icynet-admin/lib/utils/fetch.ts

import { CLIENT_ID, CLIENT_SECRET, TOKEN_URL } from '../constants';
import { OAuth2TokenDto } from '../types/token-response.interface';

export async function fetchBearer<T>(
  accessToken: string,
  url: string,
  ...options: any[]
): Promise<T> {
  return fetch(url, {
    headers: {
      Authorization: `Bearer ${accessToken}`,
      'Content-Type': 'application/json',
    },
    ...options,
  }).then((res) => res.json());
}

export async function fetchToken(code: string): Promise<OAuth2TokenDto> {
  return fetch(TOKEN_URL, {
    headers: {
      Authorization: `Basic ${Buffer.from(
        `${CLIENT_ID}:${CLIENT_SECRET}`
      ).toString('base64')}`,
      'Content-Type': 'application/json',
    },
    method: 'POST',
    body: JSON.stringify({
      grant_type: 'authorization_code',
      code,
    }),
  }).then((res) => res.json());
}