import type { AIMessage, AIMessageContent, ChatMessagesData, ChatMessageSetterMode, ChatMessageStore, UserMessage } from '../type';
import ReactiveState from './reactiveState';
export declare class MessageStore extends ReactiveState<ChatMessageStore> {
    initialize(initialState?: Partial<ChatMessageStore>): void;
    createMessage(message: ChatMessagesData): void;
    createMultiMessages(messages: ChatMessagesData[]): void;
    setMessages(messages: ChatMessagesData[], mode?: ChatMessageSetterMode): void;
    appendContent(messageId: string, processedContent: AIMessageContent, targetIndex?: number): void;
    replaceContent(messageId: string, processedContent: AIMessageContent[]): void;
    setMessageStatus(messageId: string, status: ChatMessagesData['status']): void;
    setMessageExt(messageId: string, attr?: {}): void;
    clearHistory(): void;
    removeMessage(messageId: string): void;
    createMessageBranch(messageId: string): void;
    get messages(): ChatMessagesData[];
    getMessageByID(id: string): ChatMessagesData;
    get currentMessage(): ChatMessagesData;
    get lastAIMessage(): AIMessage | undefined;
    get lastUserMessage(): UserMessage | undefined;
    private updateMessageStatusByContent;
    /**
     * 更新多个内容块
     * @param messageId 消息ID
     * @param contents 要更新的内容块数组
     */
    updateMultipleContents(messageId: string, contents: AIMessageContent[]): void;
}