/*
 * 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.brooklyn.location.jclouds.templates.customize;

import java.util.Map;

import org.apache.brooklyn.util.core.config.ConfigBag;
import org.apache.brooklyn.util.text.KeyValueParser;
import org.jclouds.compute.options.TemplateOptions;

import com.google.common.collect.Maps;

class UserMetadataMapOption implements TemplateOptionCustomizer {
    @Override
    public void apply(TemplateOptions t, ConfigBag props, Object v) {
        if (v != null) {
            t.userMetadata(toMapStringString(v));
        }
    }
    private Map<String,String> toMapStringString(Object v) {
        if (v instanceof Map<?,?>) {
            Map<String,String> result = Maps.newLinkedHashMap();
            for (Map.Entry<?,?> entry : ((Map<?,?>)v).entrySet()) {
                String key = entry.getKey().toString();
                String value = entry.getValue().toString();
                result.put(key, value);
            }
            return result;
        } else if (v instanceof CharSequence) {
            return KeyValueParser.parseMap(v.toString());
        } else {
            throw new IllegalArgumentException("Invalid type for Map<String,String>: " + v +
                    (v != null ? " of type "+v.getClass() : ""));
        }
    }
}
