- name: Check for results.json
  stat:
    path: "{{ zuul.executor.work_root }}/results.json"
  register: result_json_stat
  delegate_to: localhost

# This can be removed if we add this functionality to Zuul directly
- name: Load information from zuul_return
  set_fact:
    buildset_registry: "{{ (lookup('file', zuul.executor.work_root + '/results.json') | from_json)['buildset_registry'] }}"
  when:
    - buildset_registry is not defined
    - result_json_stat.stat.exists
    - result_json_stat.stat.size > 0
    - "'buildset_registry' in (lookup('file', zuul.executor.work_root + '/results.json') | from_json)"

# Docker doesn't understand docker push [1234:5678::]:5000/image/path:tag
# so we set up /etc/hosts with a registry alias name to support ipv6 and 4.
- name: Configure /etc/hosts for buildset_registry to workaround docker not understanding ipv6 addresses
  become: yes
  lineinfile:
    path: /etc/hosts
    state: present
    regex: "^{{ buildset_registry.host }}\tzuul-jobs.buildset-registry$"
    line: "{{ buildset_registry.host }}\tzuul-jobs.buildset-registry"
    insertafter: EOF
  when: buildset_registry is defined and buildset_registry.host | ipaddr

- name: Set buildset_registry alias variable when using ip
  set_fact:
    buildset_registry_alias: zuul-jobs.buildset-registry
  when: buildset_registry is defined and buildset_registry.host | ipaddr

- name: Set buildset_registry alias variable when using name
  set_fact:
    buildset_registry_alias: "{{ buildset_registry.host }}"
  when: buildset_registry is defined and not ( buildset_registry.host | ipaddr )

- name: Determine if we need to use buildx or normal build
  set_fact:
    use_buildx: "{{ docker_images | selectattr('arch', 'defined') | list }}"

- name: Normal docker block
  when: not use_buildx
  block:

    - name: Build docker images
      include_tasks: build.yaml
      loop: "{{ docker_images }}"
      loop_control:
        loop_var: zj_image

    # Push each image.
    - name: Push image to buildset registry
      when: buildset_registry is defined
      include_tasks: push.yaml
      loop: "{{ docker_images }}"
      loop_control:
        loop_var: zj_image

- name: Buildx block
  when: use_buildx
  vars:
    temp_registry:
      host: "127.0.0.1"
      port: 5100
      username: zuul
      password: tempregistry
  block:
    - name: Set up a temporary registry for holding buildx-built images
      import_tasks: ../../../util-tasks/run-docker-registry.yaml
      vars:
        registry: "{{ temp_registry }}"
        container_command: docker

    - name: Log in to temporary registry
      command: "docker login -u {{ temp_registry.username }} -p {{ temp_registry.password }} {{ temp_registry.host }}:{{ temp_registry.port }}"

    - name: Set up buildx builders
      include_tasks: setup-buildx.yaml

    - name: Build and push each image using buildx.
      include_tasks: buildx.yaml
      loop: "{{ docker_images }}"
      loop_control:
        loop_var: zj_image

- name: Cleanup sibling source directory
  file:
    path: '{{ zuul_work_dir }}/.zuul-siblings'
    state: absent