import {
  forwardRef,
  type HTMLAttributes,
  type ImgHTMLAttributes,
  type ReactNode,
} from 'react';

import { ResolvedAssetImage } from '../ResolvedAssetImage';

type PlatformMediaFrameAspect =
  | 'auto'
  | 'square'
  | 'standard'
  | 'landscape'
  | 'wide'
  | 'portrait'
  | 'video';
type PlatformMediaFrameSurface =
  | 'warm'
  | 'editorDark'
  | 'plain'
  | 'soft'
  | 'bright'
  | 'none'
  | 'bare';

type PlatformMediaFrameProps = Omit<
  HTMLAttributes<HTMLDivElement>,
  'children' | 'className'
> & {
  src?: string | null;
  fallbackSrc?: string | null;
  alt: string;
  fallbackLabel: string;
  aspect?: PlatformMediaFrameAspect;
  surface?: PlatformMediaFrameSurface;
  loading?: 'eager' | 'lazy';
  refreshKey?: string | number | null;
  imageClassName?: string;
  imageProps?: Omit<
    ImgHTMLAttributes<HTMLImageElement>,
    'alt' | 'className' | 'loading' | 'src'
  >;
  className?: string;
  fallbackClassName?: string;
  fallbackShellClassName?: string;
  fallbackContent?: ReactNode;
  children?: ReactNode;
  previewOverlay?: ReactNode;
  overlayInteractive?: boolean;
};

const PLATFORM_MEDIA_FRAME_ASPECT_CLASS: Record<
  PlatformMediaFrameAspect,
  string
> = {
  auto: '',
  square: 'aspect-square',
  standard: 'aspect-[4/3]',
  landscape: 'aspect-[16/9]',
  wide: 'aspect-[9/5]',
  portrait: 'aspect-[9/16]',
  video: 'aspect-video',
};

const PLATFORM_MEDIA_FRAME_SURFACE_CLASS: Record<
  PlatformMediaFrameSurface,
  string
> = {
  warm: 'border border-[var(--platform-subpanel-border)] bg-[radial-gradient(circle_at_top,rgba(255,255,255,0.22),transparent_42%),linear-gradient(180deg,rgba(204,117,76,0.9),rgba(223,127,64,0.82))]',
  editorDark:
    'border border-white/10 bg-[radial-gradient(circle_at_top,rgba(56,189,248,0.16),transparent_48%),linear-gradient(180deg,rgba(19,24,39,0.95),rgba(8,10,17,0.92))]',
  plain:
    'border border-[var(--platform-subpanel-border)] bg-[var(--platform-subpanel-fill)]',
  soft: 'border border-[var(--platform-subpanel-border)] bg-white/68',
  bright: 'border border-[var(--platform-subpanel-border)] bg-white/82',
  none: '',
  bare: 'bg-[var(--platform-subpanel-fill)]',
};

/**
 * 平台媒体预览框。
 * 统一承接图片预览、固定比例、fallback 文案和可选 overlay。
 */
export const PlatformMediaFrame = forwardRef<
  HTMLDivElement,
  PlatformMediaFrameProps
>(function PlatformMediaFrame(
  {
    src,
    fallbackSrc,
    alt,
    fallbackLabel,
    aspect = 'square',
    surface = 'warm',
    loading,
    refreshKey,
    imageClassName = 'h-full w-full object-cover',
    imageProps,
    className,
    fallbackClassName,
    fallbackShellClassName,
    fallbackContent,
    children,
    previewOverlay,
    overlayInteractive = false,
    ...containerProps
  },
  ref,
) {
  const imageSrc = src?.trim() || fallbackSrc?.trim() || '';
  const hasOverlay = Boolean(children) || Boolean(previewOverlay);

  return (
    <div
      {...containerProps}
      ref={ref}
      className={[
        'platform-media-frame relative overflow-hidden rounded-2xl',
        PLATFORM_MEDIA_FRAME_SURFACE_CLASS[surface],
        PLATFORM_MEDIA_FRAME_ASPECT_CLASS[aspect],
        className,
      ]
        .filter(Boolean)
        .join(' ')}
    >
      {imageSrc ? (
        <ResolvedAssetImage
          {...imageProps}
          src={src?.trim() || undefined}
          fallbackSrc={fallbackSrc?.trim() || undefined}
          alt={alt}
          loading={loading}
          refreshKey={refreshKey}
          className={imageClassName}
        />
      ) : (
        <div
          className={[
            'flex h-full w-full items-center justify-center px-4 text-center text-sm font-semibold tracking-[0.18em] text-zinc-400',
            fallbackShellClassName,
            fallbackClassName,
          ]
            .filter(Boolean)
            .join(' ')}
        >
          {fallbackContent ?? fallbackLabel}
        </div>
      )}
      {hasOverlay ? (
        <div
          className={[
            overlayInteractive ? 'pointer-events-auto' : 'pointer-events-none',
            'absolute inset-0',
          ].join(' ')}
        >
          {previewOverlay}
          {children}
        </div>
      ) : null}
    </div>
  );
});