package main import ( "log" "net/http" "os" "github.com/joho/godotenv" "github.com/rjNemo/go-wiki/controller" "github.com/rjNemo/go-wiki/settings" ) var port string = readEnv(settings.EnvFile) func main() { startServer(port, controller.Router) } func startServer(p string, r func()) { log.Printf("Start Go-wiki server on http://localhost:%s\n", port) port := ":" + p r() log.Fatal(http.ListenAndServe(port, nil)) } func readEnv(f string) string { err := godotenv.Load(f) if err != nil { log.Fatal("Error loading .env file") } port := os.Getenv("PORT") if port == "" { log.Fatal("PORT must be set. Consider verify your EnvFile.") } return port }