#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Generates potential ChangeLog file contents from commit messages."""

# Copyright (c) 2010-2014 Jeremy Stanley <fungi@yuggoth.org>. Permission
# to use, copy, modify, and distribute this software is granted under
# terms provided in the LICENSE file distributed with this software.

import time

import git

copyright = """\
Copyright (c) 2004-2014 Jeremy Stanley <fungi@yuggoth.org>. Permission to
use, copy, modify, and distribute this software is granted under terms
provided in the LICENSE file distributed with this software.

"""

emacsinfo = "\f" + """
Local Variables:
mode: change-log
coding: utf-8
left-margin: 8
fill-column: 76
version-control: never
End:\
"""

generated = ""
for commit in git.Repo().log():
    header = "%s  %s  <%s>" % (
        time.strftime("%Y-%m-%d %H:%M:%S UTC", commit.authored_date),
        commit.author.name,
        commit.author.email
    )
    comments = ""
    for line in commit.message.split("\n")[1:]:
        if line:
            line = "\t%s" % line
        if line.startswith("\t*"):
            line = "\n%s" % line
        comments += "%s\n" % line
    generated += "%s\n%s\n" % (header, comments)
print("%s%s%s" % (generated, copyright, emacsinfo))