import { HttpEvent, HttpInterceptorFn, HttpRequest, HttpHandlerFn } from "@angular/common/http";
import { inject } from "@angular/core";
import { Observable, finalize } from "rxjs";
import { LoaderService } from "../services/loader.service";

let totalRequests = 0;

export const loadingInterceptor: HttpInterceptorFn = (
  req: HttpRequest<unknown>,
  next: HttpHandlerFn
): Observable<HttpEvent<unknown>> => {

  const loadingSvc = inject(LoaderService);

  if(req.url.includes('/RefreshToken')) {
    return next(req);
  }

  totalRequests++;
  loadingSvc.setLoading(true);

  return next(req).pipe(
    finalize(() => {
      totalRequests--;
      if (totalRequests === 0) {
        loadingSvc.setLoading(false);
      }
    })
  );
};