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from fpdf import FPDF
import qrcode
import json
import io
import base64
def generate_pdf(snapshot: dict):
# Create QR code from lineage hash
lineage_hash = snapshot.get("lineage", {}).get("lineage_hash", "")
qr = qrcode.make(lineage_hash)
qr_bytes = io.BytesIO()
qr.save(qr_bytes, format="PNG")
qr_data = qr_bytes.getvalue()
# PDF structure
pdf = FPDF()
pdf.add_page()
pdf.set_font("Arial", size=12)
pdf.set_text_color(0, 102, 204)
pdf.set_font("Arial", "B", 18)
pdf.cell(200, 10, txt="AI Sovereign Sentinel", ln=True)
pdf.set_font("Arial", "B", 14)
pdf.cell(200, 10, txt="Enterprise Model Integrity Report", ln=True)
pdf.ln(8)
pdf.set_font("Arial", size=10)
pdf.set_text_color(0, 0, 0)
pdf.multi_cell(0, 6, txt=json.dumps(snapshot, indent=4))
# QR section
pdf.ln(10)
pdf.set_font("Arial", "B", 12)
pdf.cell(200, 10, txt="Lineage Verification QR Code:", ln=True)
qr_filename = "qr_temp.png"
with open(qr_filename, "wb") as f:
f.write(qr_data)
pdf.image(qr_filename, x=10, y=pdf.get_y(), w=50)
output_name = "Sovereign_Integrity_Report.pdf"
pdf.output(output_name)
return output_name
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