Vizzuality/gfw-climate

define(['Class', 'uri', 'bluebird', 'map/services/DataService'], function(
  Class,
  UriTemplate,
  Promise,
  ds
) {
  'use strict';

  var GET_REQUEST_ID = 'ReportService:get';

  var APIURL = window.gfw.config.GFW_API_HOST_V2;

  var APIURLS = {
    indicators:
      '/api/reports/{?iso,reference_start_year,reference_end_year,monitor_start_year,monitor_end_year,thresh,above,below,primary_forest,exclude_plantations}'
  };

  var ReportService = Class.extend({
    get: function(status) {
      return new Promise(
        function(resolve, reject) {
          this.report = status;
          var url = this.getUrl();

          ds.define(GET_REQUEST_ID, {
            cache: false,
            url: url,
            type: 'GET',
            dataType: 'json',
            contentType: 'application/json; charset=utf-8',
            decoder: function(data, status, xhr, success, error) {
              if (status === 'success') {
                success(data, xhr);
              } else if (status === 'fail' || status === 'error') {
                error(xhr.responseText);
              } else if (status === 'abort') {
              } else {
                error(xhr.responseText);
              }
            }
          });

          var requestConfig = {
            resourceId: GET_REQUEST_ID,
            success: function(data, status) {
              resolve(data, status);
            },
            error: function(errors) {
              reject(errors);
            }
          };

          this.abortRequest();
          this.currentRequest = ds.request(requestConfig);
        }.bind(this)
      );
    },

    getUrl: function() {
      return new UriTemplate(APIURLS['indicators']).fillFromObject(this.report);
    },

    /**
     * Abort the current request if it exists.
     */
    abortRequest: function() {
      if (this.currentRequest) {
        this.currentRequest.abort();
        this.currentRequest = null;
      }
    }
  });

  return new ReportService();
});