---
- module_defaults:
    group/aws:
      aws_access_key: "{{ aws_access_key }}"
      aws_secret_key: "{{ aws_secret_key }}"
      security_token: "{{ security_token | default(omit) }}"
      region: "{{ aws_region }}"
  block:

    - name: list available AZs
      aws_az_info:
      register: region_azs

    - name: pick an AZ for testing
      set_fact:
        subnet_az: "{{ region_azs.availability_zones[0].zone_name }}"

    # ============================================================
    - name: create a VPC
      ec2_vpc_net:
        name: "{{ resource_prefix }}-vpc"
        state: present
        cidr_block: "10.232.232.128/26"
        ipv6_cidr: True
        tags:
          Name: "{{ resource_prefix }}-vpc"
          Description: "Created by ansible-test"
      register: vpc_result

    - set_fact:
        vpc_ipv6_cidr: "{{ vpc_result.vpc.ipv6_cidr_block_association_set[0].ipv6_cidr_block }}"

    # ============================================================
    - name: create subnet (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
      check_mode: true
      register: vpc_subnet_create

    - name: assert creation would happen
      assert:
        that:
          - vpc_subnet_create is changed

    - name: create subnet (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
      register: vpc_subnet_create

    - name: assert creation happened (expected changed=true)
      assert:
        that:
           - 'vpc_subnet_create'
           - 'vpc_subnet_create.subnet.id.startswith("subnet-")'
           - '"Name" in vpc_subnet_create.subnet.tags and vpc_subnet_create.subnet.tags["Name"] == ec2_vpc_subnet_name'
           - '"Description" in vpc_subnet_create.subnet.tags and vpc_subnet_create.subnet.tags["Description"] == ec2_vpc_subnet_description'
    # ============================================================
    - name: recreate subnet (expected changed=false) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
      check_mode: true
      register: vpc_subnet_recreate

    - name: assert recreation changed nothing (expected changed=false)
      assert:
        that:
           - vpc_subnet_recreate is not changed

    - name: recreate subnet (expected changed=false)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
      register: vpc_subnet_recreate

    - name: assert recreation changed nothing (expected changed=false)
      assert:
        that:
           - vpc_subnet_recreate is not changed
           - 'vpc_subnet_recreate.subnet == vpc_subnet_create.subnet'

    # ============================================================
    - name: update subnet so instances launched in it are assigned an IP (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
        map_public: true
      check_mode: true
      register: vpc_subnet_modify

    - name: assert subnet changed
      assert:
        that:
          - vpc_subnet_modify is changed

    - name: update subnet so instances launched in it are assigned an IP
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
        map_public: true
      register: vpc_subnet_modify

    - name: assert subnet changed
      assert:
        that:
          - vpc_subnet_modify is changed
          - vpc_subnet_modify.subnet.map_public_ip_on_launch

    # ============================================================
    - name: add invalid ipv6 block to subnet (expected failed)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: 2001:db8::/64
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
      register: vpc_subnet_ipv6_failed
      ignore_errors: yes

    - name: assert failure happened (expected failed)
      assert:
        that:
           - vpc_subnet_ipv6_failed is failed
           - "'Couldn\\'t associate ipv6 cidr' in vpc_subnet_ipv6_failed.msg"

    # ============================================================
    - name: add a tag (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
          AnotherTag: SomeValue
        state: present
      check_mode: true
      register: vpc_subnet_add_a_tag

    - name: assert tag addition happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_add_a_tag is changed

    - name: add a tag (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
          AnotherTag: SomeValue
        state: present
      register: vpc_subnet_add_a_tag

    - name: assert tag addition happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_add_a_tag is changed
           - '"Name" in vpc_subnet_add_a_tag.subnet.tags and vpc_subnet_add_a_tag.subnet.tags["Name"] == ec2_vpc_subnet_name'
           - '"Description" in vpc_subnet_add_a_tag.subnet.tags and vpc_subnet_add_a_tag.subnet.tags["Description"] == ec2_vpc_subnet_description'
           - '"AnotherTag" in vpc_subnet_add_a_tag.subnet.tags and vpc_subnet_add_a_tag.subnet.tags["AnotherTag"] == "SomeValue"'

    # ============================================================
    - name: remove tags with default purge_tags=true (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          AnotherTag: SomeValue
        state: present
      check_mode: true
      register: vpc_subnet_remove_tags

    - name: assert tag removal happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_remove_tags is changed

    - name: remove tags with default purge_tags=true (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          AnotherTag: SomeValue
        state: present
      register: vpc_subnet_remove_tags

    - name: assert tag removal happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_remove_tags is changed
           - '"Name" not in vpc_subnet_remove_tags.subnet.tags'
           - '"Description" not in vpc_subnet_remove_tags.subnet.tags'
           - '"AnotherTag" in vpc_subnet_remove_tags.subnet.tags and vpc_subnet_remove_tags.subnet.tags["AnotherTag"] == "SomeValue"'

    # ============================================================
    - name: change tags with purge_tags=false (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
        purge_tags: false
      check_mode: true
      register: vpc_subnet_change_tags

    - name: assert tag addition happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_change_tags is changed

    - name: change tags with purge_tags=false (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        az: "{{ subnet_az }}"
        vpc_id: "{{ vpc_result.vpc.id }}"
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
        state: present
        purge_tags: false
      register: vpc_subnet_change_tags

    - name: assert tag addition happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_change_tags is changed
           - '"Name" in vpc_subnet_change_tags.subnet.tags and vpc_subnet_change_tags.subnet.tags["Name"] == ec2_vpc_subnet_name'
           - '"Description" in vpc_subnet_change_tags.subnet.tags and vpc_subnet_change_tags.subnet.tags["Description"] == ec2_vpc_subnet_description'
           - '"AnotherTag" in vpc_subnet_change_tags.subnet.tags and vpc_subnet_change_tags.subnet.tags["AnotherTag"] == "SomeValue"'

    # ============================================================
    - name: test state=absent (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      check_mode: true
      register: result

    - name: assert state=absent (expected changed=true)
      assert:
        that:
           - result is changed

    - name: test state=absent (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      register: result

    - name: assert state=absent (expected changed=true)
      assert:
        that:
           - result is changed

    # ============================================================
    - name: test state=absent (expected changed=false) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      check_mode: true
      register: result

    - name: assert state=absent (expected changed=false)
      assert:
        that:
           - result is not changed

    - name: test state=absent (expected changed=false)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      register: result

    - name: assert state=absent (expected changed=false)
      assert:
        that:
           - result is not changed

    # ============================================================
    - name: create subnet without AZ (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
      check_mode: true
      register: subnet_without_az

    - name: check that subnet without AZ works fine
      assert:
        that:
           - subnet_without_az is changed

    - name: create subnet without AZ
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
      register: subnet_without_az

    - name: check that subnet without AZ works fine
      assert:
        that:
           - subnet_without_az is changed

    # ============================================================
    - name: remove subnet without AZ (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      check_mode: true
      register: result

    - name: assert state=absent (expected changed=true)
      assert:
        that:
           - result is changed

    - name: remove subnet without AZ
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent
      register: result

    - name: assert state=absent (expected changed=true)
      assert:
        that:
           - result is changed


    # ============================================================
    - name: create subnet with IPv6 (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: true
        state: present
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
      check_mode: true
      register: vpc_subnet_ipv6_create

    - name: assert creation with IPv6 happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_ipv6_create is changed

    - name: create subnet with IPv6 (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: true
        state: present
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
      register: vpc_subnet_ipv6_create

    - name: assert creation with IPv6 happened (expected changed=true)
      assert:
        that:
           - vpc_subnet_ipv6_create is changed
           - 'vpc_subnet_ipv6_create.subnet.id.startswith("subnet-")'
           - "vpc_subnet_ipv6_create.subnet.ipv6_cidr_block == '{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}'"
           - '"Name" in vpc_subnet_ipv6_create.subnet.tags and vpc_subnet_ipv6_create.subnet.tags["Name"] == ec2_vpc_subnet_name'
           - '"Description" in vpc_subnet_ipv6_create.subnet.tags and vpc_subnet_ipv6_create.subnet.tags["Description"] == ec2_vpc_subnet_description'
           - 'vpc_subnet_ipv6_create.subnet.assign_ipv6_address_on_creation'

    # ============================================================
    - name: recreate subnet (expected changed=false) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: true
        state: present
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
      check_mode: true
      register: vpc_subnet_ipv6_recreate

    - name: assert recreation changed nothing (expected changed=false)
      assert:
        that:
           - vpc_subnet_ipv6_recreate is not changed

    - name: recreate subnet (expected changed=false)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: true
        state: present
        tags:
          Name: '{{ec2_vpc_subnet_name}}'
          Description: '{{ec2_vpc_subnet_description}}'
      register: vpc_subnet_ipv6_recreate

    - name: assert recreation changed nothing (expected changed=false)
      assert:
        that:
           - vpc_subnet_ipv6_recreate is not changed
           - 'vpc_subnet_ipv6_recreate.subnet == vpc_subnet_ipv6_create.subnet'

    # ============================================================
    - name: change subnet ipv6 attribute (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: false
        state: present
        purge_tags: false
      check_mode: true
      register: vpc_change_attribute

    - name: assert assign_instances_ipv6 attribute changed (expected changed=true)
      assert:
        that:
           - vpc_change_attribute is changed

    - name: change subnet ipv6 attribute (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        assign_instances_ipv6: false
        state: present
        purge_tags: false
      register: vpc_change_attribute

    - name: assert assign_instances_ipv6 attribute changed (expected changed=true)
      assert:
        that:
           - vpc_change_attribute is changed
           - 'not vpc_change_attribute.subnet.assign_ipv6_address_on_creation'

    # ============================================================
    - name: add second subnet with duplicate ipv6 cidr (expected failure)
      ec2_vpc_subnet:
        cidr: "10.232.232.144/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        ipv6_cidr: "{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}"
        state: present
        purge_tags: false
      register: vpc_add_duplicate_ipv6
      ignore_errors: true

    - name: assert graceful failure (expected failed)
      assert:
        that:
           - vpc_add_duplicate_ipv6 is failed
           - "'The IPv6 CIDR \\'{{ vpc_ipv6_cidr | regex_replace('::/56', '::/64') }}\\' conflicts with another subnet' in vpc_add_duplicate_ipv6.msg"

    # ============================================================
    - name: remove subnet ipv6 cidr (expected changed=true) (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
      check_mode: true
      register: vpc_remove_ipv6_cidr

    - name: assert subnet ipv6 cidr removed (expected changed=true)
      assert:
        that:
           - vpc_remove_ipv6_cidr is changed

    - name: remove subnet ipv6 cidr (expected changed=true)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
      register: vpc_remove_ipv6_cidr

    - name: assert subnet ipv6 cidr removed (expected changed=true)
      assert:
        that:
           - vpc_remove_ipv6_cidr is changed
           - "vpc_remove_ipv6_cidr.subnet.ipv6_cidr_block == ''"
           - 'not vpc_remove_ipv6_cidr.subnet.assign_ipv6_address_on_creation'

    # ============================================================
    - name: test adding a tag that looks like a boolean to the subnet (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
        tags:
          looks_like_boolean: true
      check_mode: true
      register: vpc_subnet_info

    - name: assert a tag was added
      assert:
        that:
          - vpc_subnet_info is changed

    - name: test adding a tag that looks like a boolean to the subnet
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
        tags:
          looks_like_boolean: true
      register: vpc_subnet_info

    - name: assert a tag was added
      assert:
        that:
          - vpc_subnet_info is changed
          - 'vpc_subnet_info.subnet.tags.looks_like_boolean == "True"'

    # ============================================================
    - name: test idempotence adding a tag that looks like a boolean (CHECK MODE)
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
        tags:
          looks_like_boolean: true
      check_mode: true
      register: vpc_subnet_info

    - name: assert tags haven't changed
      assert:
        that:
          - vpc_subnet_info is not changed

    - name: test idempotence adding a tag that looks like a boolean
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: present
        purge_tags: false
        tags:
          looks_like_boolean: true
      register: vpc_subnet_info

    - name: assert tags haven't changed
      assert:
        that:
          - vpc_subnet_info is not changed

  always:

    ################################################
    # TEARDOWN STARTS HERE
    ################################################

    - name: tidy up subnet
      ec2_vpc_subnet:
        cidr: "10.232.232.128/28"
        vpc_id: "{{ vpc_result.vpc.id }}"
        state: absent

    - name: tidy up VPC
      ec2_vpc_net:
        name: "{{ resource_prefix }}-vpc"
        state: absent
        cidr_block: "10.232.232.128/26"