Files
book_library_server/fastapi_book_server/app/services/translation.py
2021-11-14 10:38:47 +03:00

50 lines
1.6 KiB
Python

from typing import Union
from fastapi import HTTPException, status
from app.serializers.translation import CreateTranslation, CreateRemoteTranslation
from app.models import Translation as TranslationDB, Source as SourceDB, Book as BookDB, Author as AuthorDB
class TranslationCreator:
@classmethod
def _raise_bad_request(cls):
raise HTTPException(status.HTTP_404_NOT_FOUND)
@classmethod
async def _create_translation(cls, data: CreateTranslation) -> TranslationDB:
return await TranslationDB.objects.create(
**data.dict()
)
@classmethod
async def _create_remote_translation(cls, data: CreateRemoteTranslation) -> TranslationDB:
source = await SourceDB.objects.get_or_none(id=data.source)
if source is None:
cls._raise_bad_request()
book = await BookDB.objects.get_or_none(source__id=source.id, remote_id=data.remote_book)
if book is None:
cls._raise_bad_request()
translator = await AuthorDB.objects.get_or_none(source__id=source.id, remote_id=data.remote_translator)
if translator is None:
cls._raise_bad_request()
return await TranslationDB.objects.create(
book=book.id,
translator=translator.id,
position=data.position,
)
@classmethod
async def create(cls, data: Union[CreateTranslation, CreateRemoteTranslation]) -> TranslationDB:
if isinstance(data, CreateTranslation):
return await cls._create_translation(data)
if isinstance(data, CreateRemoteTranslation):
return await cls._create_remote_translation(data)