2 import { UploadFilesForCheck } from 'express'
3 import { sep } from 'path'
4 import validator from 'validator'
6 function exists (value: any) {
7 return value !== undefined && value !== null
10 function isSafePath (p: string) {
12 (p + '').split(sep).every(part => {
13 return [ '..' ].includes(part) === false
17 function isArray (value: any): value is any[] {
18 return Array.isArray(value)
21 function isNotEmptyIntArray (value: any) {
22 return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0
25 function isArrayOf (value: any, validator: (value: any) => boolean) {
26 return isArray(value) && value.every(v => validator(v))
29 function isDateValid (value: string) {
30 return exists(value) && validator.isISO8601(value)
33 function isIdValid (value: string) {
34 return exists(value) && validator.isInt('' + value)
37 function isUUIDValid (value: string) {
38 return exists(value) && validator.isUUID('' + value, 4)
41 function isIdOrUUIDValid (value: string) {
42 return isIdValid(value) || isUUIDValid(value)
45 function isBooleanValid (value: any) {
46 return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value))
49 function isIntOrNull (value: any) {
50 return value === null || validator.isInt('' + value)
53 function toIntOrNull (value: string) {
54 const v = toValueOrNull(value)
56 if (v === null || v === undefined) return v
57 if (typeof v === 'number') return v
59 return validator.toInt('' + v)
62 function toBooleanOrNull (value: any) {
63 const v = toValueOrNull(value)
65 if (v === null || v === undefined) return v
66 if (typeof v === 'boolean') return v
68 return validator.toBoolean('' + v)
71 function toValueOrNull (value: string) {
72 if (value === 'null') return null
77 function toArray (value: any) {
78 if (value && isArray(value) === false) return [ value ]
83 function toIntArray (value: any) {
85 if (isArray(value) === false) return [ validator.toInt(value) ]
87 return value.map(v => validator.toInt(v))
90 function isFileFieldValid (
91 files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[],
96 if (!files) return optional
97 if (isArray(files)) return optional
100 const fileArray = files[field]
101 if (!fileArray || fileArray.length === 0) {
105 // The file should exist
106 const file = fileArray[0]
107 if (!file || !file.originalname) return false
111 function isFileMimeTypeValid (
112 files: UploadFilesForCheck,
113 mimeTypeRegex: string,
118 if (!files) return optional
119 if (isArray(files)) return optional
121 // Should have a file
122 const fileArray = files[field]
123 if (!fileArray || fileArray.length === 0) {
127 // The file should exist
128 const file = fileArray[0]
129 if (!file || !file.originalname) return false
131 return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype)
134 function isFileValid (
135 files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[],
136 mimeTypeRegex: string,
138 maxSize: number | null,
142 if (!files) return optional
143 if (isArray(files)) return optional
145 // Should have a file
146 const fileArray = files[field]
147 if (!fileArray || fileArray.length === 0) {
151 // The file should exist
152 const file = fileArray[0]
153 if (!file || !file.originalname) return false
156 if ((maxSize !== null) && file.size > maxSize) return false
158 return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype)
161 // ---------------------------------------------------------------------------