load-dependencies.ps1

try {
    $ModuleManifest = Test-ModuleManifest $PSScriptRoot\..\*.psd1
    Write-Verbose 'Unloading typedata'
    Get-Module $ModuleManifest.Name | % {
        $_.ExportedTypeFiles | % {
            Remove-TypeData -Path $_
        }
    }
    # for msi modules like VMware
    $ModuleManifest.RequiredModules | % {
        Import-Module -Name $_.Name -RequiredVersion $_.Version -ea Stop
    }
    @($ModuleManifest.PrivateData.RequiredPackages) -ne $null | % {
        $ProviderName,$PackageName,$Version,$Source = $_.CanonicalId.Split(':/#')
        $RequiredPackage = $_
        switch -Regex ($ProviderName) {
            'nuget' {
                #nuget:Microsoft.Exchange.WebServices/2.2#nuget.org
                $Destination = Join-Path $RequiredPackage.Destination "$PackageName.$Version"
                if (-not (Test-Path $Destination)) {
                    Write-Warning "Installing package $PackageName version $Version from source $Source"
                    # how to skip dependencies?
                    Install-Package -ProviderName $ProviderName -Name $PackageName -RequiredVersion $Version -Source $Source -Destination $RequiredPackage.Destination
                }
                Write-Verbose 'Loading assemblies'
                $RequiredPackage.RequiredAssemblies | % {
                    Add-Type -Path (Join-Path $Destination $_)
                }
                #$Package.PackageFilename -replace '\.nupkg$'
            }
            'powershellget|gitlab' {
                #powershellget:PSScriptAnalyzer/1.5.0#PSGallery
                #gitlab:Networking/1.2.0#Intermedia
                $Module = Get-Module -Name $PackageName -ListAvailable | ? Version -eq $Version
                if (-not $Module) {
                    Write-Warning "Installing module $PackageName version $Version from source $Source"
                    Import-PackageProvider $ProviderName
                    switch ($ProviderName) {
                        powershellget {
                            Install-Module -Name $PackageName -RequiredVersion $Version -Repository $Source
                        }
                        gitlab {
                            $Credential = Get-Credential -Message "Provider $ProviderName source $Source"
                            Install-Package -ProviderName $ProviderName -Credential $Credential -Name $PackageName -RequiredVersion $Version -Source $Source
                        }
                    }
                }
                Import-Module -Name $PackageName -RequiredVersion $Version -WarningAction SilentlyContinue -ea Stop
            }
            'chocolatey' {
                #chocolatey:OpenSSL.Light/1.1.0.20160926#
                # until Chocolatey provider did not go GA
                $Package = choco list $PackageName --local-only
                if (-not ($Package -eq "$PackageName $Version")) {
                    Write-Warning "Installing package $PackageName version $Version from source $Source"
                    choco install -y $PackageName --version $Version
                }
                $Destination = $RequiredPackage.Destination
                #$Package = Get-Package -Name $PackageName -RequiredVersion $Version -ProviderName $ProviderName
                #if (-not $Package) {
                #   Install-Package -Name $PackageName -RequiredVersion $Version -ProviderName $ProviderName
                #}
            }
            '.*' {
                if ($env:Path -notlike "*$Destination*" -and $RequiredPackage.EnvPath) {
                    Write-Verbose 'Updating $Path'
                    $MachinePath = [System.Environment]::GetEnvironmentVariable('Path','Machine')
                    [System.Environment]::SetEnvironmentVariable('Path',$MachinePath + ";$Destination",'Machine')
                    $env:Path = [System.Environment]::GetEnvironmentVariable('Path','Machine')
                }
            }
        }
    }
} catch {
    Write-Error $_.Exception
    throw 'Failed to load required dependency'
}