"""Layer-1 readers over dialogue originals and derived records. No formulas."""
from __future__ import annotations

from data_layer import register_reader
from dialogue_store import latest_derived, list_messages


def _conversation_messages(*, profile_id: str, context: dict):
    conversation_id = context.get("conversation_id")
    if not conversation_id:
        raise KeyError("conversation_id")
    return list_messages(profile_id, conversation_id)


def _latest_derived(*, profile_id: str, context: dict):
    return latest_derived(
        profile_id,
        context.get("subject_type") or "",
        context.get("subject_id") or "",
        context.get("kind") or "",
    )


register_reader("conversation_messages", _conversation_messages)
register_reader("latest_derived", _latest_derived)