import * as AccessManagerApiClient from '@mulesoft/access-management-api-client';
import { AppConfig } from '@mulesoft/anypoint-client-core';

export default class Authentication {
  private _username: string;
  private _password: string;
  private _baseUrl: string;
  private _accessManagerToken: string;
  private _apiManagerToken: string;
  private appConfig = AppConfig.setup();

  constructor(baseUrl: string, username: string, password: string) {
    this._baseUrl = baseUrl;
    this._username = username;
    this._password = password;
  }

  public async getApiManagerOptions(uri: string): Promise<any> {
    if (!this._apiManagerToken) {
      const authenticationResponse: any = (await this.apiManagerAuthentication());
      this._apiManagerToken = authenticationResponse;
    }

    const options: any = {
      baseUri: `${this._baseUrl}${uri}`,
      headers: {
        'Authorization': `bearer ${this._apiManagerToken}`,
        'Content-Type': 'application/json'
      }
    };

    return options;
  }

  public async getAccessManagerOptions(uri: string): Promise<any> {
    if (!this._accessManagerToken) {
      const authenticationResponse = await this.accessManagerAuthentication();
      this._accessManagerToken = JSON.parse(authenticationResponse.body).access_token;
    }

    const options: any = {
      baseUri: `${this._baseUrl}${uri}`,
      headers: {
        'Authorization': `bearer ${this._accessManagerToken}`,
        'Content-Type': 'application/json'
      }
    };

    return options;
  }

  private async accessManagerAuthentication(): Promise<any> {
    const options: any = {
      baseUri: `${this._baseUrl}${this.appConfig.uris.coreServices}`
    };

    const body: any = {
      password: this._password,
      username: this._username
    };

    const authenticationClient = new AccessManagerApiClient(options);
    return await authenticationClient.login.post(body);
  }

  private async apiManagerAuthentication(): Promise<any> {
    const authenticationResponse = await this.accessManagerAuthentication();
    this._accessManagerToken = JSON.parse(authenticationResponse.body).access_token;

    const options: any = {
      baseUri: `${this._baseUrl}${this.appConfig.uris.apiPlatform}/session`,
      headers: {
        'Content-Type': 'application/json'
      }
    };

    const body: any = {
      token: this._accessManagerToken
    };

    const authenticationClient = new AccessManagerApiClient(options);
    // tslint:disable
    console.log('=======> OPTS: ', options);
    console.log('=======> BODY: ', body);
    return authenticationClient.api.session.post(body);
  }
}