https://connexion.mesdemarches06.fr/static/authentic2/js/email_domains_suggestions.js

1String.prototype.similarity = function(string) {
2  // adapted from https://github.com/jordanthomas/jaro-winkler (licensed as MIT)
3  var s1 = this, s2 = string;
4  var m = 0;
5  var i;
6  var j;
7  // Exit early if either are empty.
8  if (s1.length === 0 || s2.length === 0) {
9    return 0;
10  }
11
12  // Convert to upper
13  s1 = s1.toUpperCase();
14  s2 = s2.toUpperCase();
15  // Exit early if they're an exact match.
16  if (s1 === s2) {
17    return 1;
18  }
19
20  var range = (Math.floor(Math.max(s1.length, s2.length) / 2)) - 1;
21  var s1Matches = new Array(s1.length);
22  var s2Matches = new Array(s2.length);
23  for (i = 0; i < s1.length; i++) {
24    var low  = (i >= range) ? i - range : 0;
25    var high = (i + range <= (s2.length - 1)) ? (i + range) : (s2.length - 1);
26    for (j = low; j <= high; j++) {
27      if (s1Matches[i] !== true && s2Matches[j] !== true && s1[i] === s2[j]) {
28        ++m;
29        s1Matches[i] = s2Matches[j] = true;
30        break;
31      }
32    }
33  }
34
35  // Exit early if no matches were found.
36  if (m === 0) {
37    return 0;
38  }
39
40  // Count the transpositions.
41  var k = 0;
42  var numTrans = 0;
43  for (i = 0; i < s1.length; i++) {
44    if (s1Matches[i] === true) {
45      for (j = k; j < s2.length; j++) {
46        if (s2Matches[j] === true) {
47          k = j + 1;
48          break;
49        }
50      }
51      if (s1[i] !== s2[j]) {
52        ++numTrans;
53      }
54    }
55  }
56
57  var weight = (m / s1.length + m / s2.length + (m - (numTrans / 2)) / m) / 3;
58  var l = 0;
59  var p = 0.1;
60  if (weight > 0.7) {
61    while (s1[l] === s2[l] && l < 4) {
62      ++l;
63    }
64    weight = weight + l * p * (1 - weight);
65  }
66  return weight;
67}
68
69$(function() {
70  var $domain_hint_div;
71  $('input[type=email]').on('change', function() {
72    var $email_input = $(this);
73    var suggested_domains = $(this).data('suggested-domains').split(':');
74    var val = $email_input.val();
75    var val_domain = val.split('@')[1];
76    var highest_ratio = 0;
77    var suggestion = null;
78    if (typeof val_domain !== 'undefined') {
79      for (var i=0; i < suggested_domains.length; i++) {
80        var domain = suggested_domains[i];
81        var ratio = val_domain.similarity(domain);
82        if (ratio > highest_ratio) {
83          highest_ratio = ratio;
84          suggestion = domain;
85        }
86      }
87    }
88    if (highest_ratio > 0.80 && highest_ratio < 1) {
89      $domain_hint_div = $('div.field-live-hint')
90      $domain_hint_div.find('button.action').on('click', function() {
91        $email_input.val($email_input.val().replace(/@.*/, '@' + $(this).data('suggestion')));
92        $email_input.trigger('change');
93        $domain_hint_div.hide();
94        return false;
95      });
96
97      $domain_hint_div.find('button.close').on('click', function() {
98        $domain_hint_div.hide();
99        return false;
100      });
101      $domain_hint_div.find('> p').text($domain_hint_div.find('> p').data('hint-prefix') + ' @' + suggestion + ' ?');
102      $domain_hint_div.find('button.action').data('suggestion', suggestion);
103      $domain_hint_div.show();
104    } else if ($domain_hint_div) {
105      $domain_hint_div.hide();
106    }
107  });
108})