package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"
)

func http_new_route[T any](route string, handle_func func(request *http.Request) (T)) {
	http.HandleFunc("/" + route, func(w http.ResponseWriter, r *http.Request) {
		result, err := json.Marshal(handle_func(r))
		if err != nil {
			log.Fatal(err)
		}

		w.Write(result)
	})
}

func main() {
	type foo_response_body struct {
		Field1 string
		Field2 http.Header
	}
	foo_route_handler := func(request *http.Request) foo_response_body {

		fmt.Println(request.Header)

		return foo_response_body{
			Field1: "hi there on foo!",
			Field2: request.Header,
		}
	}
	http_new_route("foo", foo_route_handler)

	type bar_response_body struct {
		Response int
		Message string
	}
	bar_route_handler := func(request *http.Request) bar_response_body {
		return bar_response_body{
			Response: 400,
			Message: "hi there on bar!",
		}
	}
	http_new_route("bar", bar_route_handler)

	http_server := &http.Server{
		Addr: ":8080",
		Handler: nil,
		ReadTimeout: 10 * time.Second,
		WriteTimeout: 10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	go func() {
		log.Fatal(http_server.ListenAndServe())
	}()
	fmt.Println("Server started! Listening in on ", http_server.Addr)

	sigs := make(chan os.Signal, 1)
	signal.Notify(sigs, os.Interrupt, syscall.SIGTERM)
	<-sigs
	fmt.Println("Server stopped!")
	os.Exit(1)
}