# handler.py
import time
from typing import Any, Dict, List, Union
from transformers import pipeline

class EndpointHandler:
    def __init__(self, path: str = ""):
        # Load a standard text-classification pipeline from local repo files
        self.pipe = pipeline("text-classification", model=path)

    def __call__(self, data: Dict[str, Any]) -> Dict[str, Any]:
        # Accept {"inputs": "..."} or {"inputs": ["...", "..."]}
        inputs: Union[str, List[str]] = data.get("inputs", data)

        t0 = time.perf_counter()
        preds = self.pipe(inputs, truncation=True)
        elapsed = time.perf_counter() - t0

        # Normalize to list
        preds_list = preds if isinstance(preds, list) else [preds]
        labels = [p["label"] for p in preds_list]
        scores = [float(p["score"]) for p in preds_list]

        return {
            "labels": labels,
            "scores": scores,
            "processing_time_sec": elapsed,
        }