Powershell: Dynamic Menu-based program to copy file

Question

The purpose of this was to copy one (or more) files from one user selected dynamic location to another user selected dynamic location.

Write-Host "Choose where to copy FROM"

$1MainFolder = (Get-ChildItem "C:\Users\$env:USERNAME\FROM" -Directory | Sort-Object)
$menu = @{}
for ($i=1;$i -le $1MainFolder.count; $i++) {
    Write-Host "$i. $($1MainFolder[$i-1].name)"
    $menu.Add($i,($1MainFolder[$i-1].name))
    }

[int]$ans = Read-Host 'Enter selection'
$selection = $menu.Item($ans)
# The directory after the selection is only one, however it's different for every user; this remains the same for "COPY TO"
$First = (Get-ChildItem "C:\Users\$env:USERNAME\FROM\$selection" -Directory)

# This directory is the same for every user; this remains the same for "COPY TO"
$DataFROM = (Set-Location $First\USERFILE) 

Clear-Host


Write-Host "Choose where to copy TO"

$2MainFolder = (Get-ChildItem "C:\Users\$env:USERNAME\TO" -Directory | Sort-Object)
$menu2 = @{}
for ($i=1;$i -le $2MainFolder.count; $i++) {
    Write-Host "$i. $($2MainFolder[$i-1].name)"
    $menu2.Add($i,($2MainFolder[$i-1].name))
    }

[int]$ans2 = Read-Host 'Enter selection'
$selection2 = $menu2.Item($ans2)
$Second = (Get-ChildItem "C:\Users\$env:USERNAME\TO\$selection2" -Directory)

$DataTO = (Set-Location $Second\USERFILE)

Clear-Host

That completes section one and two. The third section allows the user to then pick the file they want copied - this is a separate function which works well, however it errors in conjunction with this. I've since simplified the function to obtain the same error with:

# The Select-Object section being the simplified part...
Get-ChildItem $DataFROM | Select-Object "DATA.log*"  | Copy-Item -Destination $DataTO

What I expect to happen is for the data to be copied from the initial dynamic location to the final dynamic destination.

What happens is that I get an error stating that it "Cannot bind argument to parameter 'Path' because it is an empty string." to which it points at the $DataTO variable.

This then lead me to disregard the third section and test the variables to which I found that if I use the following after the first two sections:

Get-ChildItem $DataFROM

# or

Get-ChildItem $DataTO

it returns back information from the last selected menu, disregarding the variables entirely. So then are the dynamic menus not to be used in this manner or perhaps I am using the menus wrong?

Would someone please advise where I've gone astray?

Answer 1

Update: I've since re-worked it to the following that fits my requested needs: (hopefully this will aid someone else needing something similar)

[array]$sMainFolder = Get-ChildItem "C:\Users\$env:USERNAME\DATA-TO_FROM" -Directory | ForEach-Object {
          Get-ChildItem $_.FullName | ForEach-Object {
              $found = Get-ChildItem $_.FullName | Where-Object { $_.Name -eq 'USERFILE' } | Select-Object -First 1
              if ($found) {
                  [PSCustomObject]@{
                      RootFolder = [string]$_.FullName
                      Path = $found.FullName
                  }
              }
          }
      }

      [array]$dMainFolder = Get-ChildItem "C:\Users\$env:USERNAME\DATA-TO_FROM" -Directory | ForEach-Object {
        $subs = Get-ChildItem $_.FullName
        $found = $subs | ForEach-Object { Get-ChildItem $_.FullName } | Where-Object { $_.Name -eq 'USERFILE' } | Select-Object -First 1
            if ($found) {
                [PSCustomObject]@{
                    RootFolder = [string]$_.FullName
                    Path = $found.FullName
                }
            }
        }

function ShowMenu ($Folders, $Message) {
    Write-Host $Message
    for ($i = 1; $i -le $Folders.count; $i++) {
        $name = $Folders[$i - 1].RootFolder
        Write-Host "$i. $name"
    }
    [int]$ans = Read-Host 'Enter Selection'
    Return $Folders[$ans -1].Path
}

$DataFROM = ShowMenu $sMainFolder "Choose where to copy FROM"
$DataTO = ShowMenu $dMainFolder "Choose where to copy TO"

Clear-Host

Copy-Item "$DataFROM\*" $DataTO -Recurse -Force