api/controller/search.js

var backend = require('../src/backend');

function controller( req, res, next ){
  var required_query = req.required_query ? req.required_query : 'search';
  var query = require('../query/' + required_query);
  
  // backend command
  var cmd = {
    index: 'pelias',
    body: query( req.clean )
  };

  // query backend
  backend().client.search( cmd, function( err, data ){

    var docs = [];

    // handle backend errors
    if( err ){ return next( err ); }

    if( data && data.hits && data.hits.total){
      docs = data.hits.hits.map( function( hit ){
        return hit._source;
      });
    }

    // respond
    return res.status(200).json({
      date: new Date().getTime(),
      body: docs
    });
  });

}

module.exports = controller;