#!/usr/bin/python
# (c) 2015, Kevin Carter <kevin.carter@rackspace.com>
#
# Copyright 2015, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import json

# import module snippets
from ansible.module_utils.basic import AnsibleModule


DOCUMENTATION = """
---
module: keystone_sp
version_added: "1.9.2"
short_description:
   - Creates a fact for keystone_federated_identities and keystone_protocols
description:
   - Sets facts called `keystone_federated_identities` and
     `keystone_federated_protocols`, which are lists of hashes built from
     keystone_sp using the information in the `federated_identities` and
     `protocols` keys.
options:
    sp_data:
      description:
        - Hash to build the service provider lists from
          required: true
author: Kevin Carter
"""

EXAMPLES = """
# Set the keystone_federated_identities and keystone_federated_protocols facts
- keystone_sp:
    sp_data: "{{ keystone_sp }}"
  when: keystone_sp is defined
"""

# Keystone service provider data structure example.
"""
keystone_sp:
  trusted_idp_list:
    - name: "keystone-idp"
      federated_identities:
        - domain: Default
          project: fedproject
          group: fedgroup
          role: _member_
      protocols:
        - name: saml2
          mapping:
            ...
    - name: 'testshib-idp'
      federated_identities:
        - domain: Default
          project: fedproject2
          group: fedgroup2
          role: _member_
      protocols:
        - name: saml2
          mapping:
            ...
"""


class KeystoneSp(object):
    def __init__(self, module):
        """Generate an integer from a name."""
        self.module = module
        self.identities_return_list = list()
        self.protocols_return_list = list()
        self.sp_data = self.module.params['sp_data']
        if isinstance(self.sp_data, str):
            self.sp_data = json.loads(self.sp_data)

    def populate_sp_data(self):
        trusted_idp_list = self.sp_data['trusted_idp_list']
        for trusted_idp in trusted_idp_list:
            federated_identities = trusted_idp.get('federated_identities')
            if federated_identities:
                self.identities_return_list.extend(federated_identities)
            protocols = trusted_idp.get('protocols')
            if protocols:
                for protocol in protocols:
                    self.protocols_return_list.append(
                        {'idp': trusted_idp, 'protocol': protocol})


def main():
    module = AnsibleModule(
        argument_spec=dict(
            sp_data=dict(
                required=True
            )
        ),
        supports_check_mode=False
    )
    try:
        ksp = KeystoneSp(module=module)
        ksp.populate_sp_data()
        module.exit_json(
            changed=True,
            ansible_facts={
                'keystone_federated_identities': ksp.identities_return_list,
                'keystone_federated_protocols': ksp.protocols_return_list}
        )
    except Exception as exp:
        module.fail_json(msg='Failed Process: "%s"' % exp)


if __name__ == '__main__':
    main()