#!/usr/bin/env python
#
# kas - setup tool for bitbake based projects
#
# Copyright (c) Siemens AG, 2017
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""
    This module is the main entry point for kas, setup tool for bitbake based
    projects
"""

import argparse
import traceback
import logging
import sys
import os
import pkg_resources

try:
    import colorlog
    HAVE_COLORLOG = True
except ImportError:
    HAVE_COLORLOG = False

from .build import Build
from .shell import Shell
from . import __version__

__license__ = 'MIT'
__copyright__ = 'Copyright (c) Siemens AG, 2017'


def create_logger():
    """
        Setup the logging environment
    """
    log = logging.getLogger()  # root logger
    log.setLevel(logging.INFO)
    format_str = '%(asctime)s - %(levelname)-8s - %(message)s'
    date_format = '%Y-%m-%d %H:%M:%S'
    if HAVE_COLORLOG and os.isatty(2):
        cformat = '%(log_color)s' + format_str
        colors = {'DEBUG': 'reset',
                  'INFO': 'reset',
                  'WARNING': 'bold_yellow',
                  'ERROR': 'bold_red',
                  'CRITICAL': 'bold_red'}
        formatter = colorlog.ColoredFormatter(cformat, date_format,
                                              log_colors=colors)
    else:
        formatter = logging.Formatter(format_str, date_format)
    stream_handler = logging.StreamHandler()
    stream_handler.setFormatter(formatter)
    log.addHandler(stream_handler)
    return logging.getLogger(__name__)


def kas(argv):
    """
        The main entry point of kas.
    """
    create_logger()

    parser = argparse.ArgumentParser(description='Steer ebs-yocto builds')

    parser.add_argument('--version', action='version',
                        version='%(prog)s ' + __version__)

    parser.add_argument('-d', '--debug',
                        action='store_true',
                        help='Enable debug logging')

    subparser = parser.add_subparsers(help='sub command help', dest='cmd')
    sub_cmds = [Build(subparser), Shell(subparser)]

    for plugin in pkg_resources.iter_entry_points('kas.plugins'):
        cmd = plugin.load()
        sub_cmds.append(cmd(subparser))

    args = parser.parse_args(argv)

    if args.debug:
        logging.getLogger().setLevel(logging.DEBUG)

    for cmd in sub_cmds:
        if cmd.run(args):
            return

    parser.print_help()


def main():
    """
        The main function that operates as a wrapper around kas.
    """
    # pylint: disable=broad-except

    try:
        sys.exit(kas(sys.argv[1:]))
    except Exception as err:
        logging.error('%s', err)
        traceback.print_exc()
        sys.exit(1)


if __name__ == '__main__':
    main()