import type { ChatMessage, ChatSession } from '../types';
export declare function useChatOperations(sessionId?: string): {
    chatSessions: ChatSession[];
    currentSession: ChatSession | null;
    messages: ChatMessage[];
    sessionsLoading: boolean;
    sessionLoading: boolean;
    startingChat: boolean;
    sendingMessage: boolean;
    endingChat: boolean;
    chatSession: import("../store/supportStore").ChatSessionState;
    initiateChatSession: (input: {
        name?: string;
        email?: string;
        subject?: string;
    }) => Promise<ChatSession | undefined>;
    sendMessage: (content: string, attachments?: File[]) => Promise<ChatMessage | undefined>;
    terminateChatSession: (_feedback?: {
        rating?: number;
        comment?: string;
    }) => Promise<void>;
    refetchSessions: () => Promise<void>;
    refetchSession: () => Promise<void>;
    minimizeChat: () => void;
    maximizeChat: () => void;
    setAgentTyping: (typing: boolean) => void;
};