package util

import (
	"encoding/json"
	"log"
	"net"
	"net/http"
	"strings"
)

type LocationResult struct {
	Country string `json:"country"`
	Region  string `json:"regionName"`
	City    string `json:"city"`
}

func GetLocation(ip string) (LocationResult, error) {
	var loc LocationResult
	// Example using ipinfo.io free API
	resp, err := http.Get("http://ip-api.com/json/" + ip + "?fields=25")
	if err != nil {
		return loc, err
	}
	defer resp.Body.Close()
	json.NewDecoder(resp.Body).Decode(&loc)
	return loc, nil
}

func GetClientIP(r *http.Request) string {
	// This header will be set by ngrok to the original client IP
	if xff := r.Header.Get("X-Forwarded-For"); xff != "" {
		log.Printf("DEBUG: Getting IP from X-Forwarded-For: %s\n", xff)
		// X-Forwarded-For: client, proxy1, proxy2, ...
		ips := strings.Split(xff, ",")
		if len(ips) > 0 {
			return strings.TrimSpace(ips[0])
		}
	}
	// Fallback to RemoteAddr (not the real client IP, but just in case)
	host, _, err := net.SplitHostPort(r.RemoteAddr)
	log.Printf("DEBUG: Falling to request remote addr: %s (%s)\n", host, r.RemoteAddr)
	if err != nil {
		return r.RemoteAddr
	}
	return host
}