Post a text file to a discord webhook

Submit-TextFile.ps1

function Submit-TextFile($filePath,$Uri){
    $filename = (Get-ChildItem $filePath).Name
    $filecontents = Get-Content $filePath -raw
    $boundary = [guid]::NewGuid().ToString()
    $contentinfo = "Content-Disposition: form-data; name=`"file`"; filename=`"$filename`"`nContent-Type: text/html; charset=utf-8`n"
    $body = "--$boundary`n$contentinfo`n$filecontents`n--$boundary--`n"
    $params = @{
        Uri         = $Uri
        Body        = $body
        Method      = 'Post'
        ContentType = "multipart/form-data; boundary=$boundary"
    }
    Invoke-RestMethod @params
}

#generate a random file to test with
$randomlogfile = "{0:yyyyMMddhhmmss}.txt" -f (get-date)
"Random Data`n--------------`n" > $randomlogfile
0..20|%{[guid]::NewGuid().ToString()>>$randomlogfile}
$Uri = 'yourwebhookurl'
$filePath = (Get-Item $randomlogfile).FullName

# call the function
Submit-TextFile $filePath $Uri