import { HttpClient, HttpParams } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable, of as observableOf } from 'rxjs';
import { catchError } from 'rxjs/operators';

import { ErrorLoggerService } from '../core/error-logger.service';

import { EmployeeAttendance } from './employee-attendance';

const url = '/api/employee-attendance';
const serviceName = 'EmployeeAttendanceService';

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

  get(id: string | null, startDate: string | null, finishDate: string | null): Observable<EmployeeAttendance> {
    const getUrl: string = id === null ? url : `${url}/${id}`;
    const options = { params: new HttpParams() };
    if (startDate !== null) {
      options.params = options.params.set('s', startDate);
    }
    if (finishDate !== null) {
      options.params = options.params.set('f', finishDate);
    }
    return this.http
      .get<EmployeeAttendance>(getUrl, options)
      .pipe(catchError(this.log.handleError(serviceName, `get id=${id}`))) as Observable<EmployeeAttendance>;
  }

  save(employeeAttendance: EmployeeAttendance): Observable<EmployeeAttendance> {
    if (!employeeAttendance.employee) {
      return observableOf(new EmployeeAttendance());
    }
    const { id } = employeeAttendance.employee;
    return this.http
      .post<EmployeeAttendance>(`${url}/${id}`, employeeAttendance)
      .pipe(catchError(this.log.handleError(serviceName, 'save'))) as Observable<EmployeeAttendance>;
  }
}