# 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 json

import datasets


_CITATION = """\
@InProceedings{huggingface:dataset,
title = {Graffiti},
author={UR
},
year={2023}
}
"""

_DESCRIPTION = """\
Graffiti dataset taken from https://www.graffiti.org/ and https://www.graffiti-database.com/.
"""

_HOMEPAGE = "https://huggingface.co/datasets/artificialhoney/graffiti"

_LICENSE = "Apache License 2.0"

_VERSION = "0.1.0"

_SOURCES = [
    "graffiti.org",
    "graffiti-database.com"
]


class GraffitiConfig(datasets.BuilderConfig):
    """BuilderConfig for Graffiti."""

    def __init__(self, **kwargs):
        """BuilderConfig for Graffiti.
        Args:
          **kwargs: keyword arguments forwarded to super.
        """
        super(GraffitiConfig, self).__init__(**kwargs)


class Graffiti(datasets.GeneratorBasedBuilder):
    """Graffiti dataset taken from https://www.graffiti.org/ and https://www.graffiti-database.com/."""

    BUILDER_CONFIG_CLASS = GraffitiConfig

    BUILDER_CONFIGS = [
        GraffitiConfig(
            name="default",
        ),
    ]

    def _info(self):
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=datasets.Features(
                {
                    "image": datasets.Image(),
                    "text": datasets.Value("string")
                }
            ),
            homepage=_HOMEPAGE,
            license=_LICENSE,
            citation=_CITATION,
            version=_VERSION,
            task_templates=[],
        )

    def _split_generators(self, dl_manager):
        """Returns SplitGenerators."""
        images = []
        metadata = []
        for source in _SOURCES:
            images.append(dl_manager.iter_archive(dl_manager.download("./data/{0}/images.tar.gz".format(source))))
            metadata.append(dl_manager.download("./data/{0}/metadata.jsonl".format(source)))
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={
                    "images": images,
                    "metadata": metadata,
                },
            )
        ]

    def _generate_examples(self, metadata, images):
        idx = 0
        for index, meta in enumerate(metadata):
            m = []
            with open(meta, encoding="utf-8") as f:
                for row in f:
                    m.append(json.loads(row))
            for file_path, file_obj in images[index]:
                data = [x for x in m if file_path.endswith(x["file"])][0]
                text = data["caption"]
                if data["artist"] != None:
                    text += ", with text \"" + data["artist"] + "\""
                    text += ", in the art of \"" + data["artist"] + "\""
                if data["city"] != None:
                    text += ", located in " + data["city"]
                yield idx, {
                        "image": {"path": file_path, "bytes": file_obj.read()},
                        "text": text
                    }
                idx+=1