#!/usr/bin/python
# -*- coding: utf-8 -*-

# Copyright: (c) 2021, Manuel Widmer <mawidmer@cisco.com>
# Copyright: (c) 2021, Anvitha Jain (@anvitha-jain) <anvjain@cisco.com>
# GNU General Public License v3.0+ (see LICENSE 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 = r'''
---
module: aci_vmm_vswitch_policy
short_description: Manage vSwitch policy for VMware virtual domains profiles (vmm:DomP)
description:
- Manage vSwitch policy for VMware VMM domains on Cisco ACI fabrics.
options:
  port_channel_policy:
    description:
    - Name of the fabric access port-channel policy.
    type: str
  lldp_policy:
    description:
    - Name of the fabric access LLDP policy.
    type: str
  cdp_policy:
    description:
    - Name of the fabric access CDP policy.
    type: str
  mtu_policy:
    description:
    - VMWare only.
    - Name of the fabric access MTU policy.
    type: str
  domain:
    description:
    - Name of the virtual domain profile.
    type: str
    aliases: [ domain_name, domain_profile ]
  enhanced_lag:
    description:
    - List of enhanced LAG policies if vSwitch needs to be connected via VPC.
    type: list
    elements: dict
    suboptions:
      name:
        description:
        - Name of the enhanced Lag policy.
        type: str
        required: true
      lacp_mode:
        description:
        - LACP port channel mode.
        type: str
        choices: [ active, passive ]
      load_balancing_mode:
        description:
        - Load balancing mode of the port channel.
        - See also https://pubhub.devnetcloud.com/media/apic-mim-ref-421/docs/MO-lacpEnhancedLagPol.html.
        type: str
        choices:
          - dst-ip
          - dst-ip-l4port
          - dst-ip-vlan
          - dst-ip-l4port-vlan
          - dst-mac
          - dst-l4port
          - src-ip
          - src-ip-l4port
          - src-ip-vlan
          - src-ip-l4port-vlan
          - src-mac
          - src-l4port
          - src-dst-ip
          - src-dst-ip-l4port
          - src-dst-ip-vlan
          - src-dst-ip-l4port-vlan
          - src-dst-mac
          - src-dst-l4port
          - src-port-id
          - vlan
      number_uplinks:
        description:
        - Number of uplinks, must be between 2 and 8.
        type: int
  stp_policy:
    description:
    - SCVMM only.
    - Name of the STP policy.
    type: str
  netflow_exporter:
    description:
    - Parameters for the netflow exporter policy
    type: dict
    suboptions:
      name:
        description:
        - Name of the netflow exporter policy
        type: str
        required: true
      active_flow_timeout:
        description:
        - Specifies the delay in seconds that NetFlow waits after the active flow is initiated, after which NetFlow sends the collected data.
        - The range is from 60 to 3600. The default value is 60
        type: int
      idle_flow_timeout:
        description:
        - Specifies the delay in seconds that NetFlow waits after the idle flow is initiated, after which NetFlow sends the collected data.
        - The range is from 10 to 600. The default value is 15.
        type: int
      sampling_rate:
        description:
        - (VDS only) Specifies how many packets that NetFlow will drop after every collected packet.
          If you specify a value of 0, then NetFlow does not drop any packets.
        - The range is from 0 to 1000. The default value is 0.
        type: int
  state:
    description:
    - Use C(present) or C(absent) for adding or removing.
    - Use C(query) for listing an object or multiple objects.
    type: str
    choices: [ absent, present, query ]
    default: present
  vm_provider:
    description:
    - The VM platform for VMM Domains.
    - Support for Kubernetes was added in ACI v3.0.
    - Support for CloudFoundry, OpenShift and Red Hat was added in ACI v3.1.
    type: str
    choices: [ cloudfoundry, kubernetes, microsoft, openshift, openstack, redhat, vmware ]
extends_documentation_fragment:
- cisco.aci.aci

seealso:
- module: cisco.aci.aci_domain
- name: APIC Management Information Model reference
  description: More information about the internal APIC classes B(vmm:DomP)
  link: https://developer.cisco.com/docs/apic-mim-ref/
author:
- Manuel Widmer (@lumean)
- Anvitha Jain (@anvitha-jain)
'''

EXAMPLES = r'''
- name: Add a vSwitch policy with LLDP
  cisco.aci.aci_vmm_vswitch_policy:
    host: apic
    username: admin
    password: SomeSecretPassword
    lldp_policy: LLDP_ENABLED
    domain: vmware_dom
    vm_provider: vmware
    state: present

- name: Add a vSwitch policy with link aggregation
  cisco.aci.aci_vmm_vswitch_policy:
    host: apic
    username: admin
    password: SomeSecretPassword
    port_channel_policy: LACP_ACTIVE
    lldp_policy: LLDP_ENABLED
    domain: vmware_dom
    vm_provider: vmware
    enhanced_lag:
      - name: my_lacp_uplink
        lacp_mode: active
        load_balancing_mode: src-dst-ip
        number_uplinks: 2
    state: present

- name: Remove vSwitch Policy from VMware VMM domain
  cisco.aci.aci_vmm_vswitch_policy:
    host: apic
    username: admin
    password: SomeSecretPassword
    domain: vmware_dom
    vm_provider: vmware
    state: absent

- name: Query the vSwitch policy of the VMWare domain
  cisco.aci.aci_vmm_vswitch_policy:
    host: apic
    username: admin
    password: SomeSecretPassword
    domain: vmware_dom
    vm_provider: vmware
    state: query
  delegate_to: localhost
  register: query_result
'''

RETURN = r'''
current:
  description: The existing configuration from the APIC after the module has finished
  returned: success
  type: list
  sample:
    [
        {
            "fvTenant": {
                "attributes": {
                    "descr": "Production environment",
                    "dn": "uni/tn-production",
                    "name": "production",
                    "nameAlias": "",
                    "ownerKey": "",
                    "ownerTag": ""
                }
            }
        }
    ]
error:
  description: The error information as returned from the APIC
  returned: failure
  type: dict
  sample:
    {
        "code": "122",
        "text": "unknown managed object class foo"
    }
raw:
  description: The raw output returned by the APIC REST API (xml or json)
  returned: parse error
  type: str
  sample: '<?xml version="1.0" encoding="UTF-8"?><imdata totalCount="1"><error code="122" text="unknown managed object class foo"/></imdata>'
sent:
  description: The actual/minimal configuration pushed to the APIC
  returned: info
  type: list
  sample:
    {
        "fvTenant": {
            "attributes": {
                "descr": "Production environment"
            }
        }
    }
previous:
  description: The original configuration from the APIC before the module has started
  returned: info
  type: list
  sample:
    [
        {
            "fvTenant": {
                "attributes": {
                    "descr": "Production",
                    "dn": "uni/tn-production",
                    "name": "production",
                    "nameAlias": "",
                    "ownerKey": "",
                    "ownerTag": ""
                }
            }
        }
    ]
proposed:
  description: The assembled configuration from the user-provided parameters
  returned: info
  type: dict
  sample:
    {
        "fvTenant": {
            "attributes": {
                "descr": "Production environment",
                "name": "production"
            }
        }
    }
filter_string:
  description: The filter string used for the request
  returned: failure or debug
  type: str
  sample: ?rsp-prop-include=config-only
method:
  description: The HTTP method used for the request to the APIC
  returned: failure or debug
  type: str
  sample: POST
response:
  description: The HTTP response from the APIC
  returned: failure or debug
  type: str
  sample: OK (30 bytes)
status:
  description: The HTTP status from the APIC
  returned: failure or debug
  type: int
  sample: 200
url:
  description: The HTTP url used for the request to the APIC
  returned: failure or debug
  type: str
  sample: https://10.11.12.13/api/mo/uni/tn-production.json
'''

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.cisco.aci.plugins.module_utils.aci import ACIModule, aci_argument_spec, enhanced_lag_spec, netflow_spec

# via UI vSwitch Policy can only be added for VMware and Microsoft vmm domains
# behavior for other domains is currently untested.
VM_PROVIDER_MAPPING = dict(
    cloudfoundry='CloudFoundry',
    kubernetes='Kubernetes',
    microsoft='Microsoft',
    openshift='OpenShift',
    openstack='OpenStack',
    redhat='Redhat',
    vmware='VMware',
)

# enhanced_lag_spec = dict(
#     name=dict(type='str', required=True),
#     lacp_mode=dict(type='str', choices=['active', 'passive']),
#     load_balancing_mode=dict(
#         type='str',
#         choices=['dst-ip', 'dst-ip-l4port', 'dst-ip-vlan', 'dst-ip-l4port-vlan', 'dst-mac', 'dst-l4port',
#                  'src-ip', 'src-ip-l4port', 'src-ip-vlan', 'src-ip-l4port-vlan', 'src-mac', 'src-l4port',
#                  'src-dst-ip', 'src-dst-ip-l4port', 'src-dst-ip-vlan', 'src-dst-ip-l4port-vlan', 'src-dst-mac',
#                  'src-dst-l4port', 'src-port-id', 'vlan']),
#     number_uplinks=dict(type='int'),
# )

# netflow_spec = dict(
#     name=dict(type='str', required=True),
#     active_flow_timeout=dict(type='int'),
#     idle_flow_timeout=dict(type='int'),
#     sampling_rate=dict(type='int'),
# )


def main():
    argument_spec = aci_argument_spec()
    argument_spec.update(
        port_channel_policy=dict(type='str'),
        lldp_policy=dict(type='str'),
        cdp_policy=dict(type='str'),
        mtu_policy=dict(type='str'),
        stp_policy=dict(type='str'),
        enhanced_lag=dict(type='list', elements='dict', options=enhanced_lag_spec()),
        netflow_exporter=dict(type='dict', options=netflow_spec()),
        domain=dict(type='str', aliases=['domain_name', 'domain_profile']),
        state=dict(type='str', default='present', choices=['absent', 'present', 'query']),
        vm_provider=dict(type='str', choices=list(VM_PROVIDER_MAPPING.keys())),
    )

    module = AnsibleModule(
        argument_spec=argument_spec,
        supports_check_mode=True,
        required_if=[
            ['state', 'absent', ['domain', 'vm_provider']],
            ['state', 'present', ['domain', 'vm_provider']],
        ],
    )

    port_channel_policy = module.params.get('port_channel_policy')
    lldp_policy = module.params.get('lldp_policy')
    cdp_policy = module.params.get('cdp_policy')
    mtu_policy = module.params.get('mtu_policy')
    stp_policy = module.params.get('stp_policy')
    netflow_exporter = module.params.get('netflow_exporter')
    enhanced_lag = module.params.get('enhanced_lag')
    domain = module.params.get('domain')
    state = module.params.get('state')
    vm_provider = module.params.get('vm_provider')

    aci = ACIModule(module)
    vswitch_class = 'vmmVSwitchPolicyCont'

    child_classes = [
        'vmmRsVswitchOverrideLldpIfPol',
        'vmmRsVswitchOverrideLacpPol',
        'vmmRsVswitchOverrideCdpIfPol',
        'lacpEnhancedLagPol'
    ]
    if mtu_policy is not None:
        child_classes.append('vmmRsVswitchOverrideMtuPol')

    if stp_policy is not None:
        child_classes.append('vmmRsVswitchOverrideStpPol')

    if isinstance(netflow_exporter, dict):
        child_classes.append('vmmRsVswitchExporterPol')

    aci.construct_url(
        root_class=dict(
            aci_class='vmmProvP',
            aci_rn='vmmp-{0}'.format(VM_PROVIDER_MAPPING.get(vm_provider)),
            module_object=vm_provider,
            target_filter={'name': vm_provider},
        ),
        subclass_1=dict(
            aci_class='vmmDomP',
            aci_rn='dom-{0}'.format(domain),
            module_object=domain,
            target_filter={'name': domain},
        ),
        subclass_2=dict(
            aci_class='vmmVSwitchPolicyCont',
            aci_rn='vswitchpolcont',
            module_object='vswitchpolcont',
            target_filter={'name': 'vswitchpolcont'},
        ),
        child_classes=child_classes,
    )

    aci.get_existing()

    if state == 'present':
        children = list()

        if port_channel_policy is not None:
            children.append(dict(vmmRsVswitchOverrideLacpPol=dict(attributes=dict(
                tDn='uni/infra/lacplagp-{0}'.format(port_channel_policy)
            ))))

        if lldp_policy is not None:
            children.append(dict(vmmRsVswitchOverrideLldpIfPol=dict(attributes=dict(
                tDn='uni/infra/lldpIfP-{0}'.format(lldp_policy)
            ))))

        if cdp_policy is not None:
            children.append(dict(vmmRsVswitchOverrideCdpIfPol=dict(attributes=dict(
                tDn='uni/infra/cdpIfP-{0}'.format(cdp_policy)
            ))))

        if mtu_policy is not None:
            children.append(dict(vmmRsVswitchOverrideMtuPol=dict(attributes=dict(
                tDn='uni/fabric/l2pol-{0}'.format(mtu_policy)
            ))))

        if stp_policy is not None:
            children.append(dict(vmmRsVswitchOverrideStpPol=dict(attributes=dict(
                tDn='uni/infra/ifPol-{0}'.format(stp_policy)
            ))))

        if isinstance(netflow_exporter, dict):
            children.append(dict(vmmRsVswitchExporterPol=dict(attributes=dict(
                tDn='uni/infra/vmmexporterpol-{0}'.format(netflow_exporter['name']),
                activeFlowTimeOut=netflow_exporter['active_flow_timeout'],
                idleFlowTimeOut=netflow_exporter['idle_flow_timeout'],
                samplingRate=netflow_exporter['sampling_rate'],
            ))))

        if isinstance(enhanced_lag, list):
            for lag_dict in enhanced_lag:
                children.append(dict(lacpEnhancedLagPol=dict(attributes=dict(
                    name=lag_dict['name'],
                    mode=lag_dict['lacp_mode'],
                    lbmode=lag_dict['load_balancing_mode'],
                    numLinks=lag_dict['number_uplinks'],
                ))))

        aci.payload(
            aci_class=vswitch_class,
            class_config=dict(rn='vswitchpolcont'),
            child_configs=children
        )

        aci.get_diff(aci_class=vswitch_class)

        aci.post_config()

    elif state == 'absent':
        aci.delete_config()

    aci.exit_json()


if __name__ == "__main__":
    main()
