Copyright Microsoft Corporation
Licensed 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.
/**
 * Copyright Microsoft Corporation
 * 
 * Licensed 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 com.microsoft.azure.storage.core;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;

RESERVED FOR INTERNAL USE. Represents the encryption agent stored on the service. It consists of the encryption
protocol version and encryption algorithm used.
/**
 * RESERVED FOR INTERNAL USE. Represents the encryption agent stored on the service. It consists of the encryption
 * protocol version and encryption algorithm used.
 */
public class EncryptionAgent {

    
The algorithm used for encryption.
/**
     * The algorithm used for encryption.
     */
    public EncryptionAlgorithm encryptionAlgorithm;

    
The protocol version used for encryption.
/**
     * The protocol version used for encryption.
     */
    public String protocol;

    
Initializes a new instance of the EncryptionAgent class. /**
     * Initializes a new instance of the {@link EncryptionAgent} class.
     */
    public EncryptionAgent() {}
    
    
Initializes a new instance of the EncryptionAgent class using the specified protocol version and the algorithm. 
Params:
protocol – 
           The encryption protocol version.
algorithm – 
           The encryption algorithm./**
     * Initializes a new instance of the {@link EncryptionAgent} class using the specified protocol version and the
     * algorithm.
     * 
     * @param protocol
     *            The encryption protocol version.
     * @param algorithm
     *            The encryption algorithm.
     */
    public EncryptionAgent(String protocol, EncryptionAlgorithm algorithm) {
        this.protocol = protocol;
        this.encryptionAlgorithm = algorithm;
    }

    
Gets the algorithm used for encryption.
Returns:
The algorithm used for encryption./**
     * Gets the algorithm used for encryption.
     * 
     * @return The algorithm used for encryption.
     */
    public EncryptionAlgorithm getEncryptionAlgorithm() {
        return encryptionAlgorithm;
    }

    
Gets the protocol version used for encryption.
Returns:
The protocol version used for encryption./**
     * Gets the protocol version used for encryption.
     * 
     * @return The protocol version used for encryption.
     */
    public String getProtocol() {
        return protocol;
    }

    
Sets the algorithm used for encryption.
Params:
encryptionAlgorithm – 
           The algorithm used for encryption./**
     * Sets the algorithm used for encryption.
     * 
     * @param encryptionAlgorithm
     *            The algorithm used for encryption.
     */
    public void setEncryptionAlgorithm(EncryptionAlgorithm encryptionAlgorithm) {
        this.encryptionAlgorithm = encryptionAlgorithm;
    }

    
Sets the protocol version used for encryption.
Params:
protocol – 
           The protocol version used for encryption./**
     * Sets the protocol version used for encryption.
     * 
     * @param protocol
     *            The protocol version used for encryption.
     */
    public void setProtocol(String protocol) {
        this.protocol = protocol;
    }
    
    public void serialize(JsonGenerator generator) throws IOException {
        
        // write protocol
        generator.writeStringField("Protocol", this.getProtocol());
        
        // write encryption algorithm
        generator.writeStringField("EncryptionAlgorithm", this.getEncryptionAlgorithm().toString());
    }
    
    public static EncryptionAgent deserialize(JsonParser parser) throws JsonParseException, IOException {
        JsonUtilities.assertIsStartObjectJsonToken(parser);

        parser.nextToken();
        
        EncryptionAgent agent = new EncryptionAgent();
        while (parser.getCurrentToken() != JsonToken.END_OBJECT) {
            String name = parser.getCurrentName();
            parser.nextToken();
            
            if (name.equals("Protocol")) {
                agent.setProtocol(parser.getValueAsString());
            } 
            else if (name.equals("EncryptionAlgorithm")) {
                agent.setEncryptionAlgorithm(EncryptionAlgorithm.valueOf(parser.getValueAsString()));
            }
            parser.nextToken();
        }
        
        JsonUtilities.assertIsEndObjectJsonToken(parser);
        
        return agent;
    }
}