---
- name: Check if k3s service exists
  stat:
    path: /etc/systemd/system/k3s.service
  register: k3s_service

- name: Check if k3s is part of cluster
  stat:
    path: /var/lib/rancher/k3s/server/node-token
  register: k3s_cluster_member

- name: Download k3s install script
  get_url:
    url: https://get.k3s.io
    dest: /tmp/install-k3s.sh
    mode: "0755"
  when: not k3s_service.stat.exists

- name: Install k3s server (primary)
  environment:
    INSTALL_K3S_VERSION: "{{ k3s_version if k3s_version != 'latest' else '' }}"
    K3S_TOKEN: "{{ k3s_token }}"
  command: /tmp/install-k3s.sh server --cluster-init --advertise-address={{ k3s_primary_ip }} --node-ip={{ k3s_node_ip }}
  when: 
    - not k3s_service.stat.exists
    - k3s_primary | default(false)

- name: Install k3s server (secondary)
  environment:
    INSTALL_K3S_VERSION: "{{ k3s_version if k3s_version != 'latest' else '' }}"
    K3S_TOKEN: "{{ k3s_token }}"
  command: /tmp/install-k3s.sh server --server https://{{ k3s_primary_ip }}:6443 --advertise-address={{ k3s_node_ip }} --node-ip={{ k3s_node_ip }}
  when: 
    - not k3s_service.stat.exists
    - not (k3s_primary | default(false))

- name: Wait for k3s to be ready
  command: "{{ (k3s_primary | default(false)) | ternary('kubectl get nodes', 'systemctl is-active k3s') }}"
  register: k3s_ready
  until: k3s_ready.rc == 0
  retries: 120
  delay: 10
  changed_when: false

- name: Show k3s service status on failure
  command: systemctl status k3s --no-pager
  register: k3s_status
  changed_when: false
  failed_when: false
  when: k3s_ready is failed

- name: Show recent k3s logs on failure
  command: journalctl -u k3s -n 80 --no-pager
  register: k3s_journal
  changed_when: false
  failed_when: false
  when: k3s_ready is failed

- name: Fail with k3s diagnostics
  fail:
    msg: |
      k3s failed to become ready on {{ inventory_hostname }}.
      Service status:
      {{ k3s_status.stdout | default('n/a') }}

      Recent logs:
      {{ k3s_journal.stdout | default('n/a') }}
  when: k3s_ready is failed

- name: Copy kubeconfig to default location for root
  file:
    src: /etc/rancher/k3s/k3s.yaml
    dest: /root/.kube/config
    state: link
    force: true

- name: Ensure .kube directory exists for ansible user
  file:
    path: "/home/{{ ansible_user }}/.kube"
    state: directory
    mode: "0755"
  when: ansible_user != 'root'