from typing import Dict, List, Any
from transformers import pipeline, GPT2Tokenizer
from model import GPT

class EndpointHandler():
    def __init__(self, path=""):
        # Preload all the elements you are going to need at inference.
        model = GPT.from_pretrained(path)
        tokenizer = GPT2Tokenizer.from_pretrained('gpt2')
        self.pipeline = pipeline("text-generation", model=model, tokenizer=tokenizer)

    def __call__(self, data: Dict[str, Any]) -> List[Dict[str, Any]]:
        """
       data args:
            inputs (:obj: `str` | `PIL.Image` | `np.array`)
            kwargs
      Return:
            A :obj:`list` | `dict`: will be serialized and returned
        """
        inputs = data.pop("inputs", data)
        output = self.pipeline(inputs)
        return {"Answer": output}