import { type Dispatch, type SetStateAction } from 'react';
import type { Message } from './message';
export type { Message };
/**
 * Use chat
 * @param {object} body - The body of the chat.
 * @param {function} onError - The function to call when an error occurs.
 * @param {function} onFinish - The function to call when the chat is finished.
 * @returns {UseChatReturn} The chat.
 */
export type UseChatProps = {
    body?: object;
    onError?: (e: unknown) => void;
    onFinish?: (message: Message) => void;
    /** 消息分页大小，不传时不分页 */
    pageSize?: number;
};
/**
 * Use chat return
 * @param {Message[]} messages - 消息列表
 * @param {string} status - 状态
 * @param {Error} error - 错误
 * @param {function} append - 添加消息
 * @param {function} regenerate - 重新生成最后一条回答
 * @param {function} continueGenerate - 让AI继续说
 * @param {function} stop - 停止对话
 * @param {function} setMessages - 设置消息
 * @param {function} input - 用户输入
 * @param {function} setInput - 设置输入
 * @param {function} handleSubmit - 提交用户输入，让AI回答
 * @param {function} setSwipe - 设置Swipe
 * @param {function} editMessage - 编辑消息
 * @param {function} deleteMessage - 删除消息
 * @param {function} loadMoreMessage - 加载更多消息
 * @param {string} messagesStatus - 消息状态
 */
export type UseChatReturn = {
    messages: Message[];
    status: 'uninitialized' | 'ready' | 'streaming' | 'error';
    error?: unknown;
    /** 提交用户输入，让AI回答 */
    append: (query: string) => Promise<void>;
    /** 重新生成最后一条回答 */
    regenerate: () => Promise<void>;
    /** 让AI继续说 */
    continueGenerate: () => Promise<void>;
    stop: () => void;
    setMessages: Dispatch<SetStateAction<Message[]>>;
    input: string;
    setInput: Dispatch<SetStateAction<string>>;
    handleSubmit: () => void;
    setSwipe: (messageId: string, swipeId: number) => Promise<void>;
    editMessage: (messageId: string, content: string) => Promise<void>;
    deleteMessage: (messageId: string) => Promise<void>;
    loadMoreMessage: () => Promise<void>;
    messagesStatus: 'all-loaded' | 'loading' | 'has-more' | 'error';
};
/**
 * Use chat common
 * @param {object} body - The body of the chat.
 * @returns {UseChatCommon} The chat.
 */
export type UseChatCommon = {
    body?: object;
};
/**
 * Use chat
 * @param {UseChatProps} props - The props of the chat.
 * @param {object} props.body - The body of the chat.
 * @param {function} props.onError - The function to call when an error occurs.
 * @param {function} props.onFinish - The function to call when the chat is finished.
 * @param {number} props.pageSize - The page size of the chat.
 * @returns {UseChatReturn} The chat.
 * @example
 * const { messages, status, error, append, regenerate, continueGenerate, stop, setMessages, input, setInput, handleSubmit, setSwipe, editMessage, deleteMessage, loadMoreMessage, messagesStatus } = useChat({
 *   body: {
 *     model: 'gpt-4o-mini',
 *   },
 * });
 */
export declare const useChat: ({ body, onError, onFinish, pageSize, }: UseChatProps) => UseChatReturn;