---
- name: IP Address Alias Testing
  hosts: all
  gather_facts: true

  vars:
    interface_file: /etc/sysconfig/network-scripts/ifcfg-eth0
    default_ipv4: "{{ ansible_default_ipv4['address'] }}"
    iface_cfg_path: /etc/sysconfig/network-scripts

  tasks:
    # - name: Debug all vars
    #   ansible.builtin.debug:
    #     var: ansible_facts

    - name: Display the default IPV4 IP
      ansible.builtin.debug:
        msg: "The default IPv4 IP address is: {{ default_ipv4 }}"

    - name: Debug ansible_interfaces
      ansible.builtin.debug:
        var: ansible_interfaces

    - name: Find the interface for a given IP address
      ansible.builtin.set_fact:
        interface_name: "ansible_{{ ansible_interfaces | map('extract', ansible_facts) | selectattr('ipv4.address', 'equalto', default_ipv4) | map(attribute='device') | first }}"

    - name: Display the interface name
      ansible.builtin.debug:
        msg: "The interface for IP address {{ default_ipv4 }} is {{ interface_name }}"

    - name: Detect if the default interface has IP aliases defined
      ansible.builtin.debug:
        msg: "Aliases were defined for {{ inventory_hostname }}"
      when:
        - "interface_name['ipv4_secondaries'] is defined"

    - name: Capture how many aliases are attached to ifcfg-eth0
      ansible.builtin.shell:
        cmd: |
          set -o pipefail
          grep -o 'IPADDR' {{ iface_cfg_path }}/ifcfg-{{ interface_name }} | wc -l
      ignore_errors: true
      register: ifcfg_alias_count

    - name: Display number of aliases
      ansible.builtin.debug:
        msg: "Found {{ ifcfg_alias_count.stdout }} aliases referenced in {{ interface_file }}."

    - name: Run ip command to list IP addresses
      ansible.builtin.command: ip addr show
      register: ip_output

    - name: Check for IP address aliases
      ansible.builtin.debug:
        msg: "IP address aliases found: {{ item }}"
      loop: "{{ ip_output.stdout_lines }}"
      when: item | regex_search('inet .* secondary')