#  -*- coding: utf-8 -*-
# *****************************************************************************
#
# 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; either version 2 of the License, or (at your option) any later
# version.
#
# 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.,
# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# Module authors:
#   Markus Zolliker <markus.zolliker@psi.ch>
#
# *****************************************************************************
"""start/stop/list of services

this code is currently used:

- from NICOS to start and stop frappy servers
- from a script allowing to start/stop/list (and more) multiple frappy and nicos servers
"""

from servicemanager.base import ServiceManager, ServiceDown, UsageError, get_config
from servicemanager.nicosman import NicosManager
from servicemanager.seaman import SeaManager
from servicemanager.frappyman import FrappyManager


class SewebManager(ServiceManager):
    group = 'seweb'
    services = ('',)
    USAGE = """
    Usage:

      seaweb list [instance]
      seaweb start <instance>
      seaweb restart <instance>
      seaweb stop <instance>

      %s
    """


all = NicosManager, FrappyManager, SeaManager, SewebManager


def run(group, arglist):
    try:
        parser = get_config()
        defaults = parser['DEFAULT']
        managers = {cls.group: cls() for cls in all if cls.group + '_command' in defaults}
        serv = managers[group]
        # args = dict(action='gui', ins=serv.main_ins)
        args = {}
        guessed_args = []
        extra = []

        arg_is = {
           'action': lambda arg: hasattr(serv, 'do_' + arg),
           'ins': lambda arg: arg in serv.info or arg == 'all' or serv.wildcard(arg),
           'service': lambda arg: arg in serv.services,
        }

        for kind in 'action', 'ins', 'service':
            if arglist and arg_is[kind](arglist[0]):  # arg is of expected kind
                args[kind] = arglist.pop(0)
                continue
            if guessed_args and guessed_args[-1][0] == kind:  # last arg was skipped
                args[kind] = guessed_args.pop()[1]
                continue
            if not arglist:
                break
            arg = arglist.pop(0)
            for kind, is_kind in arg_is.items():
                if is_kind(arg):
                    guessed_args.append((kind, arg))
                    break
            else:
                extra.append(arg)

        args.update(guessed_args)
        args.setdefault('action', 'gui')
        if serv.main_ins:
            args.setdefault('ins', serv.main_ins)
        if guessed_args:
            args.setdefault('action', 'gui')
            print('do you mean:\n   %s %s %s %s %s' %
                  (group, args.get('action', ''), args.get('ins', ''), args.get('service', ''), ' '.join(extra)))
        else:            
            try:
                serv.action(args['action'], *serv.treat_args(args, extra + arglist))
            except AttributeError:
                raise
    except UsageError as e:
        serv.do_help()
        print('ERROR:', str(e))