import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
/**
 * Global HTTP service that wraps Angular's HttpClient to manage a loading indicator.
 * It exposes a "loading$" observable that emits true when a request starts
 * and false when it completes (if showLoader is enabled), and delegates
 * actual requests to HttpClient.
 */
export interface HttpOptions {
    /** Whether to show a global loading spinner during this request */
    showLoader?: boolean;
    /** Optional HTTP headers */
    headers?: HttpHeaders;
    /** Optional query parameters */
    params?: HttpParams;
}
export declare class HttpService {
    private http;
    /**
     * Internal subject tracking current loading state. When true, a loader is active.
     */
    private loadingSubject;
    /** Observable consumers can subscribe to show/hide a global spinner */
    loading$: Observable<boolean>;
    constructor(http: HttpClient);
    /**
     * Core request wrapper.
     * - If options.showLoader is true, emits loadingSubject.next(true) before the request
     * - Delegates to HttpClient.request<T>
     * - Uses finalize() to emit loadingSubject.next(false) when the request ends (success or error)
     */
    private request;
    /**
     * Shortcut for GET requests. Builds HttpParams from a plain object.
     */
    get<T>(url: string, params?: Record<string, any>, options?: HttpOptions): Observable<T>;
    /** Convenience methods for other HTTP verbs **/
    post<T>(url: string, body: any, options?: HttpOptions): Observable<T>;
    put<T>(url: string, body: any, options?: HttpOptions): Observable<T>;
    patch<T>(url: string, body: any, options?: HttpOptions): Observable<T>;
    delete<T>(url: string, params?: Record<string, any>, options?: HttpOptions): Observable<T>;
    static ɵfac: i0.ɵɵFactoryDeclaration<HttpService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HttpService>;
}