var substringMatcher = function(strs) {
  return function findMatches(q, cb) {
    var matches, substringRegex;

    // an array that will be populated with substring matches
    matches = [];

    // regex used to determine if a string contains the substring `q`
    substrRegex = new RegExp(q, 'i');

    // iterate through the pool of strings and for any string that
    // contains the substring `q`, add it to the `matches` array
    $.each(strs, function(i, str) {
      if (substrRegex.test(str)) {
        matches.push(str);
      }
    });

    cb(matches);
  };
};

var states = ["Andorra","United Arab Emirates","Afghanistan","Antigua and Barbuda","Anguilla","Albania","Armenia","Angola","Antarctica","Argentina","American Samoa","Austria","Australia","Aruba","Åland","Azerbaijan","Bosnia and Herzegovina","Barbados","Bangladesh","Belgium","Burkina Faso","Bulgaria","Bahrain","Burundi","Benin","Saint Barthélemy","Bermuda","Brunei","Bolivia","Bonaire","Brazil","Bahamas","Bhutan","Bouvet Island","Botswana","Belarus","Belize","Canada","Cocos [Keeling] Islands","Congo","Central African Republic","Republic of the Congo","Switzerland","Ivory Coast","Cook Islands","Chile","Cameroon","China","Colombia","Costa Rica","Cuba","Cape Verde","Curacao","Christmas Island","Cyprus","Czechia","Germany","Djibouti","Denmark","Dominica","Dominican Republic","Algeria","Ecuador","Estonia","Egypt","Western Sahara","Eritrea","Spain","Ethiopia","Finland","Fiji","Falkland Islands","Micronesia","Faroe Islands","France","Gabon","United Kingdom","Grenada","Georgia","French Guiana","Guernsey","Ghana","Gibraltar","Greenland","Gambia","Guinea","Guadeloupe","Equatorial Guinea","Greece","South Georgia and the South Sandwich Islands","Guatemala","Guam","Guinea-Bissau","Guyana","Hong Kong","Heard Island and McDonald Islands","Honduras","Croatia","Haiti","Hungary","Indonesia","Ireland","Israel","Isle of Man","India","British Indian Ocean Territory","Iraq","Iran","Iceland","Italy","Jersey","Jamaica","Jordan","Japan","Kenya","Kyrgyzstan","Cambodia","Kiribati","Comoros","Saint Kitts and Nevis","North Korea","South Korea","Kuwait","Cayman Islands","Kazakhstan","Laos","Lebanon","Saint Lucia","Liechtenstein","Sri Lanka","Liberia","Lesotho","Lithuania","Luxembourg","Latvia","Libya","Morocco","Monaco","Moldova","Montenegro","Saint Martin","Madagascar","Marshall Islands","Macedonia","Mali","Myanmar [Burma]","Mongolia","Macao","Northern Mariana Islands","Martinique","Mauritania","Montserrat","Malta","Mauritius","Maldives","Malawi","Mexico","Malaysia","Mozambique","Namibia","New Caledonia","Niger","Norfolk Island","Nigeria","Nicaragua","Netherlands","Norway","Nepal","Nauru","Niue","New Zealand","Oman","Panama","Peru","French Polynesia","Papua New Guinea","Philippines","Pakistan","Poland","Saint Pierre and Miquelon","Pitcairn Islands","Puerto Rico","Palestine","Portugal","Palau","Paraguay","Qatar","Réunion","Romania","Serbia","Russia","Rwanda","Saudi Arabia","Solomon Islands","Seychelles","Sudan","Sweden","Singapore","Saint Helena","Slovenia","Svalbard and Jan Mayen","Slovakia","Sierra Leone","San Marino","Senegal","Somalia","Suriname","South Sudan","São Tomé and Príncipe","El Salvador","Sint Maarten","Syria","Swaziland","Turks and Caicos Islands","Chad","French Southern Territories","Togo","Thailand","Tajikistan","Tokelau","East Timor","Turkmenistan","Tunisia","Tonga","Turkey","Trinidad and Tobago","Tuvalu","Taiwan","Tanzania","Ukraine","Uganda","U.S. Minor Outlying Islands","United States","Uruguay","Uzbekistan","Vatican City","Saint Vincent and the Grenadines","Venezuela","British Virgin Islands","U.S. Virgin Islands","Vietnam","Vanuatu","Wallis and Futuna","Samoa","Kosovo","Yemen","Mayotte","South Africa","Zambia","Zimbabwe"];;


$('#the-basics .typeahead').typeahead({
  hint: true,
  highlight: true,
  minLength: 1
},
{
  name: 'states',
  source: substringMatcher(states)
});

// ---------- Bloodhound ----------

// constructs the suggestion engine
var states = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.whitespace,
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  // `states` is an array of state names defined in "The Basics"
  local: states
});

$('#bloodhound .typeahead').typeahead({
  hint: true,
  highlight: true,
  minLength: 1
},
{
  name: 'states',
  source: states
});


// -------- Prefatch --------

var countries = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.whitespace,
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  // url points to a json file that contains an array of country names, see
  // https://github.com/twitter/typeahead.js/blob/gh-pages/data/countries.json
  prefetch: '../plugins/bower_components/typeahead.js-master/countries.json'
});

// passing in `null` for the `options` arguments will result in the default
// options being used
$('#prefetch .typeahead').typeahead(null, {
  name: 'countries',
  source: countries
});

// -------- Custom --------

var nflTeams = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.obj.whitespace('team'),
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  identify: function(obj) { return obj.team; },
  prefetch: '../plugins/bower_components/typeahead.js-master/nfl.json'
});

function nflTeamsWithDefaults(q, sync) {
  if (q === '') {
    sync(nflTeams.get('Detroit Lions', 'Green Bay Packers', 'Chicago Bears'));
  }

  else {
    nflTeams.search(q, sync);
  }
}

$('#default-suggestions .typeahead').typeahead({
  minLength: 0,
  highlight: true
},
{
  name: 'nfl-teams',
  display: 'team',
  source: nflTeamsWithDefaults
});

// -------- Multiple --------

var nbaTeams = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.obj.whitespace('team'),
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  prefetch: '../plugins/bower_components/typeahead.js-master/nba.json'
});

var nhlTeams = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.obj.whitespace('team'),
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  prefetch: '../plugins/bower_components/typeahead.js-master/nhl.json'
});

$('#multiple-datasets .typeahead').typeahead({
  highlight: true
},
{
  name: 'nba-teams',
  display: 'team',
  source: nbaTeams,
  templates: {
    header: '<h3 class="league-name">NBA Teams</h3>'
  }
},
{
  name: 'nhl-teams',
  display: 'team',
  source: nhlTeams,
  templates: {
    header: '<h3 class="league-name">NHL Teams</h3>'
  }
});
     
// -------- Scrollable --------



$('#scrollable-dropdown-menu .typeahead').typeahead(null, {
  name: 'states',
  limit: 10,
  source: states
});
