Test-LatestVersion.ps1
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<# .SYNOPSIS Test current PowerShell Core is the latest version. #> function Test-LatestVersion { [CmdletBinding()] param ( [Switch]$IncludePreRelease = $false, [string]$Token, [switch]$PassThru ) $specifiedToken = $Token if ([string]::IsNullOrEmpty($specifiedToken)) { $specifiedToken = GetPowerShellCoreApiTokenImpl } $release = Find-PowerShellCore -Latest -Token $specifiedToken -IncludePreRelease:$IncludePreRelease if ($null -eq $release) { Write-Error $Messages.Test_LatestVersion_001 return } if ($PSVersionTable.PSVersion -gt $release.Version) { # Note : This pattern occurs when using -IncludePreRelease parameter. WriteInfo ($Messages.Test_LatestVersion_002 -f $PSVersionTable.PSVersion, $release.Version) NotifyNewVersion -Published $release.Published -IncludePreRelease $IncludePreRelease if ($PassThru) { return [PSCustomObject]@{ Result = $true; Release = $release } } return } if ($PSVersionTable.PSVersion -eq $release.Version) { WriteInfo ($Messages.Test_LatestVersion_003 -f $PSVersionTable.PSVersion) NotifyNewVersion -Published $release.Published -IncludePreRelease $IncludePreRelease if ($PassThru) { return [PSCustomObject]@{ Result = $true; Release = $release } } return } Write-Warning ($Messages.Test_LatestVersion_004 -f $release.Version) if ($PassThru) { return [PSCustomObject]@{ Result = $false; Release = $release } } } function NotifyNewVersion ([datetime]$Published, [boolean]$IncludePreRelease) { # Note : Notify the new version releasing is coming. # * Stable Release : after a half year (180 days) # * PreRelease : after 3 weeks (21 days) $span = if ($IncludePreRelease) {[timespan]::new(21, 0, 0, 0)} else {[timespan]::new(180, 0, 0, 0)} $elapsed = (Get-Date).Subtract($Published) if ($elapsed -ge $span) { WriteInfo "" WriteInfo ($Messages.Test_LatestVersion_005 -f $elapsed.Days) WriteInfo $Messages.Test_LatestVersion_006 } } |