[Resolve-Module.ps1] Imports and upgrades module dependencies #powershell

Resolve-Module.ps1

# by Brandon Padgett
function Resolve-Module
{
    [Cmdletbinding()]
    Param
    (
        [Parameter(Mandatory)]
        [string[]] $Name
    )

    Process
    {
        foreach ($ModuleName in $Name)
        {
            $Module = Get-Module -Name $ModuleName -ListAvailable
            Write-Verbose -Message "Resolving Module $($ModuleName)"

            if ($Module)
            {
                $Version = $Module | Measure-Object -Property Version -Maximum | Select-Object -ExpandProperty Maximum
                $GalleryVersion = Find-Module -Name $ModuleName -Repository PSGallery | Measure-Object -Property Version -Maximum | Select-Object -ExpandProperty Maximum

                if ($Version -lt $GalleryVersion)
                {

                    if ((Get-PSRepository -Name PSGallery).InstallationPolicy -ne 'Trusted') { Set-PSRepository -Name PSGallery -InstallationPolicy Trusted }

                    Write-Verbose -Message "$($ModuleName) Installed Version [$($Version.tostring())] is outdated. Installing Gallery Version [$($GalleryVersion.tostring())]"

                    Install-Module -Name $ModuleName -Force
                    Import-Module -Name $ModuleName -Force -RequiredVersion $GalleryVersion
                }
                else
                {
                    Write-Verbose -Message "Module Installed, Importing $($ModuleName)"
                    Import-Module -Name $ModuleName -Force -RequiredVersion $Version
                }
            }
            else
            {
                Write-Verbose -Message "$($ModuleName) Missing, installing Module"
                Install-Module -Name $ModuleName -Force
                Import-Module -Name $ModuleName -Force -RequiredVersion $Version
            }
        }
    }
}