from django.db.models.signals import post_save
from django.dispatch import receiver
import PyPDF2
from io import BytesIO
from .models import PDFDocument


@receiver(post_save, sender=PDFDocument)
def extract_text(sender, instance, created, **kwargs):
    print("Signal disparado!")  # Teste se o Signal está funcionando
    if created and instance.file:
        pdf = PyPDF2.PdfReader(instance.file)
        text = []
        for page in pdf.pages:
            text.append(page.extract_text())
        instance.content = "\n".join(text)
        instance.save(update_fields=["content"])