credentials_parser.js

'use strict';

let Environment = require('./environment').Environment;

class CredentialsParser {
  parseClientCredentials(clientId, clientSecret) {
    this.clientId = clientId;
    this.clientSecret = clientSecret;
    if (!this.clientId) { throw new Error('Missing clientId'); }
    if (!this.clientSecret) { throw new Error('Missing clientSecret'); }

    if (this.clientId.indexOf('client_id') !== 0) { throw new Error('Value passed for clientId is not a client id'); }
    if (this.clientSecret.indexOf('client_secret') !== 0) { throw new Error('Value passed for clientSecret is not a client secret'); }

    let clientIdEnvironment = this.parseEnvironment(this.clientId);
    let clientSecretEnvironment = this.parseEnvironment(this.clientSecret);

    if (clientIdEnvironment !== clientSecretEnvironment) {
      throw new Error(`Mismatched credential environments: clientId environment is ${clientIdEnvironment} and clientSecret environment is ${clientSecretEnvironment}`);
    }

    this.environment = clientIdEnvironment;

    return this.environment;
  }

  parseAccessToken(accessToken) {
    this.accessToken = accessToken;
    if (!this.accessToken) { throw new Error('Missing access token'); }

    if (this.accessToken.indexOf('access_token') !== 0) { throw new Error('Value passed for accessToken is not a valid access token'); }

    this.merchantId = this.accessToken.split('$')[2];
    this.environment = this.parseEnvironment(this.accessToken);

    return this.environment;
  }

  parseEnvironment(credential) {
    let env = credential.split('$')[1];

    switch (env) {
      case 'development':
      case 'integration': return Environment.Development;
      case 'qa': return Environment.Qa;
      case 'sandbox': return Environment.Sandbox;
      case 'production': return Environment.Production;
      default: throw new Error(`Unknown environment: ${env}`);
    }
  }
}

module.exports = {CredentialsParser: CredentialsParser};