30 lines
773 B
Python
30 lines
773 B
Python
from __future__ import annotations
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import re
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from django.conf import settings
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MAX_USERNAME_LEN = 32
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_SANITIZE_RE = re.compile(r"[^a-z0-9_-]")
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def render_system_username(username: str, user_id: int) -> str:
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template = settings.KEYWARDEN_ACCOUNT_USERNAME_TEMPLATE
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raw = template.replace("{{username}}", username or "")
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raw = raw.replace("{{user_id}}", str(user_id))
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cleaned = sanitize_username(raw)
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if len(cleaned) > MAX_USERNAME_LEN:
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cleaned = cleaned[:MAX_USERNAME_LEN]
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if cleaned:
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return cleaned
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return f"kw_{user_id}"
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def sanitize_username(raw: str) -> str:
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raw = (raw or "").lower()
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raw = _SANITIZE_RE.sub("_", raw)
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raw = raw.strip("-_")
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if raw.startswith("-"):
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return "kw" + raw
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return raw
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