package test;

import org.htmlunit.BrowserVersion;
import org.htmlunit.WebClient;
import org.htmlunit.html.DomElement;
import org.htmlunit.html.DomNodeList;
import org.htmlunit.html.HtmlPage;
import org.junit.jupiter.api.Test;
public class JavascriptPageLoadTest {

    private static final long TIMEOUT = 30000 * 6; // 30 seconds * 6 = 3 minutes;

    @Test
    public void parsePageNonMature() throws Exception {
        try (final WebClient webClient = new WebClient(BrowserVersion.BEST_SUPPORTED)) {
            webClient.getOptions().setScreenWidth(2560);
            webClient.getOptions().setScreenWidth(1440);
            webClient.getOptions().setCssEnabled(true);
            webClient.getOptions().setJavaScriptEnabled(true);
            webClient.getOptions().setThrowExceptionOnScriptError(false);
            webClient.getOptions().setMaxInMemory(-1);

            HtmlPage page = webClient.getPage("https://romhacking.com/hack/Muhly-64");
            String pageAsXML = null;
            while (pageAsXML == null) {
                long start = System.currentTimeMillis();
                if (System.currentTimeMillis() - start > TIMEOUT) {
                    throw new RuntimeException("Webpage load timeout.");
                }
                Thread.sleep(500);
                DomNodeList<DomElement> links = page.getElementsByTagName("a");
                pageAsXML = page.asXml();
                if (!pageAsXML.contains("<a download href=")) {
                    pageAsXML = null;
                }
            }
            System.out.println(pageAsXML);
        }
    }
}