mstar-webserver/main.go

package main

import (
	"fmt"
	"html/template"
	"log"
	"net/http"
	"os"
)

func main() {
	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
		log.Printf("Defaulting to port %s \n", port)
	}

	// Custom-ish paths. Includes templates
	http.HandleFunc("/", handleRoot)

	// static files in /static
	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./static"))))

	// .well-known from /well-known
	http.Handle("/.well-known/", http.StripPrefix("/.well-known/", http.FileServer(http.Dir("./well-known"))))

	// Static files not in /static or /.well-known
	http.HandleFunc("/robots.txt", buildHTTPFileReader("robots.txt"))
	http.HandleFunc("/humans.txt", buildHTTPFileReader("humans.txt"))
	if err := http.ListenAndServe(":"+port, nil); err != nil {
		log.Fatal(err)
	}
}

func handleRoot(w http.ResponseWriter, r *http.Request) {
	tmpl, err := template.ParseFiles("templates/index.html")
	if err != nil {
		http.Error(w, "Couldn't parse template file", http.StatusInternalServerError)
		return
	}
	err = tmpl.Execute(w, "Nothing lol")
	if err != nil {
		http.Error(w, "Failed to execute template", http.StatusInternalServerError)
	}
}

func buildHTTPFileReader(path string) func(w http.ResponseWriter, r *http.Request) {
	return func(w http.ResponseWriter, r *http.Request) {
		file, err := os.ReadFile(path)
		if err != nil {
			http.Error(w, "Failed to load file", http.StatusInternalServerError)
			return
		}
		fmt.Fprintf(w, "%s", file)
	}
}