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import 'multer'
import { UploadFilesForCheck } from 'express'
import { sep } from 'path'
import validator from 'validator'
import { isShortUUID, shortToUUID } from '@shared/extra-utils'
function exists (value: any) {
return value !== undefined && value !== null
}
function isSafePath (p: string) {
return exists(p) &&
(p + '').split(sep).every(part => {
return [ '..' ].includes(part) === false
})
}
function isArray (value: any): value is any[] {
return Array.isArray(value)
}
function isNotEmptyIntArray (value: any) {
return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0
}
function isNotEmptyStringArray (value: any) {
return Array.isArray(value) && value.every(v => typeof v === 'string' && v.length !== 0) && value.length !== 0
}
function isArrayOf (value: any, validator: (value: any) => boolean) {
return isArray(value) && value.every(v => validator(v))
}
function isDateValid (value: string) {
return exists(value) && validator.isISO8601(value)
}
function isIdValid (value: string) {
return exists(value) && validator.isInt('' + value)
}
function isUUIDValid (value: string) {
return exists(value) && validator.isUUID('' + value, 4)
}
function areUUIDsValid (values: string[]) {
return isArray(values) && values.every(v => isUUIDValid(v))
}
function isIdOrUUIDValid (value: string) {
return isIdValid(value) || isUUIDValid(value)
}
function isBooleanValid (value: any) {
return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value))
}
function isIntOrNull (value: any) {
return value === null || validator.isInt('' + value)
}
// ---------------------------------------------------------------------------
function isFileValid (options: {
files: UploadFilesForCheck
maxSize: number | null
mimeTypeRegex: string | null
field?: string
optional?: boolean // Default false
}) {
const { files, mimeTypeRegex, field, maxSize, optional = false } = options
// Should have files
if (!files) return optional
const fileArray = isArray(files)
? files
: files[field]
if (!fileArray || !isArray(fileArray) || fileArray.length === 0) {
return optional
}
// The file exists
const file = fileArray[0]
if (!file?.originalname) return false
// Check size
if ((maxSize !== null) && file.size > maxSize) return false
if (mimeTypeRegex === null) return true
return checkMimetypeRegex(file.mimetype, mimeTypeRegex)
}
function checkMimetypeRegex (fileMimeType: string, mimeTypeRegex: string) {
return new RegExp(`^${mimeTypeRegex}$`, 'i').test(fileMimeType)
}
// ---------------------------------------------------------------------------
function toCompleteUUID (value: string) {
if (isShortUUID(value)) {
try {
return shortToUUID(value)
} catch {
return null
}
}
return value
}
function toCompleteUUIDs (values: string[]) {
return values.map(v => toCompleteUUID(v))
}
function toIntOrNull (value: string) {
const v = toValueOrNull(value)
if (v === null || v === undefined) return v
if (typeof v === 'number') return v
return validator.toInt('' + v)
}
function toBooleanOrNull (value: any) {
const v = toValueOrNull(value)
if (v === null || v === undefined) return v
if (typeof v === 'boolean') return v
return validator.toBoolean('' + v)
}
function toValueOrNull (value: string) {
if (value === 'null') return null
return value
}
function toIntArray (value: any) {
if (!value) return []
if (isArray(value) === false) return [ validator.toInt(value) ]
return value.map(v => validator.toInt(v))
}
// ---------------------------------------------------------------------------
export {
exists,
isArrayOf,
isNotEmptyIntArray,
isArray,
isIntOrNull,
isIdValid,
isSafePath,
isNotEmptyStringArray,
isUUIDValid,
toCompleteUUIDs,
toCompleteUUID,
isIdOrUUIDValid,
isDateValid,
toValueOrNull,
toBooleanOrNull,
isBooleanValid,
toIntOrNull,
areUUIDsValid,
toIntArray,
isFileValid,
checkMimetypeRegex
}
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