# coding: utf-8
# Copyright 2018, Yannig Perré
#
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
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# this list of conditions and the following disclaimer in the documentation
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from __future__ import absolute_import, division, print_function
__metaclass__ = type

import os
import sys

import ansible.errors

try:
    import ansible_mitogen
except ImportError:
    sys.path.insert(0, os.path.abspath(os.path.join(__file__, '../../../..')))

import ansible_mitogen.connection
import ansible_mitogen.loaders


class Connection(ansible_mitogen.connection.Connection):
    transport = 'kubectl'
    (vanilla_class, load_context) = ansible_mitogen.loaders.connection_loader__get_with_context(
        'kubectl',
        class_only=True,
    )

    not_supported_msg = (
        'The "mitogen_kubectl" plug-in requires a version of Ansible '
        'that ships with the "kubectl" connection plug-in.'
    )

    def __init__(self, *args, **kwargs):
        if not Connection.vanilla_class:
            raise ansible.errors.AnsibleConnectionFailure(self.not_supported_msg)
        super(Connection, self).__init__(*args, **kwargs)

    def get_extra_args(self):
        connection_options = Connection.vanilla_class.connection_options
        parameters = []
        for key in connection_options:
            task_var_name = 'ansible_%s' % key
            task_var = self.get_task_var(task_var_name)
            if task_var is not None:
                parameters += [connection_options[key], task_var]

        return parameters
