#!/usr/bin/env python3
# Copyright (c) 2010 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Display active git branches and code changes in a chromiumos workspace."""

import gclient_utils
import os
import re
import subprocess
import sys


def show_dir(full_name, relative_name, color):
    """Display active work in a single git repo."""
    def show_name():
        """Display the directory name."""

        if color:
            sys.stdout.write('========= %s[44m%s[37m%s%s[0m ========\n' %
                             (chr(27), chr(27), relative_name, chr(27)))
        else:
            sys.stdout.write('========= %s ========\n' % relative_name)

    lines_printed = 0

    cmd = ['git', 'branch', '-v']
    if color:
        cmd.append('--color')

    branch = subprocess.Popen(cmd, cwd=full_name,
                              stdout=subprocess.PIPE).communicate()[0].rstrip()

    if len(branch.splitlines()) > 1:
        if lines_printed == 0:
            show_name()
        lines_printed += 1
        print(branch)

    status = subprocess.Popen(['git', 'status'],
                              cwd=full_name,
                              stdout=subprocess.PIPE).communicate()[0].rstrip()

    if len(status.splitlines()) > 2:
        if lines_printed == 0:
            show_name()
        if lines_printed == 1:
            print('---------------')
        print(status)


def main():
    """Take no arguments."""

    color = False

    if os.isatty(1):
        color = True

    base = os.path.basename(os.getcwd())
    root, entries = gclient_utils.GetGClientRootAndEntries()

    # which entries map to a git repos?
    raw = [k for k, v in entries.items() if v and not re.search('svn', v)]
    raw.sort()

    # We want to use the full path for testing, but we want to use the relative
    # path for display.
    fulldirs = [os.path.normpath(os.path.join(root, p)) for p in raw]
    reldirs = [re.sub('^' + base, '.', p) for p in raw]

    for full_path, relative_path in zip(fulldirs, reldirs):
        show_dir(full_path, relative_path, color)


if __name__ == '__main__':
    main()