Fix Extra Records on Post SailsJS Policy

'use strict';

/**
 * Policy to fix data records coming in from Angular via "Record"
 * We pass any relational data into a relational key and delete the previous key to prevent Waterline from Updating It.
 * We set any key that has a property of id, to that id
 * We delete the id, since we should be passing it in via REST
 * We delete createdBy, updatedBy, createdAt, and updatedAt
 * Note, to use the addDataCreate and addDataUpdate, it must come AFTER this function.
 *
 * @param   {Request}   request     Request object
 * @param   {Response}  response    Response object
 * @param   {Function}  next        Callback function
 */
module.exports = function(request, response, next) {
    sails.log.verbose(' POLICY - ' + __filename + ':' + __line);
        if(_.has(request.body, 'record')){
            request.body.record = fix(request.body.record);
            // Remove Extras.
            var itemsToRemove = [
                'id',
                'createdBy',
                'updatedBy',
                'createdAt',
                'updatedAt'
            ];
             if(_.has(request.body, 'record')){
                _.each(itemsToRemove, function(item) {
                    if( _.has(request.body.record, item)) delete request.body.record[item];
                });
            }
            console.log(request.body.record);
        }

        sails.log.verbose('     OK');

        next();
};

function fix(record){
    if(!record) return;
    var relational = {};
    _.each(record, function(item, key) {
        // Fix One to One and push back the ID.
        if( _.has(item, 'id') && item.id) {
            record[key] = item.id;
        }
        // Fix Many to Many and Push it into a Relational Key
        if( _.isArray(item) || _.isObject(item) ) {
            relational[key] = _.cloneDeep(item);
            delete record[key];
        }
    });
    record.relational = relational;
    if(!_.isEmpty(record.relational)) return record;
    fix(record.relational);
}