package main

import (
	"fmt"
	"net"
	"os/exec"
	"strings"
)

var isLocalCIDR = "127.0.0.1/8"

func isLocal(addr string) bool {
	if strings.Contains(isLocalCIDR, ",") {
		for _, cidr := range strings.Split(isLocalCIDR, ",") {
			_, localNet, err := net.ParseCIDR(cidr)
			if err != nil {
				panic(err)
			}
			if localNet.Contains(net.ParseIP(strings.Split(addr, ":")[0])) {
				return true
			}
		}

		return false
	} else {
		_, localNet, err := net.ParseCIDR(isLocalCIDR)
		if err != nil {
			panic(err)
		}
		return localNet.Contains(net.ParseIP(strings.Split(addr, ":")[0]))
	}
}

// Allows the shareLink to be overridden instead of relying on autodetect
var shareLink = ""

func getShareLink() string {
	if shareLink != "" {
		return shareLink
	}

	return fmt.Sprintf("http://%s:%s/", GetHostIP(), getPort())
}

func getPort() string {
	s := strings.Split(Listen, ":")

	if len(s) != 2 {
		return Listen
	}

	return s[1]
}

// startBrowser runs the BrowserCommand func which just returns a []string
// containing our URL that varies based on each platform
func startBrowser(url string) {
	command := BrowserCommand(url)

	c := exec.Command(command[0], command[1:]...)
	Logger.Printf("Running command: %s result: %v", command, c.Run())
	return
}