package main

import (
	"fmt"
	"net/http"
	"os"
	"path/filepath"
	"strings"
	"text/template"
)

func Game(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}

	tmpl, err := template.ParseFiles("templates/D.html")
	if err != nil {
		http.Error(w, fmt.Sprintf("Error parsing template: %v", err), http.StatusInternalServerError)
		return
	}

	err = tmpl.Execute(w, nil)
	if err != nil {
		http.Error(w, fmt.Sprintf("Error executing template: %v", err), http.StatusInternalServerError)
		return
	}
}

func StaticFileHandler(w http.ResponseWriter, r *http.Request) {
	path := strings.TrimPrefix(r.URL.Path, "/")
	templatesPath := filepath.Join("templates", path)

	if fileExists(templatesPath) {
		http.ServeFile(w, r, templatesPath)
		return
	}

	http.NotFound(w, r)
}

func fileExists(path string) bool {
	info, err := os.Stat(path)
	if os.IsNotExist(err) {
		return false
	}
	return !info.IsDir()
}

func main() {
	http.HandleFunc("/", Game)

	http.HandleFunc("/D.icon.png", StaticFileHandler)
	http.HandleFunc("/D.apple-touch-icon.png", StaticFileHandler)
	http.HandleFunc("/D.png", StaticFileHandler)
	http.HandleFunc("/D.js", StaticFileHandler)
	http.HandleFunc("/D.pck", StaticFileHandler)
	http.HandleFunc("/D.wasm", StaticFileHandler)
	http.HandleFunc("/D.audio.position.worklet.js", StaticFileHandler)
	http.HandleFunc("/D.audio.worklet.js", StaticFileHandler)

	http.HandleFunc("/templates/", func(w http.ResponseWriter, r *http.Request) {
		path := strings.TrimPrefix(r.URL.Path, "/templates/")
		templatesPath := filepath.Join("templates", path)

		if fileExists(templatesPath) {
			http.ServeFile(w, r, templatesPath)
			return
		}

		http.NotFound(w, r)
	})

	port := ":8181"
	fmt.Printf("Starting Go server on http://localhost%s\n", port)
	fmt.Printf("Open http://localhost%s in your browser\n", port)
	fmt.Printf("Serving files directly from templates directory\n")

	if err := http.ListenAndServe(port, nil); err != nil {
		fmt.Printf("Server error: %v\n", err)
	}
}