# Bitvise SSH Server Usage FAQ, Q287
#
# https://bitvise.com/ssh-server-usage-faq#Q287
#
# Example PowerShell script to move files from a staging directory to a network share,
# with check to avoid moving files that are currently being copied to staging.
#
# If files may be moved to the staging directory from a different local volume,
# such a move involves copying the file. This type of move is not atomic. In this case,
# the script must avoid moving files from staging which are not yet done moving to staging.

$staging = "C:\Staging"
$dest    = "\\server\share\drop"

Get-ChildItem -LiteralPath $staging -File | ForEach-Object {
    $path = $_.FullName

    try {
        # Can we open an exclusive handle?
        $s = [System.IO.File]::Open(
            $path,
            [System.IO.FileMode]::Open,
            [System.IO.FileAccess]::ReadWrite,
            [System.IO.FileShare]::None
        )
        $s.Dispose()

        # If test succeeded, we can assume the file is done being copied
        Move-Item -LiteralPath $path -Destination $dest -ErrorAction Stop
    }
    catch [System.IO.IOException] {
        # File in use / sharing violation / transient I/O: skip the file in this cycle
    }
}