"""
HaremPiiConfig — subclass of OpenAIPrivacyFilterConfig that:
  * sets `model_type="haremb_pii"` (so AutoConfig + auto_map dispatch works
    with `trust_remote_code=True`)
  * paired with HaremPiiForTokenClassification in modeling_haremb_pii.py
    via `auto_map`

This release is a 1-layer surgical slice of the OpenMed teacher:
  * num_hidden_layers=1
  * inference-only — Viterbi decoding is built into the forward pass.
"""
from __future__ import annotations

from transformers.models.openai_privacy_filter.configuration_openai_privacy_filter import (
    OpenAIPrivacyFilterConfig,
)


class HaremPiiConfig(OpenAIPrivacyFilterConfig):
    """
    HarEmb config. `model_type="haremb_pii"` disambiguates from upstream so
    AutoConfig + AutoModel mappings can target our subclasses without
    colliding with the registered OpenAIPrivacyFilterConfig entry.
    `modeling_haremb_pii` performs the auto-registration at import time.
    """
    model_type = "haremb_pii"

    def __init__(
        self,
        use_viterbi_decode: bool = True,
        viterbi_replace_logits: bool = True,
        **kwargs,
    ):
        super().__init__(**kwargs)
        # When True (and model is in eval mode), HaremPiiForTokenClassification.forward
        # runs constrained BIOES Viterbi over logits and attaches `predicted_labels`
        # to the output. Set to False to skip Viterbi entirely.
        self.use_viterbi_decode = bool(use_viterbi_decode)
        # When True (and Viterbi is on), forward replaces `outputs.logits` with a
        # one-hot-shaped tensor whose argmax equals the Viterbi prediction. This
        # makes HF `pipeline()` and any naive `logits.argmax(-1)` consumer use
        # Viterbi predictions automatically. The raw logits are preserved on
        # the output as `raw_logits`.
        self.viterbi_replace_logits = bool(viterbi_replace_logits)


__all__ = ["HaremPiiConfig"]