const logger = require('log4js').getLogger('Directions 🔧');

const { get, isEmpty, has, uniq } = require('lodash');
const humanizeDuration = require('humanize-duration');

logger.level = 'debug';

const htmlTidy = /<(\/*?)(?!(em|p|br\s*\/|strong|h1|h2|h3))\w+?.+?>/gim;

function reduceEstDirections(body = '') {
  if (body === '') return {};

  // logger.debug(body);
  const jBody = JSON.parse(body);
  const obj = {};
  const { ResultSet } = jBody;
  const streets = [];
  const steps = [];

  if (has(ResultSet, 'Result')) {
    const directions = get(ResultSet, 'Result.yahoo_driving_directions');
    const route = get(directions, 'directions.route_leg');

    obj.totalTime = parseFloat(get(directions, 'total_time'));
    obj.totalTimeWithTraffic = parseFloat(get(directions, 'total_time_with_traffic'));
    obj.readable = humanizeDuration((obj.totalTimeWithTraffic !== 0 ? obj.totalTimeWithTraffic : obj.totalTime) * 60 * 1000);

    obj.timePercentage = ((obj.totalTime * ( obj.totalTimeWithTraffic / 100 )) + obj.totalTime) - 100;

    if ( obj.totalTimeWithTraffic > (obj.totalTime * 1.75)) {
      obj.traffic = 'heavy traffic';
      obj.className = 'trafficHeavy';
    }
    else if ( obj.totalTimeWithTraffic > (obj.totalTime * 1.5)) {
      obj.traffic = 'some traffic';
      obj.className = 'trafficMedium';
    }
    else if ( obj.totalTimeWithTraffic > (obj.totalTime * 1.25)) {
      obj.traffic = 'light traffic';
      obj.className = 'trafficLight';
    }
    else {
      obj.traffic = 'no traffic';
      obj.className = 'trafficNone';
    }

    for (const item of route) {
      if (item.hasOwnProperty('street')) {
        const street = item.street.split(',');
        if (street[0] !== '') streets.push(street[0]);
      }

      if (has(item, 'description')) {
        steps.push(item.description);
      }
    }
    obj.directions = steps;
    obj.streets = uniq(streets);
  }

  return obj;
}

function reduceIncidents(body = '') {
  if (body === '') return [];
  const workObj = Object.assign({}, body);
  const incidents = [];

  const items = get(workObj, 'items');

  for (const item of items) {
    const title = item.title.split(' ');
    incidents.push({
      'title' : item.title,
      'description': item.description,
      'road' : title[0]
    });
  }

  return incidents;
}

function combine(traffic, incidents) {
  const workObj = Object.assign({ 'incidents':[] }, traffic);

  for (const item of incidents) 

    if (workObj.streets.indexOf(item.road) > -1) 
      workObj.incidents.push(item);

  return workObj;
}

module.exports = { reduceEstDirections, reduceIncidents, combine };