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package org.netbeans.html.ko.felix.test;

import org.netbeans.html.ko.felix.test.KnockoutFelixTCKImpl;

import java.io.Closeable;

import java.io.File;

import java.io.IOException;

import java.lang.annotation.Annotation;

import java.lang.reflect.Method;

import java.net.URI;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.ServiceLoader;

import java.util.concurrent.Callable;

import java.util.jar.JarFile;

import java.util.logging.Level;

import java.util.logging.Logger;

import org.netbeans.html.boot.spi.Fn;

import org.netbeans.html.json.tck.KOTest;

import org.netbeans.html.json.tck.KnockoutTCK;

import org.osgi.framework.Bundle;

import org.osgi.framework.BundleException;

import org.osgi.framework.Constants;

import org.osgi.framework.launch.Framework;

import org.osgi.framework.launch.FrameworkFactory;

import static org.testng.Assert.assertNotNull;

import static org.testng.Assert.fail;

import org.testng.annotations.AfterClass;

import org.testng.annotations.Factory;

/**

 *

 * @author Jaroslav Tulach

 */

public class KnockoutFelixIT {

    private static final Logger LOG = Logger.getLogger(KnockoutFelixIT.class.getName());

    private static Framework framework;

    private static File dir;

    static Framework framework() throws Exception {

        if (framework != null) {

            return framework;

        }

        for (FrameworkFactory ff : ServiceLoader.load(FrameworkFactory.class)) {

            String basedir = System.getProperty("basedir");

            assertNotNull("basedir preperty provided", basedir);

            File target = new File(basedir, "target");

            dir = new File(target, "osgi");

            dir.mkdirs();

            Map<String,String> config = new HashMap<String, String>();

            config.put(Constants.FRAMEWORK_STORAGE, dir.getPath());

            config.put(Constants.FRAMEWORK_STORAGE_CLEAN, "true");

            config.put(Constants.FRAMEWORK_SYSTEMPACKAGES_EXTRA, "sun.misc,"

                + "javafx.application,"

                + "javafx.beans,"

                + "javafx.beans.property,"

                + "javafx.beans.value,"

                + "javafx.collections,"

                + "javafx.concurrent,"

                + "javafx.event,"

                + "javafx.geometry,"

                + "javafx.scene,"

                + "javafx.scene.control,"

                + "javafx.scene.image,"

                + "javafx.scene.layout,"

                + "javafx.scene.text,"

                + "javafx.scene.web,"

                + "javafx.stage,"

                + "javafx.util,"

                + "netscape.javascript"

            );

            framework = ff.newFramework(config);

            framework.init();

            loadClassPathBundles(framework);

            framework.start();

            for (Bundle b : framework.getBundleContext().getBundles()) {

                try {

                    if (b.getSymbolicName().contains("felix.framework")) {

                        continue;

                    }

                    if (b.getSymbolicName().contains("grizzly.websockets-server")) {

                        continue;

                    }

                    b.start();

                    LOG.log(Level.INFO, "Started {0}", b.getSymbolicName());

                } catch (BundleException ex) {

                    LOG.log(Level.WARNING, "Cannot start bundle " + b.getSymbolicName(), ex);

                }

            }

            return framework;

        }

        fail("No OSGi framework in the path");

        return null;

    }

    @AfterClass public static void cleanUp() throws Exception {

        if (framework != null) framework.stop();

        clearUpDir(dir);

    }

    private static void clearUpDir(File dir) {

        if (dir.isDirectory()) {

            for (File f : dir.listFiles()) {

                clearUpDir(f);

            }

        }

        dir.delete();

    }

    private static void loadClassPathBundles(Framework f) throws IOException, BundleException {

        for (String jar : System.getProperty("java.class.path").split(File.pathSeparator)) {

            File file = new File(jar);

            if (!file.isFile()) {

                LOG.info("Not loading " + file);

                continue;

            }

            JarFile jf = new JarFile(file);

            final String name = jf.getManifest().getMainAttributes().getValue("Bundle-SymbolicName");

            jf.close();

            if (name != null) {

                if (name.contains("org.eclipse.osgi")) {

                    throw new IllegalStateException("Found " + name + " !");

                }

                if (name.contains("felix.framework")) {

                    continue;

                }

                if (name.contains("testng")) {

                    continue;

                }

                final String path = "reference:" + file.toURI().toString();

                try {

                    Bundle b = f.getBundleContext().installBundle(path);

                } catch (BundleException ex) {

                    LOG.log(Level.WARNING, "Cannot install " + file, ex);

                }

            }

        }

    }

    private static Class<?> loadOSGiClass(Class<?> c) throws Exception {

        return KnockoutFelixTCKImpl.loadOSGiClass(c.getName(), KnockoutFelixIT.framework().getBundleContext());

    }

    private static Class<?> browserClass;

    private static Object browserContext;

    @Factory public static Object[] compatibilityTests() throws Exception {

        Class<?> tck = loadOSGiClass(KnockoutTCK.class);

        Class<?> peer = loadOSGiClass(KnockoutFelixTCKImpl.class);

        // initialize the TCK

        Callable<Class[]> inst = (Callable<Class[]>) peer.newInstance();

        Class[] arr = inst.call();

        for (int i = 0; i < arr.length; i++) {

            if (arr[i].getClassLoader() == ClassLoader.getSystemClassLoader()) {

                fail("Should be an OSGi class: " + arr[i]);

            }

        }

        URI uri = DynamicHTTP.initServer();

        Method start = peer.getMethod("start", URI.class);

        start.invoke(null, uri);

        ClassLoader l = getClassLoader();

        List<Object> res = new ArrayList<Object>();

        for (int i = 0; i < arr.length; i++) {

            seekKOTests(arr[i], res);

        }

        return res.toArray();

    }

    private static void seekKOTests(Class<?> c, List<Object> res) throws SecurityException, ClassNotFoundException {

        Class<? extends Annotation> koTest =

            c.getClassLoader().loadClass(KOTest.class.getName()).

            asSubclass(Annotation.class);

        for (Method m : c.getMethods()) {

            if (m.getAnnotation(koTest) != null) {

                res.add(new KOFx(browserContext, m));

            }

        }

    }

    static synchronized ClassLoader getClassLoader() throws InterruptedException {

        while (browserClass == null) {

            KnockoutFelixIT.class.wait();

        }

        return browserClass.getClassLoader();

    }

    public static synchronized void initialized(Class<?> browserCls, Object presenter) throws Exception {

        browserClass = browserCls;

        browserContext = presenter;

        KnockoutFelixIT.class.notifyAll();

    }

    static Closeable activateInOSGi(Object presenter) throws Exception {

        Class<?> presenterClass = loadOSGiClass(Fn.Presenter.class);

        Class<?> fnClass = loadOSGiClass(Fn.class);

        Method m = fnClass.getMethod("activate", presenterClass);

        return (Closeable) m.invoke(null, presenter);

    }

}