import csv
import io
from typing import List, Dict
from obfuscator.logger import get_logger

logger = get_logger("CSVWRITER")


class DataWriter:
    def __init__(self):
        pass

    def create_byte_stream(self, data: List[Dict[str, str]]) -> bytes:
        if not data:
            logger.error("Invalid or empty data was provided to write")
            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")