/*!
 * typeahead.js 0.10.5
 * https://github.com/twitter/typeahead.js
 * Copyright 2013-2014 Twitter, Inc. and other contributors; Licensed MIT
 */

(function($) {
  var _ = (function() {
    'use strict';
    return {
      isMsie: function() {
        return /(msie|trident)/i.test(navigator.userAgent)
          ? navigator.userAgent.match(/(msie |rv:)(\d+(.\d+)?)/i)[2]
          : false;
      },
      isBlankString: function(str) {
        return !str || /^\s*$/.test(str);
      },
      escapeRegExChars: function(str) {
        return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
      },
      isString: function(obj) {
        return typeof obj === 'string';
      },
      isNumber: function(obj) {
        return typeof obj === 'number';
      },
      isArray: $.isArray,
      isFunction: $.isFunction,
      isObject: $.isPlainObject,
      isUndefined: function(obj) {
        return typeof obj === 'undefined';
      },
      toStr: function toStr(s) {
        return _.isUndefined(s) || s === null ? '' : s + '';
      },
      bind: $.proxy,
      each: function(collection, cb) {
        $.each(collection, reverseArgs);
        function reverseArgs(index, value) {
          return cb(value, index);
        }
      },
      map: $.map,
      filter: $.grep,
      every: function(obj, test) {
        var result = true;
        if (!obj) {
          return result;
        }
        $.each(obj, function(key, val) {
          if (!(result = test.call(null, val, key, obj))) {
            return false;
          }
        });
        return !!result;
      },
      some: function(obj, test) {
        var result = false;
        if (!obj) {
          return result;
        }
        $.each(obj, function(key, val) {
          if ((result = test.call(null, val, key, obj))) {
            return false;
          }
        });
        return !!result;
      },
      mixin: $.extend,
      getUniqueId: (function() {
        var counter = 0;
        return function() {
          return counter++;
        };
      })(),
      templatify: function templatify(obj) {
        return $.isFunction(obj) ? obj : template;
        function template() {
          return String(obj);
        }
      },
      defer: function(fn) {
        setTimeout(fn, 0);
      },
      debounce: function(func, wait, immediate) {
        var timeout, result;
        return function() {
          var context = this,
            args = arguments,
            later,
            callNow;
          later = function() {
            timeout = null;
            if (!immediate) {
              result = func.apply(context, args);
            }
          };
          callNow = immediate && !timeout;
          clearTimeout(timeout);
          timeout = setTimeout(later, wait);
          if (callNow) {
            result = func.apply(context, args);
          }
          return result;
        };
      },
      throttle: function(func, wait) {
        var context, args, timeout, result, previous, later;
        previous = 0;
        later = function() {
          previous = new Date();
          timeout = null;
          result = func.apply(context, args);
        };
        return function() {
          var now = new Date(),
            remaining = wait - (now - previous);
          context = this;
          args = arguments;
          if (remaining <= 0) {
            clearTimeout(timeout);
            timeout = null;
            previous = now;
            result = func.apply(context, args);
          } else if (!timeout) {
            timeout = setTimeout(later, remaining);
          }
          return result;
        };
      },
      noop: function() {},
    };
  })();
  var VERSION = '0.10.5';
  var tokenizers = (function() {
    'use strict';
    return {
      nonword: nonword,
      whitespace: whitespace,
      obj: {
        nonword: getObjTokenizer(nonword),
        whitespace: getObjTokenizer(whitespace),
      },
    };
    function whitespace(str) {
      str = _.toStr(str);
      return str ? str.split(/\s+/) : [];
    }
    function nonword(str) {
      str = _.toStr(str);
      return str ? str.split(/\W+/) : [];
    }
    function getObjTokenizer(tokenizer) {
      return function setKey() {
        var args = [].slice.call(arguments, 0);
        return function tokenize(o) {
          var tokens = [];
          _.each(args, function(k) {
            tokens = tokens.concat(tokenizer(_.toStr(o[k])));
          });
          return tokens;
        };
      };
    }
  })();
  var LruCache = (function() {
    'use strict';
    function LruCache(maxSize) {
      this.maxSize = _.isNumber(maxSize) ? maxSize : 100;
      this.reset();
      if (this.maxSize <= 0) {
        this.set = this.get = $.noop;
      }
    }
    _.mixin(LruCache.prototype, {
      set: function set(key, val) {
        var tailItem = this.list.tail,
          node;
        if (this.size >= this.maxSize) {
          this.list.remove(tailItem);
          delete this.hash[tailItem.key];
        }
        if ((node = this.hash[key])) {
          node.val = val;
          this.list.moveToFront(node);
        } else {
          node = new Node(key, val);
          this.list.add(node);
          this.hash[key] = node;
          this.size++;
        }
      },
      get: function get(key) {
        var node = this.hash[key];
        if (node) {
          this.list.moveToFront(node);
          return node.val;
        }
      },
      reset: function reset() {
        this.size = 0;
        this.hash = {};
        this.list = new List();
      },
    });
    function List() {
      this.head = this.tail = null;
    }
    _.mixin(List.prototype, {
      add: function add(node) {
        if (this.head) {
          node.next = this.head;
          this.head.prev = node;
        }
        this.head = node;
        this.tail = this.tail || node;
      },
      remove: function remove(node) {
        node.prev ? (node.prev.next = node.next) : (this.head = node.next);
        node.next ? (node.next.prev = node.prev) : (this.tail = node.prev);
      },
      moveToFront: function(node) {
        this.remove(node);
        this.add(node);
      },
    });
    function Node(key, val) {
      this.key = key;
      this.val = val;
      this.prev = this.next = null;
    }
    return LruCache;
  })();
  var PersistentStorage = (function() {
    'use strict';
    var ls, methods;
    try {
      ls = window.localStorage;
      ls.setItem('~~~', '!');
      ls.removeItem('~~~');
    } catch (err) {
      ls = null;
    }
    function PersistentStorage(namespace) {
      this.prefix = ['__', namespace, '__'].join('');
      this.ttlKey = '__ttl__';
      this.keyMatcher = new RegExp('^' + _.escapeRegExChars(this.prefix));
    }
    if (ls && window.JSON) {
      methods = {
        _prefix: function(key) {
          return this.prefix + key;
        },
        _ttlKey: function(key) {
          return this._prefix(key) + this.ttlKey;
        },
        get: function(key) {
          if (this.isExpired(key)) {
            this.remove(key);
          }
          return decode(ls.getItem(this._prefix(key)));
        },
        set: function(key, val, ttl) {
          if (_.isNumber(ttl)) {
            ls.setItem(this._ttlKey(key), encode(now() + ttl));
          } else {
            ls.removeItem(this._ttlKey(key));
          }
          return ls.setItem(this._prefix(key), encode(val));
        },
        remove: function(key) {
          ls.removeItem(this._ttlKey(key));
          ls.removeItem(this._prefix(key));
          return this;
        },
        clear: function() {
          var i,
            key,
            keys = [],
            len = ls.length;
          for (i = 0; i < len; i++) {
            if ((key = ls.key(i)).match(this.keyMatcher)) {
              keys.push(key.replace(this.keyMatcher, ''));
            }
          }
          for (i = keys.length; i--; ) {
            this.remove(keys[i]);
          }
          return this;
        },
        isExpired: function(key) {
          var ttl = decode(ls.getItem(this._ttlKey(key)));
          return _.isNumber(ttl) && now() > ttl ? true : false;
        },
      };
    } else {
      methods = {
        get: _.noop,
        set: _.noop,
        remove: _.noop,
        clear: _.noop,
        isExpired: _.noop,
      };
    }
    _.mixin(PersistentStorage.prototype, methods);
    return PersistentStorage;
    function now() {
      return new Date().getTime();
    }
    function encode(val) {
      return JSON.stringify(_.isUndefined(val) ? null : val);
    }
    function decode(val) {
      return JSON.parse(val);
    }
  })();
  var Transport = (function() {
    'use strict';
    var pendingRequestsCount = 0,
      pendingRequests = {},
      maxPendingRequests = 6,
      sharedCache = new LruCache(10);
    function Transport(o) {
      o = o || {};
      this.cancelled = false;
      this.lastUrl = null;
      this._send = o.transport ? callbackToDeferred(o.transport) : $.ajax;
      this._get = o.rateLimiter ? o.rateLimiter(this._get) : this._get;
      this._cache = o.cache === false ? new LruCache(0) : sharedCache;
    }
    Transport.setMaxPendingRequests = function setMaxPendingRequests(num) {
      maxPendingRequests = num;
    };
    Transport.resetCache = function resetCache() {
      sharedCache.reset();
    };
    _.mixin(Transport.prototype, {
      _get: function(url, o, cb) {
        var that = this,
          jqXhr;
        if (this.cancelled || url !== this.lastUrl) {
          return;
        }
        if ((jqXhr = pendingRequests[url])) {
          jqXhr.done(done).fail(fail);
        } else if (pendingRequestsCount < maxPendingRequests) {
          pendingRequestsCount++;
          pendingRequests[url] = this._send(url, o)
            .done(done)
            .fail(fail)
            .always(always);
        } else {
          this.onDeckRequestArgs = [].slice.call(arguments, 0);
        }
        function done(resp) {
          cb && cb(null, resp);
          that._cache.set(url, resp);
        }
        function fail() {
          cb && cb(true);
        }
        function always() {
          pendingRequestsCount--;
          delete pendingRequests[url];
          if (that.onDeckRequestArgs) {
            that._get.apply(that, that.onDeckRequestArgs);
            that.onDeckRequestArgs = null;
          }
        }
      },
      get: function(url, o, cb) {
        var resp;
        if (_.isFunction(o)) {
          cb = o;
          o = {};
        }
        this.cancelled = false;
        this.lastUrl = url;
        if ((resp = this._cache.get(url))) {
          _.defer(function() {
            cb && cb(null, resp);
          });
        } else {
          this._get(url, o, cb);
        }
        return !!resp;
      },
      cancel: function() {
        this.cancelled = true;
      },
    });
    return Transport;
    function callbackToDeferred(fn) {
      return function customSendWrapper(url, o) {
        var deferred = $.Deferred();
        fn(url, o, onSuccess, onError);
        return deferred;
        function onSuccess(resp) {
          _.defer(function() {
            deferred.resolve(resp);
          });
        }
        function onError(err) {
          _.defer(function() {
            deferred.reject(err);
          });
        }
      };
    }
  })();
  var SearchIndex = (function() {
    'use strict';
    function SearchIndex(o) {
      o = o || {};
      if (!o.datumTokenizer || !o.queryTokenizer) {
        $.error('datumTokenizer and queryTokenizer are both required');
      }
      this.datumTokenizer = o.datumTokenizer;
      this.queryTokenizer = o.queryTokenizer;
      this.reset();
    }
    _.mixin(SearchIndex.prototype, {
      bootstrap: function bootstrap(o) {
        this.datums = o.datums;
        this.trie = o.trie;
      },
      add: function(data) {
        var that = this;
        data = _.isArray(data) ? data : [data];
        _.each(data, function(datum) {
          var id, tokens;
          id = that.datums.push(datum) - 1;
          tokens = normalizeTokens(that.datumTokenizer(datum));
          _.each(tokens, function(token) {
            var node, chars, ch;
            node = that.trie;
            chars = token.split('');
            while ((ch = chars.shift())) {
              node = node.children[ch] || (node.children[ch] = newNode());
              node.ids.push(id);
            }
          });
        });
      },
      get: function get(query) {
        var that = this,
          tokens,
          matches;
        tokens = normalizeTokens(this.queryTokenizer(query));
        _.each(tokens, function(token) {
          var node, chars, ch, ids;
          if (matches && matches.length === 0) {
            return false;
          }
          node = that.trie;
          chars = token.split('');
          while (node && (ch = chars.shift())) {
            node = node.children[ch];
          }
          if (node && chars.length === 0) {
            ids = node.ids.slice(0);
            matches = matches ? getIntersection(matches, ids) : ids;
          } else {
            matches = [];
            return false;
          }
        });
        return matches
          ? _.map(unique(matches), function(id) {
              return that.datums[id];
            })
          : [];
      },
      reset: function reset() {
        this.datums = [];
        this.trie = newNode();
      },
      serialize: function serialize() {
        return {
          datums: this.datums,
          trie: this.trie,
        };
      },
    });
    return SearchIndex;
    function normalizeTokens(tokens) {
      tokens = _.filter(tokens, function(token) {
        return !!token;
      });
      tokens = _.map(tokens, function(token) {
        return token.toLowerCase();
      });
      return tokens;
    }
    function newNode() {
      return {
        ids: [],
        children: {},
      };
    }
    function unique(array) {
      var seen = {},
        uniques = [];
      for (var i = 0, len = array.length; i < len; i++) {
        if (!seen[array[i]]) {
          seen[array[i]] = true;
          uniques.push(array[i]);
        }
      }
      return uniques;
    }
    function getIntersection(arrayA, arrayB) {
      var ai = 0,
        bi = 0,
        intersection = [];
      arrayA = arrayA.sort(compare);
      arrayB = arrayB.sort(compare);
      var lenArrayA = arrayA.length,
        lenArrayB = arrayB.length;
      while (ai < lenArrayA && bi < lenArrayB) {
        if (arrayA[ai] < arrayB[bi]) {
          ai++;
        } else if (arrayA[ai] > arrayB[bi]) {
          bi++;
        } else {
          intersection.push(arrayA[ai]);
          ai++;
          bi++;
        }
      }
      return intersection;
      function compare(a, b) {
        return a - b;
      }
    }
  })();
  var oParser = (function() {
    'use strict';
    return {
      local: getLocal,
      prefetch: getPrefetch,
      remote: getRemote,
    };
    function getLocal(o) {
      return o.local || null;
    }
    function getPrefetch(o) {
      var prefetch, defaults;
      defaults = {
        url: null,
        thumbprint: '',
        ttl: 24 * 60 * 60 * 1e3,
        filter: null,
        ajax: {},
      };
      if ((prefetch = o.prefetch || null)) {
        prefetch = _.isString(prefetch)
          ? {
              url: prefetch,
            }
          : prefetch;
        prefetch = _.mixin(defaults, prefetch);
        prefetch.thumbprint = VERSION + prefetch.thumbprint;
        prefetch.ajax.type = prefetch.ajax.type || 'GET';
        prefetch.ajax.dataType = prefetch.ajax.dataType || 'json';
        !prefetch.url && $.error('prefetch requires url to be set');
      }
      return prefetch;
    }
    function getRemote(o) {
      var remote, defaults;
      defaults = {
        url: null,
        cache: true,
        wildcard: '%QUERY',
        replace: null,
        rateLimitBy: 'debounce',
        rateLimitWait: 300,
        send: null,
        filter: null,
        ajax: {},
      };
      if ((remote = o.remote || null)) {
        remote = _.isString(remote)
          ? {
              url: remote,
            }
          : remote;
        remote = _.mixin(defaults, remote);
        remote.rateLimiter = /^throttle$/i.test(remote.rateLimitBy)
          ? byThrottle(remote.rateLimitWait)
          : byDebounce(remote.rateLimitWait);
        remote.ajax.type = remote.ajax.type || 'GET';
        remote.ajax.dataType = remote.ajax.dataType || 'json';
        delete remote.rateLimitBy;
        delete remote.rateLimitWait;
        !remote.url && $.error('remote requires url to be set');
      }
      return remote;
      function byDebounce(wait) {
        return function(fn) {
          return _.debounce(fn, wait);
        };
      }
      function byThrottle(wait) {
        return function(fn) {
          return _.throttle(fn, wait);
        };
      }
    }
  })();
  (function(root) {
    'use strict';
    var old, keys;
    old = root.Bloodhound;
    keys = {
      data: 'data',
      protocol: 'protocol',
      thumbprint: 'thumbprint',
    };
    root.Bloodhound = Bloodhound;
    function Bloodhound(o) {
      if (!o || (!o.local && !o.prefetch && !o.remote)) {
        $.error('one of local, prefetch, or remote is required');
      }
      this.limit = o.limit || 5;
      this.sorter = getSorter(o.sorter);
      this.dupDetector = o.dupDetector || ignoreDuplicates;
      this.local = oParser.local(o);
      this.prefetch = oParser.prefetch(o);
      this.remote = oParser.remote(o);
      this.cacheKey = this.prefetch
        ? this.prefetch.cacheKey || this.prefetch.url
        : null;
      this.index = new SearchIndex({
        datumTokenizer: o.datumTokenizer,
        queryTokenizer: o.queryTokenizer,
      });
      this.storage = this.cacheKey
        ? new PersistentStorage(this.cacheKey)
        : null;
    }
    Bloodhound.noConflict = function noConflict() {
      root.Bloodhound = old;
      return Bloodhound;
    };
    Bloodhound.tokenizers = tokenizers;
    _.mixin(Bloodhound.prototype, {
      _loadPrefetch: function loadPrefetch(o) {
        var that = this,
          serialized,
          deferred;
        if ((serialized = this._readFromStorage(o.thumbprint))) {
          this.index.bootstrap(serialized);
          deferred = $.Deferred().resolve();
        } else {
          deferred = $.ajax(o.url, o.ajax).done(handlePrefetchResponse);
        }
        return deferred;
        function handlePrefetchResponse(resp) {
          that.clear();
          that.add(o.filter ? o.filter(resp) : resp);
          that._saveToStorage(that.index.serialize(), o.thumbprint, o.ttl);
        }
      },
      _getFromRemote: function getFromRemote(query, cb) {
        var that = this,
          url,
          uriEncodedQuery;
        if (!this.transport) {
          return;
        }
        query = query || '';
        uriEncodedQuery = encodeURIComponent(query);
        url = this.remote.replace
          ? this.remote.replace(this.remote.url, query)
          : this.remote.url.replace(this.remote.wildcard, uriEncodedQuery);
        return this.transport.get(url, this.remote.ajax, handleRemoteResponse);
        function handleRemoteResponse(err, resp) {
          err
            ? cb([])
            : cb(that.remote.filter ? that.remote.filter(resp) : resp);
        }
      },
      _cancelLastRemoteRequest: function cancelLastRemoteRequest() {
        this.transport && this.transport.cancel();
      },
      _saveToStorage: function saveToStorage(data, thumbprint, ttl) {
        if (this.storage) {
          this.storage.set(keys.data, data, ttl);
          this.storage.set(keys.protocol, location.protocol, ttl);
          this.storage.set(keys.thumbprint, thumbprint, ttl);
        }
      },
      _readFromStorage: function readFromStorage(thumbprint) {
        var stored = {},
          isExpired;
        if (this.storage) {
          stored.data = this.storage.get(keys.data);
          stored.protocol = this.storage.get(keys.protocol);
          stored.thumbprint = this.storage.get(keys.thumbprint);
        }
        isExpired =
          stored.thumbprint !== thumbprint ||
          stored.protocol !== location.protocol;
        return stored.data && !isExpired ? stored.data : null;
      },
      _initialize: function initialize() {
        var that = this,
          local = this.local,
          deferred;
        deferred = this.prefetch
          ? this._loadPrefetch(this.prefetch)
          : $.Deferred().resolve();
        local && deferred.done(addLocalToIndex);
        this.transport = this.remote ? new Transport(this.remote) : null;
        return (this.initPromise = deferred.promise());
        function addLocalToIndex() {
          that.add(_.isFunction(local) ? local() : local);
        }
      },
      initialize: function initialize(force) {
        return !this.initPromise || force
          ? this._initialize()
          : this.initPromise;
      },
      add: function add(data) {
        this.index.add(data);
      },
      get: function get(query, cb) {
        var that = this,
          matches = [],
          cacheHit = false;
        matches = this.index.get(query);
        matches = this.sorter(matches).slice(0, this.limit);
        matches.length < this.limit
          ? (cacheHit = this._getFromRemote(query, returnRemoteMatches))
          : this._cancelLastRemoteRequest();
        if (!cacheHit) {
          (matches.length > 0 || !this.transport) && cb && cb(matches);
        }
        function returnRemoteMatches(remoteMatches) {
          var matchesWithBackfill = matches.slice(0);
          _.each(remoteMatches, function(remoteMatch) {
            var isDuplicate;
            isDuplicate = _.some(matchesWithBackfill, function(match) {
              return that.dupDetector(remoteMatch, match);
            });
            !isDuplicate && matchesWithBackfill.push(remoteMatch);
            return matchesWithBackfill.length < that.limit;
          });
          cb && cb(that.sorter(matchesWithBackfill));
        }
      },
      clear: function clear() {
        this.index.reset();
      },
      clearPrefetchCache: function clearPrefetchCache() {
        this.storage && this.storage.clear();
      },
      clearRemoteCache: function clearRemoteCache() {
        this.transport && Transport.resetCache();
      },
      ttAdapter: function ttAdapter() {
        return _.bind(this.get, this);
      },
    });
    return Bloodhound;
    function getSorter(sortFn) {
      return _.isFunction(sortFn) ? sort : noSort;
      function sort(array) {
        return array.sort(sortFn);
      }
      function noSort(array) {
        return array;
      }
    }
    function ignoreDuplicates() {
      return false;
    }
  })(this);
})(window.jQuery);
