---
- name: microk8s | Enumerate all cluster HA hosts within the hosts file
  become: true
  ansible.builtin.blockinfile:
    dest: /etc/hosts
    marker: "# {mark} ANSIBLE MANAGED: microk8s HA Cluster Hosts"
    content: |
      {% for host in groups[microk8s_group_HA] %}
      {{ hostvars[host].ansible_default_ipv4.address }} {{ hostvars[host].ansible_hostname }}
      {% endfor %}

- name: microk8s | Find the designated host
  ansible.builtin.set_fact:
    designated_host: '{{ (groups[microk8s_group_HA]|sort)[0] }}'

- name: microk8s | define ha characteristics
- block:
    - name: Waiting for microk8s to be ready on microk8s host master
      ansible.builtin.command: "microk8s status --wait-ready"
      delegate_to: "{{ designated_host }}"
      delegate_facts: true
      changed_when: false

    - name: Get the microk8s join command from the microk8s master
      ansible.builtin.shell: "microk8s add-node | grep -E -m1 'microk8s join {{ microk8s_ip_regex_ha }}'"
      delegate_to: "{{ designated_host }}"
      delegate_facts: true
      changed_when: false
      register: microk8s_join_command

    - name: Get microk8s cluster nodes
      ansible.builtin.command: "microk8s kubectl get node"
      delegate_to: "{{ designated_host }}"
      delegate_facts: true
      changed_when: false
      register: microk8s_cluster_node

    - name: Waiting for microk8s to be ready on microk8s host node
      ansible.builtin.command: "microk8s status --wait-ready"
      changed_when: false

    - name: Set the microk8s join command on the microk8s node
      ansible.builtin.command: "{{ microk8s_join_command.stdout }}"
      when: microk8s_cluster_node.stdout.find(inventory_hostname) == -1
      register: join_command_output
      failed_when:
        - "'already known to dqlite' not in join_command_output.stdout"
        - join_command_output.rc > 0

  become: true
  when:
    - inventory_hostname != designated_host
    - inventory_hostname in groups[microk8s_group_HA]

- name: microk8s | configure cluster addons
  include_tasks: addons.yml
  when: inventory_hostname == designated_host