package models

import (
	"fmt"
	"net"
	"net/url"
)

type Team struct {
	ID       int64
	Name     string
	Password string
}

func (t *Team) GetTeamUrl() (string, error) {
	ip := selectIP()
	u := fmt.Sprintf("http://%s:8100?name=%s&password=%s", ip, url.PathEscape(t.Name), t.Password)
	return u, nil
}

func selectIP() string {
	ips, err := getLocalIPs()
	if err != nil || len(ips) == 0 {
		return "127.0.0.1"
	}
	return ips[0]
}

func getLocalIPs() ([]string, error) {
	var ips []string
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		return nil, err
	}

	for _, addr := range addrs {
		ipNet, ok := addr.(*net.IPNet)
		if !ok {
			continue
		}

		ip := ipNet.IP
		if ip.IsLoopback() || ip.IsLinkLocalMulticast() || ip.IsLinkLocalUnicast() {
			continue
		}

		if ipv4 := ip.To4(); ipv4 != nil {
			ips = append(ips, ipv4.String())
		}
	}

	return ips, nil
}