#!/bin/bash

# Scan the network to discover hosts
nmap -sn 192.168.1.0/24 -oG - | awk '/Up$/{print $2}' > hosts.txt

# Create the Ansible inventory file in YAML format
echo "all:" > inventory.yml

while read -r ip_address; do
    dns_name=$(dig -x "$ip_address" +short | sed -e 's/\.$//')
    if [ -n "$dns_name" ]; then
        echo "  hosts:" >> inventory.yml
        echo "    $dns_name:" >> inventory.yml
        echo "      ansible_host: $ip_address" >> inventory.yml
    fi
done < hosts.txt

echo "Inventory file created: inventory.yml"