# coding=utf-8
# Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor.
#
# 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.

# Lint as: python3

import json

import datasets

import os

_CITATION = '''
@inproceedings{Ammanabrolu2020AAAI, 
title={Story Realization: Expanding Plot Events into Sentences}, 
author={Prithviraj Ammanabrolu and Ethan Tien and Wesley Cheung and Zhaochen Luo and William Ma and Lara J. Martin and Mark O. Riedl}, 
journal={Proceedings of the AAAI Conference on Artificial Intelligence (AAAI)}, 
year={2020}, 
volume={34},
number={05},
url={https://ojs.aaai.org//index.php/AAAI/article/view/6232}
}
'''

_DESCRIPTION = 'Loading script for the science fiction TV show plot dataset.'

_URLS = {'Scifi_TV_Shows': "https://huggingface.co/datasets/lara-martin/Scifi_TV_Shows/resolve/main/scifiTVshows.zip"}


class Scifi_TV_Shows(datasets.GeneratorBasedBuilder):
    BUILDER_CONFIGS = [
        datasets.BuilderConfig(
            version=datasets.Version('1.1.0'),
            name="Scifi_TV_Shows", 
            description=f'Science fiction TV show plot summaries.',
        )
    ]

    def _info(self):
        features = datasets.Features({
            'story_num': datasets.Value('int16'),
            'story_line': datasets.Value('int16'),
            'event': datasets.Sequence(datasets.Value('string')), 
            'gen_event': datasets.Sequence(datasets.Value('string')),
            'sent': datasets.Value('string'),
            'gen_sent': datasets.Value('string'),            
            'entities': datasets.Value('string'),
        })

        return datasets.DatasetInfo(
            # This is the description that will appear on the datasets page.
            description=_DESCRIPTION,
            # This defines the different columns of the dataset and their types
            features=features,  # Here we define them above because they are different between the two configurations
            supervised_keys=None,
            # Homepage of the dataset for documentation
            homepage='https://github.com/rajammanabrolu/StoryRealization',
            # License for the dataset if available
            license='The Creative Commons Attribution 4.0 International License. https://creativecommons.org/licenses/by/4.0/',
            # Citation for the dataset
            citation=_CITATION,
        )

    def _split_generators(self, dl_manager):
        my_urls = _URLS[self.config.name]
        data_dir = dl_manager.download_and_extract(my_urls)
        train_filepath = os.path.join(data_dir, "scifi-train.txt")
        test_filepath = os.path.join(data_dir, "scifi-test.txt")
        val_filepath = os.path.join(data_dir, "scifi-val.txt")
        return[
               datasets.SplitGenerator(
                    name=datasets.Split.TRAIN,
                    gen_kwargs={
                        'filepath': train_filepath,
                    },
                ),
                datasets.SplitGenerator(
                    name=datasets.Split.TEST,
                    gen_kwargs={
                        'filepath': test_filepath,
                    },
                ),
                datasets.SplitGenerator(
                    name=datasets.Split.VALIDATION,
                    gen_kwargs={
                        'filepath': val_filepath,
                    },
                ), 
         ]                                                                             

    def _generate_examples(self, filepath):
        with open(filepath, encoding="utf-8") as f:              
            for id_, line in enumerate(f.readlines()):
                line = line.strip()
                story_num, line_num, event, gen_event, sent, gen_sent, entities = line.split("|||")
                yield id_, {
		    'story_num': story_num,
		    'story_line': line_num,
		    'event': eval(event),
		    'gen_event': eval(gen_event),
		    'sent': sent,
		    'gen_sent': gen_sent,                       
		    'entities': entities,
                }