public/Install-Package.ps1

# Installs packages based on the provided Fast Package Reference generated by Find-Package
function Install-Package {
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidOverwritingBuiltInCmdlets', '', Justification='Required by PackageManagement')]
    [CmdletBinding()]
    param (
        [Parameter(Mandatory=$true)]
        [ValidateNotNullOrEmpty()]
        [string]
        $FastPackageReference
    )

    Write-Debug -Message ($LocalizedData.ProviderDebugMessage -f ('Install-Package'))
    Write-Debug -Message ($LocalizedData.FastPackageReference -f $FastPackageReference)

    # If the fast package reference doesnt match the pattern we expect, throw an exception
    if ((-Not ($FastPackageReference -Match $script:FastReferenceRegex)) -Or (-Not ($Matches.name -And $Matches.version))) {
        ThrowError -ExceptionName "System.ArgumentException" `
            -ExceptionMessage ($LocalizedData.FailToInstall -f $FastPackageReference) `
            -ErrorId 'FailToInstall' `
            -ErrorCategory InvalidArgument
    }

    $shouldContinueQueryMessage = ($LocalizedData.InstallPackageQuery -f "Installing", $Matches.name)
    $shouldContinueCaption = $LocalizedData.InstallPackageCaption

    # If the user opts not to install the package, exit from the script
    if (-Not ((Get-PromptBypass) -Or $request.ShouldContinue($shouldContinueQueryMessage, $shouldContinueCaption))) {
        Write-Warning ($LocalizedData.NotInstalled -f $FastPackageReference)
        return
    }

    $WinGetParams = @{
        ID = $Matches.name
        Version = $Matches.version
        Source = $Matches.source
    }

    # Convert the PSCustomObject output from Cobalt into PackageManagement SWIDs, then validate what WinGet installed matched what we requested
    $swid = $(
        $result = Cobalt\Install-WinGetPackage @WinGetParams
        # If Cobalt didn't return anything, something went wrong and we need to throw our own exception
        if (-Not $result) {
            ThrowError -ExceptionName 'System.OperationCanceledException' `
            -ExceptionMessage $LocalizedData.WinGetFailure `
            -ErrorID 'JobFailure' `
            -ErrorCategory InvalidOperation `
        }
        ConvertTo-SoftwareIdentity -InputObject $result -Source $WinGetParams.Source
    ) | Where-Object {Test-PackageVersion -Package $_ -RequiredVersion $WinGetParams.version -ErrorAction SilentlyContinue}

    if (-Not $swid) {
        # Cobalt returned something, but not in the format we expected. Something is amiss.
        Write-Warning ($LocalizedData.UnexpectedWinGetResponse -f $FastPackageReference)
    }

    $swid
}