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import { hmac } from 'https://deno.land/x/hmac@v2.0.1/mod.ts';
export type APIResponse = {  status: boolean;  response: any;};
export class ApiTransport {  protected apiEndPointURL: string;  protected apiKey: string;  protected apiSecret: string;
  constructor(apiEndPointURL: string, apiKey: string, apiSecret: string) {    this.apiEndPointURL = apiEndPointURL;    this.apiKey = apiKey;    this.apiSecret = apiSecret;  }
  public sendRequest = async (path: string, body: any) => {    const output: APIResponse = {      status: false,      response: undefined,    };
    const b = JSON.stringify(body);    const signature = hmac('sha256', this.apiSecret, b, 'utf8', 'hex');
    const headers: HeadersInit = {      'Content-Type': 'application/json',      'API-KEY': this.apiKey,      'HASH-SIGNATURE': signature,    };
    try {      const req = await fetch(`${this.apiEndPointURL}${path}`, {        method: 'POST',        headers,        body: b,      });      const res = await req.json();
      if (req.ok) {        output.status = true;        output.response = res;      } else {        output.response = res.msg;      }    } catch (error) {      output.response = error.message;    }
    return output;  };}