---
- name: Register registry cleanup
  # This must be done **before** docker is set up (see next task), to ensure that the
  # registry is removed **before** docker itself is removed. This is necessary as the
  # registry and its frontends run as docker containers.
  command: 'true'
  notify: Remove test registry

- name: Setup Docker
  # Please note that we do setup_docker here and not via meta/main.yml to avoid the problem that
  # our cleanup is called **after** setup_docker's cleanup has been called!
  include_role:
    name: setup_docker

- name: Create random name prefix and test registry name
  set_fact:
    docker_registry_container_name_registry: '{{ ''ansible-docker-test-registry-%0x'' % ((2**32) | random) }}'
    docker_registry_container_name_nginx: '{{ ''ansible-docker-test-registry-frontend-%0x'' % ((2**32) | random) }}'
    docker_registry_container_name_nginx2: '{{ ''ansible-docker-test-registry-frontend2-%0x'' % ((2**32) | random) }}'

- name: Create image and container list
  set_fact:
    docker_registry_setup_inames: []
    docker_registry_setup_cnames:
    - '{{ docker_registry_container_name_registry }}'
    - '{{ docker_registry_container_name_nginx }}'
    - '{{ docker_registry_container_name_nginx2 }}'
    docker_registry_setup_vnames:
    - '{{ docker_registry_container_name_nginx }}'
    - '{{ docker_registry_container_name_nginx2 }}'

- debug:
    msg: Using test registry name {{ docker_registry_container_name_registry }} and nginx frontend names {{ docker_registry_container_name_nginx }} and {{ docker_registry_container_name_nginx2 }}

- fail: msg="Too old docker / docker-py version to set up docker registry!"
  when: not(docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')) and (ansible_distribution != 'CentOS' or ansible_distribution_major_version|int > 6)

- when: docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')
  block:

  # Set up registry container
  - name: Start test registry
    docker_container:
      name: '{{ docker_registry_container_name_registry }}'
      image: "{{ docker_test_image_registry }}"
      ports: 5000
      network_mode: '{{ current_container_network_ip | default(omit, true) }}'
      # We need to define the alias `real-registry` here because the global `links`
      # option for the NGINX containers (see setup-frontend.yml) does not work when
      # using networks.
      networks: >-
        {{
          [dict([['name', current_container_network_ip], ['aliases', ['real-registry']]])]
          if current_container_network_ip not in ['', 'bridge'] else omit
        }}
    register: registry_container

  - name: Get registry URL
    set_fact:
      registry_address: localhost:{{ registry_container.container.NetworkSettings.Ports['5000/tcp'].0.HostPort }}

  # Set up first nginx frontend for registry
  - include_tasks: setup-frontend.yml
    vars:
      docker_registry_container_name_frontend: '{{ docker_registry_container_name_nginx }}'

  - set_fact:
      registry_frontend_address: '{{ docker_registry_frontend_address }}'

  # Set up second nginx frontend for registry
  - include_tasks: setup-frontend.yml
    vars:
      docker_registry_container_name_frontend: '{{ docker_registry_container_name_nginx2 }}'

  - set_fact:
      registry_frontend2_address: '{{ docker_registry_frontend_address }}'

  # Print addresses for registry and frontends
  - debug:
      msg: "Registry available under {{ registry_address }}, NGINX frontends available under {{ registry_frontend_address }} and {{ registry_frontend2_address }}"
