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var peliasQuery = require('pelias-query'),
searchDefaults = require('../search_defaults');
/**
This view (unfortunately) requires autocomplete to use the phrase.* index.
ideally we wouldn't need to use this, but at time of writing we are unable
to distinguish between 'complete tokens' and 'grams' in the name.* index.
this view was introduced in order to score exact matches higher than partial
matches, without it we find results such as "Clayton Avenue" appearing first
in the results list for the query "Clay Av".
the view uses some of the values from the 'search_defaults.js' file to add an
additional 'SHOULD' condition which scores exact matches slighly higher
than partial matches.
**/
module.exports = function( vs ){
// make a copy of the variables so we don't interfere with the values
// passed to other views.
var vsCopy = new peliasQuery.Vars( vs.export() );
// copy phrase:* values from search defaults
vsCopy.var('phrase:analyzer').set(searchDefaults['phrase:analyzer']);
vsCopy.var('phrase:field').set(searchDefaults['phrase:field']);
// get a copy of the *complete* tokens produced from the input:name
var tokens = vs.var('input:name:tokens_complete').get();
// no valid tokens to use, fail now, don't render this view.
if( !tokens || tokens.length < 1 ){ return null; }
// set 'input:name' to be only the fully completed characters
vsCopy.var('input:name').set( tokens.join(' ') );
return peliasQuery.view.phrase( vsCopy );
};