import csv
import json
import os

from swarms.utils.pdf_to_text import pdf_to_text


def csv_to_text(file: str) -> str:
    """
    Converts a CSV file to text format.

    Args:
        file (str): The path to the CSV file.

    Returns:
        str: The text representation of the CSV file.

    Raises:
        FileNotFoundError: If the file does not exist.
        IOError: If there is an error reading the file.

    """
    with open(file) as file:
        reader = csv.reader(file)
        data = list(reader)
    return str(data)


def json_to_text(file: str) -> str:
    """
    Converts a JSON file to text format.

    Args:
        file (str): The path to the JSON file.

    Returns:
        str: The text representation of the JSON file.

    Raises:
        FileNotFoundError: If the file does not exist.
        IOError: If there is an error reading the file.

    """
    with open(file) as file:
        data = json.load(file)
    return json.dumps(data)


def txt_to_text(file: str) -> str:
    """
    Reads a text file and returns its content as a string.

    Args:
        file (str): The path to the text file.

    Returns:
        str: The content of the text file.

    Raises:
        FileNotFoundError: If the file does not exist.
        IOError: If there is an error reading the file.

    """
    with open(file) as file:
        data = file.read()
    return data


def md_to_text(file: str) -> str:
    """
    Reads a Markdown file and returns its content as a string.

    Args:
        file (str): The path to the Markdown file.

    Returns:
        str: The content of the Markdown file.

    Raises:
        FileNotFoundError: If the file does not exist.
        IOError: If there is an error reading the file.

    """
    if not os.path.exists(file):
        raise FileNotFoundError(
            f"No such file or directory: '{file}'"
        )
    with open(file) as file:
        data = file.read()
    return data


def data_to_text(file: str) -> str:
    """
    Converts the given data file to text format.

    Args:
        file (str): The path to the data file.

    Returns:
        str: The text representation of the data file.

    Raises:
        FileNotFoundError: If the file does not exist.
        IOError: If there is an error reading the file.

    Examples:
        >>> data_to_text("data.csv")
        'This is the text representation of the data file.'

    """
    if not os.path.exists(file):
        raise FileNotFoundError(f"File not found: {file}")
    try:
        _, ext = os.path.splitext(file)
        ext = (
            ext.lower()
        )  # Convert extension to lowercase for case-insensitive comparison
        if ext == ".csv":
            return csv_to_text(file)
        elif ext == ".json":
            return json_to_text(file)
        elif ext == ".txt":
            return txt_to_text(file)
        elif ext == ".pdf":
            return pdf_to_text(file)
        elif ext == ".md":
            return md_to_text(file)
        else:
            # Check if the file is a binary file (like an image)
            if ext in [".png", ".jpg", ".jpeg", ".gif", ".bmp"]:
                # Skip binary files
                return None
            else:
                with open(file) as file:
                    data = file.read()
                return data
    except Exception as e:
        raise OSError(f"Error reading file: {file}") from e