Content Comparison

import * as jsonwebtoken from 'jsonwebtoken';
import fs from "fs";
import {JWTPrivateKey} from "./JWTPrivateKey";
import axios from "axios";

   
export interface JWTPrivateKey {
    type: string,
    keyId: string,    
    key: string,
    userId: string
}
   
public static createSignedJWT(): string {
    // Read the private key
    const rawPrivateKey = fs.readFileSync('./privateKey.json', 'utf8');
    const privateKey = JSON.parse(rawPrivateKey) as JWTPrivateKey;
    
    // Valid from now minus 10 seconds
    const validFrom: number = Math.floor(Date.now() / 1000) - 10;
    
    // Expiration 1 hour after now
    const expiration: number = Math.floor(Date.now() / 1000) + (60 * 60);
    
    // Create a JWT token
    const jwtToSign = {
        iss: privateKey.userId,
        sub: privateKey.userId,
        aud: 'https://micromate-q4ee42.zitadel.cloud',
        iat: validFrom,
        exp: expiration
    };
    
    // Sign and return the token
    return jsonwebtoken.sign(jwtToSign, privateKey.key, {algorithm: 'RS256', keyid: privateKey.keyId});
}

public static async getOAuthToken(): Promise<string> {
    // Create signed token
    const token = createSignedJWT();
    
    // Request to token endpoint to get an access token
    // which then can be used to access the micromate public api
    const data = await axios.post<{ token_type: string, access_token: string, expires_in: number }>('https://login.micromate.ai/oauth/v2/token', {}, {
        params: {
            'grant_type': 'urn:ietf:params:oauth:grant-type:jwt-bearer',
            'scope': 'openid profile email urn:zitadel:iam:org:project:id:<PROJECT ID>69234237810729019:aud',
            'assertion': token
        },
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
        }
    });
    
    // Return access token
    return data.data.access_token;
}