import { ApiConfig, SuggestedQuestion, EventAction, ParaSource, ChatMessage } from '../types/index.js';
import 'react';

/**
 * 移动端聊天服务层
 * 基于 @icos-react/largemodel 的 apiService + messageService 适配
 * 纯浏览器 API，无第三方依赖
 */

declare function getAuthToken(): string | null;
declare function sendChatRequest(config: ApiConfig, message: string, sessionId?: string, signal?: AbortSignal): Promise<Response>;
declare function fetchSessionId(url?: string): Promise<string>;
interface StreamCallbacks {
    onChunk: (text: string) => void;
    onDone: (fullText: string) => void;
    onError: (err: Error) => void;
    onSuggestedQuestions?: (questions: SuggestedQuestion[]) => void;
    onAction?: (actions: EventAction[]) => void;
    onPara?: (para: ParaSource[]) => void;
}
/**
 * 消费 SSE 流，通过回调逐步更新 UI
 */
declare function consumeStream(response: Response, callbacks: StreamCallbacks): Promise<void>;
declare function createUserMessage(content: string): ChatMessage;
declare function createAssistantMessage(partial?: string): ChatMessage;

export { StreamCallbacks, consumeStream, createAssistantMessage, createUserMessage, fetchSessionId, getAuthToken, sendChatRequest };