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# Copyright (C) 2005-2011 Aaron Bentley <abentley@panoramicfeedback.com>
#                         Chris Ball <cjb@laptop.org>
#                         Gianluca Montecchi <gian@grys.it>
#                         W. Trevor King <wking@drexel.edu>
#
# This file is part of Bugs Everywhere.
#
# Bugs Everywhere 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.
#
# Bugs Everywhere 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 Bugs Everywhere.  If not, see <http://www.gnu.org/licenses/>.

import os.path

import libbe
import libbe.bugdir
import libbe.command
import libbe.storage

class Init (libbe.command.Command):
    """Create an on-disk bug repository

    >>> import os, sys
    >>> import libbe.storage.vcs
    >>> import libbe.storage.vcs.base
    >>> import libbe.util.utility
    >>> io = libbe.command.StringInputOutput()
    >>> io.stdout = sys.stdout
    >>> ui = libbe.command.UserInterface(io=io)
    >>> cmd = Init()

    >>> dir = libbe.util.utility.Dir()
    >>> vcs = libbe.storage.vcs.vcs_by_name('None')
    >>> vcs.repo = dir.path
    >>> try:
    ...     vcs.connect()
    ... except libbe.storage.ConnectionError:
    ...     'got error'
    'got error'
    >>> ui.storage_callbacks.set_unconnected_storage(vcs)
    >>> ui.run(cmd)
    No revision control detected.
    BE repository initialized.
    >>> bd = libbe.bugdir.BugDir(vcs)
    >>> vcs.disconnect()
    >>> vcs.connect()
    >>> bugdir = libbe.bugdir.BugDir(vcs, from_storage=True)
    >>> vcs.disconnect()
    >>> vcs.destroy()
    >>> dir.cleanup()

    >>> dir = libbe.util.utility.Dir()
    >>> vcs = libbe.storage.vcs.installed_vcs()
    >>> vcs.repo = dir.path
    >>> vcs._vcs_init(vcs.repo)
    >>> ui.storage_callbacks.set_unconnected_storage(vcs)
    >>> if vcs.name in libbe.storage.vcs.base.VCS_ORDER:
    ...     ui.run(cmd) # doctest: +ELLIPSIS
    ... else:
    ...     vcs.init()
    ...     vcs.connect()
    ...     print 'Using ... for revision control.\\nDirectory initialized.'
    Using ... for revision control.
    BE repository initialized.
    >>> vcs.disconnect()
    >>> vcs.connect()
    >>> bugdir = libbe.bugdir.BugDir(vcs, from_storage=True)
    >>> vcs.disconnect()
    >>> vcs.destroy()
    >>> dir.cleanup()
    """
    name = 'init'

    def __init__(self, *args, **kwargs):
        libbe.command.Command.__init__(self, *args, **kwargs)

    def _run(self, **params):
        storage = self._get_unconnected_storage()
        if not os.path.isdir(storage.repo):
            raise libbe.command.UserError(
                'No such directory: %s' % storage.repo)
        try:
            storage.connect()
            raise libbe.command.UserError(
                'Directory already initialized: %s' % storage.repo)
        except libbe.storage.ConnectionError:
            pass
        storage.init()
        storage.connect()
        self.ui.storage_callbacks.set_storage(storage)
        bd = libbe.bugdir.BugDir(storage, from_storage=False)
        self.ui.storage_callbacks.set_bugdir(bd)
        if bd.storage.name is not 'None':
            print >> self.stdout, \
                'Using %s for revision control.' % storage.name
        else:
            print >> self.stdout, 'No revision control detected.'
        print >> self.stdout, 'BE repository initialized.'

    def _long_help(self):
        return """
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 vcs_name" to change the vcs being used.

The directory defaults to your current working directory, but you can
change that by passing the --repo option to be
  $ be --repo path/to/new/bug/root init

When initialized in a version-controlled directory, BE sinks to the
version-control root.  In that case, the BE repository will be created
under that directory, rather than the current directory or the one
passed in --repo.  Consider the following tree, versioned in Git.
  ~
  `--projectX
     |-- .git
     `-- src
Calling
  ~$ be --repo ./projectX/src init
will create the BE repository rooted in projectX:
  ~
  `--projectX
     |-- .be
     |-- .git
     `-- src
"""