/**
 * 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.web.skin;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jasig.resourceserver.aggr.om.Included;
import org.jasig.resourceserver.utils.aggr.ResourcesElementsProvider;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * Class to facilitate enabling/disabling Resources aggregation.
 */
@Service
public class ResourcesAggregationHelper {
    /** Name of {@link System} property used to toggle default/aggregated skin output. */
    public static final String AGGREGATED_THEME_PARAMETER =
            "org.apereo.portal.web.skin.aggregated_theme";

    public static final String DEFAULT_AGGREGATION_ENABLED = Boolean.TRUE.toString();

    protected final Log logger = LogFactory.getLog(this.getClass());

    private ResourcesElementsProvider resourcesElementsProvider;

    @Autowired
    public void setResourcesElementsProvider(ResourcesElementsProvider resourcesElementsProvider) {
        this.resourcesElementsProvider = resourcesElementsProvider;
    }

    /** @return true if aggregation is currently enabled. */
    public boolean isAggregationEnabled() {
        return Included.AGGREGATED == this.resourcesElementsProvider.getIncludedType(null);
    }

    /** Toggle resources aggregation (if and only if value parameter differs from current value). */
    public void setAggregationEnabled(boolean enabled) {
        if (enabled) {
            this.resourcesElementsProvider.setDefaultIncludedType(Included.AGGREGATED);
        } else {
            this.resourcesElementsProvider.setDefaultIncludedType(Included.PLAIN);
        }
    }

    /** shortcut to {@link #setAggregationEnabled(boolean)} with true. */
    public void enableAggregation() {
        setAggregationEnabled(true);
    }

    /** shortcut to {@link #setAggregationEnabled(boolean)} with false. */
    public void disableAggregation() {
        setAggregationEnabled(false);
    }
}