2 import * as validator from 'validator'
3 import { sep } from 'path'
5 function exists (value: any) {
6 return value !== undefined && value !== null
9 function isSafePath (p: string) {
11 (p + '').split(sep).every(part => {
12 return [ '..' ].includes(part) === false
16 function isArray (value: any) {
17 return Array.isArray(value)
20 function isNotEmptyIntArray (value: any) {
21 return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0
24 function isArrayOf (value: any, validator: (value: any) => boolean) {
25 return isArray(value) && value.every(v => validator(v))
28 function isDateValid (value: string) {
29 return exists(value) && validator.isISO8601(value)
32 function isIdValid (value: string) {
33 return exists(value) && validator.isInt('' + value)
36 function isUUIDValid (value: string) {
37 return exists(value) && validator.isUUID('' + value, 4)
40 function isIdOrUUIDValid (value: string) {
41 return isIdValid(value) || isUUIDValid(value)
44 function isBooleanValid (value: any) {
45 return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value))
48 function toIntOrNull (value: string) {
49 if (value === 'null') return null
51 return validator.toInt(value)
54 function toValueOrNull (value: string) {
55 if (value === 'null') return null
60 function toArray (value: any) {
61 if (value && isArray(value) === false) return [ value ]
66 function toIntArray (value: any) {
68 if (isArray(value) === false) return [ validator.toInt(value) ]
70 return value.map(v => validator.toInt(v))
73 function isFileValid (
74 files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[],
75 mimeTypeRegex: string,
77 maxSize: number | null,
81 if (!files) return optional
82 if (isArray(files)) return optional
85 const fileArray = files[ field ]
86 if (!fileArray || fileArray.length === 0) {
90 // The file should exist
91 const file = fileArray[ 0 ]
92 if (!file || !file.originalname) return false
95 if ((maxSize !== null) && file.size > maxSize) return false
97 return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype)
100 // ---------------------------------------------------------------------------