import axios, { AxiosRequestConfig } from 'axios';

/**
 * Simple HTTP wrapper that connects to the CIRCUS RS server and returns the response
 * in the appropriate format.
 */
export default class RsHttpClient {
  /**
   * Host name, optionally with port in `host:port` format
   */
  private host: string;

  /**
   * OAuth-compatible access token
   */
  private token: string | undefined;

  constructor(host: string = 'http://localhost:3000', token?: string) {
    this.host = host;
    this.token = token;
  }

  public request(
    command: string,
    params: any,
    responseType: string = 'json'
  ): Promise<any> {
    const url = `${this.host}/${command}`;

    const config: AxiosRequestConfig = {
      method: 'get',
      url,
      params,
      responseType
    };

    if (typeof this.token === 'string') {
      config.headers = { Authorization: `Bearer ${this.token}` };
    }
    return (axios(config).then(res => res.data) as any) as Promise<any>;
  }
}