import { Injectable } from '@angular/core';
import { BehaviorSubject, Observable } from 'rxjs';
import { LoadingService } from '../loading/loading.service';

export type Error = {
    name: string;
} | null;

@Injectable({ providedIn: 'root' })
export class ErrorService {
    readonly hasError$: Observable<Error>;
    private readonly _errorEvent$ = new BehaviorSubject<Error>(null);

    constructor(private readonly _loadingService: LoadingService) {
        this.hasError$ = this._errorEvent$.asObservable();
    }

    private _error: Error = null;

    get error(): Error {
        return this._error;
    }

    set(error: Error): void {
        this._loadingService.stop();
        this._error = error;
        this._errorEvent$.next(error);
    }

    clear(): void {
        this._errorEvent$.next(null);
        this._error = null;
    }
}