Private/Approve-Install.ps1
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function Approve-Install { # Decides whether a first-time install may proceed. Approval comes from # -AllowInstall, or from asking; the answer is remembered for the rest of the # run so a component is never asked about twice. [CmdletBinding()] [OutputType([bool])] param( [Parameter(Mandatory)][string] $Component, [Parameter(Mandatory)][string] $Description, # The caller's -AllowInstall list. [string[]] $Approved = @() ) if ($Approved -contains 'All' -or $Approved -contains $Component) { return $true } if ($null -eq $script:InstallDecision) { $script:InstallDecision = @{} } if ($script:InstallDecision.ContainsKey($Component)) { return $script:InstallDecision[$Component] } if (-not (Test-CanPrompt)) { # A scheduled run has nobody to ask, and silently installing software on # a machine nobody is watching is exactly what this gate exists to stop. Write-Warning "$Component is not installed, and this run cannot prompt for consent. Re-run with -AllowInstall $Component (or -AllowInstall All) to permit it." $script:InstallDecision[$Component] = $false return $false } $granted = Request-InstallConsent -Component $Component -Description $Description $script:InstallDecision[$Component] = $granted if (-not $granted) { Write-Warning "Declined to install $Component. The step that needs it will be skipped." } return $granted } |