import csv
import io
from enum import Enum
from typing import List, Dict


class Utilities:
    def __init__(self, logger=None):
        pass

    @staticmethod
    def get_s3_path(uri):
        parts = uri.replace("s3://", "").split("/")
        bucket = parts.pop(0)
        key = "/".join(parts)
        return bucket, key

    @staticmethod
    def create_byte_stream(data: List[Dict[str, str]]) -> bytes:
        if not data:
            return b""

        output = io.StringIO()

        headers = list(data[0].keys())

        writer = csv.DictWriter(output, fieldnames=headers)
        writer.writeheader()
        writer.writerows(data)

        csv_string = output.getvalue()

        return csv_string.encode("utf-8")