"""Evaluation-source importers for the Stage 0 registry freeze.

These import the *evaluation* sources (``docs/01`` §4) to the registry before
any training source is touched. MMMU-Pro, MathVision, and MathVista are visual
and produce :class:`NormalizedItem` rows; text MMLU-Pro is an image-free
``untouched`` retention probe and is recorded directly as a text registry row
(``docs/02`` §3).

MathVista is strictly evaluation-only. It is imported here under the
``untouched_evaluation_only`` policy; the train ingest driver separately
hard-refuses any attempt to ingest it as a training source.
"""

from __future__ import annotations

from collections.abc import Mapping
from typing import Any

from .base import (
    AnswerType,
    Choice,
    ImageResolver,
    ImageStore,
    IngestError,
    NormalizedItem,
    canonicalize_mc_answer,
    infer_open_answer_type,
    make_item,
    mc_choices,
    text_registry_row,
)

# --- MMMU-Pro (10-option multiple choice, visual) ---------------------------


def normalize_mmmu_pro(
    row: Mapping[str, Any],
    images: ImageStore,
    resolve: ImageResolver,
    *,
    revision: str,
    split: str,
    config: str = "standard (10 options)",
) -> NormalizedItem:
    if split != "test":
        raise IngestError(f"mmmu_pro: only split 'test' may be frozen, got {split!r}")
    question = str(row["question"])
    choices: list[Choice] = mc_choices([str(o) for o in row["options"]])
    answer_raw = str(row["answer"])
    answer_canonical = canonicalize_mc_answer(answer_raw, choices)
    image_ref = str(row["image"])
    rel, digest = images.store(resolve(image_ref))
    return make_item(
        source="mmmu_pro",
        source_revision=revision,
        source_config=config,
        source_split=split,
        source_native_id=str(row["id"]),
        question=question,
        choices=choices,
        answer_raw=answer_raw,
        answer_canonical=answer_canonical,
        answer_type="multiple_choice",
        image_paths=(rel,),
        image_sha256=(digest,),
        policy="untouched_evaluation_only",
        native_row=row,
        subject=str(row.get("subject", "")) or None,
    )


# --- MathVision (open-ended, visual) ----------------------------------------


def normalize_mathvision(
    row: Mapping[str, Any],
    images: ImageStore,
    resolve: ImageResolver,
    *,
    revision: str,
    split: str,
    config: str = "default",
) -> NormalizedItem:
    if split != "testmini":
        raise IngestError(f"mathvision: only split 'testmini' may be frozen, got {split!r}")
    question = str(row["question"])
    answer_raw = str(row["answer"])
    rel, digest = images.store(resolve(str(row["image"])))
    return make_item(
        source="mathvision",
        source_revision=revision,
        source_config=config,
        source_split=split,
        source_native_id=str(row["id"]),
        question=question,
        choices=(),
        answer_raw=answer_raw,
        answer_canonical=answer_raw,
        answer_type=infer_open_answer_type(answer_raw),
        image_paths=(rel,),
        image_sha256=(digest,),
        policy="untouched_evaluation_only",
        native_row=row,
    )


# --- MathVista (mixed MC/open, visual, evaluation-only) ---------------------


def normalize_mathvista(
    row: Mapping[str, Any],
    images: ImageStore,
    resolve: ImageResolver,
    *,
    revision: str,
    split: str,
    config: str = "default",
) -> NormalizedItem:
    if split != "testmini":
        raise IngestError(f"mathvista: only split 'testmini' may be frozen, got {split!r}")
    question = str(row["question"])
    answer_raw = str(row["answer"])
    image_ref = str(row["image"])
    rel, digest = images.store(resolve(image_ref))
    raw_choices = row.get("choices")
    choices: tuple[Choice, ...]
    answer_canonical: str | int | bool
    answer_type: AnswerType
    if raw_choices:
        choices = tuple(mc_choices([str(c) for c in raw_choices]))
        answer_canonical = canonicalize_mc_answer(answer_raw, choices)
        answer_type = "multiple_choice"
    else:
        choices = ()
        answer_canonical = answer_raw
        answer_type = infer_open_answer_type(answer_raw)
    return make_item(
        source="mathvista",
        source_revision=revision,
        source_config=config,
        source_split=split,
        source_native_id=str(row["id"]),
        question=question,
        choices=choices,
        answer_raw=answer_raw,
        answer_canonical=answer_canonical,
        answer_type=answer_type,
        image_paths=(rel,),
        image_sha256=(digest,),
        policy="untouched_evaluation_only",
        native_row=row,
    )


# --- text MMLU-Pro (image-free, untouched retention probe) ------------------


def registry_row_mmlu_pro_text(
    row: Mapping[str, Any],
    *,
    revision: str,
    split: str = "test",
    config: str = "default",
) -> dict[str, Any]:
    if split != "test":
        raise IngestError(f"mmlu_pro_text: only split 'test' may be frozen, got {split!r}")
    choices = mc_choices([str(o) for o in row["options"]])
    answer = str(row["answer"])
    answer_canonical = canonicalize_mc_answer(answer, choices)
    return text_registry_row(
        source="mmlu_pro_text",
        source_revision=revision,
        config=config,
        split=split,
        native_id=str(row["id"]),
        question=str(row["question"]),
        choices=choices,
        answer_canonical=answer_canonical,
        policy="untouched_evaluation_only",
    )