---
- name: Init first server node
  when: ansible_hostname == groups['server'][0]
  block:
    - name: Copy K3s service file [Single]
      when: groups['server'] | length == 1
      ansible.builtin.template:
        src: "k3s-single.service.j2"
        dest: "{{ systemd_dir }}/k3s.service"
        owner: root
        group: root
        mode: 0644

    - name: Copy K3s service file [HA]
      when: groups['server'] | length > 1
      ansible.builtin.template:
        src: "k3s-cluster-init.service.j2"
        dest: "{{ systemd_dir }}/k3s.service"
        owner: root
        group: root
        mode: 0644

    - name: Add service enviorment variables
      when: extra_service_envs is defined
      ansible.builtin.lineinfile:
        path: "{{ systemd_dir }}/k3s.service.env"
        line: "{{ item }}"
      with_items: "{{ extra_service_envs }}"

    - name: Enable and check K3s service
      ansible.builtin.systemd:
        name: k3s
        daemon_reload: true
        state: started
        enabled: true

    - name: Create directory .kube
      ansible.builtin.file:
        path: ~{{ ansible_user }}/.kube
        state: directory
        owner: "{{ ansible_user }}"
        mode: "u=rwx,g=rx,o="

    - name: Pause to allow first server startup
      when: (groups['server'] | length) > 1
      ansible.builtin.pause:
        seconds: 10

    - name: Copy config file to user home directory
      ansible.builtin.copy:
        src: /etc/rancher/k3s/k3s.yaml
        dest: ~{{ ansible_user }}/.kube/config
        remote_src: true
        owner: "{{ ansible_user }}"
        mode: "u=rw,g=,o="

    - name: Add K3s autocomplete to user bashrc
      become: true
      become_user: "{{ ansible_user }}"
      ansible.builtin.command:
        cmd: "k3s completion bash -i"
      register: out
      changed_when: out.rc != 0

    - name: Change server to API endpoint instead of localhost
      ansible.builtin.command: >-
         /usr/local/bin/k3s kubectl config set-cluster default
          --server=https://{{ api_endpoint }}:{{ api_port }}
          --kubeconfig ~{{ ansible_user }}/.kube/config
      changed_when: true

    - name: Copy kubectl config to local machine
      ansible.builtin.fetch:
        src: ~{{ ansible_user }}/.kube/config
        dest: ~/.kube/config
        flat: true

- name: Start other server if any and verify status
  when:
    - (groups['server'] | length) > 1
    - ansible_hostname != groups['server'][0]
  block:
    - name: Copy K3s service file [HA]
      when: groups['server'] | length > 1
      ansible.builtin.template:
        src: "k3s-ha.service.j2"
        dest: "{{ systemd_dir }}/k3s.service"
        owner: root
        group: root
        mode: 0644

    - name: Enable and check K3s service
      ansible.builtin.systemd:
        name: k3s
        daemon_reload: true
        state: started
        enabled: true

    - name: Verify that all server nodes joined
      when: (groups['server'] | length) > 1
      ansible.builtin.command:
        cmd: >
          k3s kubectl get nodes -l "node-role.kubernetes.io/control-plane=true" -o=jsonpath="{.items[*].metadata.name}"
      register: nodes
      until: nodes.rc == 0 and (nodes.stdout.split() | length) == (groups['server'] | length)
      retries: 20
      delay: 10
      changed_when: false

- name: Create symlinks
  ansible.builtin.file:
    src: /usr/local/bin/k3s
    dest: /usr/local/bin/{{ item }}
    state: link
  with_items:
    - kubectl
    - crictl