import type { Output } from '../output.js';
/** api-server's gallery video cap (`POST_MEDIA_VIDEO_MAX_BYTES`), checked here before any request. */
export declare const MAX_TRAILER_BYTES: number;
export interface TrailerPublishDeps {
    fetch: typeof globalThis.fetch;
    sleep: (ms: number) => Promise<void>;
    /** Injected where the record is stamped; production omits it. */
    now?: () => number;
    /** Test-only override; production omits it and the auth store reads ~/.bitmagic. */
    baseDir?: string;
}
export interface TrailerPublishOptions {
    /** The project root (`loadProjectContext().root`). */
    root: string;
    /** The video to upload; relative paths resolve against the current directory. */
    file: string;
    /** Add it to the game page gallery after the upload. */
    attach: boolean;
    output: Output;
    deps?: TrailerPublishDeps;
}
export interface TrailerPublishResult {
    publicUrl: string;
    bytes: number;
    contentType: string;
    attached: boolean;
    pageUrl?: string;
    published?: boolean;
    isPublic?: boolean;
    /** The previous trailer this one replaced in the gallery, when there was one. */
    replacedUrl?: string;
}
/**
 * Does the file start the way its extension promises? An MP4 (and every ISO-BMFF sibling: .m4v,
 * .mov) carries `ftyp` at byte 4; a WebM is an EBML document and starts `1A 45 DF A3`. A file that
 * fails this was renamed, or is not finished being written — either way the bucket must not get it.
 */
export declare function looksLikeVideo(bytes: Uint8Array, contentType: string): boolean;
/** The file's bytes and content type, or the refusal — nothing here touches the network. */
export declare function readTrailerFile(file: string): {
    bytes: Uint8Array;
    contentType: string;
    resolved: string;
};
export declare function runTrailerPublish(options: TrailerPublishOptions): Promise<TrailerPublishResult>;