import type { OxyServices } from '../OxyServices';
import type { DeviceCredential, SessionClientHost } from './SessionClient';

/**
 * Thin `SessionClientHost` adapter over an `OxyServices` instance.
 *
 * `SessionClient` is host-agnostic: it only needs a REST + token surface.
 * `OxyServices` already exposes all of that except `getCurrentAccountId`,
 * which has no direct equivalent — the adapter holds a mutable ref set by
 * the caller (`OxyContext` in `@oxy.so/services`) via `setCurrentAccountId`.
 *
 * Shared here (rather than duplicated per consumer) because it is entirely
 * platform-agnostic: every method it calls exists identically on
 * `OxyServices` regardless of host (web, Expo/RN, Node).
 */
export function createSessionClientHost(oxyServices: OxyServices): SessionClientHost & {
  setCurrentAccountId(id: string | null): void;
  setDeviceCredential(credential: DeviceCredential | null): void;
} {
  let currentAccountId: string | null = null;
  let deviceCredential: DeviceCredential | null = null;
  return {
    makeRequest: (method, url, data, options) => oxyServices.request(method, url, data, options),
    getBaseURL: () => oxyServices.baseURL,
    getAccessToken: () => oxyServices.session.accessToken,
    getDeviceCredential: () => deviceCredential,
    onTokensChanged: (listener) => oxyServices.session.onChange(listener),
    setTokens: (accessToken) => oxyServices.session.setAccessToken(accessToken),
    getCurrentAccountId: () => currentAccountId,
    setCurrentAccountId: (id) => {
      currentAccountId = id;
    },
    setDeviceCredential: (credential) => {
      deviceCredential = credential;
    },
  };
}