export type RealtimeBrowserStatus =
  | 'idle'
  | 'connecting'
  | 'connected'
  | 'listening'
  | 'speaking'
  | 'calling-tool';

export interface RealtimeBrowserCallbacks {
  onStatus: (status: RealtimeBrowserStatus) => void;
  onTraineeTranscript: (text: string) => void;
  onCustomerTranscript: (text: string) => void;
  onAudioPlaybackBlocked: (blocked: boolean) => void;
  onToolCall: (callId: string, name: string, argsJson: string) => Promise<string>;
  onTerminated: () => void;
  onError: (message: string) => void;
}

export interface RealtimeBrowserEngine {
  start: (sessionUpdate: Record<string, unknown>, sessionId?: string) => Promise<void>;
  stop: () => void;
  resumeAudio: () => Promise<boolean>;
}

export const isRealtimeBrowserSupported: () => boolean;

export const createRealtimeBrowserEngine: (
  callbacks: RealtimeBrowserCallbacks,
  exchangeSdp: (offerSdp: string, sessionId?: string) => Promise<string>
) => RealtimeBrowserEngine;