Adding If / If Not statement into PowerShell - powershell

Question

We are moving to JumpCloud AD services, and with that, comes automated deployment commands from the JumpCloud console. I've created a script that works with Chocolatey to install some apps, and the ones not on Chocolatey I have them in an S3 bucket on AWS that I've tied into a Invoke-WebRequest -Uri command to pull the package, and copy it to the destination folder.
The problem I'm running into, is, I want the command to run, but I want it to check and see if the install files are already there, if they are, move onto the next item, if they aren't, then copy the file over.
Anyone willing to give me a few pointers? Currently have 7 packages being copied over, so I assume I'll need 7 if statements.
Here is the code of what I have attempted so far:
if ( -not (Test-Path -path "C:\Windows\Temp\JC_ScheduledTasks")) {
New-Item -Path "C:\Windows\Temp\JC_ScheduledTasks" -ItemType directory
}
But I'm not sure how to tweak that for items pulled from AWS:
Invoke-WebRequest -Uri "cavo-deploy-virginia.s3.amazonaws.com/QualysCloudAgent.exe" -OutFile "c:\jumpcloud\QualysCloudAgent.exe"

Answer 1

Since you have an array of files that you want to do the same set of commands for. Then use simple loop either using foreach or ForEach-Object.
$DestinationFolder = 'c:\jumpcloud\' #'
# Define the array here or use Get-Content for a list from a text file
$Files = #('QualysCloudAgent.exe','example1.exe')
foreach ($File in $Files) {
# Determine the destination for the file
$DestinationFile = Join-Path $DestinationFolder $File
# Validate if the file already exists
if ( -not (Test-Path $DestinationFile)) {
Invoke-WebRequest -Uri "cavo-deploy-virginia.s3.amazonaws.com/$File" -OutFile $DestinationFile
}
}