#!/usr/bin/env python3
# -*- coding: utf-8 -*-


def markdown(timestamp, filename, jid, message):
    """
    Log message to file.

    Parameters
    ----------
    timestamp : str
        Time stamp.
    filename : str
        Jabber ID as name of file.
    jid : str
        Jabber ID.
    message : str
        Message content.

    Returns
    -------
    None.
    
    """
    with open(filename + '.md', 'a') as file:
        # entry = "{} {}:\n{}\n\n".format(timestamp, jid, message)
        entry = (
        "## {}\n"
        "### {}\n\n"
        "{}\n\n").format(jid, timestamp, message)
        file.write(entry)