invoking command while copying file over ps remote session fails - powershell

Question

I have a question regarding how to properly structure a command with powershell.
Here is the code where I am having the issue.
$python_command =
{
param($script)
C:\Python27\python.exe $script
return $lastexitcode
}
$exit_code = Invoke-Command Copy-Item -Path C:\TestWare\jsonStuff.json -Destination
C:\Tunnel\Tunneling\jsonStuff.json -ToSession $Session - ScriptBlock $python_command -ArgumentList $exec_script
#Clean up
ExitWithCode($exit_code)
I'm assuming there there is an issue with how $exit_code is formatted because when it has this value
Copy-Item -Path C:\TestWare\jsonStuff.json -Destination C:\Tunnel\Tunneling\jsonStuff.json -ToSession $Session
there are no issues. I want the python command to run as well though. Can these commands be separated or how would they work as one? At the moment, I am getting the following error
Invoke-Command : A parameter cannot be found that matches parameter name 'Path'.
At C:\TestWare\run-test3.ps1:122 char:39
+ $exit_code = Invoke-Command Copy-Item -Path C:\TestWare\ ...
+ ~~~~~
+ CategoryInfo : InvalidArgument: (:) [Invoke-Command], ParameterBindingException
+ FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.PowerShell.Commands.InvokeCommandCommand
Any ideas on how to fix? I am on Powershell version 5 as well.
(EDIT) Here is my ExitWithCode function
function ExitWithCode
{
param
(
$exitcode
)
$host.SetShouldExit($exitcode)
exit
}

Answer 1

Invoke-Command has many different parameter sets, but just two fundamental ways to specify what command to invoke [remotely]:
via the -FilePath parameter, which expects a local script's path whose content is converted to a script block, which is then executed on the target machine.
via the -ScriptBlock parameter, which accepts a script block ({ ... })
Therefore, your attempt to pass a script block and a Copy-Item call directly cannot work.
It looks like you need 2 statements:
The Copy-Item call to copy something to session $Session with -ToSession.
The Invoke-Command statement to execute script block $python_command in session -Session $Session.
You could only get away with a single Invoke-Command call if you read the content of C:\TestWare\jsonStuff.json into memory and passed it as an argument to the script block and acted on that argument accordingly.