/*!
 * Pattern Finder
 *
 * Copyright (c) 2014 Dave Olsen, http://dmolsen.com
 * Licensed under the MIT license
 *
 */

var patternFinder = {

  data:   [],
  active: false,

  init: function() {

    for (var patternType in patternPaths) {
      if (patternPaths.hasOwnProperty(patternType)) {
        for (var pattern in patternPaths[patternType]) {
          var obj = {};
          obj.patternPartial = patternType+"-"+pattern;
          obj.patternPath    = patternPaths[patternType][pattern];
          this.data.push(obj);
        }
      }
    }

    // instantiate the bloodhound suggestion engine
    var patterns = new Bloodhound({
      datumTokenizer: function(d) { return Bloodhound.tokenizers.nonword(d.patternPartial); },
      queryTokenizer: Bloodhound.tokenizers.nonword,
      limit: 10,
      local: this.data
    });

    // initialize the bloodhound suggestion engine
    patterns.initialize();

    $('#sg-find .typeahead').typeahead({ highlight: true }, {
      displayKey: 'patternPartial',
      source: patterns.ttAdapter()
    }).on('typeahead:selected', patternFinder.onAutocompleted).on('typeahead:autocompleted', patternFinder.onSelected);

  },

  passPath: function(item) {
    // update the iframe via the history api handler
    patternFinder.closeFinder();
    var obj = JSON.stringify({ "path": urlHandler.getFileName(item.patternPartial) });
    document.getElementById("sg-viewport").contentWindow.postMessage(JSON.parse(obj), urlHandler.targetOrigin);
  },

  onSelected: function(e,item) {
    patternFinder.passPath(item);
  },

  onAutocompleted: function(e,item) {
    patternFinder.passPath(item);
  },

  toggleFinder: function() {
    if (!patternFinder.active) {
      patternFinder.openFinder();
    } else {
      patternFinder.closeFinder();
    }
  },

  openFinder: function() {
    patternFinder.active = true;
    $('#sg-find .typeahead').val("");
    $("#sg-find").addClass('show-overflow');
    $('#sg-find .typeahead').focus();
  },

  closeFinder: function() {
    patternFinder.active = false;
    $("#sg-find").removeClass('show-overflow');
    $('.sg-acc-handle, .sg-acc-panel').removeClass('active');
    $('#sg-find .typeahead').val("");
  },

  receiveIframeMessage: function(event) {

    var data = (typeof event.data !== "string") ? event.data : JSON.parse(event.data);

    // does the origin sending the message match the current host? if not dev/null the request
    if ((window.location.protocol !== "file:") && (event.origin !== window.location.protocol+"//"+window.location.host)) {
      return;
    }

    if (data.keyPress !== undefined) {
      if (data.keyPress == 'ctrl+shift+f') {
        patternFinder.toggleFinder();
        return false;
      }
    }

  }

}

patternFinder.init();

window.addEventListener("message", patternFinder.receiveIframeMessage, false);

$('#sg-find .typeahead').focus(function() {
  if (!patternFinder.active) {
    patternFinder.openFinder();
  }
});

$('#sg-find .typeahead').blur(function() {
  patternFinder.closeFinder();
});