/**
 * Audio Manager
 *
 * Manages audio overview generation in NotebookLM notebooks.
 * Audio overviews are AI-generated podcast-style summaries of notebook content.
 */
import { StudioManagerBase } from "./studio-manager-base.js";
export interface AudioStatus {
    status: "not_started" | "generating" | "ready" | "failed" | "unknown";
    progress?: number;
    duration?: number;
    estimatedTimeRemaining?: number;
}
export interface GenerateAudioResult {
    success: boolean;
    status: AudioStatus;
    error?: string;
}
export interface DownloadAudioResult {
    success: boolean;
    filePath?: string;
    size?: number;
    error?: string;
}
export declare class AudioManager extends StudioManagerBase {
    protected readonly logName = "audio-manager";
    protected readonly navigateDelay: {
        min: number;
        max: number;
    };
    /**
     * Generate an audio overview for a notebook
     */
    generateAudioOverview(notebookUrl: string): Promise<GenerateAudioResult>;
    /**
     * Check the current audio status for a notebook
     */
    getAudioStatus(notebookUrl: string): Promise<AudioStatus>;
    /**
     * Internal: Check audio status on current page
     */
    private checkAudioStatusInternal;
    /**
     * Download the generated audio file
     */
    downloadAudio(notebookUrl: string, outputPath?: string): Promise<DownloadAudioResult>;
}