Change default to return self Public IP

main.go

@@ -14,7 +14,7 @@ func main() {
 	utils.ParseFlags(&ip, &properties, &detail)
 
 	// Use the IP-API to lookup the IP address
-	data := ipapi.Lookup(ip)
+	data := ipapi.Lookup(&ip, &properties)
 
 	// Format the data to a string
 	result := ipapi.GetProperties(data, properties, detail)

src/ipapi/ip_api.go

@@ -45,15 +45,24 @@ func buildURL(ip string) string {
 // Get IP-API data about IP
 //
 // https://ip-api.com/docs/api:json
-func Lookup(ip string) *IPAPI {
+func Lookup(ip *string, properties *string) *IPAPI {
 	var data *IPAPI
 
-	if !utils.CheckValidIP(ip) {
-		utils.PrintOut("Invalid IP address")
-		utils.Exit(1)
-	}
+	if *ip == "" {
+		if *properties == "" {
+			*properties = "Query"
+		}
+	} else {
+		if *properties == "" {
+			*properties = "Country"
+		}
+		if !utils.CheckValidIP(*ip) {
+			utils.PrintOut("Invalid IP address during Lookup")
+			utils.Exit(1)
+		}
 
-	url := buildURL(ip)
+	}
+	url := buildURL(*ip)
 	resp, err := http.Get(url)
 	utils.HandleError(err)
 

src/utils/utils.go

@@ -12,7 +12,7 @@ import (
 // https://golang.org/pkg/flag/
 func ParseFlags(ip *string, properties *string, detail *bool) {
 	flag.StringVar(ip, "ip", "", "IP address to lookup")
-	flag.StringVar(properties, "p", "Country", "Properties to retrieve")
+	flag.StringVar(properties, "p", "", "Properties to retrieve")
 	flag.BoolVar(detail, "d", false, "Show Detail")
 	flag.Parse()
 }