/**
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.portal.gadget.server;

import java.io.IOException;
import java.net.URLEncoder;

import org.apache.shindig.auth.BasicSecurityToken;
import org.apache.shindig.auth.BasicSecurityTokenCodec;
import org.apache.shindig.auth.SecurityToken;
import org.apache.shindig.common.crypto.BlobCrypterException;
import org.exoplatform.portal.AbstractPortalTest;

import com.gargoylesoftware.htmlunit.CollectingAlertHandler;
import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
import com.gargoylesoftware.htmlunit.Page;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HTMLParserListener;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

/**
 * Base class for end-to-end tests.
 *
 * @author <a href="kienna@exoplatform.com">Kien Nguyen</a>
 * @version $Revision$
 */
public class EndToEndTest extends AbstractPortalTest {
    private static final String[] EXPECTED_RESOURCES = { "hello.xml", "coreFeatures.xml", "testframework.js" };

    static private EndToEndServer server = null;

    private WebClient webClient;

    private CollectingAlertHandler alertHandler;

    private SecurityToken token;

    private String language;

    public void testCheckResources() throws Exception {
        for (String resource : EXPECTED_RESOURCES) {
            String url = EndToEndServer.SERVER_URL + '/' + resource;
            Page p = webClient.getPage(url);
            assertEquals("Failed to load test resource " + url, 200, p.getWebResponse().getStatusCode());
        }
    }

    public void testHelloWorld() throws Exception {
        HtmlPage page = executeAllPageTests("hello");
        final String pageAsText = page.asText();
        assertTrue(pageAsText.contains("Hello, world!"));
    }

    public void testCoreFeature() throws Exception {
        HtmlPage page = executeAllPageTests("coreFeatures");
        final String pageAsText = page.asText();
        assertTrue(pageAsText.contains("Core Features Test Cases!"));
    }

    @Override
    public void tearDown() throws Exception {
        server.stop();
    }

    @Override
    public void setUp() throws Exception {
        server = new EndToEndServer();
        server.start();

        webClient = new WebClient();
        // NicelyResynchronizingAjaxController changes XHR calls from asynchronous
        // to synchronous, saving the test from needing to wait or sleep for XHR
        // completion.
        webClient.setAjaxController(new NicelyResynchronizingAjaxController());
        webClient.waitForBackgroundJavaScript(2000);
        webClient.setHTMLParserListener(HTMLParserListener.LOG_REPORTER);
        webClient.setTimeout(30000);

        alertHandler = new CollectingAlertHandler();
        webClient.setAlertHandler(alertHandler);
        token = createToken("canonical", "john.doe");
        language = null;
        server.clearDataServiceError();
    }

    /**
     * Executes a page test by loading the HTML page.
     *
     * @param testName name of the test, which must match a gadget XML file name in test/resources/endtoend (minus .xml).
     * @param testMethod name of the javascript method to execute
     * @return the parsed HTML page
     */
    private HtmlPage executePageTest(String testName, String testMethod, boolean caja) throws IOException {
        if (!testName.endsWith(".xml")) {
            testName = testName + ".xml";
        }

        String gadgetUrl = EndToEndServer.SERVER_URL + '/' + testName;
        String url = EndToEndServer.GADGET_BASEURL + "?url=" + URLEncoder.encode(gadgetUrl, "UTF-8");
        BasicSecurityTokenCodec codec = new BasicSecurityTokenCodec();
        url += "&st=" + URLEncoder.encode(codec.encodeToken(token), "UTF-8");
        if (testMethod != null) {
            url += "&testMethod=" + URLEncoder.encode(testMethod, "UTF-8");
        }
        if (caja) {
            url += "&caja=1&libs=caja";
        }

        url += "&nocache=1";
        if (language != null) {
            url += "&lang=" + language;
        }
        Page page = webClient.getPage(url);
        if (!(page instanceof HtmlPage)) {
            fail("Got wrong page type. Was: " + page.getWebResponse().getContentType());
        }
        webClient.waitForBackgroundJavaScript(3000);
        return (HtmlPage) page;
    }

    /**
     * Executes all page test in a single XML file.
     *
     * @param testName name of the test, which must match a gadget XML file name in test/resources/endtoend (minus .xml).
     * @throws IOException
     */
    private HtmlPage executeAllPageTests(String testName) throws IOException {
        return executePageTest(testName, "all", false);
    }

    private BasicSecurityToken createToken(String owner, String viewer) throws BlobCrypterException {
        return new BasicSecurityToken(owner, viewer, "test", "domain", "appUrl", "1", "default", null, null);
    }
}
