smartid-calls/class/signing.ts

Smart-ID client module for Node.JS with proxy layer

import { RequestI, ModuleConfigI } from '../types/Request';
import AuthHash from '../authhash';
import axios from 'axios';


export class Signing {

  private config: ModuleConfigI;
  private hash: string;
  private request: RequestI;

  constructor(config: ModuleConfigI, documentNumber: string, digestToSign: string) {
    this.config = config;
    this.hash = digestToSign;
    this.request = {
      documentNumber: documentNumber
    };
  }

  async sign(displayText: string): Promise<any> {
    const response = await axios({
      method: 'post',
      proxy: this.config.proxy || false,
      url: this.config.host + '/signature/document/' + this.request.documentNumber,
      responseType: 'json',
      validateStatus: (status) => status === 200,
      data: Object.assign({
        hash: this.hash,
        hashType: this.config.algorithm,
        displayText: (typeof displayText === 'string' ? displayText : undefined)
        },
        this.config.requestParams
      )
    });

    let body = response.data;
    if (typeof body !== 'object' || !body.sessionID) {
      throw new Error('Invalid response');
    }

    const code = AuthHash.calculateVerificationCode(this.hash, this.config.algorithm);

    return {
      verificationCode: code,
      sessionId: response.data.sessionID,
    }
  }
}