package main

import (
	"fmt"
	"strings"
)

const ipdenyBaseURL = "https://www.ipdeny.com/ipblocks/data/aggregated"

// IPDenyProvider fetches GeoIP data from ipdeny.com.
// IPDeny provides aggregated country-level IP blocks derived from RIR data.
// Website: https://www.ipdeny.com/ipblocks/
type IPDenyProvider struct{}

func (p *IPDenyProvider) Name() string {
	return "ipdeny"
}

// FetchCIDRs downloads IPv4 CIDR blocks for a country from ipdeny.
// URL format: https://www.ipdeny.com/ipblocks/data/aggregated/{cc}-aggregated.zone
func (p *IPDenyProvider) FetchCIDRs(countryCode string) ([]string, error) {
	url := fmt.Sprintf("%s/%s-aggregated.zone", ipdenyBaseURL, strings.ToLower(countryCode))
	return downloadAndParseCIDRs(url)
}