27 lines
1.1 KiB
Python
27 lines
1.1 KiB
Python
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"""Local QR generation for printable inventory labels. No asset writes."""
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from urllib.parse import urlsplit, urlunsplit
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import qrcode
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from qrcode.image.svg import SvgPathImage
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from fastapi import HTTPException
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LABEL_SIZES = {'62x40': (62, 40), '62x29': (62, 29), '89x36': (89, 36)}
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def hardware_label_url(base_url: str, hardware_id: int) -> str:
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try:
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parts = urlsplit(base_url.strip())
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except ValueError as error:
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raise HTTPException(400, "Hub-adressen er ugyldig") from error
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if (parts.scheme not in {'http', 'https'} or not parts.hostname
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or parts.username or parts.password or parts.query or parts.fragment):
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raise HTTPException(400, 'Brug en http- eller https-adresse uden login, søgeparametre eller fragment.')
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return urlunsplit((parts.scheme, parts.netloc, parts.path.rstrip('/') + f'/hardware/{hardware_id}', '', ''))
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def hardware_label_qr(url: str) -> str:
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qr = qrcode.QRCode(error_correction=qrcode.constants.ERROR_CORRECT_M, border=4)
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qr.add_data(url)
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qr.make(fit=True)
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return qr.make_image(image_factory=SvgPathImage).to_string().decode('utf-8')
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