package main

// Import necessary packages
import (
	"encoding/json"
	"fmt"
	"net/http"
)

// Define the handler function
func handler(req http.ResponseWriter, res *http.Request) {
	// Initialize a map to hold the response body
	response := map[string]string{
		"message": "Hello, World!", // Set the message to "Hello, World!"
	}

	// Set the Content-Type header to application/json
	req.Header().Set("Content-Type", "application/json")

	// Encode the response map into JSON and write it to the response
	json.NewEncoder(req).Encode(response)

	// Marshal the response map into JSON
	responseJson, err := json.Marshal(response)
	if err != nil {
		http.Error(req, err.Error(), http.StatusInternalServerError)
		return
	}

	// Print the JSON response to stdout
	fmt.Println(string(responseJson))
}