/**
 * Base Gateway abstract class
 *
 * Extracts common logic shared across Discord, Slack, and Telegram gateways.
 * Platform-specific behavior is implemented via abstract methods and properties.
 */
import type { Gateway, GatewayEvent, GatewayEventHandler, GatewayConfig, MessageSource } from './types.js';
import type { SessionDirectory, TurnProcessor } from './turn-contract.js';
export interface BaseGatewayOptions {
    /**
     * How a turn is processed. Required, because this is what a user-facing surface
     * actually needs; the concrete router is an extra capability, not the dependency.
     */
    turnProcessor: TurnProcessor;
    /**
     * Optional, and narrow. Only surfaces that read session data for their own display
     * concerns - naming a channel, listing what is active - ask for this. It is not a
     * router: a surface that serves turns cannot reach past the contract through it.
     */
    sessionDirectory?: SessionDirectory;
    config?: Partial<GatewayConfig>;
}
export declare abstract class BaseGateway implements Gateway {
    abstract readonly source: MessageSource;
    protected sessionDirectory?: SessionDirectory;
    /**
     * The turn seam, shared by every user-facing surface.
     *
     * Telegram, Discord and Slack are ONE role - the place a person reaches the agent - so
     * the boundary belongs here rather than to any one of them. Connectors are not turn
     * sources at all; they are data the agent reads, and they never pass through here.
     *
     * Required: a surface that serves turns needs this and nothing else.
     */
    protected turnProcessor: TurnProcessor;
    protected eventHandlers: GatewayEventHandler[];
    protected connected: boolean;
    constructor(options: BaseGatewayOptions);
    abstract start(): Promise<void>;
    abstract stop(): Promise<void>;
    abstract sendMessage(channelId: string, text: string): Promise<void>;
    abstract sendFile(channelId: string, filePath: string, caption?: string): Promise<void>;
    /** Regex to strip bot mentions from message text. null = no stripping. */
    protected abstract get mentionPattern(): RegExp | null;
    isConnected(): boolean;
    onEvent(handler: GatewayEventHandler): void;
    protected emitEvent(event: GatewayEvent): void;
    protected cleanMessageContent(content: string): string;
}
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