/**
 * Gmail API Service for Browser Use
 * Handles Gmail API authentication, email reading, and 2FA code extraction.
 * This service provides a clean interface for agents to interact with Gmail.
 */
import type { gmail_v1 } from 'googleapis';
export interface EmailData {
    id: string;
    threadId: string;
    subject: string;
    from: string;
    to: string;
    date: string;
    timestamp: number;
    body: string;
    rawMessage: gmail_v1.Schema$Message;
}
export declare class GmailService {
    /**
     * Gmail API scopes for reading emails
     */
    private static readonly SCOPES;
    private credentialsFile;
    private tokenFile;
    private configDir;
    private accessToken?;
    private service?;
    private oauth2Client?;
    private authenticated;
    constructor(options?: {
        credentialsFile?: string;
        tokenFile?: string;
        configDir?: string;
        accessToken?: string;
    });
    /**
     * Check if Gmail service is authenticated
     */
    isAuthenticated(): boolean;
    /**
     * Handle OAuth authentication and token management
     */
    authenticate(): Promise<boolean>;
    /**
     * Get recent emails with optional query filter
     */
    getRecentEmails(options?: {
        maxResults?: number;
        query?: string;
        timeFilter?: string;
    }): Promise<EmailData[]>;
    /**
     * Parse Gmail message into readable format
     */
    private parseEmail;
    /**
     * Extract email body from payload
     */
    private extractBody;
}
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