import os
import shutil
import tempfile
import uuid
import boto3
from botocore.exceptions import BotoCoreError, ClientError
from starlette.responses import JSONResponse

STORJ_ACCESS_KEY = os.environ.get('STORJ_ACCESS_KEY')
STORJ_SECRET_KEY = os.environ.get('STORJ_SECRET_KEY')
STORJ_END_POINT = os.environ.get('STORJ_END_POINT')
STORJ_BUCKET_NAME = os.environ.get('STORJ_BUCKET_NAME')
CDN_DOMAIN = os.environ.get('CDN_DOMAIN')


async def upload_handler(request):
    form = await request.form()
    file = form.get('file')

    if file is None:
        return JSONResponse({'error': 'No file uploaded'}, status_code=400)

    file_name, file_extension = os.path.splitext(file.filename)

    key = 'files/' + str(uuid.uuid4()) + file_extension

    # Create an S3 client with Storj configuration
    s3 = boto3.client('s3',
                      aws_access_key_id=STORJ_ACCESS_KEY,
                      aws_secret_access_key=STORJ_SECRET_KEY,
                      endpoint_url=STORJ_END_POINT)

    try:
        # Save the uploaded file to a temporary file
        with tempfile.NamedTemporaryFile() as tmp_file:
            shutil.copyfileobj(file.file, tmp_file)

            s3.upload_file(
                Filename=tmp_file.name,
                Bucket=STORJ_BUCKET_NAME,
                Key=key,
                ExtraArgs={
                    "ContentType": file.content_type
                }
            )

        url = 'https://' + CDN_DOMAIN + '/' + key

        return JSONResponse({'url': url, 'originalFilename': file.filename})

    except (BotoCoreError, ClientError) as e:
        print(e)
        return JSONResponse({'error': 'Failed to upload file'}, status_code=500)