/*
 * Copyright 1999-2012 Alibaba Group.
 *  
 * 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.
 */

package com.alibaba.cobar.manager.web.screen;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.beanutils.PropertyUtilsBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import com.alibaba.cobar.manager.dataobject.xml.ClusterDO;
import com.alibaba.cobar.manager.dataobject.xml.CobarDO;
import com.alibaba.cobar.manager.dataobject.xml.UserDO;
import com.alibaba.cobar.manager.service.CobarAccesser;
import com.alibaba.cobar.manager.service.XmlAccesser;
import com.alibaba.cobar.manager.util.CobarStringUtil;
import com.alibaba.cobar.manager.util.FluenceHashMap;

/**
 * @author haiqing.zhuhq 2011-9-1
 */
public class CobarDetailScreen extends AbstractController implements InitializingBean {
    private XmlAccesser xmlAccesser;
    private CobarAccesser cobarAccesser;

    public void setXmlAccesser(XmlAccesser xmlAccesser) {
        this.xmlAccesser = xmlAccesser;
    }

    public void setCobarAccesser(CobarAccesser cobarAccesser) {
        this.cobarAccesser = cobarAccesser;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        if (null == xmlAccesser) {
            throw new IllegalArgumentException("property 'xmlAccesser' is null!");
        }
        if (null == cobarAccesser) {
            throw new IllegalArgumentException("property 'cobarAccesser' is null!");
        }
    }

    @SuppressWarnings("unchecked")
    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
        UserDO user = (UserDO) request.getSession().getAttribute("user");
        long nodeId = 0;
        try {
            nodeId = Long.parseLong(request.getParameter("nodeId").trim());
        } catch (Exception e) {
            throw new IllegalArgumentException("parameter 'nodeId' is invalid: " + request.getParameter("nodeId"));
        }
        CobarDO cobar = xmlAccesser.getCobarDAO().getCobarById(nodeId);
        if (null == cobar) {
            throw new IllegalArgumentException("no cobar exsit for id : " + nodeId);
        }

        PropertyUtilsBean util = new PropertyUtilsBean();
        Map<String, Object> cobarMap = null;
        try {
            cobarMap = util.describe(cobar);
        } catch (Exception e1) {
            throw new RuntimeException(e1);
        }

        cobarMap.remove("class");
        cobarMap.remove("name");
        cobarMap.put("name", CobarStringUtil.htmlEscapedString(cobar.getName()));

        ClusterDO cluster = xmlAccesser.getClusterDAO().getClusterById(cobar.getClusterId());
        Map<String, Object> clusterMap = new HashMap<String, Object>();
        clusterMap.put("id", cluster.getId());
        clusterMap.put("name", CobarStringUtil.htmlEscapedString(cluster.getName()));

        return new ModelAndView(
                "v_cobarDetail",
                new FluenceHashMap<String, Object>().putKeyValue("user", user)
                                                    .putKeyValue("cluster", clusterMap)
                                                    .putKeyValue("cobarNode", cobarMap));
    }
}