# Copyright (C) 2005-2009 Aaron Bentley and Panometrics, Inc.
#                         W. Trevor King <wking@drexel.edu>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
"""Assign the root directory for bug tracking"""
import os.path
from libbe import cmdutil, bugdir
__desc__ = __doc__

def execute(args, test=False):
    """
    >>> from libbe import utility, rcs
    >>> import os
    >>> dir = utility.Dir()
    >>> try:
    ...     bugdir.BugDir(dir.path)
    ... except bugdir.NoBugDir, e:
    ...     True
    True
    >>> execute(['--root', dir.path], test=True)
    No revision control detected.
    Directory initialized.
    >>> del(dir)

    >>> dir = utility.Dir()
    >>> os.chdir(dir.path)
    >>> rcs = rcs.installed_rcs()
    >>> rcs.init('.')
    >>> print rcs.name
    Arch
    >>> execute([], test=True)
    Using Arch for revision control.
    Directory initialized.
    >>> rcs.cleanup()

    >>> try:
    ...     execute(['--root', '.'], test=True)
    ... except cmdutil.UserError, e:
    ...     str(e).startswith("Directory already initialized: ")
    True
    >>> execute(['--root', '/highly-unlikely-to-exist'], test=True)
    Traceback (most recent call last):
    UserError: No such directory: /highly-unlikely-to-exist
    >>> os.chdir('/')
    """
    parser = get_parser()
    options, args = parser.parse_args(args)
    cmdutil.default_complete(options, args, parser)
    if len(args) > 0:
        raise cmdutil.UsageError
    try:
        bd = bugdir.BugDir(options.root_dir, from_disk=False,
                           sink_to_existing_root=False,
                           assert_new_BugDir=True,
                           manipulate_encodings=not test)
    except bugdir.NoRootEntry:
        raise cmdutil.UserError("No such directory: %s" % options.root_dir)
    except bugdir.AlreadyInitialized:
        raise cmdutil.UserError("Directory already initialized: %s" % options.root_dir)
    bd.save()
    if bd.rcs.name is not "None":
        print "Using %s for revision control." % bd.rcs.name
    else:
        print "No revision control detected."
    print "Directory initialized."

def get_parser():
    parser = cmdutil.CmdOptionParser("be init")
    parser.add_option("-r", "--root", metavar="DIR", dest="root_dir",
                      help="Set root dir to something other than the current directory.",
                      default=".")
    return parser

longhelp="""
This command initializes Bugs Everywhere support for the specified directory
and all its subdirectories.  It will auto-detect any supported revision control
system.  You can use "be set rcs_name" to change the rcs being used.

The directory defaults to your current working directory.

It is usually a good idea to put the Bugs Everywhere root at the source code
root, but you can put it anywhere.  If you root Bugs Everywhere in a
subdirectory, then only bugs created in that subdirectory (and its children)
will appear there.
"""

def help():
    return get_parser().help_str() + longhelp