import type { AssetResource, ChatFileAttachment, EnvironmentId } from "@t3tools/contracts"; 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: "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]      : [          "media-video",          source.environmentId,          source.resource.threadId,          source.resource.path,          source.srcFragment ?? "",        ],  );} export type AttachmentVideoPreviewSource = (  | { readonly type: "local"; readonly attachment: DraftComposerFileAttachment }  | {      readonly type: "remote";      readonly environmentId: EnvironmentId;      readonly attachment: ChatFileAttachment;    }) & { readonly sourceIdentifier?: string }; export type VideoPreviewSource = AttachmentVideoPreviewSource | MediaVideoPreviewSource;