package main

import (
	"fmt"
	"io"
	"log"
	"net/http"
	"strings"
)

func handler(w http.ResponseWriter, r *http.Request) {
	fmt.Println(strings.Repeat("~", 80))

	if r.Host != "" {
		fmt.Printf("Host: %s\n\n", r.Host)
	}

	if len(r.Header) > 0 {
		fmt.Println("--- Headers ---")
		for name, values := range r.Header {
			for _, value := range values {
				fmt.Printf("%s: %s\n", name, value)
			}
		}
		fmt.Println()
	}

	if len(r.URL.Query()) > 0 {
		fmt.Println("--- URL Parameters ---")
		r.ParseForm()
		for key, values := range r.URL.Query() {
			for _, value := range values {
				fmt.Printf("%s: %s\n", key, value)
			}
		}
		fmt.Println()
	}

	if len(r.Cookies()) > 0 {
		fmt.Println("--- Cookies ---")
		for _, cookie := range r.Cookies() {
			fmt.Printf("%s: %s\n", cookie.Name, cookie.Value)
		}
		fmt.Println()
	}

	bodyBytes, err := io.ReadAll(r.Body)
	if err != nil {
		fmt.Println("Error reading body:", err)
	} else {
		if bodyStr := string(bodyBytes); bodyStr != "" {
			fmt.Println("--- Body ---")
			fmt.Println(bodyStr)
			fmt.Println()
		}
	}
	defer r.Body.Close()

	fmt.Println("--- Client IP ---")
	fmt.Println(r.RemoteAddr)
}

func main() {
	http.HandleFunc("/", handler)
	fmt.Println("Server started at http://localhost:8080")
	log.Fatal(http.ListenAndServe(":8080", nil))
}