import { Injectable } from "@angular/core";
import { RequestService } from "./request.service";
import { UserStateResponse } from "../models/user-state-request.model";
import { BehaviorSubject, Observable } from "rxjs";
import { LoginRequest, LoginResponse } from "../models/login-request.model copy";
import { Router } from "@angular/router";

@Injectable()
export class AuthService {
    
    currentState$ = new BehaviorSubject<UserStateResponse | null | undefined>(undefined);

    constructor(
        private requestService: RequestService,
        private router: Router
    ) {
    }

    readUserState(): void {
        this.requestService.get(
            'user/state',
            {},
            (response: UserStateResponse) => {
                this.currentState$.next(response);
            },
            () => {
                this.currentState$.next(undefined);
            }
        )
    }

    login(body: LoginRequest): LoginResponse|null {
        let result = null;

        this.requestService.post(
            'auth/login-user',
            body,
            (response: LoginResponse) => {
                result = response;
                this.readUserState();
            }
        );

        return result;
    }

    logout(): void {
        this.requestService.post(
            'auth/logout-user',
            {},
            (response: any) => {
                this.readUserState();
            }
        );
    }
}