package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
)

type IPInfo struct {
	Code string `json:"code"`
	Data struct {
		Continent string `json:"continent"`
		Country   string `json:"country"`
	} `json:"data"`
	IP  string `json:"ip"`
	Msg string `json:"msg"`
}

func main() {
	if len(os.Args) < 2 {
		log.Fatalf("Usage: %s <IP>", os.Args[0])
	}

	// 目标 URL
	url := "https://qifu.baidu.com/ip/geo/v1/district?ip=" + os.Args[1]

	// 发送 GET 请求
	resp, err := http.Get(url)
	if err != nil {
		log.Fatalf("Error making GET request: %v", err)
	}
	defer resp.Body.Close()

	// 读取响应体
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatalf("Error reading response body: %v", err)
	}

	// 解析 JSON 数据
	var ipInfo IPInfo
	if err := json.Unmarshal(body, &ipInfo); err != nil {
		log.Fatalf("Error parsing JSON: %v", err)
	}

	// 提取并打印 continent 和 country 字段
	fmt.Printf("%s%s\n", ipInfo.Data.Continent, ipInfo.Data.Country)

}