#!/usr/bin/python
# Copyright (c) 2017 Ansible Project
# 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: aws_waf_info
short_description: Retrieve information for WAF ACLs, Rule , Conditions and Filters.
description:
  - Retrieve information for WAF ACLs, Rule , Conditions and Filters.
  - This module was called C(aws_waf_facts) before Ansible 2.9. The usage did not change.
version_added: "2.4"
requirements: [ boto3 ]
options:
  name:
    description:
      - The name of a Web Application Firewall.
    type: str
  waf_regional:
    description: Whether to use the waf-regional module.
    default: false
    required: no
    type: bool
    version_added: "2.9"

author:
  - Mike Mochan (@mmochan)
  - Will Thames (@willthames)
extends_documentation_fragment:
    - aws
    - ec2
'''

EXAMPLES = '''
- name: obtain all WAF information
  aws_waf_info:

- name: obtain all information for a single WAF
  aws_waf_info:
    name: test_waf

- name: obtain all information for a single WAF Regional
  aws_waf_info:
    name: test_waf
    waf_regional: true
'''

RETURN = '''
wafs:
  description: The WAFs that match the passed arguments.
  returned: success
  type: complex
  contains:
    name:
      description: A friendly name or description of the WebACL.
      returned: always
      type: str
      sample: test_waf
    default_action:
      description: The action to perform if none of the Rules contained in the WebACL match.
      returned: always
      type: int
      sample: BLOCK
    metric_name:
      description: A friendly name or description for the metrics for this WebACL.
      returned: always
      type: str
      sample: test_waf_metric
    rules:
      description: An array that contains the action for each Rule in a WebACL , the priority of the Rule.
      returned: always
      type: complex
      contains:
        action:
          description: The action to perform if the Rule matches.
          returned: always
          type: str
          sample: BLOCK
        metric_name:
          description: A friendly name or description for the metrics for this Rule.
          returned: always
          type: str
          sample: ipblockrule
        name:
          description: A friendly name or description of the Rule.
          returned: always
          type: str
          sample: ip_block_rule
        predicates:
          description: The Predicates list contains a Predicate for each
            ByteMatchSet, IPSet, SizeConstraintSet, SqlInjectionMatchSet or XssMatchSet
            object in a Rule.
          returned: always
          type: list
          sample:
            [
              {
                "byte_match_set_id": "47b822b5-abcd-1234-faaf-1234567890",
                "byte_match_tuples": [
                  {
                    "field_to_match": {
                      "type": "QUERY_STRING"
                    },
                    "positional_constraint": "STARTS_WITH",
                    "target_string": "bobbins",
                    "text_transformation": "NONE"
                  }
                ],
                "name": "bobbins",
                "negated": false,
                "type": "ByteMatch"
              }
            ]
'''

from ansible.module_utils.aws.core import AnsibleAWSModule
from ansible.module_utils.aws.waf import list_web_acls, get_web_acl


def main():
    argument_spec = dict(
        name=dict(required=False),
        waf_regional=dict(type='bool', default=False)
    )
    module = AnsibleAWSModule(argument_spec=argument_spec, supports_check_mode=True)
    if module._name == 'aws_waf_facts':
        module.deprecate("The 'aws_waf_facts' module has been renamed to 'aws_waf_info'", version='2.13')

    resource = 'waf' if not module.params['waf_regional'] else 'waf-regional'
    client = module.client(resource)
    web_acls = list_web_acls(client, module)
    name = module.params['name']
    if name:
        web_acls = [web_acl for web_acl in web_acls if
                    web_acl['Name'] == name]
        if not web_acls:
            module.fail_json(msg="WAF named %s not found" % name)
    module.exit_json(wafs=[get_web_acl(client, module, web_acl['WebACLId'])
                           for web_acl in web_acls])


if __name__ == '__main__':
    main()
