from __future__ import annotations

from typing import Any, TYPE_CHECKING

from wisent.core.contrastive_pairs.core.pair import ContrastivePair
from wisent.core.contrastive_pairs.huggingface_pairs.atoms import HuggingFaceBenchmarkExtractor
from wisent.core.cli.cli_logger import setup_logger, bind

if TYPE_CHECKING:
    from lm_eval.api.task import ConfigurableTask


__all__ = ["SuperGlueT5PromptExtractor"]
_LOG = setup_logger(__name__)

task_names = ("super-glue-t5-prompt",)
class SuperGlueT5PromptExtractor(HuggingFaceBenchmarkExtractor):
    """Extractor for Super Glue T5 Prompt benchmark."""


    evaluator_name = "generation"
    def extract_contrastive_pairs(
        self,
        lm_eval_task_data: ConfigurableTask,
        limit: int | None = None,
        preferred_doc: str | None = None,
    ) -> list[ContrastivePair]:
        log = bind(_LOG, task=getattr(lm_eval_task_data, "NAME", "unknown"))
        max_items = self._normalize_limit(limit)
        docs = self.load_docs(lm_eval_task_data, max_items, preferred_doc=preferred_doc)
        pairs: list[ContrastivePair] = []
        log.info("Extracting contrastive pairs", extra={"doc_count": len(docs)})

        for doc in docs:
            pair = self._extract_pair_from_doc(doc)
            if pair is not None:
                pairs.append(pair)
                if max_items is not None and len(pairs) >= max_items:
                    break

        if not pairs:
            task_name = getattr(lm_eval_task_data, "NAME", type(lm_eval_task_data).__name__)
            log.warning("No valid pairs extracted", extra={"task": task_name})

        return pairs

    def _extract_pair_from_doc(self, doc: dict[str, Any]) -> ContrastivePair | None:
        log = bind(_LOG, doc_id=doc.get("id", "unknown"))

        try:
            # Format 1: BoolQ format (question + passage + label)
            if "question" in doc and "passage" in doc and "label" in doc:
                question = str(doc.get("question", "")).strip()
                passage = str(doc.get("passage", "")).strip()
                label = doc.get("label")

                if question and label is not None:
                    # label 1 = True, 0 = False
                    if label == 1:
                        correct = "True"
                        incorrect = "False"
                    else:
                        correct = "False"
                        incorrect = "True"

                    formatted_question = f"Passage: {passage}\n\nQuestion: {question}\nAnswer (True/False):"
                    metadata = {"label": "super_glue_t5_prompt"}
                    return self._build_pair(
                        question=formatted_question,
                        correct=correct,
                        incorrect=incorrect,
                        metadata=metadata,
                    )

            # Format 2: Multiple choice format
            # Try multiple format patterns for question
            question = doc.get("question", doc.get("query", doc.get("input", doc.get("instruction", doc.get("prompt", ""))))).strip()

            # Try multiple format patterns for choices
            choices = doc.get("choices", doc.get("options", doc.get("answers", [])))

            # Handle option_a/b/c/d format
            if not choices and "option_a" in doc:
                choices = [
                    str(doc.get("option_a", "")).strip(),
                    str(doc.get("option_b", "")).strip(),
                    str(doc.get("option_c", "")).strip(),
                    str(doc.get("option_d", "")).strip(),
                ]
                choices = [c for c in choices if c]

            # Try multiple format patterns for answer
            answer = doc.get("answer", doc.get("label", doc.get("target", None)))

            if isinstance(answer, str) and len(answer) == 1 and answer.isalpha():
                answer_idx = ord(answer.upper()) - ord('A')
            elif isinstance(answer, int):
                answer_idx = answer
            else:
                return None

            if not question or not choices or not (0 <= answer_idx < len(choices)):
                log.debug("Skipping doc due to missing/invalid fields", extra={"doc": doc})
                return None

            correct = str(choices[answer_idx]).strip()
            incorrect_idx = (answer_idx + 1) % len(choices)
            incorrect = str(choices[incorrect_idx]).strip()

            formatted_question = f"Question: {question}\nA. {incorrect}\nB. {correct}"
            metadata = {"label": "super_glue_t5_prompt"}

            return self._build_pair(
                question=formatted_question,
                correct=correct,
                incorrect=incorrect,
                metadata=metadata,
            )

        except Exception as exc:
            log.error("Error extracting pair from doc", exc_info=exc, extra={"doc": doc})
            return None

