How to make powershell with itextsharp edit multiple pdfs - powershell

Question

I managed to make a script that opens a pdf file, reads it, makes 2 variables with information from it and saves the file using those variables, but i cant make it do that to all the pdf files in a folder. i dont know if anyone can help me. This is what i have so far:
$file = "C:\Users\..." #path to my pdf file
Add-Type -Path "C:\Program Files\...\itextsharp.dll"
$pdf = New-Object iTextSharp.text.pdf.pdfreader -ArgumentList $file
$text=[iTextSharp.text.pdf.parser.PdfTextExtractor]::GetTextFromPage($pdf,1)
$startss = $text.LastIndexOf("Completo")
$endss = $text.LastIndexOf("Doc")
$name = $text.Substring($startss +9,$endss - $startss-10)
$startss2 = $text.LastIndexOf("Modalidad")
$endss2 = $text.LastIndexOf("(Entre")
$mode = $text.Substring($startss2 +10,$endss2 - $startss2-10)
$pdf.Close()
Rename-Item -NewName ($name + "-" + $mode + "-" + ".pdf") -Path "$file"

Answer 1

You just need a foreach loop. I would recommend reading about Get-ChildItem if you're not sure what it is and some basics on foreach loops.
$folder = "C:\Users\path\to\pdf folder"
Add-Type -Path "C:\Program Files\...\itextsharp.dll"
$pdfFiles = Get-ChildItem "$folder\*.pdf"
foreach($file in $pdfFiles)
{
$pdf = New-Object iTextSharp.text.pdf.pdfreader -ArgumentList $file
$text= [iTextSharp.text.pdf.parser.PdfTextExtractor]::GetTextFromPage($pdf,1)
$startss = $text.LastIndexOf("Completo")
$endss = $text.LastIndexOf("Doc")
$name = $text.Substring($startss +9,$endss - $startss-10)
$startss2 = $text.LastIndexOf("Modalidad")
$endss2 = $text.LastIndexOf("(Entre")
$mode = $text.Substring($startss2 +10,$endss2 - $startss2-10)
$pdf.Close()
Rename-Item -NewName ($name + "-" + $mode + "-" + ".pdf") -Path $file
}