ValidateUpdatedModuleVersion.ps1

# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
[CmdletBinding()]
param(
 [Parameter()][ValidateNotNullOrEmpty()][string] $ModuleName,
 [Parameter()][ValidateNotNullOrEmpty()][string] $NextVersion,
 [Parameter()][string] $PSRepository="PSGallery",
 [int] $ModulePreviewNumber=-1
)
enum VersionState {
 Invalid
 Valid
 EqualToFeed
 NotOnFeed
}

# Module import.
Import-Module PackageManagement
Import-Module PowerShellGet

$AllowPreRelease=$true
if($ModulePreviewNumber-eq-1) {
$AllowPreRelease=$false
}
[VersionState]$ValidationState= [VersionState]::Invalid
# Get current published version from PS Gallery.
$PSGalleryModule=Find-Module-Name $ModuleName-Repository $PSRepository-ErrorAction Ignore -AllowPrerelease:$AllowPreRelease
if ($null-ne$PSGalleryModule ) {
Write-Warning$PSGalleryModule.Version
if($PSGalleryModule.Version-like'*preview*'){
$ValidationState= [VersionState]::Valid
return$ValidationState
 }
$PSGalleryVersion= [version]$PSGalleryVersion
$LocalVersion= [version]$NextVersion
# Local version is equal to PS Gallery version.
if ($LocalVersion-eq$PSGalleryVersion) {
$ValidationState= [VersionState]::EqualToFeed
 }
# Local version is greater than PS Gallery version.
elseif ($LocalVersion-gt$PSGalleryVersion) {
$ValidationState= [VersionState]::Valid
 }
}
else {
$ValidationState= [VersionState]::NotOnFeed
}

return$ValidationState