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path: root/chocula/directories/ezb.py
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from typing import Iterable, Optional
import json

from chocula.util import clean_str
from chocula.common import DirectoryLoader
from chocula.database import DirectoryInfo, HomepageUrl


class EzbLoader(DirectoryLoader):
    """
    CSV Columns:

    """

    source_slug = "ezb"

    def open_file(self) -> Iterable:
        return open(self.config.ezb.filepath, "r")

    def parse_record(self, row) -> Optional[DirectoryInfo]:

        if not row:
            return None
        row = json.loads(row)

        info = DirectoryInfo(
            directory_slug=self.source_slug,
            issne=row.get("issne"),
            issnp=row.get("issnp"),
            custom_id=row["ezb_id"],
            name=clean_str(row["title"]),
            publisher=clean_str(row.get("publisher")),
        )

        info.extra = dict()
        for k in (
            "ezb_color",
            "subjects",
            "keywords",
            "zdb_id",
            "first_volume",
            "first_issue",
            "first_year",
            "appearance",
            "costs",
        ):
            if row.get(k):
                info.extra[k] = row[k]

        url = HomepageUrl.from_url(row.get("url"))
        if url:
            info.homepage_urls.append(url)

        return info