import { getCookie } from "./cookie";

const baseURL = "";

export class RequestError extends Error {
   response: any;
   constructor(message: string, response: any) {
      super(message);
      this.name = "RequestError";
      this.response = response;
   }
}

export default async function request(
   endpoint: string,
   parameters: { [key: string]: string } = {},
   method: "GET" | "POST" | "DELETE" | "PUT" = "GET",
   body?: any,
   authInParam = false,
   redirect = false
) {
   let pairs = [];

   if (authInParam) {
      parameters.login = getCookie("login");
      parameters.special = getCookie("special");
   }

   for (let key in parameters) {
      pairs.push(key + "=" + parameters[key]);
   }

   let url = endpoint;
   if (pairs.length > 0) {
      url += "?" + pairs.join("&");
   }

   return fetch(baseURL + url, {
      method,
      body: JSON.stringify(body),
      credentials: "same-origin",
      headers: {
         "content-type": "application/json",
      },
   })
      .then((e) => {
         if (e.status !== 200) throw new Error(e.statusText);
         return e.json();
      })
      .then((data) => {
         if (data.error) {
            if (redirect && data.additional && data.additional.auth) {
               let state = btoa(
                  window.location.pathname + window.location.hash
               );
               window.location.href = `/login?state=${state}&base64=true`;
            }
            return Promise.reject(new RequestError(data.error, data));
         }
         return data;
      });
}