package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
	// Read the HTML content from the file
	content, err := ioutil.ReadFile("teapot.html")
	if err != nil {
		http.Error(w, "Internal Server Error: Could not read HTML file", http.StatusInternalServerError)
		log.Println("Error reading HTML file:", err)
		return
	}

	// Write the content to the response writer
	w.WriteHeader(http.StatusTeapot) // Set the 418 status code
	fmt.Fprintf(w, string(content))  //Write the entire content as a string
}

func main() {
	portPtr := flag.Int("port", 8080, "Port to listen on")
	flag.Parse()

	port := *portPtr // Dereference the pointer

	fmt.Printf("Server listening on port %d...\n", port)
	http.HandleFunc("/", handler) // Register the handler for all requests on root path "/"
	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil))
}