import OpenAI from "openai";
import { Message } from "@green-api/whatsapp-chatbot-js-v2";
import { OpenAIModel } from "../types";
/**
 * Base handler interface for processing different message types
 */
export interface MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message, openai: OpenAI, model?: string): Promise<any>;
}
/**
 * Handles text messages
 */
export declare class TextMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles image messages
 */
export declare class ImageMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message, _: OpenAI, model: OpenAIModel): Promise<any>;
}
/**
 * Handles video messages
 */
export declare class VideoMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles audio messages
 */
export declare class AudioMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message, openai: OpenAI): Promise<any>;
    private downloadMedia;
    private transcribeAudio;
}
/**
 * Handles document messages
 */
export declare class DocumentMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles poll messages
 */
export declare class PollMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles poll update messages
 */
export declare class PollUpdateMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles location messages
 */
export declare class LocationMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Handles contact messages
 */
export declare class ContactMessageHandler implements MessageHandler {
    canHandle(message: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Fallback handler for unsupported message types
 */
export declare class FallbackMessageHandler implements MessageHandler {
    canHandle(_: Message): boolean;
    processMessage(message: Message): Promise<any>;
}
/**
 * Message handler registry that processes WhatsApp messages for OpenAI
 */
export declare class MessageHandlerRegistry {
    private handlers;
    private readonly openai;
    private readonly model;
    constructor(openai: OpenAI, model: OpenAIModel);
    private registerDefaultHandlers;
    /**
     * Replace a handler of a specific type with a new handler
     * @param handlerType The constructor of the handler type to replace
     * @param newHandler The new handler to use instead
     * @returns true if a handler was replaced, false otherwise
     */
    replaceHandler(handlerType: new (...args: any[]) => MessageHandler, newHandler: MessageHandler): boolean;
    /**
     * Register a custom message handler
     * @param handler The handler to register
     * @param index Optional position to insert the handler (default: before fallback)
     */
    registerHandler(handler: MessageHandler, index?: number): void;
    /**
     * Process a message using the appropriate handler
     */
    processMessage(message: Message): Promise<any>;
}