/**
 * 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.url;

import com.google.common.base.Preconditions;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.portlet.PortletMode;
import javax.portlet.ResourceURL;
import javax.portlet.WindowState;
import org.apereo.portal.portlet.om.IPortletWindowId;

/**
 */
class PortletRequestInfoImpl implements IPortletRequestInfo {
    private final Object readOnlySync = new Object();

    private final IPortletWindowId targetWindowId;
    private final IPortalRequestInfo portalRequestInfo;

    private volatile boolean readOnly = false;
    private Map<String, List<String>> portletParameters = new LinkedHashMap<String, List<String>>();
    private WindowState windowState;
    private PortletMode portletMode;
    private IPortletWindowId delegateParentWindowId;
    private String resourceId;
    private String cacheability = ResourceURL.PAGE;

    public PortletRequestInfoImpl(
            IPortletWindowId targetWindowId, IPortalRequestInfo portalRequestInfo) {
        this.targetWindowId = targetWindowId;
        this.portalRequestInfo = portalRequestInfo;
    }

    public void makeReadOnly() {
        synchronized (readOnlySync) {
            if (readOnly) {
                return;
            }

            this.portletParameters = ParameterMap.immutableCopyOfListMap(this.portletParameters);

            readOnly = true;
        }
    }

    private void checkReadOnly() {
        if (readOnly) {
            throw new UnsupportedOperationException(
                    "makeReadOnly has been called, this object is in read-only mode");
        }
    }

    @Override
    public Map<String, List<String>> getPortletParameters() {
        return this.portletParameters;
    }

    @Override
    public IPortletWindowId getDelegateParentWindowId() {
        return delegateParentWindowId;
    }

    public void setDelegateParentWindowId(IPortletWindowId delegateParentWindowId) {
        this.checkReadOnly();
        this.delegateParentWindowId = delegateParentWindowId;
    }

    @Override
    public WindowState getWindowState() {
        return this.windowState;
    }

    public void setWindowState(WindowState windowState) {
        this.checkReadOnly();
        this.windowState = windowState;
    }

    @Override
    public PortletMode getPortletMode() {
        return this.portletMode;
    }

    public void setPortletMode(PortletMode portletMode) {
        this.checkReadOnly();
        this.portletMode = portletMode;
    }

    @Override
    public String getResourceId() {
        final UrlType urlType = this.portalRequestInfo.getUrlType();
        Preconditions.checkArgument(
                urlType == UrlType.RESOURCE,
                "UrlType must be %s but was %s",
                UrlType.RESOURCE,
                urlType);
        return resourceId;
    }

    public void setResourceId(String resourceId) {
        this.checkReadOnly();
        this.resourceId = resourceId;
    }

    @Override
    public String getCacheability() {
        final UrlType urlType = this.portalRequestInfo.getUrlType();
        Preconditions.checkArgument(
                urlType == UrlType.RESOURCE,
                "UrlType must be %s but was %s",
                UrlType.RESOURCE,
                urlType);
        return cacheability;
    }

    public void setCacheability(String cacheability) {
        this.checkReadOnly();
        this.cacheability = cacheability;
    }

    @Override
    public IPortletWindowId getPortletWindowId() {
        return this.targetWindowId;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result =
                prime * result
                        + ((this.targetWindowId == null) ? 0 : this.targetWindowId.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;
        if (getClass() != obj.getClass()) return false;
        PortletRequestInfoImpl other = (PortletRequestInfoImpl) obj;
        if (this.targetWindowId == null) {
            if (other.targetWindowId != null) return false;
        } else if (!this.targetWindowId.equals(other.targetWindowId)) return false;
        return true;
    }

    @Override
    public String toString() {
        return "PortletRequestInfoImpl [targetWindowId="
                + this.targetWindowId
                + ", portletParameters="
                + this.portletParameters
                + ", windowState="
                + this.windowState
                + ", portletMode="
                + this.portletMode
                + ", resourceId="
                + this.resourceId
                + ", cacheability="
                + this.cacheability
                + "]";
    }
}