# Copyright (C) 2012,2013  Codethink Limited
#
# 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; version 2 of the License.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


import cliapp

import morphlib


class BuildPlugin(cliapp.Plugin):

    def enable(self):
        self.app.add_subcommand('build-morphology', self.build_morphology,
                                arg_synopsis='(REPO REF FILENAME)...')

    def disable(self):
        pass

    def build_morphology(self, args):
        '''Build a system, outside of a system branch.

        Command line arguments:

        * `REPO` is a git repository URL.
        * `REF` is a branch or other commit reference in that repository.
        * `FILENAME` is a morphology filename at that ref.

        You probably want `morph build` instead. However, in some
        cases it is more convenient to not have to create a Morph
        workspace and check out the relevant system branch, and only
        just run the build. For those times, this command exists.

        This subcommand does not automatically commit changes to a
        temporary branch, so you can only build from properly committed
        sources that have been pushed to the git server.

        Example:

            morph build-morphology baserock:baserock/morphs \
                master devel-system-x86_64-generic

        '''

        # Raise an exception if there is not enough space
        morphlib.util.check_disk_available(
            self.app.settings['tempdir'],
            self.app.settings['tempdir-min-space'],
            self.app.settings['cachedir'],
            self.app.settings['cachedir-min-space'])

        build_command = morphlib.buildcommand.BuildCommand(self.app)
        build_command = self.app.hookmgr.call('new-build-command',
                                              build_command)
        build_command.build(args)