Need to append this powershell script, not sure what to do - powershell

Question

I need some help expanding on this script. Basically, I need to add when the $inputFileName = 'Report.txt' is not in its default dir when the script runs every morning the job spits out an e-mail saying no file to process, and then the job stops. What I am seeing is when there is no file in the source dir every now and then, the job runs attaching a blank .xls file that is of no use. I appreciate ANY help in advance!
$ErrorActionPreference="SilentlyContinue"
Stop-Transcript | out-null
$ErrorActionPreference = "Continue"
Start-Transcript -path C:\PATH\Logoutput.txt -append
$emailFilePath = 'C:\PATH\PATH\'
$inputFilePath = 'C:\PATH\PATH\Upload'
$inputFileName = 'Report.txt'
$inputFile = Join-Path $inputFilePath $inputFileName
$outputFileName = 'Report.csv'
$outputFilePath = 'C:\PATH\PATH\Send'
$OutputFile = Join-Path $outputFilePath $outputFileName
$folder = 'C:\PATH\PATH\Upload'
$filter = 'Report.txt'
$destination = $outputFilePath
$dateTime1 = Get-Date -Format s
Write-Host "The file was received: $dateTime1"
Import-CSV $inputFile -Delimiter "`t" -Header "Value 1" , "Value 2" , "Value 3" , "Value 4" , "Value 5" | Tee-Object -Variable Report.txt | Export-CSV $OutputFile -Delimiter "," -NoTypeInformation
$xl = new-object -comobject excel.application
$xl.visible = $false
$Workbook = $xl.workbooks.open("$OutputFile")
$Worksheets = $Workbooks.worksheets
$Workbook.SaveAs("$outputFilePath\Report.xls",1)
$Workbook.Saved = $True
$xl.Quit()
$objExcel = new-object -comobject excel.application
$objExcel.Visible = $false
$objWorkbook = $objExcel.Workbooks.open("$outputFilePath\Report.xls")
$objWorksheet = $objWorkbook.Worksheets.Item(1)
$objRange = $objWorksheet.UsedRange
[void] $objRange.EntireColumn.Autofit()
$objWorkbook.SaveAs("$outputFilePath\Report.xlsx",51)
$objWorkbook.Saved = $True
$objExcel.Quit()
$fromaddress = "user#domain.com"
$toaddress = "user#domain.com"
$bccaddress = ""
$CCaddress = "user#domain.com"
$Subject = "Here Is The Report"
$body = get-content $emailFilePath\content.htm
$attachment = "$outputFilePath\Report.xlsx"
$smtpserver = "smtpdomain"
$message = new-object System.Net.Mail.MailMessage
$message.From = $fromaddress
$message.To.Add($toaddress)
$message.CC.Add($CCaddress)
#$message.Bcc.Add($bccaddress)
$message.IsBodyHtml = $True
$message.Subject = $Subject
$attach = new-object Net.Mail.Attachment($attachment)
$message.Attachments.Add($attach)
$message.body = $body
$smtp = new-object Net.Mail.SmtpClient($smtpserver)
$smtp.Send($message)
$dateTime2 = Get-Date -Format s
Write-Host "The file was parsed and emailed at $dateTime2"
Start-Sleep -Seconds 60
$message.Dispose()
Start-Sleep -Seconds 60
kill -processname Excel
Start-Sleep -Seconds 60
Remove-Item "C:\PATH\PATH\Send\*.*"
$filenameFormat = "Report" + "" + (Get-Date -Format "yyyy-MM-dd") + ".txt"
$updatedFile = "C:\PATH\PATH\Upload\" + $filenameFormat
Rename-Item -Path "C:\PATH\PATH\Upload\Report.txt" -NewName $filenameFormat
Move-Item -Path $updatedFile -Destination C:\PATH\PATH\ArchivedReportData
Stop-Transcript
exit

Answer 1

You need to test for the file before processing as follows:
If ( -not (Test-Path -Path "inputFile")) {
#Write your file not found logic/messages here
Exit
}
Import-CSV $inputFile -Delimiter "`t" -Header "Value 1" , "Value 2" , "Value 3" , "Value 4" , "Value 5" | Tee-Object -Variable Report.txt | Export-CSV $OutputFile -Delimiter "," -NoTypeInformation
$dateTime1 = Get-Date -Format s
Write-Host "The file was received: $dateTime1"
...
HTH