package main

import (
	"encoding/json"
	"net/http"
	"net/url"
	"os"
)

type CaptchaResponse struct {
	Success bool `json:"success"`
}

func ValidateCaptcha(captcha string) bool {
	secretKey := os.Getenv("CAPTCHA_SERVER_KEY")
	if secretKey == "" {
		return true // Skip validation if CAPTCHA is disabled
	}

	resp, err := http.PostForm("https://www.google.com/recaptcha/api/siteverify", url.Values{
		"secret":   {secretKey},
		"response": {captcha},
	})
	if err != nil {
		return false
	}
	defer resp.Body.Close()

	var result CaptchaResponse
	err = json.NewDecoder(resp.Body).Decode(&result)
	return err == nil && result.Success
}