---
- block:
  - name: Make sure we're not already using Docker swarm
    docker_swarm:
      state: absent
      force: true

  - name: Create a Swarm cluster
    docker_swarm:
      state: present
      advertise_addr: "{{ansible_default_ipv4.address}}"

  - name: install docker_stack python requirements
    pip:
      name: jsondiff,pyyaml

  - name: Create a stack without name
    register: output
    docker_stack:
      state: present
    ignore_errors: yes

  - name: assert failure when name not set
    assert:
      that:
      - output is failed
      - 'output.msg == "missing required arguments: name"'

  - name: Create a stack without compose
    register: output
    docker_stack:
      name: test_stack
    ignore_errors: yes

  - name: assert failure when compose not set
    assert:
      that:
      - output is failed
      - 'output.msg == "compose parameter must be a list containing at least one element"'

  - name: Ensure stack is absent
    register: output
    docker_stack:
      state: absent
      name: test_stack
      absent_retries: 30

  - name: Template compose files
    template:
      src: "{{item}}"
      dest: "{{output_dir}}/"
    with_items:
    - stack_compose_base.yml
    - stack_compose_overrides.yml

  - name: Create stack with compose file
    register: output
    docker_stack:
      state: present
      name: test_stack
      compose:
      - "{{output_dir}}/stack_compose_base.yml"

  - name: assert test_stack changed on stack creation with compose file
    assert:
      that:
      - output is changed

  # FIXME: updating the stack prevents leaving the swarm on Shippable
  #- name: Update stack with YAML
  #  register: output
  #  docker_stack:
  #    state: present
  #    name: test_stack
  #    compose:
  #    - "{{stack_compose_base}}"
  #    - "{{stack_compose_overrides}}"
  #
  #- name: assert test_stack correctly changed on update with yaml
  #  assert:
  #    that:
  #    - output is changed
  #    - output.stack_spec_diff == stack_update_expected_diff

  - name: Delete stack
    register: output
    docker_stack:
      state: absent
      name: test_stack
      absent_retries: 30

  - name: assert delete of existing stack returns changed
    assert:
      that:
      - output is changed

  - name: Delete stack again
    register: output
    docker_stack:
      state: absent
      name: test_stack
      absent_retries: 30

  - name: assert state=absent idempotency
    assert:
      that:
      - output is not changed

  always:
  - name: Remove a Swarm cluster
    docker_swarm:
      state: absent
      force: true