/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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
 *
 *   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 org.apache.sling.jcr.resource.internal;

import java.util.Iterator;
import java.util.Map;

import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Value;

import org.apache.jackrabbit.JcrConstants;
import org.apache.sling.api.resource.ModifiableValueMap;
import org.apache.sling.jcr.resource.internal.helper.JcrPropertyMapCacheEntry;
import org.jetbrains.annotations.NotNull;

/**
 * Modifiable value map implementation leveraging the base class
 */
public class JcrModifiableValueMap extends JcrValueMap implements ModifiableValueMap {

    /**
     * Constructor
     * @param node The underlying node.
     * @param helper Helper data object
     */
    public JcrModifiableValueMap(final Node node, final HelperData helper) {
        super(node, helper);
    }

    /**
     * @see java.util.Map#put(java.lang.Object, java.lang.Object)
     */
    @Override
    public Object put(final String aKey, final Object value) {
        final String key = checkKey(aKey);
        if (key.indexOf('/') != -1) {
            throw new IllegalArgumentException("Invalid key: " + key);
        }
        if (value == null) {
            throw new NullPointerException("Value should not be null (key = " + key + ")");
        }
        readFully();
        final Object oldValue = this.get(key);
        try {
            final JcrPropertyMapCacheEntry entry = new JcrPropertyMapCacheEntry(value, this.node);
            this.cache.put(key, entry);
            final String name = escapeKeyName(key);
            if (JcrConstants.JCR_MIXINTYPES.equals(name)) {
                NodeUtil.handleMixinTypes(node, entry.convertToType(String[].class, node, this.helper.getDynamicClassLoader()));
            } else if ("jcr:primaryType".equals(name)) {
                node.setPrimaryType(entry.convertToType(String.class, node, this.helper.getDynamicClassLoader()));
            } else if (entry.isArray()) {
                node.setProperty(name, entry.convertToType(Value[].class, node, this.helper.getDynamicClassLoader()));
            } else {
                node.setProperty(name, entry.convertToType(Value.class, node, this.helper.getDynamicClassLoader()));
            }
        } catch (final RepositoryException re) {
            throw new IllegalArgumentException("Value '" + value + "' for property '" + key + "' can't be put into node '" + getPath() + "'.", re);
        }
        this.valueCache.put(key, value);

        return oldValue;
    }

    /**
     * @see java.util.Map#putAll(java.util.Map)
     */
    @Override
    public void putAll(final @NotNull Map<? extends String, ? extends Object> t) {
        if (t != null) {
            final Iterator<?> i = t.entrySet().iterator();
            while (i.hasNext()) {
                @SuppressWarnings("unchecked") final Map.Entry<? extends String, ? extends Object> entry = (Map.Entry<? extends String, ? extends Object>) i.next();
                put(entry.getKey(), entry.getValue());
            }
        }
    }

    /**
     * @see java.util.Map#remove(java.lang.Object)
     */
    @Override
    public Object remove(final Object aKey) {
        final String key = checkKey(aKey.toString());
        readFully();
        this.cache.remove(key);
        final Object oldValue = this.valueCache.remove(key);
        try {
            final String name = escapeKeyName(key);
            if (node.hasProperty(name)) {
                node.getProperty(name).remove();
            }
        } catch (final RepositoryException re) {
            throw new IllegalArgumentException("Property '" + key + "' can't be removed from node '" + getPath() + "'.", re);
        }

        return oldValue;
    }
}