import { inject, Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Router } from '@angular/router';
import { injectQuery, QueryClient } from '@tanstack/angular-query-experimental';
import { lastValueFrom } from 'rxjs';
import { handleRequest, isValidResponse } from '../helpers/http';
import { Login, LoginCredentials, SignupCredentials, UserData } from '../models/auth.models';
import { HttpPlainResponse, HttpResponse } from '../models/response.interface';
import { injectHeadersService } from './headers.service';

@Injectable({
	providedIn: 'root',
})
export class AuthService {
	private http = inject(HttpClient);
	private router = inject(Router);
	private queryClient = inject(QueryClient);
	private headerServ = injectHeadersService();
	async requestLoginStatus(): Promise<boolean> {
		try {
			const { status } = await lastValueFrom(this.http.get<HttpResponse<Login>>('auth/login'));
			this.queryClient.setQueryData(['login'], isValidResponse(status));
			return isValidResponse(status);
		} catch {
			this.queryClient.setQueryData(['login'], false);
			return false;
		}
	}

	loginStatus = injectQuery(() => ({
		queryKey: ['login'],
		gcTime: 1000,
		queryFn: () => this.requestLoginStatus(),
	}));
	user = injectQuery(() => ({
		queryKey: ['user'],
		refetchOnWindowFocus: false,
		enabled: !!this.loginStatus.data(),
		queryFn: async () => {
			const { data } = await lastValueFrom(this.http.get<HttpResponse<UserData>>(`users/me`));
			return data;
		},
	}));
	// Llamado para validar credenciales (login)
	async login(credentials: Partial<LoginCredentials>) {
		const { data } = await handleRequest(
			this.http.post<HttpResponse<Login>>(`auth/login`, credentials)
		);
		this.headerServ.setTokenCookie(data);
		this.queryClient.invalidateQueries({ queryKey: ['login'] });
		this.queryClient.invalidateQueries({ queryKey: ['user'] });
		await this.router.navigate(['/app']);
	}
	async signup(credentials: Partial<SignupCredentials>) {
		await handleRequest(this.http.post<HttpResponse<Login>>(`auth/register`, credentials));
		return this.login({ email: credentials.email });
	}
	async logout() {
		const { status } = await lastValueFrom(this.http.get<HttpPlainResponse>(`auth/logout`));
		if (isValidResponse(status)) {
			this.queryClient.invalidateQueries({ queryKey: ['login'] });
			this.headerServ.clearHeaders();
		}
		return this.router.navigate(['/']);
	}
	// utils
	refreshUser() {
		this.queryClient.invalidateQueries({ queryKey: ['user'] });
	}
}

export const injectAuthService = () => inject(AuthService);