package com.sixsq.slipstream.module;

/*
 * +=================================================================+
 * SlipStream Server (WAR)
 * =====
 * Copyright (C) 2013 SixSq Sarl (sixsq.com)
 * =====
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * -=================================================================-
 */

import java.util.ArrayList;

import org.restlet.Request;
import org.restlet.data.Cookie;
import org.restlet.data.MediaType;
import org.restlet.data.Status;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.restlet.resource.Get;
import org.restlet.resource.ResourceException;
import org.w3c.dom.Document;

import com.sixsq.slipstream.configuration.Configuration;
import com.sixsq.slipstream.cookie.CookieUtils;
import com.sixsq.slipstream.exceptions.SlipStreamInternalException;
import com.sixsq.slipstream.module.ModuleView.ModuleViewList;
import com.sixsq.slipstream.persistence.Module;
import com.sixsq.slipstream.persistence.User;
import com.sixsq.slipstream.util.RequestUtil;
import com.sixsq.slipstream.util.SerializationUtil;
import com.sixsq.slipstream.util.XmlUtil;

public class ModuleListResource extends ModuleListResourceBase {

	private Configuration configuration = null;

	protected User user = null;

	private String resourceUri = null;

	@Override
	public void doInit() throws ResourceException {

		Request request = getRequest();

		Cookie cookie = CookieUtils.extractAuthnCookie(request);
		String username = CookieUtils.getCookieUsername(cookie);

		user = User.loadByName(username);

		configuration = RequestUtil.getConfigurationFromRequest(request);
		if (configuration == null) {
			throw new SlipStreamInternalException("configuration is null");
		}

		resourceUri = RequestUtil.extractResourceUri(getRequest());

		if (resourceUri == null) {
			throw new ResourceException(Status.CLIENT_ERROR_BAD_REQUEST);
		}
	}

	@Get("xml|txt")
	public Representation toXml() {

		ModuleViewList moduleViewList = retrieveFilteredModuleViewList();

		String result = SerializationUtil.toXmlString(moduleViewList);
		return new StringRepresentation(result);
	}

	@Get("html")
	public Representation toHtml() {

		ModuleViewList moduleViewList = retrieveFilteredModuleViewList();

		Document doc = SerializationUtil.toXmlDocument(moduleViewList);

		XmlUtil.addUser(doc, user);

		String metadata = SerializationUtil.documentToString(doc);

		return new StringRepresentation(
				slipstream.ui.views.Representation.toHtml(metadata, getPageRepresentation(), null),
				MediaType.TEXT_HTML);
	}

	protected String getPageRepresentation() {
		return "project";
	}

	protected ModuleViewList retrieveFilteredModuleViewList() {

		ModuleViewList moduleViewList = new ModuleViewList(
				Module.viewList(resourceUri));

		return filterAuthz(moduleViewList);
	}

	private ModuleViewList filterAuthz(ModuleViewList moduleViewList) {
		ModuleViewList filtered = new ModuleViewList(
				new ArrayList<ModuleView>());
		for (ModuleView view : moduleViewList.getList()) {
			if (view.getAuthz().canGet(user)) {
				filtered.getList().add(view);
			}
		}
		return filtered;
	}

}

@@ -3038,17 +3038,23 @@
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@@ -3070,20 +3070,39 @@
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