/*
 * 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 test.plugin;

import org.crsh.command.BaseCommand;
import org.crsh.plugin.*;
import org.crsh.shell.Shell;
import org.crsh.shell.impl.command.CRaSH;
import org.crsh.vfs.FS;
import org.crsh.vfs.Path;
import org.crsh.vfs.spi.ram.RAMDriver;

import java.util.HashMap;

public class TestPluginLifeCycle extends PluginLifeCycle {

  /** . */
  private final PluginContext context;

  /** . */
  private CRaSH crash;

  /** . */
  private HashMap<String, Object> attributes;

  /** . */
  private final RAMDriver commands;

  public TestPluginLifeCycle() throws Exception {
    this(Thread.currentThread().getContextClassLoader());
  }

  public TestPluginLifeCycle(ClassLoader classLoader) throws Exception {
    this(new ServiceLoaderDiscovery(classLoader), classLoader);
  }

  public TestPluginLifeCycle(CRaSHPlugin... plugins) throws Exception {
    this(new SimplePluginDiscovery(plugins), Thread.currentThread().getContextClassLoader());
  }

  private TestPluginLifeCycle(PluginDiscovery discovery, ClassLoader classLoader) throws Exception {
    this.attributes = new HashMap<String, Object>();
    this.commands = new RAMDriver();
    this.context = new PluginContext(
      discovery,
      attributes,
      new FS().mount(classLoader,Path.get("/crash/commands/")).mount(commands),
      new FS().mount(classLoader,Path.get("/crash/")),
      classLoader);
    this.crash = new CRaSH(context);
  }

  public void bindScript(String name, String command) {
    bind(name, "script", command);
  }

  public void bindGroovy(String name, String command) {
    bind(name, "groovy", command);
  }

  public void bindGroovyClass(String name, Class<? extends BaseCommand> command) {
    bindGroovy(name, "public class " + name + " extends " + command.getCanonicalName() + " {}");
  }

  public void bindJava(String name, String command) {
    bind(name, "java", command);
  }

  public void bindClass(String name, Class<? extends BaseCommand> command) {
    bindJava(name, "public class " + name + " extends " + command.getCanonicalName() + " {}");
  }

  public void bind(String name, String ext, String command) {
    if (name.contains("/")) {
      throw new IllegalArgumentException("Command name must not contain /");
    }
    if (name.contains(".")) {
      throw new IllegalArgumentException("Command name must not contain .");
    }
    commands.add(Path.get("/" + name + "." + ext), command);
    context.refresh();
  }

  public Object getAttribute(String name) {
    return attributes.get(name);
  }

  public void setAttribute(String name, Object value) {
    if (value != null) {
      attributes.put(name, value);
    } else {
      attributes.remove(name);
    }
  }

  public <T> void setProperty(PropertyDescriptor<T> desc, T value) throws NullPointerException {
    context.setProperty(desc, value);
  }

  public void start() {
    context.refresh();
    start(context);
  }

  public Shell createShell() {
    return crash.createSession(null);
  }
}