/**
 * Copyright (C) 2009 STMicroelectronics
 *
 * This file is part of "Mind Compiler" 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 3 of the 
 * License, or (at your option) any later version.
 *
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Contact: mind@ow2.org
 *
 * Authors: Matthieu Leclercq
 * Contributors: 
 */

package org.ow2.mind.adl.annotations;

import static org.ow2.mind.adl.membrane.DefaultControllerInterfaceConstants.BINDING_CONTROLLER;
import static org.ow2.mind.adl.membrane.DefaultControllerInterfaceConstants.BINDING_CONTROLLER_SIGNATURE;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertNull;
import static org.testng.Assert.assertSame;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;

import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.Map;

import org.objectweb.fractal.adl.Definition;
import org.objectweb.fractal.adl.Loader;
import org.ow2.mind.CommonFrontendModule;
import org.ow2.mind.DepsHelper;
import org.ow2.mind.adl.ADLFrontendModule;
import org.ow2.mind.adl.ASTChecker;
import org.ow2.mind.adl.ErrorLoader;
import org.ow2.mind.adl.annotations.controller.BindingController;
import org.ow2.mind.adl.ast.ASTHelper;
import org.ow2.mind.adl.membrane.ControllerInterfaceDecorationHelper;
import org.ow2.mind.adl.membrane.ast.Controller;
import org.ow2.mind.adl.membrane.ast.ControllerContainer;
import org.ow2.mind.adl.membrane.ast.ControllerInterface;
import org.ow2.mind.annotation.AnnotationHelper;
import org.ow2.mind.idl.IDLFrontendModule;
import org.ow2.mind.plugin.PluginLoaderModule;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.name.Names;

public class TestBindingController {

  private Loader              loader;
  private ASTChecker          astChecker;
  private Map<Object, Object> context;

  @BeforeMethod(alwaysRun = true)
  public void setUp() throws Exception {
    final Injector injector = Guice.createInjector(new CommonFrontendModule(),
        new PluginLoaderModule(), new IDLFrontendModule(),
        new ADLFrontendModule() {
          protected void configureErrorLoader() {
            bind(Loader.class).annotatedWith(Names.named("ErrorLoader"))
                .toChainStartingWith(ErrorLoader.class)
                .endingWith(Loader.class);
          }
        });

    loader = injector.getInstance(Key.get(Loader.class,
        Names.named("ErrorLoader")));

    context = new HashMap<Object, Object>();

    astChecker = new ASTChecker();

    // We need resources from the adl-frontend module, resolve pkg1.I2 base
    // host folder and add it to the source-path
    final String depsPath = getDepsDir("pkg1/I2.itf").getAbsolutePath();
    final URL[] depsURL = {new File(depsPath).toURI().toURL()};
    final ClassLoader srcLoader = new URLClassLoader(depsURL, this.getClass()
        .getClassLoader());

    context.put("classloader", srcLoader);
  }

  @Test(groups = {"functional"})
  public void test1() throws Exception {
    final Definition d = loader.load("pkg1.controller.binding.Type1", context);
    checkBC(d);
  }

  @Test(groups = {"functional"})
  public void test11() throws Exception {
    final Definition d = loader.load("pkg1.controller.binding.Primitive1",
        context);
    checkBC(d);
  }

  @Test(groups = {"functional"})
  public void test2() throws Exception {
    final Definition d = loader.load("pkg1.controller.binding.Type2", context);
    checkBC(d);
  }

  @Test(groups = {"functional"})
  public void test21() throws Exception {
    final Definition d = loader.load("pkg1.controller.binding.Primitive2",
        context);
    checkBC(d);
  }

  private void checkBC(final Definition d) {
    assertNotNull(AnnotationHelper.getAnnotation(d, BindingController.class));

    astChecker.assertDefinition(d).containsInterface(BINDING_CONTROLLER)
        .isServer().isMandatory().hasSignature(BINDING_CONTROLLER_SIGNATURE);

    assertTrue(d instanceof ControllerContainer);
    final Controller[] ctrls = ((ControllerContainer) d).getControllers();
    assertEquals(ctrls.length, 1);
    final Controller ctrl = ctrls[0];
    assertNotNull(ctrl);
    final ControllerInterface[] ctrlItfs = ctrl.getControllerInterfaces();
    assertEquals(ctrlItfs.length, 1);
    final ControllerInterface ctrlItf = ctrlItfs[0];
    assertNotNull(ctrlItf);
    assertEquals(ctrlItf.getName(), BINDING_CONTROLLER);
    assertNull(ctrlItf.getIsInternal());
    assertSame(
        ControllerInterfaceDecorationHelper.getReferencedInterface(ctrlItf),
        ASTHelper.getInterface(d, BINDING_CONTROLLER));
  }

  protected File getDepsDir(final String resource) {
    try {
      return DepsHelper.unpackDeps(resource, this.getClass().getClassLoader());
    } catch (final Exception e) {
      fail("Can't unpack dependency containing " + resource, e);
      return null;
    }
  }

}