# Copyright 2021 Zilliz. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import numpy
import torch
from transformers import RobertaTokenizer, Data2VecTextModel
from towhee.operator.base import NNOperator

class Data2VecText(NNOperator):
    def __init__(self, model_name):
        self.model = Data2VecTextModel.from_pretrained(model_name)
        self.tokenizer = RobertaTokenizer.from_pretrained(model_name)

    def __call__(self, text: str) -> numpy.ndarray:
        inputs = self.tokenizer(text, return_tensors="pt")
        outputs = self.model(**inputs)
        return outputs.pooler_output.detach().cpu().numpy().flatten()