# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (c) 2013, Intel Corporation.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# DESCRIPTION
# This implements the 'direct' imager plugin class for 'wic'
#
# AUTHORS
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
#

from time import strftime

from os.path import basename, splitext
from wic.utils import errors
from wic.ksparser import KickStart, KickStartError
from wic import msger

import wic.imager.direct as direct
from wic.pluginbase import ImagerPlugin

class DirectPlugin(ImagerPlugin):
    """
    Install a system into a file containing a partitioned disk image.

    An image file is formatted with a partition table, each partition
    created from a rootfs or other OpenEmbedded build artifact and dd'ed
    into the virtual disk. The disk image can subsequently be dd'ed onto
    media and used on actual hardware.
    """

    name = 'direct'

    @classmethod
    def __rootfs_dir_to_dict(cls, rootfs_dirs):
        """
        Gets a string that contain 'connection=dir' splitted by
        space and return a dict
        """
        krootfs_dir = {}
        for rootfs_dir in rootfs_dirs.split(' '):
            key, val = rootfs_dir.split('=')
            krootfs_dir[key] = val

        return krootfs_dir

    @classmethod
    def do_create(cls, opts, *args):
        """
        Create direct image, called from creator as 'direct' cmd
        """
        if len(args) != 8:
            raise errors.Usage("Extra arguments given")

        native_sysroot = args[0]
        kernel_dir = args[1]
        bootimg_dir = args[2]
        rootfs_dir = args[3]

        ksconf = args[4]

        image_output_dir = args[5]
        oe_builddir = args[6]
        compressor = args[7]

        try:
            ksobj = KickStart(ksconf)
        except KickStartError as err:
            msger.error(str(err))

        image_name = "%s-%s" % (splitext(basename(ksconf))[0],
                          strftime("%Y%m%d%H%M"))
        krootfs_dir = cls.__rootfs_dir_to_dict(rootfs_dir)

        creator = direct.DirectImageCreator(image_name,
                                            ksobj,
                                            oe_builddir,
                                            image_output_dir,
                                            krootfs_dir,
                                            bootimg_dir,
                                            kernel_dir,
                                            native_sysroot,
                                            compressor,
                                            opts.bmap)
        try:
            creator.create()
            creator.assemble()
            creator.finalize()
            creator.print_outimage_info()

        except errors.CreatorError:
            raise
        finally:
            creator.cleanup()

        return 0