param(
    [Parameter(Mandatory=$false,Position=0)][switch]$child
)


function Get-PSVersion {
    if (Test-Path  Variable:PSVersionTable) {
        return $PSVersionTable.PSVersion.ToString()
    }
    else {
        return "1.0.0.0"
    }
}

function Test-AdminRights {
    $currentUser = New-Object Security.Principal.WindowsPrincipal $([Security.Principal.WindowsIdentity]::GetCurrent())
    return $currentUser.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)
}

function Set-DFSActive {
    foreach ($line in $(Get-Content -Path $Global:cfg)) {
        $dfsLink = $line.Split(':')[0]
        $smbPath = $line.Split(':')[1]
        Set-Location "Microsoft.PowerShell.Core\FileSystem::$dfsLink"
        Start-Process dfsutil.exe -ArgumentList "client","property","state","active","$dfsLink","$smbPath"
    }
}


$Global:cfg = $MyInvocation.MyCommand.Path.Replace('.ps1', '.cfg')


if (!(Test-AdminRights)) {
    if (!($child)) {
        $params = New-Object System.Collections.ArrayList
        foreach ($key in $MyInvocation.BoundParameters.Keys) {
            [void]$params.Add("-$key")
            [void]$params.Add($PSBoundParameters.$key)
        }
        Start-Process powershell.exe -Verb RunAs -ArgumentList (
            "-NoProfile -File ""{0}"" -child $($params -join " ")" -f $($MyInvocation.MyCommand.Definition)
        )
        exit
    }
}
else {
    if (!(Test-Path -Path "$env:SystemRoot\System32\dfsutil.exe")) {
        try {
            $system = $(Get-WmiObject -Class "Win32_OperatingSystem")
            # Windows 11, 10, 2022, 2019, 2016, 8.1, 2012R2
            if (($system.Version -like '10.0.*') -or ($system.Version -like '6.3.*')) {
                # Workstation
                if ($system.ProductType -like '1') {
                    $capability = "Rsat.FileServices.Tools"
                    if (!(Get-WindowsCapability -Name "*$capability*" -Online | Where-Object State -eq 'Installed' -ErrorAction Stop)) {
                        Get-WindowsCapability -Name "*$capability*" -Online | Add-WindowsCapability -Online -ErrorAction Stop
                    }
                }
                # DomainController, Server
                if (($system.ProductType -like '2') -or ($system.ProductType -like '3')) {
                    $capability = "RSAT-DFS-Mgmt-Con"
                    if(!(Get-WindowsFeature -Name "*$capability*" | Where-Object InstallState -eq 'Installed' -ErrorAction Stop)) {
                        Get-WindowsFeature -Name "*$capability*" | Install-WindowsFeature -IncludeAllSubFeature -ErrorAction Stop
                    }
                }
            }
            # Windows 7, 2008R2
            if ($system.Version -like '6.1.*') {
                # Workstation
                if ($system.ProductType -like '1') {
                    if (!(Get-WmiObject -Class "Win32_QuickFixEngineering" | Where-Object { $_.HotFixID -like '*958830' })) {
                        if ($system.OSArchitecture -like '32*') {
                            Start-Process wusa.exe -ArgumentList "\\capital.local\sys\repo\distrib\microsoft\rsat\win7\Windows6.1-KB958830-x86.msu","/quiet","/norestart" -ErrorAction Stop -Wait
                        }
                        if ($system.OSArchitecture -like '64*') {
                            Start-Process wusa.exe -ArgumentList "\\capital.local\sys\repo\distrib\microsoft\rsat\win7\Windows6.1-KB958830-x64.msu","/quiet","/norestart" -ErrorAction Stop -Wait
                        }
                    }
                    Start-Process dism.exe -ArgumentList "/Online","/Enable-Feature:RemoteServerAdministrationTools" -ErrorAction Stop -Wait
                    Start-Process dism.exe -ArgumentList "/Online","/Enable-Feature:RemoteServerAdministrationTools-Roles" -ErrorAction Stop -Wait
                    Start-Process dism.exe -ArgumentList "/Online","/Enable-Feature:RemoteServerAdministrationTools-Roles-FileServices" -ErrorAction Stop -Wait
                    Start-Process dism.exe -ArgumentList "/Online","/Enable-Feature:RemoteServerAdministrationTools-Roles-FileServices-Dfs" -ErrorAction Stop -Wait
                }
                # DomainController, Server
                if (($system.ProductType -like '2') -or ($system.ProductType -like '3')) {
                }
            }
        }
        catch [System.Management.Automation.CommandNotFoundException] {
            Write-Host "Powershell $(Get-PSVersion) need to update"
            Start-Sleep 10
            Exit 1
        }
    }
    if (!(Test-Path -Path "$($Global:cfg)")) {
        Exit 1
    }
    Set-DFSActive
    Exit 0
}