// vim: set tw=80 ts=2 sw=2 sts=2:

import * as moment from 'moment';

import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Rx';

import { HttpClient, HttpParams } from "@angular/common/http";

import { Category } from './category';

@Injectable()
export class CategoryService {
  constructor(
    private http: HttpClient
  ) {}

  formatDate(date: Date|string) {
    if(date instanceof Date) {
      return moment(date).format('YYYY-MM-DD');
    }

    return date;
  }

  query(id: number, minDate: Date = null, maxDate: Date = null): Observable<Category[]> {
    let params: HttpParams = new HttpParams();

    if(minDate) {
      params = params.set('begin', this.formatDate(minDate));
    }

    if(maxDate) {
      params = params.set('end', this.formatDate(maxDate));
    }

    return this.http.get<Category[]>(`/api/account/${id}/category`, { params: params});
  }
}