'use strict';

module.exports = function array_intersect(arr1) {
  // eslint-disable-line camelcase
  //  discuss at: http://locutus.io/php/array_intersect/
  // original by: Brett Zamir (http://brett-zamir.me)
  //      note 1: These only output associative arrays (would need to be
  //      note 1: all numeric and counting from zero to be numeric)
  //   example 1: var $array1 = {'a' : 'green', 0:'red', 1: 'blue'}
  //   example 1: var $array2 = {'b' : 'green', 0:'yellow', 1:'red'}
  //   example 1: var $array3 = ['green', 'red']
  //   example 1: var $result = array_intersect($array1, $array2, $array3)
  //   returns 1: {0: 'red', a: 'green'}

  var retArr = {};
  var argl = arguments.length;
  var arglm1 = argl - 1;
  var k1 = '';
  var arr = {};
  var i = 0;
  var k = '';

  arr1keys: for (k1 in arr1) {
    // eslint-disable-line no-labels
    arrs: for (i = 1; i < argl; i++) {
      // eslint-disable-line no-labels
      arr = arguments[i];
      for (k in arr) {
        if (arr[k] === arr1[k1]) {
          if (i === arglm1) {
            retArr[k1] = arr1[k1];
          }
          // If the innermost loop always leads at least once to an equal value,
          // continue the loop until done
          continue arrs; // eslint-disable-line no-labels
        }
      }
      // If it reaches here, it wasn't found in at least one array, so try next value
      continue arr1keys; // eslint-disable-line no-labels
    }
  }

  return retArr;
};
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