flex-wrap items-center gap-1.5">
            {preview.footerBadges.map((badge) => (
              <span
                key={badge.type}
                className="inline-flex rounded-full border border-border/70 bg-muted/55 px-2 py-0.5 text-[11px] text-muted-foreground"
              >
                {badge.count} {t("common.attachments").toLowerCase()}
              </span>
            ))}
          </div>
        )}
      </div>
    </div>
  );
});

MemoShareImagePreview.displayName = "MemoShareImagePreview";

export default MemoShareImagePreview;