package main

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

type Index struct {
  WebpageTitle string
}

func indexHandler(w http.ResponseWriter, req *http.Request) {
  tmpl, err := template.ParseFiles("src/index.tmpl")
  if err != nil {
    http.Error(w, "Error loading template", http.StatusInternalServerError)
    log.Println("Error parsing template:", err)
    return
  }

  data := &Index{
    WebpageTitle: "Keyemail",
  }

  err = tmpl.Execute(w, data)

  if err != nil {
    http.Error(w, "Error loading template", http.StatusInternalServerError)
    log.Println("Error executing template:", err)
    return
  }
}

func main() {
  if _, err := os.Stat("src/index.tmpl"); os.IsNotExist(err) {
    log.Fatal("Template file does not exist:\n", err)
  }

  port := ":3939"

  http.HandleFunc("/", indexHandler)
  log.Println("Server running at http://localhost" + port)
  http.ListenAndServe(port, nil)
}