#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from ipaddress import ip_address, ip_network, summarize_address_range, ip_interface


def parse_targets(target):
    try:
        if "-" in target:
            start_ip, end_ip = target.split("-")
            try:
                end_ip = ip_address(end_ip)
            except ValueError:
                first_three_octets = start_ip.split(".")[:-1]
                first_three_octets.append(end_ip)
                end_ip = ip_address(".".join(first_three_octets))

            for ip_range in summarize_address_range(ip_address(start_ip), end_ip):
                for ip in ip_range:
                    yield str(ip)
        else:
            if ip_interface(target).ip.version == 6 and ip_address(target).is_link_local:
                yield str(target)
            else:
                for ip in ip_network(target, strict=False):
                    yield str(ip)
    except ValueError as e:
        yield str(target)