Powershell - Trying to Create Directories of 6 Files Each. Files aren't being Moved

Question

I'm trying to take files in existing sub-directories and create new directories, each containing six files within their current subdirectory. This is for use with a batch analysis tool that can only currently handle six files reliably and can only open directories. My code iterated through each subdirectory and created the appropriate number of new directories but didn't move any of the files.

Get-ChildItem -Directory | ForEach-Object {
    $directory_count = 0;
    $files = Get-ChildItem $_ -filter *.xml;
    $curr_dir = $_;    
    $i = 0;
    Write-Host "Working on $_.FullName"
    foreach ($file in $files) {
        if ($i -eq 6) {
            $directory_count += 1;
            $i = 0;
        }
        if (Test-Path ".\$curr_dir\$directory_count") {
        }
        else {
            New-Item -ItemType Directory -Force -Path ".\$curr_dir\$directory_count";
        }
        Move-Item -Path $curr_file -Destination ".\$curr_dir\$directory_count";
        $i += 1;
    }
}

Answer 1

Converts from

\
  testmp-1.txt
  testmp-2.txt
  testmp-3.txt
  testmp-4.txt
  testmp-5.txt
  testmp-6.txt

To

+---dir-1
¦       testmp-1.txt
¦       testmp-4.txt
¦       
+---dir-2
¦       testmp-2.txt
¦       testmp-5.txt
¦       
L---dir-3
        testmp-3.txt
        testmp-6.txt

---

#settings
$root = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), [Guid]::NewGuid())
$dirCount = 3

#Emulator Create
[void][System.IO.Directory]::CreateDirectory($root)
@(1..6) | % { [System.IO.File]::WriteAllText([System.IO.Path]::Combine($root, "testmp-$_" + '.txt'), $_)  }

#Demonstrate
&tree /F "$root"
    
#Create dirs and get their full names
$targetDirList = @(@(1..$dirCount) | 
    ForEach-Object {[System.IO.Path]::Combine($root, "dir-" + $_.ToString())} |
    ForEach-Object {[System.IO.Directory]::CreateDirectory($_)} |
    Select -ExpandProperty FullName)

#Sort files from $root to $targetDirList, each file comes to next dir in $targetDirList
$targetDirId = 0;
[System.IO.Directory]::EnumerateFiles($root, '*', [System.IO.SearchOption]::TopDirectoryOnly) | 
    ForEach-Object {
        [System.IO.File]::Move($_,
            [System.IO.Path]::Combine(
                $targetDirList[$targetDirId],
                [System.IO.Path]::GetFileName($_)))
        $targetDirId = ($targetDirId + 1) % $targetDirList.Length # Next targetDirId
    }

#Demonstrate
&tree /F "$root"

#Emulator Delete
[System.IO.Directory]::Delete($root, <#Recursive#> $true)