import qrcode
import uuid
from datetime import datetime

class ExportService:
    def export_pdf(self, document: str, user, options: dict):
        return f"[EXPORT] PDF gerado para {user}."

    def export_pdfa(self, document: str, user, options: dict):
        return f"[EXPORT] PDF/A gerado para {user}."

    def generate_qr_hash(self, document: str):
        hash_value = str(uuid.uuid4())
        img = qrcode.make(hash_value)
        img.save(f"exports/{hash_value}.png")
        return hash_value

    def apply_watermark(self, document: str, watermark_text: str):
        return f"[EXPORT] Marca d'água aplicada: {watermark_text}"

    def sign_document(self, document: str, cert_path: str, cert_password: str):
        return "[EXPORT] Documento assinado digitalmente (ICP-Brasil)."