112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
import os
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import uuid
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import aiofiles
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import magic
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from fastapi import HTTPException, UploadFile, status
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from sqlalchemy.ext.asyncio import AsyncSession
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from starlette.responses import FileResponse
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from werkzeug.utils import secure_filename
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from app.application.contest_carousel_photos_repository import ContestCarouselPhotosRepository
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from app.domain.entities.contest_carousel_photo import ContestCarouselPhotoEntity
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from app.domain.models import ContestCarouselPhoto
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class ContestCarouselPhotosService:
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def __init__(self, db: AsyncSession):
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self.contest_carousel_photos_repository = ContestCarouselPhotosRepository(db)
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async def get_photo_file_by_id(self, photo_id: int) -> FileResponse:
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photo = await self.contest_carousel_photos_repository.get_by_id(photo_id)
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if not photo:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Photo not found")
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if not os.path.exists(photo.file_path):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="File not found on disk")
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return FileResponse(
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photo.file_path,
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media_type=self.get_media_type(photo.file_path),
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filename=os.path.basename(photo.file_path),
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)
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async def get_photos_by_contest_id(self, contest_id: int) -> list[ContestCarouselPhotoEntity]:
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photos = await self.contest_carousel_photos_repository.get_by_contest_id(contest_id)
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return [
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self.model_to_entity(photo)
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for photo in photos
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]
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async def upload_photo(self, contest_id: int, file: UploadFile):
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self.validate_file_type(file)
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filename = self.generate_filename(file)
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file_path = await self.save_file(file, filename=filename)
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photo = ContestCarouselPhoto(
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file_path=file_path,
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number=0,
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contest_id=contest_id
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)
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return self.model_to_entity(
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await self.contest_carousel_photos_repository.create(photo)
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)
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async def delete_photo(self, photo_id: int):
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photo = await self.contest_carousel_photos_repository.get_by_id(photo_id)
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if not photo:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Photo not found")
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if os.path.exists(photo.file_path):
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os.remove(photo.file_path)
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return self.model_to_entity(
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await self.contest_carousel_photos_repository.delete(photo)
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)
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async def save_file(self, file: UploadFile, filename: str, upload_dir: str = "uploads/contest_carousel_photos") -> str:
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os.makedirs(upload_dir, exist_ok=True)
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file_path = os.path.join(upload_dir, filename)
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async with aiofiles.open(file_path, 'wb') as out_file:
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content = await file.read()
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await out_file.write(content)
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return file_path
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@staticmethod
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def validate_file_type(file: UploadFile):
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contents = file.file.read(1024)
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file.file.seek(0)
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mime = magic.Magic(mime=True)
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file_type = mime.from_buffer(contents)
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if file_type not in ["image/jpeg", "image/png"]:
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raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Invalid file type. Only JPEG and PNG images are allowed.")
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@staticmethod
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def generate_filename(file: UploadFile):
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return secure_filename(f"{uuid.uuid4()}_{file.filename}")
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@staticmethod
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def model_to_entity(photo_model: ContestCarouselPhoto) -> ContestCarouselPhotoEntity:
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return ContestCarouselPhotoEntity(
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id=photo_model.id,
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file_path=photo_model.file_path,
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number=photo_model.number,
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contest_id=photo_model.contest_id,
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)
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@staticmethod
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def get_media_type(file_path: str) -> str:
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extension = file_path.split('.')[-1].lower()
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if extension in ['jpeg', 'jpg']:
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return "image/jpeg"
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elif extension == 'png':
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return "image/png"
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else:
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return "application/octet-stream"
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