#!/usr/bin/python
'''
Starts the targetcli CLI shell.

This file is part of targetcli.
Copyright (c) 2011 by RisingTide Systems LLC

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, version 3 (AGPLv3).

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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
Copyright (c) 2011 by RisingTide Systems LLC.
All rights reserved.
'''

from os import getuid
from targetcli import UIRoot
from rtslib import RTSLibError
from configshell import ConfigShell
import sys
from targetcli import __version__ as targetcli_version

class TargetCLI(ConfigShell):
    default_prefs = {'color_path': 'magenta',
                     'color_command': 'cyan',
                     'color_parameter': 'magenta',
                     'color_keyword': 'cyan',
                     'completions_in_columns': True,
                     'logfile': None,
                     'loglevel_console': 'info',
                     'loglevel_file': 'debug9',
                     'color_mode': True,
                     'prompt_length': 30,
                     'tree_max_depth': 0,
                     'tree_status_mode': True,
                     'tree_round_nodes': True,
                     'tree_show_root': True,
                     'export_backstore_name_as_model': True,
                     'auto_enable_tpgt': True,
                     'auto_add_mapped_luns': True,
                     'auto_cd_after_create': False,
                     'auto_save_on_exit': True,
                    }

def main():
    '''
    Start the targetcli shell.
    '''
    if getuid() == 0:
        is_root = True
    else:
        is_root = False

    shell = TargetCLI('~/.targetcli')

    root_node = UIRoot(shell, as_root=is_root)

    try:
        root_node.refresh()
    except RTSLibError, error:
        shell.con.display(shell.con.render_text(str(error), 'red'))

    if len(sys.argv) > 1:
        shell.run_cmdline(" ".join(sys.argv[1:]))
        sys.exit(0)

    shell.con.display("targetcli shell version %s\n"
                      "Copyright 2011 by RisingTide Systems LLC and others.\n"
                      "For help on commands, type 'help'.\n"
                      % targetcli_version)
    if not is_root:
        shell.con.display("You are not root, disabling privileged commands.\n")

    shell.run_interactive()
    if shell.prefs['auto_save_on_exit'] and is_root:
        shell.log.info("Global pref auto_save_on_exit=true")
        root_node.ui_command_saveconfig()


if __name__ == "__main__":
    main()