#!/usr/bin/python
#
# Copyright 2016 Red Hat | Ansible
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function
__metaclass__ = type


ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ['preview'],
                    'supported_by': 'community'}


DOCUMENTATION = '''
---
module: docker_container_facts

short_description: Retrieves facts about docker container

description:
  - Retrieves facts about a docker container.
  - Essentially returns the output of C(docker inspect <name>), similar to what M(docker_container)
    returns for a non-absent container.

version_added: "2.8"

options:
  name:
    description:
      - The name of the container to inspect.
      - When identifying an existing container name may be a name or a long or short container ID.
    required: true
extends_documentation_fragment:
    - docker

author:
    - "Felix Fontein (@felixfontein)"

requirements:
    - "python >= 2.6"
    - "docker-py >= 1.8.0"
    - "Please note that the L(docker-py,https://pypi.org/project/docker-py/) Python
       module has been superseded by L(docker,https://pypi.org/project/docker/)
       (see L(here,https://github.com/docker/docker-py/issues/1310) for details).
       For Python 2.6, C(docker-py) must be used. Otherwise, it is recommended to
       install the C(docker) Python module. Note that both modules should I(not)
       be installed at the same time. Also note that when both modules are installed
       and one of them is uninstalled, the other might no longer function and a
       reinstall of it is required."
    - "Docker API >= 1.20"
'''

EXAMPLES = '''
- name: Get infos on container
  docker_container_facts:
    name: mydata
  register: result

- name: Does container exist?
  debug:
    msg: "The container {{ 'exists' if result.exists else 'does not exist' }}"

- name: Print information about container
  debug:
    var: result.docker_container
  when: result.exists
'''

RETURN = '''
exists:
    description:
      - Returns whether the container exists.
    type: bool
    returned: always
    sample: true
docker_container:
    description:
      - Facts representing the current state of the container. Matches the docker inspection output.
      - Will be C(None) if container does not exist.
    returned: always
    type: dict
    sample: '{
        "AppArmorProfile": "",
        "Args": [],
        "Config": {
            "AttachStderr": false,
            "AttachStdin": false,
            "AttachStdout": false,
            "Cmd": [
                "/usr/bin/supervisord"
            ],
            "Domainname": "",
            "Entrypoint": null,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "ExposedPorts": {
                "443/tcp": {},
                "80/tcp": {}
            },
            "Hostname": "8e47bf643eb9",
            "Image": "lnmp_nginx:v1",
            "Labels": {},
            "OnBuild": null,
            "OpenStdin": false,
            "StdinOnce": false,
            "Tty": false,
            "User": "",
            "Volumes": {
                "/tmp/lnmp/nginx-sites/logs/": {}
            },
            ...
    }'
'''

from ansible.module_utils.docker_common import AnsibleDockerClient


def main():
    argument_spec = dict(
        name=dict(type='str', required=True),
    )

    client = AnsibleDockerClient(
        argument_spec=argument_spec,
        supports_check_mode=True,
        min_docker_api_version='1.20',
    )

    container = client.get_container(client.module.params['name'])

    client.module.exit_json(
        changed=False,
        exists=(True if container else False),
        docker_container=container,
    )


if __name__ == '__main__':
    main()