import type { AssetResource, ChatFileAttachment, EnvironmentId } from "@t3tools/contracts";import { videoMimeType } from "@t3tools/shared/video"; import type { DraftComposerFileAttachment } from "./composerImages";import type { MediaActionsSource } from "./mediaActions"; export type MediaVideoPreviewSource = {  readonly type: "media";  readonly name: string;  readonly mimeType: string;  readonly sourceIdentifier?: string;  readonly srcFragment?: string;  readonly actionsSource?: MediaActionsSource;} & (  | { readonly uri: string }  | {      readonly environmentId: EnvironmentId;      readonly resource: Extract<AssetResource, { readonly _tag: "attachment" | "media-file" }>;    }); /** Resolves the current capability without making it the identity of the video. */export function mediaVideoPreviewUri(  source: MediaVideoPreviewSource,  assetUrl: string | null,): string | null {  if ("uri" in source) return source.uri;  return assetUrl === null ? null : assetUrl + (source.srcFragment ?? "");} /** Keeps thumbnails independent of refreshed asset signatures and scoped to their environment. */export function mediaVideoThumbnailKey(source: MediaVideoPreviewSource): string {  return JSON.stringify(    "uri" in source      ? ["media-video", source.uri]      : source.resource._tag === "attachment"        ? ["media-video", source.environmentId, "attachment", source.resource.attachmentId]        : [            "media-video",            source.environmentId,            source.resource.threadId,            source.resource.path,            source.srcFragment ?? "",          ],  );} export interface LocalVideoPreviewSource {  readonly type: "local";  readonly attachment: DraftComposerFileAttachment;  readonly sourceIdentifier?: string;} export type VideoPreviewSource = LocalVideoPreviewSource | MediaVideoPreviewSource; export function attachmentVideoPreviewSource(  environmentId: EnvironmentId,  attachment: ChatFileAttachment,  sourceIdentifier?: string,): MediaVideoPreviewSource {  const mimeType = videoMimeType(attachment) ?? attachment.mimeType;  const resource = {    _tag: "attachment" as const,    attachmentId: attachment.id,    fileName: attachment.name,    mimeType,  };  return {    type: "media",    name: attachment.name,    mimeType,    ...(sourceIdentifier ? { sourceIdentifier } : {}),    environmentId,    resource,    actionsSource: {      name: attachment.name,      mimeType,      ...(sourceIdentifier ? { sourceIdentifier } : {}),      environmentId,      resource,    },  };}