# Copyright (c) 2024, NVIDIA CORPORATION.  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.

from nemo_curator.modifiers import DocumentModifier


class FastTextLabelModifier(DocumentModifier):
    def __init__(self, label):
        super().__init__()
        self.label = label

    def modify_document(self, text):
        text = text.replace("\n", " ").replace("__label__", " ")
        return f"{self.label} {text}"
