import { Message } from '../types';
export interface SendMessagePayload {
    conversationId: string;
    conversation: {
        id: string;
        senderId: string;
        createdAt: string;
        chatbotActivated: boolean;
        updatedAt: string;
        source: string;
        website: string;
        messages: any[];
    };
    chatbotUid: string;
}
/**
 * Creates a fallback bot message for error scenarios
 * @returns Fallback bot message
 */
export declare const createFallbackMessage: () => Message;
/**
 * Builds the payload for sending messages to the API
 * @param conversationId Conversation ID
 * @param messages Array of messages
 * @param config Chat configuration
 * @param sessionId User's session identifier
 * @returns API payload
 */
export declare const buildMessagePayload: (conversationId: string, messages: Message[], config: {
    apiKey: string;
}, sessionId: string) => SendMessagePayload;
/**
 * Sends messages to the chat API
 * @param payload Message payload
 * @returns Promise that resolves to API response or null if failed
 */
export declare const sendMessageToAPI: (payload: SendMessagePayload) => Promise<any>;
/**
 * Creates a bot message from API response
 * @param responseData API response data
 * @returns Bot message or null if no content
 */
export declare const createBotMessageFromResponse: (responseData: any) => Message | null;