/////////////////////////////////////////////////
// example usage:
//
// import eventTracking from './';
// const tracking = eventTracking();
//
// tracking.sharedReport({
//   foo: 'bar'
// }, ['routeName']);
//
// where:
// args[0]: {} of contextual data
// args[1]: [] of global data keys to pull in
//
/////////////////////////////////////////////////

import ReactGA from 'react-ga';
import { getRouteName } from 'APP/lib/urlHelpers';

const fetchGlobalData = globals => ({
  routeName: globals.includes('routeName') ? getRouteName() : null,
  // other global values
});

const events = {
  sharedReport: (data) => {
    const { range, recipientCount, globals } = data;
    const label = `${ globals.routeName } PDF / Recipients: ${ recipientCount } / ${ range }`;

    ReactGA.event({
      category: 'Reports',
      action: 'Share report',
      label
    });
  },

  selectedReportDateFilter: (data) => {
    const { range, startDate, endDate, globals } = data;
    const label = `${ globals.routeName } / ${ range } / ${ startDate } to ${ endDate }`;

    ReactGA.event({
      category: 'Reports',
      action: 'Select date filter',
      label
    });
  }
};

export default function () {
  const eventMap = {};
  const bindGlobalsToData = event => (data, globals = []) => {
    const globalsData = fetchGlobalData(globals);
    return events[event]({
      ...data,
      globals: { ...globalsData }
    });
  };

  Object.keys(events).forEach(e => {
    eventMap[e] = bindGlobalsToData(e);
  });

  return eventMap;
}