// 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 { Restangular } from "ngx-restangular";

import { Operation } from './operation';

@Injectable()
export class OperationService {
  constructor(
    private restangular: Restangular
  ) {}

  private all() {
    return this.restangular.all('operation');
  }

  private one(id: number) {
    return this.restangular.one('operation', id);
  }

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

    return date;
  }

  query(
    accountId: number,
    minDate: Date|string = null,
    maxDate: Date|string = null
  ): Observable<Operation[]> {
    var dateRange: any = {
      account_id: accountId
    };

    if(minDate) {
      dateRange.begin = this.formatDate(minDate);
    }

    if(maxDate) {
      dateRange.end = this.formatDate(maxDate);
    }

    return this.all().getList(dateRange);
  }
  
  get(id: number): Observable<Operation> {
    return this.one(id).get();
  }

  create(operation: Operation): Observable<Operation> {
    return this.all().post(operation);
  }

  update(operation: Operation): Observable<Operation> {
    return this.one(operation.id).post(null, operation);
  }

  delete(operation: Operation): Observable<Operation> {
    return this.one(operation.id).remove();
  }
}