2 import 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 isIntOrNull (value: any) {
49 return value === null || validator.isInt('' + value)
52 function toIntOrNull (value: string) {
53 const v = toValueOrNull(value)
55 if (v === null || v === undefined) return v
56 if (typeof v === 'number') return v
58 return validator.toInt('' + v)
61 function toBooleanOrNull (value: any) {
62 const v = toValueOrNull(value)
64 if (v === null || v === undefined) return v
65 if (typeof v === 'boolean') return v
67 return validator.toBoolean('' + v)
70 function toValueOrNull (value: string) {
71 if (value === 'null') return null
76 function toArray (value: any) {
77 if (value && isArray(value) === false) return [ value ]
82 function toIntArray (value: any) {
84 if (isArray(value) === false) return [ validator.toInt(value) ]
86 return value.map(v => validator.toInt(v))
89 function isFileValid (
90 files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[],
91 mimeTypeRegex: string,
93 maxSize: number | null,
97 if (!files) return optional
98 if (isArray(files)) return optional
100 // Should have a file
101 const fileArray = files[field]
102 if (!fileArray || fileArray.length === 0) {
106 // The file should exist
107 const file = fileArray[0]
108 if (!file || !file.originalname) return false
111 if ((maxSize !== null) && file.size > maxSize) return false
113 return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype)
116 // ---------------------------------------------------------------------------