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from __future__ import annotations
from sqlalchemy import select
from sqlalchemy.orm import Session
from srht_contrib.models import ActorAlias
class ActorIdentityResolver:
def __init__(self, configured_aliases: dict[str, list[str]] | None = None) -> None:
self.configured_aliases = configured_aliases or {}
def canonicalize(self, actor: str, db: Session | None = None) -> str:
normalized = actor.strip()
if not normalized:
return normalized
for canonical, aliases in self.configured_aliases.items():
if normalized == canonical or normalized in aliases:
return canonical
if db is not None:
alias = db.scalar(select(ActorAlias).where(ActorAlias.alias == normalized))
if alias is not None:
return alias.canonical_actor
return normalized
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