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/**
 * @globals CZRHSParams
 * Inspired by the GPLv3 work of Pippin Williamson and Zack Katz with the GF plugin
 * Adapted by Nicolas Guillaume
 * License: GPLv3
 */
var CZRHSParams = CZRHSParams || {};
var HS_Search;
jQuery( function($) {
    HS_Search = $.extend( CZRHSParams, {

searching: false,

/** Prevent new results from being shown by setting to true */
    cancelled: false,

has_searched: false,

count: 0,

query: '',

/** Hold the ms since the user stopped typing */
    timeout: null,

/** Search field container */
    wrap: $( '.frm_form_fields .helpscout-docs' ),

form: $( '.frm_form_fields .helpscout-docs' ).closest( '.frm-show-form' ),

field: $( '.frm_form_fields .helpscout-docs' ).find( 'input[type="text"]' ),

onclick : '',

keypress : '',

results: {},

performed_search : 0,

performed_search_list : [],

visited_doc_articles : [],

//when resolved => HS_Search.form.find('.go-next-step').show();
    has_searched_enough : ( function() {
        return $.Deferred( function() {
            var dfd = this,
                _resolveAfterDelay = function() {
                  _.delay( function() {
                      //if at least one search has been performed, resolve. If not, fire again
                      if ( HS_Search.performed_search > 0 ) {
                          dfd.resolve();
                      } else {
                          _resolveAfterDelay();
                      }
                  }, 20000 );
                };
            _resolveAfterDelay();
            return dfd.promise();
        });
    })(),

init: function () {
      HS_Search.form.find('.go-next-step').hide();

HS_Search.has_searched_enough.done( function() {
        HS_Search.form.find('.go-next-step').show();
      });

HS_Search.form
        .on( 'keypress', function(e) {

var code = e.which || e.keyCode;

if( ! HS_Search.field.is(':focus') ) {
            return;
          }

if( code == 13  && ! $( e.target ).is( 'textarea,input[type="submit"],input[type="button"]' ) ) {
            e.preventDefault();
            return false;
          }

});

HS_Search.wrap
        .append( '<div class="' + CZRHSParams.template.wrap_class + '" style="display:none;" />' );

//fire search on field change
      HS_Search.field
        .attr( 'autocomplete', 'off' )
        .on( 'keydown keyup change', HS_Search.search_changed );

//populate the visited doc list when clicking a doc link
      HS_Search.wrap.find( '.docs-search-wrap' ).on( 'click', '.docs-search-results .article', function( ev ) {
          var _docLinkEl = $(this).find('.article--open-original'),
              _docTitleEl = $(this).find('a[data-beacon-article]').first();
          if ( 1 == _docLinkEl.length && 1 == _docTitleEl.length && ! _.isEmpty( _docLinkEl.attr('href') ) && ! _.isEmpty( _docTitleEl.html() ) ) {
              HS_Search.visited_doc_articles.push( { title : _docTitleEl.html() , url : _docLinkEl.attr('href') } );
              var _cleanCollection = [];
              //remove duplicated
              _cleanCollection = _.uniq( HS_Search.visited_doc_articles, function( _link_ ) { return _link_.url; } );

HS_Search.wrap.trigger( 'new_doc_visited', { doc_links : _cleanCollection } );
          }
      });
    },

/**
     * Perform search on keyup
     * @param e
     */
    search_changed: function ( e ) {
      //skip cases when focus is lost, no key pressed, and there's already an not-empty search result printed
      if ( _.isUndefined( e.which ) && ! _.isEmpty( HS_Search.results ) )
        return;

var ignored_key_codes = [ 9, 13, 16, 17, 18, 20, 32, 33, 34, 37, 38, 91, 93 ];

if ( ignored_key_codes.indexOf( e.which ) > -1 ) {
        HS_Search.log( 'Ignored key press', e.which );
        return;
      }

HS_Search.log( 'Starting search countdown in %d ms', parseInt( CZRHSParams.searchDelay, 10 ) );

var $el = $( this ); // Used inside setTimout

// Clear the timeout if it has already been set.
      clearTimeout( HS_Search.timeout );

// Make a new timeout set to go off in HS_Search.searchDelay ms
      HS_Search.timeout = setTimeout( function () {

HS_Search.log( 'Performing search', e.which );

HS_Search.query = $el.val();

// Deleted, empty search box
        if ( HS_Search.query.length < CZRHSParams.minLength || ( 8 === e.which || 46 === e.which ) && HS_Search.query.length === 0 ) {
          HS_Search.cancelled = true; // Prevent new results from being shown
          HS_Search.set_results( {} );
          return;
        }

// Check whether a search is being performed. If not, start one.
        if ( !HS_Search.searching ) {
          // Reset the results array
          HS_Search.perform_search();
        }

}, parseInt( CZRHSParams.searchDelay, 10 ) );
    },

/**
     * Reset results and fetch a new batch using fetch_results
     */
    perform_search: function () {

// Reset results
      HS_Search.results = {};
      HS_Search.cancelled = false;

HS_Search.fetch_results();
      HS_Search.performed_search++;

//add search to history
      //only create a new entry if the new one doesn't start with the previous one and vice versa
      //else, update the last entry created
      var _lastSearch = _.isEmpty( HS_Search.performed_search_list ) ? '' : _.last( HS_Search.performed_search_list ),
          _isLastEntryUpdate = false;
      //ancienne recherche améliorée
      if ( ! _.isEmpty( _lastSearch ) ) {
          if ( _lastSearch.length < HS_Search.query.length ) {
              _isLastEntryUpdate = HS_Search.query.substr( 0, _lastSearch.length ) == _lastSearch;
          } //ancienne recherche diminuée
          else {
              _isLastEntryUpdate = _lastSearch.substr( 0, HS_Search.query.length ) == HS_Search.query;
          }
      }
      if ( _isLastEntryUpdate ) {
          HS_Search.performed_search_list.pop();
      }

HS_Search.performed_search_list.push( HS_Search.query );
      HS_Search.wrap.trigger( 'new_search_performed', { searches : HS_Search.performed_search_list } );
    },

/**
     * Alias for console.log, but check if debug is enabled.
     * @param item
     * @param item2
     */
    log: function ( item, item2 ) {
      if ( HS_Search.debug && console && console.log ) {
        console.log( item, item2 );
      }
    },

get_results_html: function () {

var output = '', count = 0;

if ( 'undefined' !== typeof( HS_Search.results.articles ) && HS_Search.results.articles.results.length ) {
          //show the next if there's a match
          HS_Search.form.find('.go-next-step').show();

output = CZRHSParams.template.before;

$.each( HS_Search.results.articles.results, function ( key, article ) {

// Default to true
            var keep = true;

// Make sure article is in the specified collection ID(s)
            if( CZRHSParams.collections.length > 0 ) {

// If we are searching within specific collections, we need to check the article's collection ID
              keep = false;

$.each( CZRHSParams.collections, function ( collection_key, value ) {

// Check to see if the article is in the collection
                var regex = new RegExp("^/docs/"  + value );

if( regex.exec( article.docsUrl ) ) {

// Collection ID of article matches whitelist, keep the article
                  keep = true;

}

} );

}

// Don't show more than the limit
            if ( count < HS_Search.limit && keep ) {

count++;
              output += HS_Search.get_article_html( article );

}

} );

output += CZRHSParams.template.after;
      } else {
          //if there's no match but the user performed already 4 searches, or HS_Search.has_searched_enough.state() == 'resolved' then show
          if ( 4 <= HS_Search.performed_search || 'resolved' == HS_Search.has_searched_enough.state() ) {
              HS_Search.form.find('.go-next-step').show();
          } else {
              HS_Search.form.find('.go-next-step').hide();
          }

}

return HS_Search.get_results_found( count ) + output;
    },

/**
     * Use localized CZRHSParams.item_template as html template for each article
     * @param article
     * @returns {string}
     */
    get_article_html: function ( article ) {

var output = CZRHSParams.template.item;

for ( var key in article ) {
        if ( article.hasOwnProperty( key ) ) {
          output = output.replace( RegExp( '{' + key + '}', "g" ), article[ key ] );
        }
      }

return output;
    },

get_results_found: function ( count ) {

var found_text = '';
      var css_class = 'results-found';

if ( HS_Search.query.length === 0 ) {
        found_text = CZRHSParams.text.enter_search;
        css_class += ' message-enter_search';
      } else if ( HS_Search.query.length < HS_Search.minLength ) {
        found_text = CZRHSParams.text.not_long_enough.replace( '{minLength}', HS_Search.minLength );
        css_class += ' message-minlength';
      } else if ( 0 === count ) {
        found_text = CZRHSParams.text.no_results_found;
        css_class += ' message-no_results';
      } else {
        found_text = ( count === 1 ) ? CZRHSParams.text.result_found : CZRHSParams.text.results_found;
        css_class += ' message-results';
      }

return CZRHSParams.template.results_found.replace( '{css_class}', css_class ).replace( '{text}', found_text ).replace( '{count}', count );
    },

/**
     * Set the results object and trigger re-generation of the HTML
     * @param results
     */
    set_results: function ( results ) {

HS_Search.log( 'Adding results:', results );

HS_Search.results = results;

HS_Search.wrap.find( '.docs-search-wrap' )
        .html( HS_Search.get_results_html() )
        .not(':visible').slideDown();
    },

/**
     * HelpScout doesn't support searching for exotic characters like brackets.
     *
     * @param query
     * @returns {*}
     */
    sanitize_query: function ( query ) {
      query = query.replace( /[\{\}\[\]]/g, ' ' );
      HS_Search.log( 'Searching for %s', query );
      return query;
    },

/**
     * Perform a search
     */
    fetch_results: function () {
      query = HS_Search.sanitize_query( HS_Search.query );

$search_wrap = HS_Search.wrap.find( '.docs-search-wrap' );

// Extensions
      $.ajax( {
        url: 'https://' + CZRHSParams._subdomain + '.helpscoutdocs.com/search/ajax?ref=support&query=' + encodeURIComponent( query ),
        async: true,
        dataType: 'json',
        beforeSend: function () {
          HS_Search.searching = true;
          $search_wrap.addClass('docs-searching');

// Show a spinner
          HS_Search.wrap.find( '.docs-search-wrap' )
            .show()
            .html( '<span class="gf-hs-spinner"></span>' );

$( 'body' ).trigger( 'gf_hs_search_started' );

},
        success: function ( results ) {
          if ( !HS_Search.cancelled ) {
            HS_Search.set_results( results );
            $( 'body' ).trigger( 'gf_hs_search_results_found' );
            HS_Search.has_searched = true;
          }
        },
        error: function ( e ) {
          HS_Search.log( 'Error: %s', e );
          $( 'body' ).trigger( 'gf_hs_search_error' );
        }
      } ).always( function () {
        HS_Search.searching = false;
        $search_wrap.removeClass('docs-searching');
      } );
    }
  } );

//HS_Search.init();

} );//jQuery( function($) {

jQuery( function($) {
  _.delay( function() {
      HS_Search.init();
  }, 300 );
} );