import java.net.URI;
import java.net.URL;
import java.util.Locale;
import java.util.Map;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;

public class Message {

  private TemplateEngine templateEngine;
  private URI uri;

  private Message(TemplateEngine templateEngine, URI uri) {
    this.templateEngine = templateEngine;
    this.uri = uri;
  }

  public String getText() {
    return templateEngine
        .process("template.txt", new Context(Locale.getDefault(), Map.of("uri", uri)));
  }

  public static Message newInstance(URI uri) {
    ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
    templateResolver.setPrefix("templates/");
    templateResolver.setSuffix(".txt");
    templateResolver.setTemplateMode(TemplateMode.TEXT);

    TemplateEngine templateEngine = new TemplateEngine();
    templateEngine.setTemplateResolver(templateResolver);

    return new Message(templateEngine, uri);
  }

  public static void main(String[] args) {
    System.out.println(Message.newInstance(URI.create("https://google.com")).getText());
  }
}