# create backup copies of system files on managed node
#
#   https://www.freekb.net/Article?id=759
#   https://docs.ansible.com/ansible/latest/collections/ansible/builtin/copy_module.html
#   https://docs.ansible.com/ansible/latest/collections/ansible/builtin/file_module.html
#   https://docs.ansible.com/ansible/latest/collections/ansible/builtin/copy_module.html
#   https://phoenixnap.com/kb/ansible-check-if-file-exists
#   https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_variables.html#registering-variables
#   https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_conditionals.html
#
#   https://www.howtouselinux.com/post/ansible-copy-module-examples-to-copy-file-to-remote-server
#   

---
- name: "09 - custom ansible - backup system files on controller"
  hosts: localhost
  tasks:
  - name: check backup directory status
    ansible.builtin.stat:
      path: "{{ backup_etc_dir }}"
    register: backup_dir
    tags: ['backup_dir_status']

  - name: create backup directory if it does not exist
    ansible.builtin.file:
      path: "{{ backup_etc_dir }}"
      state: directory
    when: backup_dir.stat.isdir is not defined
    tags: ['create_backup_dir']

#- name: Print a debug message
#  ansible.builtin.debug:
#    msg: "isdir isn't defined (path doesn't exist)"
#  when: backup_dir.stat.islnk is not defined

  - name: backup special '/etc/' files locally
    ansible.builtin.shell: |
      sudo cp -a /etc/hosts.allow {{ backup_etc_dir }}/
           cp -a /etc/hosts.deny {{ backup_etc_dir }}/
           cp -a /etc/inetd.conf {{ backup_etc_dir }}/
           cp -a /etc/sudoers {{ backup_etc_dir }}/
           cp -a /etc/hosts {{ backup_etc_dir }}/
           cp -a /etc/fstab {{ backup_etc_dir }}/
           cp -a /etc/inittab {{ backup_etc_dir }}/
      exit 0
    delegate_to: localhost
    run_once: true
    when: backup_dir.stat.isdir is defined
    tags: ['backup_files']