common_tag_values.js

'use strict';

var fs = require('fs');
var join = require('path').join;
const primaryTags = require('../lib/primary_tags').primaryTags;

module.exports = commonTagValues;

function commonTagValues(newVersion, oldVersion) {
  var result = false;

  if (newVersion.deleted || !newVersion.properties) return false;

  var primary_tag_present = false;
  result = {'result:common_tag_values': true};

  for (var i = primaryTags.length - 1; i >= 0; i--) {
    var tag = primaryTags[i];

    if (tag in newVersion.properties) {
      primary_tag_present = true;
      var data = fs.readFileSync(
        join(__dirname, '..', 'common_tag_values/' + tag + '.json')
      );
      var commonValues = JSON.parse(data.toString()).data;
      var value = newVersion.properties[tag];
      for (var j = commonValues.length - 1; j >= 0; j--) {
        if (
          commonValues[j]['value'] === value &&
          !(commonValues[j]['fraction'] <= 0.0 &&
            commonValues[j]['in_wiki'] === false)
        ) {
          return false;
        }
      }
    }
  }
  if (!primary_tag_present) return false;
  return result;
}