/**
 * DriveConnector — polls Google Drive changes via the gws CLI tool.
 * Uses short synchronous gws checks during setup and asynchronous calls while polling.
 * Emits file_change NormalizedItems for files modified in configured folders.
 */
import type { AuthRequirement, ConnectorConfig, ConnectorHealth, IConnector, NormalizedItem } from '../framework/types.js';
export declare class DriveConnector implements IConnector {
    readonly name = "drive";
    readonly type: "api";
    private config;
    private lastPollTime;
    private lastPollCount;
    private lastError;
    /** Stored page tokens per poll session (single global token for Drive changes API) */
    private pageTokens;
    private readonly stateFilePath;
    constructor(config: ConnectorConfig);
    init(): Promise<void>;
    private loadState;
    private saveState;
    dispose(): Promise<void>;
    healthCheck(): Promise<ConnectorHealth>;
    getAuthRequirements(): AuthRequirement[];
    authenticate(): Promise<boolean>;
    /**
     * Find which channel config matches based on a file's parent folder IDs.
     * Returns [channelKey, channelName] or null if no match.
     */
    private findChannelByParent;
    /**
     * Get shared drive IDs from channel configs.
     * Channels with a driveId property are treated as shared drive sources.
     */
    private getSharedDriveIds;
    /**
     * Poll changes from a single drive (personal or shared).
     * Returns items and updates the page token.
     */
    private pollDrive;
    poll(_since: Date): Promise<NormalizedItem[]>;
}
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