+ return exists(value) && validator.matches(value, new RegExp(`^[a-z0-9._]{${min},${max}}$`))
+}
+
+function isUserDisplayNameValid (value: string) {
+ return value === null || (exists(value) && validator.isLength(value, CONSTRAINTS_FIELDS.USERS.NAME))
+}
+
+function isUserDescriptionValid (value: string) {
+ return value === null || (exists(value) && validator.isLength(value, CONSTRAINTS_FIELDS.USERS.DESCRIPTION))
+}
+
+function isUserEmailVerifiedValid (value: any) {
+ return isBooleanValid(value)
+}
+
+const nsfwPolicies = values(NSFW_POLICY_TYPES)
+function isUserNSFWPolicyValid (value: any) {
+ return exists(value) && nsfwPolicies.indexOf(value) !== -1
+}
+
+function isUserWebTorrentEnabledValid (value: any) {
+ return isBooleanValid(value)
+}
+
+function isUserVideosHistoryEnabledValid (value: any) {
+ return isBooleanValid(value)
+}
+
+function isUserAutoPlayVideoValid (value: any) {
+ return isBooleanValid(value)
+}
+
+function isUserVideoLanguages (value: any) {
+ return value === null || (isArray(value) && value.length < CONSTRAINTS_FIELDS.USERS.VIDEO_LANGUAGES.max)
+}
+
+function isUserAdminFlagsValid (value: any) {
+ return exists(value) && validator.isInt('' + value)
+}
+
+function isUserBlockedValid (value: any) {
+ return isBooleanValid(value)
+}
+
+function isUserBlockedReasonValid (value: any) {
+ return value === null || (exists(value) && validator.isLength(value, CONSTRAINTS_FIELDS.USERS.BLOCKED_REASON))
+}
+
+function isUserRoleValid (value: any) {
+ return exists(value) && validator.isInt('' + value) && UserRole[value] !== undefined