[Bug]: PDF Date Fields Can Be Arrays, Causing TypeError in PdfMeta::make()

[international-omelette]

What happened?

The PdfMeta::make() method in src/Models/PdfMeta.php throws a TypeError when PDF documents contain date fields (CreationDate, ModDate) as arrays instead of strings.

Root Cause

Lines 37-43 in PdfMeta.php assume date fields are always strings:

if ($creationDate) {
    $creationDate = new DateTime($creationDate);
}

if ($modDate) {
    $modDate = new DateTime($modDate);
}

However, the underlying smalot/pdfparser library can return arrays when PDF metadata contains array structures (which is valid per PDF specification).

Error Message

TypeError: DateTime::__construct(): Argument #1 ($datetime) must be of type string, array given

Proposed Fix

Add type checking before DateTime construction:

if ($creationDate) {
    if (is_array($creationDate)) {
        // Handle array case - use first valid date
        $validDate = array_filter($creationDate, function($date) {
            return !empty($date) && is_string($date);
        });
        $creationDate = !empty($validDate) ? new DateTime(reset($validDate)) : null;
    } else {
        $creationDate = new DateTime($creationDate);
    }
}

if ($modDate) {
    if (is_array($modDate)) {
        // Handle array case - use last valid date for modification date
        $validDate = array_filter($modDate, function($date) {
            return !empty($date) && is_string($date);
        });
        $modDate = !empty($validDate) ? new DateTime(end($validDate)) : null;
    } else {
        $modDate = new DateTime($modDate);
    }
}

Impact

• Affects PDF metadata extraction for certain PDF files
• Causes complete extraction failure rather than graceful degradation

How to reproduce the bug

This occurs with PDF files that have array-structured metadata fields

Package Version

latest

PHP Version

8.x

Which operating systems does with happen with?

No response

Notes

No response

[international-omelette]

@ewilan-riviere do you plan on fixing this issue? If you are ok with the proposed solution, I could send a PR.

[ewilan-riviere]

I understand your problem, I don't have much time right now, so a PR would be welcome!