import { Injectable } from '@angular/core';
import { catchError } from 'rxjs/operators';
import { Observable } from 'rxjs/internal/Observable';
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
import { PurchaseEntries } from './purchase-entries';
import { ErrorLoggerService } from '../core/error-logger.service';

const httpOptions = {
  headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
};

const url = '/api/purchase-entries';
const serviceName = 'PurchaseEntriesService';

@Injectable({
  providedIn: 'root',
})
export class PurchaseEntriesService {
  constructor(private http: HttpClient, private log: ErrorLoggerService) {}

  list(startDate: string, finishDate): Observable<PurchaseEntries> {
    startDate = startDate ? `/${startDate}` : '';
    finishDate = finishDate ? `/${finishDate}` : '';
    return <Observable<PurchaseEntries>>(
      this.http
        .get<PurchaseEntries>(`${url}${startDate}${finishDate}`)
        .pipe(catchError(this.log.handleError(serviceName, 'list')))
    );
  }
}