export interface ApiAnswer {
  status: number;
  user?: string;
  role?: string;
  error?: string;
  retryAfter?: string | null;
}

export interface RelayApi {
  verifyToken(token: string, address: string): Promise<ApiAnswer>;
  redeemTicket(ticket: string): Promise<ApiAnswer>;
}

export interface RelayOptions {
  port?: number;
  host?: string;
  api: RelayApi;
  tools: () => Promise<object[]>;
  origins: string[];
  trustProxy?: boolean;
  backend?: string;
  log?: (line: string) => void;
  callTimeoutMs?: number;
  /** How long a call may take once the tab said it is asking the user. */
  waitTimeoutMs?: number;
  helloTimeoutMs?: number;
  pingMs?: number;
  maxMessageBytes?: number;
  maxBodyBytes?: number;
  sessionIdleMs?: number;
  agentRecentMs?: number;
  maxSessionsPerAccount?: number;
}

export interface Relay {
  port: number;
  stats(): { tabs: string[]; sessions: string[] };
  close(): Promise<void>;
}

export const PROTOCOL_VERSIONS: string[];
export const VIEW_URI: string;
export const CLOSE: { replaced: number; badHello: number; refused: number; helloTimeout: number };
export function startRelay(options: RelayOptions): Promise<Relay>;