"""
data_export module
This module provides functions to export data to various file formats.
"""

import csv
import json
import xml.etree.ElementTree as ET
from typing import Any, Dict, List

from .logging import get_logger

logger = get_logger(__name__)


def export_to_json(data: List[Dict[str, Any]], filename: str) -> None:
    """
    Export data to a JSON file.

    :param data: List of dictionaries containing the data to export
    :param filename: Name of the file to save the JSON data
    """
    with open(filename, "w", encoding="utf-8") as f:
        json.dump(data, f, ensure_ascii=False, indent=4)
    logger.info("Data exported to %s", filename)


def export_to_csv(data: List[Dict[str, Any]], filename: str) -> None:
    """
    Export data to a CSV file.

    :param data: List of dictionaries containing the data to export
    :param filename: Name of the file to save the CSV data
    """
    if not data:
        logger.warning("No data to export")
        return

    keys = data[0].keys()
    with open(filename, "w", newline="", encoding="utf-8") as f:
        writer = csv.DictWriter(f, fieldnames=keys)
        writer.writeheader()
        writer.writerows(data)
    logger.info("Data exported to %s", filename)


def export_to_xml(
    data: List[Dict[str, Any]], filename: str, root_element: str = "data"
) -> None:
    """
    Export data to an XML file.

    :param data: List of dictionaries containing the data to export
    :param filename: Name of the file to save the XML data
    :param root_element: Name of the root element in the XML structure
    """
    root = ET.Element(root_element)
    for item in data:
        element = ET.SubElement(root, "item")
        for key, value in item.items():
            sub_element = ET.SubElement(element, key)
            sub_element.text = str(value)

    tree = ET.ElementTree(root)
    tree.write(filename, encoding="utf-8", xml_declaration=True)
    logger.info("Data exported to %s", filename)