---
# Copyright (c) Ansible Project
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

####################################################################
# WARNING: These are designed specifically for Ansible tests       #
# and should not be used as examples of how to write Ansible roles #
####################################################################

- name: Create random names
  set_fact:
    cname: "{{ 'ansible-container-%0x' % ((2**32) | random) }}"
    nname: "{{ 'ansible-network-%0x' % ((2**32) | random) }}"
    vname: "{{ 'ansible-volume-%0x' % ((2**32) | random) }}"

- block:
  # Create objects to be pruned
  - name: Create container (without volume)
    docker_container:
      name: "{{ cname }}"
      image: "{{ docker_test_image_hello_world }}"
      state: present
    register: container
  - name: Create network
    docker_network:
      name: "{{ nname }}"
      state: present
    register: network
  - name: Create named volume
    docker_volume:
      name: "{{ vname }}"
      state: present
    register: volume
  - name: Create anonymous volume
    command: docker volume create
    register: volume_anon

  - name: List volumes
    command: docker volume list

  # Prune objects
  - name: Prune everything
    docker_prune:
      containers: true
      images: true
      networks: true
      volumes: true
      builder_cache: true
    register: result

  # Analyze result
  - name: Show results
    debug:
      var: result
  - name: General checks
    assert:
      that:
      - result is changed
      # containers
      - container.container.Id in result.containers
      - "'containers_space_reclaimed' in result"
      # images
      - "'images_space_reclaimed' in result"
      # networks
      - network.network.Name in result.networks
      # volumes
      - volume_anon.stdout in result.volumes
      - "'volumes_space_reclaimed' in result"
      # builder_cache
      - "'builder_cache_space_reclaimed' in result"
  - name: API-version specific volumes check (API version before 1.42)
    assert:
      that:
      # For API version 1.41 and before, pruning always considers all volumes
      - volume.volume.Name in result.volumes
    when: docker_api_version is version('1.42', '<')
  - name: API-version specific volumes check (API version 1.42+)
    assert:
      that:
      # For API version 1.41 and before, pruning considers only anonymous volumes,
      # so our named container is not removed
      - volume.volume.Name not in result.volumes
    when: docker_api_version is version('1.42', '>=')

  # Prune objects again
  - name: Prune everything again (should have no change)
    docker_prune:
      containers: true
      images: true
      networks: true
      volumes: true
      builder_cache: true
    register: result

  # Analyze result
  - name: Show results
    debug:
      var: result
  - name: General checks
    assert:
      that:
      - result is not changed
      # containers
      - result.containers == []
      - result.containers_space_reclaimed == 0
      # images
      - result.images == []
      - result.images_space_reclaimed == 0
      # networks
      - result.networks == []
      # volumes
      - result.volumes == []
      # builder_cache
      - result.builder_cache_space_reclaimed == 0

  # Test with filters
  - name: Prune with filters
    docker_prune:
      images: true
      images_filters:
        dangling: true
    register: result

  - name: Show results
    debug:
      var: result

  - name: Prune volumes with all filter (API version 1.42+)
    when: docker_api_version is version('1.42', '>=')
    block:
    - name: Prune with filters
      docker_prune:
        volumes: true
        volumes_filters:
          all: true
      register: result

    - name: Show results
      debug:
        var: result

    - name: Check results
      assert:
        that:
          - result is changed
          - volume.volume.Name in result.volumes
          - "'volumes_space_reclaimed' in result"

  when: docker_api_version is version('1.25', '>=')

- fail: msg="Too old docker / docker-py version to run docker_prune tests!"
  when: not(docker_api_version is version('1.25', '>=')) and (ansible_distribution != 'CentOS' or ansible_distribution_major_version|int > 6)