export interface XuqmInitOptions {
  appKey: string
  debug?: boolean
}

export interface XuqmConfig {
  appKey: string
  apiUrl: string
  imWsUrl: string
  fileServiceUrl: string  // fetched from remote config
  debug: boolean
}

let _config: XuqmConfig | null = null
let _userId: string | null = null

export interface XuqmUserInfo {
  userId?: string
  name?: string
  email?: string
  phone?: string
}

let _userInfo: XuqmUserInfo | null = null

export function initConfigFromRemote(
  options: XuqmInitOptions,
  remote: { imWsUrl: string; fileServiceUrl: string; apiUrl: string },
): void {
  _config = {
    appKey:         options.appKey,
    apiUrl:         remote.apiUrl,
    imWsUrl:        remote.imWsUrl,
    fileServiceUrl: remote.fileServiceUrl,
    debug:          options.debug ?? false,
  }
}

export function getConfig(): XuqmConfig {
  if (!_config) throw new Error('[XuqmSDK] Not initialized — call XuqmSDK.initialize() first.')
  return _config
}

export function setUserId(userId: string | null): void {
  _userId = userId
}

export function getUserId(): string | null {
  return _userId
}

export function isInitialized(): boolean {
  return _config !== null
}

export function setUserInfo(info: XuqmUserInfo | null): void {
  _userInfo = info
  // Sync userId for backward compatibility
  if (info?.userId) {
    _userId = info.userId
  }
}

export function getUserInfo(): XuqmUserInfo | null {
  return _userInfo
}