---
- name: Host Discovery with Nmap Probing Port 22
  hosts: localhost
  connection: local
  vars:
    networks:
      - 192.168.1.0/24  # Add your networks here
    output_file: discovered_hosts.json
  tasks:
    - name: Install nmap if not present
      become: true
      ansible.builtin.apt:
        name: nmap
        state: present
        update_cache: true
    - name: Perform Nmap scan on each network
      ansible.builtin.shell:
        cmd: nmap -sT -p 22 -Pn --open -R -oG - {{ item }}
      register: scans
      loop: "{{ networks }}"
      changed_when: false
    - name: Combine all scan outputs
      ansible.builtin.set_fact:
        all_output: "{{ scans.results | map(attribute='stdout') | join('\n') }}"
    - name: Extract host lines
      ansible.builtin.set_fact:
        host_lines: "{{ all_output.splitlines() | select('search', '^Host:') | list }}"
    - name: Parse hosts into list
      ansible.builtin.set_fact:
        hosts_list: "{{ hosts_list | default([]) + [{'ip': ip, 'hostname': hostname}] }}"
      loop: "{{ host_lines }}"
      vars:
        line: "{{ item }}"
        host_part: "{{ line.split('\t')[0] }}"
        parts: "{{ host_part.split(' ') }}"
        ip: "{{ parts[1] }}"
        hostname: "{{ parts[2] | replace('(', '') | replace(')', '') }}"
    - name: Save to JSON file
      ansible.builtin.copy:
        content: "{{ {'hosts': hosts_list} | to_nice_json }}"
        dest: "{{ output_file }}"