import pathlib
import uuid

import boto3
from fastapi import HTTPException, UploadFile, status

from app.core import settings

ALLOWED_CONTENT_TYPES = {
    "image/jpeg": ".jpg",
    "image/png": ".png",
    "image/webp": ".webp",
}


def s3_client():
    return boto3.client(
        "s3",
        endpoint_url=settings.s3_endpoint_url,
        aws_access_key_id=settings.s3_access_key_id,
        aws_secret_access_key=settings.s3_secret_access_key,
        region_name=settings.s3_region,
    )


async def upload_catalog_image(
    file: UploadFile,
    user_id: uuid.UUID,
    entity_type: str,
) -> dict[str, str]:
    if file.content_type not in ALLOWED_CONTENT_TYPES:
        raise HTTPException(
            status_code=status.HTTP_415_UNSUPPORTED_MEDIA_TYPE,
            detail="Only JPEG, PNG and WEBP images are supported",
        )

    content = await file.read()
    if len(content) > settings.max_upload_bytes:
        raise HTTPException(
            status_code=status.HTTP_413_REQUEST_ENTITY_TOO_LARGE,
            detail="File is too large",
        )

    extension = ALLOWED_CONTENT_TYPES[file.content_type]
    original_stem = pathlib.Path(file.filename or "image").stem[:48]
    object_key = f"users/{user_id}/{entity_type}/pending/{uuid.uuid4()}-{original_stem}{extension}"

    s3_client().put_object(
        Bucket=settings.s3_bucket,
        Key=object_key,
        Body=content,
        ContentType=file.content_type,
    )
    public_base = settings.s3_public_base_url.rstrip("/")
    return {
        "image_s3_key": object_key,
        "image_s3_url": f"{public_base}/{settings.s3_bucket}/{object_key}",
    }