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

# Copyright: (c) 2019, Nirav Katarmal (@nkatarmal-crest) <nirav.katarmal@crestdatasys.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: mso_schema_site_anp_epg_domain
short_description: Manage site-local EPG domains in schema template
description:
- Manage site-local EPG domains in schema template on Cisco ACI Multi-Site.
author:
- Nirav Katarmal (@nkatarmal-crest)
options:
  schema:
    description:
    - The name of the schema.
    type: str
    required: yes
  site:
    description:
    - The name of the site.
    type: str
    required: yes
  template:
    description:
    - The name of the template.
    type: str
    required: yes
  anp:
    description:
    - The name of the ANP.
    type: str
    required: yes
  epg:
    description:
    - The name of the EPG.
    type: str
    required: yes
  domain_association_type:
    description:
    - The type of domain to associate.
    type: str
    choices: [ vmmDomain, l3ExtDomain, l2ExtDomain, physicalDomain, fibreChannelDomain ]
  domain_profile:
    description:
    - The domain profile name.
    type: str
  deployment_immediacy:
    description:
    - The deployment immediacy of the domain.
    - C(immediate) means B(Deploy immediate).
    - C(lazy) means B(deploy on demand).
    type: str
    choices: [ immediate, lazy ]
  resolution_immediacy:
    description:
    - Determines when the policies should be resolved and available.
    - Defaults to C(lazy) when unset during creation.
    type: str
    choices: [ immediate, lazy, pre-provision ]
  micro_seg_vlan_type:
    description:
    - Virtual LAN type for microsegmentation. This attribute can only be used with vmmDomain domain association.
    - vlan is currently the only accepted value.
    type: str
  micro_seg_vlan:
    description:
    - Virtual LAN for microsegmentation. This attribute can only be used with vmmDomain domain association.
    type: int
  port_encap_vlan_type:
    description:
    - Virtual LAN type for port encap. This attribute can only be used with vmmDomain domain association.
    - vlan is currently the only accepted value.
    type: str
  port_encap_vlan:
    description:
    - Virtual LAN type for port encap. This attribute can only be used with vmmDomain domain association.
    type: int
  vlan_encap_mode:
    description:
    - Which VLAN enacap mode to use. This attribute can only be used with vmmDomain domain association.
    type: str
    choices: [ static, dynamic ]
  allow_micro_segmentation:
    description:
    - Specifies microsegmentation is enabled or not. This attribute can only be used with vmmDomain domain association.
    type: bool
  switch_type:
    description:
    - Which switch type to use with this domain association. This attribute can only be used with vmmDomain domain association.
    type: str
  switching_mode:
    description:
    - Which switching mode to use with this domain association. This attribute can only be used with vmmDomain domain association.
    type: str
  enhanced_lagpolicy_name:
    description:
    - EPG enhanced lagpolicy name. This attribute can only be used with vmmDomain domain association.
    type: str
  enhanced_lagpolicy_dn:
    description:
    - Distinguished name of EPG lagpolicy. This attribute can only be used with vmmDomain domain association.
    type: str
  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
notes:
- The ACI MultiSite PATCH API has a deficiency requiring some objects to be referenced by index.
  This can cause silent corruption on concurrent access when changing/removing on object as
  the wrong object may be referenced. This module is affected by this deficiency.
seealso:
- module: cisco.mso.mso_schema_site_anp_epg
- module: cisco.mso.mso_schema_template_anp_epg
extends_documentation_fragment: cisco.mso.modules
'''

EXAMPLES = r'''
- name: Add a new domain to a site EPG
  cisco.mso.mso_schema_site_anp_epg_domain:
    host: mso_host
    username: admin
    password: SomeSecretPassword
    schema: Schema1
    site: Site1
    template: Template1
    anp: ANP1
    epg: EPG1
    domain_association_type: vmmDomain
    domain_profile: 'VMware-VMM'
    deployment_immediacy: lazy
    resolution_immediacy: pre-provision
    state: present
  delegate_to: localhost

- name: Remove a domain from a site EPG
  cisco.mso.mso_schema_site_anp_epg_domain:
    host: mso_host
    username: admin
    password: SomeSecretPassword
    schema: Schema1
    site: Site1
    template: Template1
    anp: ANP1
    epg: EPG1
    domain_association_type: vmmDomain
    domain_profile: 'VMware-VMM'
    deployment_immediacy: lazy
    resolution_immediacy: pre-provision
    state: absent
  delegate_to: localhost

- name: Query a domain associated with a specific site EPG
  cisco.mso.mso_schema_site_anp_epg_domain:
    host: mso_host
    username: admin
    password: SomeSecretPassword
    schema: Schema1
    site: Site1
    template: Template1
    anp: ANP1
    epg: EPG1
    domain_association_type: vmmDomain
    domain_profile: 'VMware-VMM'
    state: query
  delegate_to: localhost
  register: query_result

- name: Query all domains associated with a site EPG
  cisco.mso.mso_schema_site_anp_epg_domain:
    host: mso_host
    username: admin
    password: SomeSecretPassword
    schema: Schema1
    site: Site1
    template: Template1
    anp: ANP1
    epg: EPG1
    state: query
  delegate_to: localhost
  register: query_result
'''

RETURN = r'''
'''

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.cisco.mso.plugins.module_utils.mso import MSOModule, mso_argument_spec


def main():
    argument_spec = mso_argument_spec()
    argument_spec.update(
        schema=dict(type='str', required=True),
        site=dict(type='str', required=True),
        template=dict(type='str', required=True),
        anp=dict(type='str', required=True),
        epg=dict(type='str', required=True),
        domain_association_type=dict(type='str', choices=['vmmDomain', 'l3ExtDomain', 'l2ExtDomain', 'physicalDomain', 'fibreChannelDomain']),
        domain_profile=dict(type='str'),
        deployment_immediacy=dict(type='str', choices=['immediate', 'lazy']),
        resolution_immediacy=dict(type='str', choices=['immediate', 'lazy', 'pre-provision']),
        state=dict(type='str', default='present', choices=['absent', 'present', 'query']),
        micro_seg_vlan_type=dict(type='str'),
        micro_seg_vlan=dict(type='int'),
        port_encap_vlan_type=dict(type='str'),
        port_encap_vlan=dict(type='int'),
        vlan_encap_mode=dict(type='str', choices=['static', 'dynamic']),
        allow_micro_segmentation=dict(type='bool'),
        switch_type=dict(type='str'),
        switching_mode=dict(type='str'),
        enhanced_lagpolicy_name=dict(type='str'),
        enhanced_lagpolicy_dn=dict(type='str'),

    )

    module = AnsibleModule(
        argument_spec=argument_spec,
        supports_check_mode=True,
        required_if=[
            ['state', 'absent', ['domain_association_type', 'domain_profile', 'deployment_immediacy', 'resolution_immediacy']],
            ['state', 'present', ['domain_association_type', 'domain_profile', 'deployment_immediacy', 'resolution_immediacy']],
        ],
    )

    schema = module.params.get('schema')
    site = module.params.get('site')
    template = module.params.get('template').replace(' ', '')
    anp = module.params.get('anp')
    epg = module.params.get('epg')
    domain_association_type = module.params.get('domain_association_type')
    domain_profile = module.params.get('domain_profile')
    deployment_immediacy = module.params.get('deployment_immediacy')
    resolution_immediacy = module.params.get('resolution_immediacy')
    state = module.params.get('state')
    micro_seg_vlan_type = module.params.get('micro_seg_vlan_type')
    micro_seg_vlan = module.params.get('micro_seg_vlan')
    port_encap_vlan_type = module.params.get('port_encap_vlan_type')
    port_encap_vlan = module.params.get('port_encap_vlan')
    vlan_encap_mode = module.params.get('vlan_encap_mode')
    allow_micro_segmentation = module.params.get('allow_micro_segmentation')
    switch_type = module.params.get('switch_type')
    switching_mode = module.params.get('switching_mode')
    enhanced_lagpolicy_name = module.params.get('enhanced_lagpolicy_name')
    enhanced_lagpolicy_dn = module.params.get('enhanced_lagpolicy_dn')

    mso = MSOModule(module)

    # Get schema_id
    schema_obj = mso.get_obj('schemas', displayName=schema)
    if not schema_obj:
        mso.fail_json(msg="Provided schema '{0}' does not exist".format(schema))
    schema_path = 'schemas/{id}'.format(**schema_obj)
    schema_id = schema_obj.get('id')

    # Get template
    templates = [t.get('name') for t in schema_obj.get('templates')]
    if template not in templates:
        mso.fail_json(msg="Provided template '{0}' does not exist. Existing templates: {1}".format(template, ', '.join(templates)))
    template_idx = templates.index(template)

    # Get site
    site_id = mso.lookup_site(site)

    # Get site_idx
    if 'sites' not in schema_obj:
        mso.fail_json(msg="No site associated with template '{0}'. Associate the site with the template using mso_schema_site.".format(template))
    sites = [(s.get('siteId'), s.get('templateName')) for s in schema_obj.get('sites')]
    sites_list = [s.get('siteId') + '/' + s.get('templateName') for s in schema_obj.get('sites')]
    if (site_id, template) not in sites:
        mso.fail_json(msg="Provided site/siteId/template '{0}/{1}/{2}' does not exist. "
                          "Existing siteIds/templates: {3}".format(site, site_id, template, ', '.join(sites_list)))

    # Schema-access uses indexes
    site_idx = sites.index((site_id, template))
    # Path-based access uses site_id-template
    site_template = '{0}-{1}'.format(site_id, template)

    payload = dict()
    ops = []
    op_path = ''

    # Get ANP
    anp_ref = mso.anp_ref(schema_id=schema_id, template=template, anp=anp)
    anps = [a.get('anpRef') for a in schema_obj['sites'][site_idx]['anps']]
    anps_in_temp = [a.get('name') for a in schema_obj['templates'][template_idx]['anps']]
    if anp not in anps_in_temp:
        mso.fail_json(msg="Provided anp '{0}' does not exist. Existing anps: {1}".format(anp, ', '.join(anps)))
    else:
        # Update anp index at template level
        template_anp_idx = anps_in_temp.index(anp)

    # If anp not at site level but exists at template level
    if anp_ref not in anps:
        op_path = '/sites/{0}/anps/-'.format(site_template)
        payload.update(
            anpRef=dict(
                schemaId=schema_id,
                templateName=template,
                anpName=anp,
            ),
        )

    else:
        # Update anp index at site level
        anp_idx = anps.index(anp_ref)

    # Get EPG
    epg_ref = mso.epg_ref(schema_id=schema_id, template=template, anp=anp, epg=epg)

    # If anp exists at site level
    if 'anpRef' not in payload:
        epgs = [e.get('epgRef') for e in schema_obj['sites'][site_idx]['anps'][anp_idx]['epgs']]

    # If anp already at site level AND if epg not at site level (or) anp not at site level?
    if ('anpRef' not in payload and epg_ref not in epgs) or 'anpRef' in payload:
        epgs_in_temp = [e.get('name') for e in schema_obj['templates'][template_idx]['anps'][template_anp_idx]['epgs']]

        # If EPG not at template level - Fail
        if epg not in epgs_in_temp:
            mso.fail_json(msg="Provided EPG '{0}' does not exist. Existing EPGs: {1} epgref {2}".format(epg, ', '.join(epgs_in_temp), epg_ref))

        # EPG at template level but not at site level. Create payload at site level for EPG
        else:

            new_epg = dict(
                epgRef=dict(
                    schemaId=schema_id,
                    templateName=template,
                    anpName=anp,
                    epgName=epg,
                )
            )

            # If anp not in payload then, anp already exists at site level. New payload will only have new EPG payload
            if 'anpRef' not in payload:
                op_path = '/sites/{0}/anps/{1}/epgs/-'.format(site_template, anp)
                payload = new_epg
            else:
                # If anp in payload, anp exists at site level. Update payload with EPG payload
                payload['epgs'] = [new_epg]

    # Update index of EPG at site level
    else:
        epg_idx = epgs.index(epg_ref)

    if domain_association_type == 'vmmDomain':
        domain_dn = 'uni/vmmp-VMware/dom-{0}'.format(domain_profile)
    elif domain_association_type == 'l3ExtDomain':
        domain_dn = 'uni/l3dom-{0}'.format(domain_profile)
    elif domain_association_type == 'l2ExtDomain':
        domain_dn = 'uni/l2dom-{0}'.format(domain_profile)
    elif domain_association_type == 'physicalDomain':
        domain_dn = 'uni/phys-{0}'.format(domain_profile)
    elif domain_association_type == 'fibreChannelDomain':
        domain_dn = 'uni/fc-{0}'.format(domain_profile)
    else:
        domain_dn = ''

    # Get Domains
    # If anp at site level and epg is at site level
    if 'anpRef' not in payload and 'epgRef' not in payload:
        domains = [dom.get('dn') for dom in schema_obj['sites'][site_idx]['anps'][anp_idx]['epgs'][epg_idx]['domainAssociations']]
        if domain_dn in domains:
            domain_idx = domains.index(domain_dn)
            domain_path = '/sites/{0}/anps/{1}/epgs/{2}/domainAssociations/{3}'.format(site_template, anp, epg, domain_idx)
            mso.existing = schema_obj['sites'][site_idx]['anps'][anp_idx]['epgs'][epg_idx]['domainAssociations'][domain_idx]

    if state == 'query':
        if domain_association_type is None or domain_profile is None:
            mso.existing = schema_obj.get('sites')[site_idx]['anps'][anp_idx]['epgs'][epg_idx]['domainAssociations']
        elif not mso.existing:
            mso.fail_json(msg="Domain association '{domain_association_type}/{domain_profile}' not found".format(
                          domain_association_type=domain_association_type,
                          domain_profile=domain_profile))
        mso.exit_json()

    domains_path = '/sites/{0}/anps/{1}/epgs/{2}/domainAssociations'.format(site_template, anp, epg)
    ops = []
    new_domain = dict(
        dn=domain_dn,
        domainType=domain_association_type,
        deploymentImmediacy=deployment_immediacy,
        resolutionImmediacy=resolution_immediacy,
    )

    if domain_association_type == 'vmmDomain':
        vmmDomainProperties = {}
        if micro_seg_vlan_type and micro_seg_vlan:
            microSegVlan = dict(vlanType=micro_seg_vlan_type, vlan=micro_seg_vlan)
            vmmDomainProperties['microSegVlan'] = microSegVlan
        elif not micro_seg_vlan_type and micro_seg_vlan:
            mso.fail_json(msg="micro_seg_vlan_type is required when micro_seg_vlan is provided.")
        elif micro_seg_vlan_type and not micro_seg_vlan:
            mso.fail_json(msg="micro_seg_vlan is required when micro_seg_vlan_type is provided.")

        if port_encap_vlan_type and port_encap_vlan:
            portEncapVlan = dict(vlanType=port_encap_vlan_type, vlan=port_encap_vlan)
            vmmDomainProperties['portEncapVlan'] = portEncapVlan
        elif not port_encap_vlan_type and port_encap_vlan:
            mso.fail_json(msg="port_encap_vlan_type is required when port_encap_vlan is provided.")
        elif port_encap_vlan_type and not port_encap_vlan:
            mso.fail_json(msg="port_encap_vlan is required when port_encap_vlan_type is provided.")

        if vlan_encap_mode:
            vmmDomainProperties['vlanEncapMode'] = vlan_encap_mode

        if allow_micro_segmentation:
            vmmDomainProperties['allowMicroSegmentation'] = allow_micro_segmentation
        if switch_type:
            vmmDomainProperties['switchType'] = switch_type
        if switching_mode:
            vmmDomainProperties['switchingMode'] = switching_mode

        if enhanced_lagpolicy_name and enhanced_lagpolicy_dn:
            enhancedLagPol = dict(name=enhanced_lagpolicy_name, dn=enhanced_lagpolicy_dn)
            epgLagPol = dict(enhancedLagPol=enhancedLagPol)
            vmmDomainProperties['epgLagPol'] = epgLagPol
        elif not enhanced_lagpolicy_name and enhanced_lagpolicy_dn:
            mso.fail_json(msg="enhanced_lagpolicy_name is required when enhanced_lagpolicy_dn is provided.")
        elif enhanced_lagpolicy_name and not enhanced_lagpolicy_dn:
            mso.fail_json(msg="enhanced_lagpolicy_dn is required when enhanced_lagpolicy_name is provided.")

        if vmmDomainProperties:
            new_domain['vmmDomainProperties'] = vmmDomainProperties

    # If payload is empty, anp and EPG already exist at site level
    if not payload:
        op_path = domains_path + '/-'
        payload = new_domain

    # If payload exists
    else:
        # If anp already exists at site level...(AND payload != epg as well?)
        if 'anpRef' not in payload:
            payload['domainAssociations'] = [new_domain]
        else:
            payload['epgs'][0]['domainAssociations'] = [new_domain]

    mso.previous = mso.existing
    if state == 'absent':
        if mso.existing:
            mso.sent = mso.existing = {}
            ops.append(dict(op='remove', path=domain_path))
    elif state == 'present':
        mso.sanitize(payload, collate=True)

        if mso.existing:
            ops.append(dict(op='replace', path=domain_path, value=mso.sent))
        else:
            ops.append(dict(op='add', path=op_path, value=mso.sent))

        mso.existing = new_domain

    if not module.check_mode:
        mso.request(schema_path, method='PATCH', data=ops)

    mso.exit_json()


if __name__ == "__main__":
    main()
