/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you 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 the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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 org.apereo.portal.portlet.delegation.jsp;

import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.portlet.PortletMode;
import javax.portlet.WindowState;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import org.apereo.portal.portlet.PortletUtils;

/**
 * Simple wrapper tag for setting up the basis of URLs for portlet delegation
 *
 */
public class ParentUrlTag extends TagSupport implements ParameterizableTag {
    private static final long serialVersionUID = 1L;

    private String windowState = null;
    private String portletMode = null;
    private Map<String, List<String>> parameters;

    public String getPortletMode() {
        return portletMode;
    }
    /** @param portletMode The portletMode to set */
    public void setPortletMode(String portletMode) {
        this.portletMode = portletMode;
    }

    public String getWindowState() {
        return windowState;
    }
    /** @param windowState The windowState to set */
    public void setWindowState(String windowState) {
        this.windowState = windowState;
    }

    @Override
    public int doStartTag() throws JspException {
        this.parameters = new LinkedHashMap<String, List<String>>();

        return EVAL_BODY_INCLUDE;
    }

    @Override
    public int doEndTag() throws JspException {
        final RenderPortletTag renderPortletTag =
                (RenderPortletTag) findAncestorWithClass(this, RenderPortletTag.class);

        if (this.windowState != null) {
            final WindowState state = PortletUtils.getWindowState(this.windowState);
            renderPortletTag.setParentUrlState(state);
        }

        if (this.portletMode != null) {
            final PortletMode mode = PortletUtils.getPortletMode(this.portletMode);
            renderPortletTag.setParentUrlMode(mode);
        }

        renderPortletTag.setParentUrlParameters(this.parameters);

        return EVAL_PAGE;
    }

    @Override
    public void addParameter(String name, String value) {
        List<String> values = this.parameters.get(name);
        if (values == null) {
            values = new LinkedList<String>();
            this.parameters.put(name, values);
        }
        values.add(value);
    }
}