#!/usr/bin/python -tt
# 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/>.

DOCUMENTATION = '''
---
module: rax_identity
short_description: Load Rackspace Cloud Identity
description:
     - Verifies Rackspace Cloud credentials and returns identity information
version_added: "1.5"
options:
  api_key:
    description:
      - Rackspace API key (overrides C(credentials))
  credentials:
    description:
      - File to find the Rackspace credentials in (ignored if C(api_key) and
        C(username) are provided)
    default: null
    aliases: ['creds_file']
  region:
    description:
      - Region to authenticate against
    default: DFW
  state:
    description:
      - Indicate desired state of the resource
    choices: ['present', 'absent']
    default: present
  username:
    description:
      - Rackspace username (overrides C(credentials))
requirements: [ "pyrax" ]
author: Christopher H. Laco, Matt Martz
notes:
  - The following environment variables can be used, C(RAX_USERNAME),
    C(RAX_API_KEY), C(RAX_CREDS_FILE), C(RAX_CREDENTIALS), C(RAX_REGION).
  - C(RAX_CREDENTIALS) and C(RAX_CREDS_FILE) points to a credentials file
    appropriate for pyrax. See U(https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md#authenticating)
  - C(RAX_USERNAME) and C(RAX_API_KEY) obviate the use of a credentials file
  - C(RAX_REGION) defines a Rackspace Public Cloud region (DFW, ORD, LON, ...)
'''

EXAMPLES = '''
- name: Load Rackspace Cloud Identity
  gather_facts: False
  hosts: local
  connection: local
  tasks:
    - name: Load Identity
      local_action:
        module: rax_identity
        credentials: ~/.raxpub
        region: DFW
      register: rackspace_identity
'''

import sys

from types import NoneType

try:
    import pyrax
except ImportError:
    print("failed=True msg='pyrax required for this module'")
    sys.exit(1)


NON_CALLABLES = (basestring, bool, dict, int, list, NoneType)


def cloud_identity(module, state, identity):
    for arg in (state, identity):
        if not arg:
            module.fail_json(msg='%s is required for rax_identity' % arg)

    instance = dict(
        authenticated=identity.authenticated,
        credentials=identity._creds_file
    )
    changed = False

    for key, value in vars(identity).iteritems():
        if (isinstance(value, NON_CALLABLES) and
                not key.startswith('_')):
            instance[key] = value

    if state == 'present':
        if not identity.authenticated:
            module.fail_json(msg='Credentials could not be verified!')

    module.exit_json(changed=changed, identity=instance)


def main():
    argument_spec = rax_argument_spec()
    argument_spec.update(
        dict(
            state=dict(default='present', choices=['present', 'absent'])
        )
    )

    module = AnsibleModule(
        argument_spec=argument_spec,
        required_together=rax_required_together()
    )

    state = module.params.get('state')

    setup_rax_module(module, pyrax)

    cloud_identity(module, state, pyrax.identity)

# import module snippets
from ansible.module_utils.basic import *
from ansible.module_utils.rax import *

### invoke the module
main()