---
# roles/swarm_dozzle_agent/tasks/main.yml
# Deploy a global Dozzle agent service so the Watchtower Dozzle UI can read logs from all swarm nodes.

- name: Check if dozzle-agent service exists
  ansible.builtin.command: docker service ls --format '{{"{{"}}.Name{{"}}"}}'
  register: swarm_services
  changed_when: false

- name: Create dozzle-agent swarm service
  ansible.builtin.command: >-
    docker service create
    --name {{ dozzle_agent_service_name }}
    --mode global
    --restart-condition any
    --publish mode=host,target={{ dozzle_agent_port }},published={{ dozzle_agent_port }}
    --mount type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock,ro
    {{ dozzle_agent_image }}
    agent
  when: dozzle_agent_service_name not in swarm_services.stdout_lines

- name: Update dozzle-agent swarm service
  ansible.builtin.command: >-
    docker service update
    --image {{ dozzle_agent_image }}
    --force
    {{ dozzle_agent_service_name }}
  when: dozzle_agent_service_name in swarm_services.stdout_lines
  changed_when: true

- name: Verify dozzle-agent is running globally
  ansible.builtin.command: docker service ps --filter desired-state=running {{ dozzle_agent_service_name }} --format '{{"{{"}}.Node{{"}}"}}'
  register: dozzle_agent_ps
  changed_when: false

- name: Assert dozzle-agent replicas running on all nodes
  ansible.builtin.assert:
    that:
      - dozzle_agent_ps.stdout_lines | length >= groups['swarm_hosts'] | length
    fail_msg: "Dozzle agents are not running on all swarm nodes yet"
    success_msg: "Dozzle agents running across swarm nodes"