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import * as express from 'express'
import { pseudoRandomBytes } from 'crypto'
import { logger } from './logger'
function badRequest (req: express.Request, res: express.Response, next: express.NextFunction) {
res.type('json').status(400).end()
}
function generateRandomString (size: number, callback: (err: Error, randomString?: string) => void) {
pseudoRandomBytes(size, function (err, raw) {
if (err) return callback(err)
callback(null, raw.toString('hex'))
})
}
function createEmptyCallback () {
return function (err) {
if (err) logger.error('Error in empty callback.', { error: err })
}
}
interface FormatableToJSON {
toFormatedJSON()
}
function getFormatedObjects<U, T extends FormatableToJSON> (objects: T[], objectsTotal: number) {
const formatedObjects: U[] = []
objects.forEach(function (object) {
formatedObjects.push(object.toFormatedJSON())
})
return {
total: objectsTotal,
data: formatedObjects
}
}
// ---------------------------------------------------------------------------
export {
badRequest,
createEmptyCallback,
generateRandomString,
getFormatedObjects
}
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