#
# (c) 2016 Red Hat Inc.
#
# This file is part of Ansible
#
# Ansible 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 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 Ansible.  If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import os
import sys
import copy

from ansible.plugins.action.normal import ActionModule as _ActionModule
from ansible.utils.path import unfrackpath
from ansible.plugins import connection_loader
from ansible.compat.six import iteritems
from ansible.module_utils.vyos import vyos_argument_spec
from ansible.module_utils.basic import AnsibleFallbackNotFound
from ansible.module_utils._text import to_bytes

class ActionModule(_ActionModule):

    def run(self, tmp=None, task_vars=None):

        pc = copy.deepcopy(self._play_context)
        pc.connection = 'network_cli'
        pc.port = provider['port'] or self._play_context.port
        pc.remote_user = provider['username'] or self._play_context.connection_user
        pc.password = provider['password'] or self._play_context.password

        socket_path = self._get_socket_path(pc)
        if not os.path.exists(socket_path):
            # start the connection if it isn't started
            connection = self._shared_loader_obj.connection_loader.get('persistent', pc, sys.stdin)
            connection.exec_command('EXEC: show version')

        task_vars['ansible_socket'] = socket_path

        return super(ActionModule, self).run(tmp, task_vars)

    def _get_socket_path(self, play_context):
        ssh = connection_loader.get('ssh', class_only=True)
        cp = ssh._create_control_path(play_context.remote_addr, play_context.port, play_context.remote_user)
        path = unfrackpath("$HOME/.ansible/pc")
        return cp % dict(directory=path)

    def load_provider(self):
        provider = self._task.args.get('provider', {})
        for key, value in iteritems(eos_argument_spec):
            if key in self._task.args:
                provider[key] = self._task.args[key]
            elif 'fallback' in value:
                provider[key] = self._fallback(value['fallback'])
            elif key not in provider:
                provider[key] = None
        self._task.args['provider'] = provider

    def _fallback(self, fallback):
        strategy = fallback[0]
        args = []
        kwargs = {}

        for item in fallback[1:]:
            if isinstance(item, dict):
                kwargs = item
            else:
                args = item
        try:
            return strategy(*args, **kwargs)
        except AnsibleFallbackNotFound:
            pass