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var _ = require('lodash');
var SIZE_PADDING = 2;
/**
* Utility for calculating query result size
* incorporating padding for dedupe process
*/
function setup() {
return function setQuerySize(req, res, next) {
if (_.isUndefined(req.clean) || _.isUndefined(req.clean.size)) {
return next();
}
req.clean.querySize = calculateSize(req.clean.size);
next();
};
}
/**
* Add padding or set to 1
*
* @param {number} cleanSize
* @returns {number}
*/
function calculateSize(cleanSize) {
switch (cleanSize || 1) {
case 1:
return 1;
default:
return cleanSize * SIZE_PADDING;
}
}
module.exports = setup;