---
- name: Uninstall k3s from cluster nodes
  hosts: k3s
  become: true
  gather_facts: true

  pre_tasks:
    - name: Check if k3s is installed
      ansible.builtin.stat:
        path: /usr/local/bin/k3s-uninstall.sh
      register: uninstall_script

    - name: Display uninstall status
      ansible.builtin.debug:
        msg: "k3s uninstall script found: {{ 'YES' if uninstall_script.stat.exists else 'NO' }} on {{ inventory_hostname }}"

  tasks:
    - name: Run k3s uninstall script
      ansible.builtin.command: /usr/local/bin/k3s-uninstall.sh
      register: uninstall_result
      changed_when: uninstall_result.rc == 0
      when: uninstall_script.stat.exists

    - name: Display uninstall result
      ansible.builtin.debug:
        msg: "k3s uninstalled successfully on {{ inventory_hostname }}"
      when:
        - uninstall_script.stat.exists
        - uninstall_result.rc == 0

    - name: Display skip message
      ansible.builtin.debug:
        msg: "k3s was not installed on {{ inventory_hostname }} - nothing to do"
      when: not uninstall_script.stat.exists

    - name: Clean up k3s configuration directory
      ansible.builtin.file:
        path: /etc/rancher/k3s
        state: absent

    - name: Clean up k3s data directory
      ansible.builtin.file:
        path: /var/lib/rancher/k3s
        state: absent

  post_tasks:
    - name: Verify k3s is removed
      ansible.builtin.command: k3s --version
      register: k3s_check
      changed_when: false
      failed_when: false

    - name: Display verification result
      ansible.builtin.debug:
        msg: "k3s verification on {{ inventory_hostname }}: {{ 'STILL PRESENT' if k3s_check.rc == 0 else 'REMOVED' }}"