# 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.
import os

import datasets
import pandas as pd


_CITATION = """\
TBD
"""

_DESCRIPTION = """\
TBD
"""

_HOMEPAGE = "https://cevalbenchmark.com"

_LICENSE = "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License"

_URL = r"https://huggingface.co/datasets/ceval/ceval-exam/resolve/main/ceval_data.tar"

task_list = [
    "computer_network",
    "operating_system",
    "computer_architecture",
    "college_programming",
    "college_physics",
    "college_chemistry",
    "advanced_mathematics",
    "probability_and_statistics",
    "discrete_mathematics",
    "electrical_engineer",
    "metrology_engineer",
    "high_school_mathematics",
    "high_school_physics",
    "high_school_chemistry",
    "high_school_biology",
    "middle_school_mathematics",
    "middle_school_biology",
    "middle_school_physics",
    "middle_school_chemistry",
    "veterinary_medicine",
    "college_economics",
    "business_administration",
    "marxism",
    "mao_zedong_thought",
    "education_science",
    "teacher_qualification",
    "high_school_politics",
    "high_school_geography",
    "middle_school_politics",
    "middle_school_geography",
    "modern_chinese_history",
    "ideological_and_moral_cultivation",
    "logic",
    "law",
    "chinese_language_and_literature",
    "art_studies",
    "professional_tour_guide",
    "legal_professional",
    "high_school_chinese",
    "high_school_history",
    "middle_school_history",
    "civil_servant",
    "sports_science",
    "plant_protection",
    "basic_medicine",
    "clinical_medicine",
    "urban_and_rural_planner",
    "accountant",
    "fire_engineer",
    "environmental_impact_assessment_engineer",
    "tax_accountant",
    "physician",
]


class CevalExamConfig(datasets.BuilderConfig):
    def __init__(self, **kwargs):
        super().__init__(version=datasets.Version("1.0.0"), **kwargs)


class CevalExam(datasets.GeneratorBasedBuilder):
    BUILDER_CONFIGS = [
        CevalExamConfig(
            name=task_name,
        )
        for task_name in task_list
    ]

    def _info(self):
        features = datasets.Features(
            {
                "id":datasets.Value("int32"),
                "question": datasets.Value("string"),
                "A": datasets.Value("string"),
                "B": datasets.Value("string"),
                "C": datasets.Value("string"),
                "D": datasets.Value("string"),
                "answer": datasets.Value("string"),
                "explanation":datasets.Value("string"),
            }
        )
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=features,
            homepage=_HOMEPAGE,
            license=_LICENSE,
            citation=_CITATION,
        )

    def _split_generators(self, dl_manager):
        data_dir = dl_manager.download_and_extract(_URL)
        task_name = self.config.name
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TEST,
                gen_kwargs={
                    "filepath": os.path.join(
                        data_dir, "data","test", f"{task_name}_test.csv"
                    ),
                },
            ),
            datasets.SplitGenerator(
                name=datasets.Split("val"),
                gen_kwargs={
                    "filepath": os.path.join(
                        data_dir,'data',  "val", f"{task_name}_val.csv"
                    ),
                },
            ),
            datasets.SplitGenerator(
                name=datasets.Split("dev"),
                gen_kwargs={
                    "filepath": os.path.join(
                        data_dir, "data", "dev", f"{task_name}_dev.csv"
                    ),
                },
            ),
        ]

    def _generate_examples(self, filepath):
        df = pd.read_csv(filepath,encoding="utf-8")
        for i, instance in enumerate(df.to_dict(orient="records")):
            if "answer" not in instance.keys():
                instance["answer"]=""
            if "explanation" not in instance.keys():
                instance["explanation"]=""
            yield i, instance