import sys
from reportlab.lib.pagesizes import A4
from reportlab.lib.units import mm
from reportlab.pdfgen import canvas
from reportlab.graphics.barcode import qr
from reportlab.graphics.shapes import Drawing

def generate_xxl_qr_pdf(domain, start_num, count):
    # URL-Formatierung sicherstellen
    domain = domain.strip().rstrip('/')
    if not domain.startswith("http"):
        domain = f"https://{domain}"

    end_num = start_num + count - 1
    filename = f"Homebox_QR_XXL_HB{start_num:03d}_bis_HB{end_num:03d}.pdf"
    
    c = canvas.Canvas(filename, pagesize=A4)
    page_width, page_height = A4
    
    # 2 Spalten x 4 Zeilen = 8 Labels pro A4-Seite
    cols, rows = 2, 4
    col_width = page_width / cols
    row_height = page_height / rows
    
    current_num = start_num
    
    for i in range(count):
        page_idx = i % 8
        if i > 0 and page_idx == 0:
            c.showPage()
            
        col = page_idx % cols
        row = rows - 1 - (page_idx // cols)
        
        x_center = col * col_width + (col_width / 2)
        y_center = row * row_height + (row_height / 2)
        
        code_str = f"HB-{current_num:03d}"
        # Der Direkt-Such-Link für die Homebox-Weboberfläche
        qr_url = f"{domain}/items?q={code_str}"
        
        # Gestrichelte Schnittlinie
        c.setDash(2, 2)
        c.setStrokeColorRGB(0.6, 0.6, 0.6)
        c.rect(col * col_width + 3*mm, row * row_height + 3*mm, col_width - 6*mm, row_height - 6*mm)
        
        # QR-Code (50mm x 50mm)
        qr_size = 50 * mm
        qr_widget = qr.QrCodeWidget(qr_url)
        bounds = qr_widget.getBounds()
        w = bounds[2] - bounds[0]
        h = bounds[3] - bounds[1]
        
        d = Drawing(qr_size, qr_size, transform=[qr_size/w, 0, 0, qr_size/h, 0, 0])
        d.add(qr_widget)
        
        render_x = x_center - (qr_size / 2)
        render_y = y_center - (qr_size / 2) + 2*mm
        d.drawOn(c, render_x, render_y)
        
        # Leserlicher Text darunter
        c.setFont("Courier-Bold", 16)
        c.setFillColorRGB(0, 0, 0)
        c.drawCentredString(x_center, render_y - 7*mm, code_str)
        
        current_num += 1
        
    c.save()
    print(f"\n✅ PDF mit Homebox-Links wurde erstellt: {filename}")

if __name__ == "__main__":
    print("--- Homebox XXL Label Generierung (mit URL) ---")
    domain_input = "homebox.prinz-pilaw.de".strip()
    
    try:
        start_input = input("Startnummer (Standard 1): ").strip()
        start = int(start_input) if start_input else 1
        
        anzahl_input = input("Anzahl Etiketten (Standard 16): ").strip()
        anzahl = int(anzahl_input) if anzahl_input else 16
    except ValueError:
        print("❌ Fehler: Bitte gültige Zahlen eingeben.")
        sys.exit(1)

    generate_xxl_qr_pdf(domain_input, start, anzahl)