/*
      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 uk.nhs.interoperability.client.samples.adt;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Scanner;
  import java.util.UUID;
  
  import uk.nhs.interoperability.infrastructure.ITKAddressImpl;
  import uk.nhs.interoperability.infrastructure.ITKIdentity;
  import uk.nhs.interoperability.infrastructure.ITKIdentityImpl;
  import uk.nhs.interoperability.infrastructure.ITKMessageProperties;
  import uk.nhs.interoperability.infrastructure.ITKMessagePropertiesImpl;
  import uk.nhs.interoperability.infrastructure.ITKMessagingException;
  import uk.nhs.interoperability.payload.ITKMessage;
  import uk.nhs.interoperability.payload.SimpleMessage;
  import uk.nhs.interoperability.source.ITKMessageSender;
  import uk.nhs.interoperability.source.ITKMessageSenderImpl;
  import uk.nhs.interoperability.util.Logger;
  
  /**
   * The Class ADTAsyncSender.
   *
   * @author Michael Odling-Smee
   * @author Nicholas Jones
   * @since 0.1
   */
  public class ADTAsyncSender { 
  	
  	/** The Constant ORGB. */
  	private static final String ORGB = "urn:nhs-uk:addressing:ods:TESTORGS:ORGB";
  
  	/** The Constant ORGID. */
  	private static final String ORGID = "urn:nhs-uk:identity:ods:TESTORGS:ORGA";
  
  	/** The Constant AUDITID. */
  	private static final ITKIdentity AUDITID = new ITKIdentityImpl(ORGID);
  	
  	/** The Constant FROMADDRESS. */
  	private static final String FROMADDRESS = "urn:nhs-uk:addressing:ods:TESTORGS:ORGA";
  
  	/** The Constant TRANSFER_PATIENT_SERVICE. */
  	private static final String TRANSFER_PATIENT_SERVICE = "urn:nhs-itk:services:201005:transferPatient-v1-0";
  	
  	/** The Constant TRANSFER_PATIENT_PROFILEID. */
  	private static final String TRANSFER_PATIENT_PROFILEID = "urn:nhs-en:profile:201005:transferPatient-v1-0";
  
  	/**
  	 * The main method.
  	 *
  	 * @param args the arguments
  	 */
  	public static void main(String[] args) {
  
  		ADTAsyncSender appA = new ADTAsyncSender();
  		appA.sendAsyncMessage();
  	
  	}
  
  	/**
  	 * Send async message.
  	 */
  	private void sendAsyncMessage(){
  		Logger.info("*** ADTAsyncSender: Starting sendAsyncMessage");
  		
  		// Create the message
  		ITKMessage msg = new SimpleMessage();
  
  		// populate the payload
  		try {
  			msg.setBusinessPayload(readFile("ADT_TransferPatient.txt"));
  		} catch (IOException e1) {
  			Logger.error("Error Loading TEST ADT Message",e1);
  			return;
  		}
  		
  		UUID messageUUID = UUID.randomUUID();
  		String messageId = messageUUID.toString();
  		
  		// Build the message properties.
  		ITKMessageProperties mp = new ITKMessagePropertiesImpl();
  		mp.setAuditIdentity(AUDITID);
  		mp.setFromAddress(new ITKAddressImpl(FROMADDRESS));
  		mp.setToAddress(new ITKAddressImpl(ORGB));
  		mp.setServiceId(TRANSFER_PATIENT_SERVICE);
  		mp.setBusinessPayloadId(messageId);
  		mp.setProfileId(TRANSFER_PATIENT_PROFILEID);
 
 		// Add the properties to the message
 		msg.setMessageProperties(mp);
 		
 		// Create the sender
 		ITKMessageSender sender = new ITKMessageSenderImpl();
 
 		try {
 			// Send this message synchronously. The response message will be returned
 			sender.sendAsync(msg);
 			
 		} catch (ITKMessagingException e) {
 			Logger.error("Error Sending ITK Message",e);
 		}
 		
 		Logger.info("*** ADTSyncSender: Ending sendAsyncMessage");
 	}
 
 	/**
 	 * Read file.
 	 *
 	 * @param fname the fname
 	 * @return the string
 	 * @throws IOException Signals that an I/O exception has occurred.
 	 */
 	private String readFile(String fname) throws IOException {
 
 	    InputStream tis = this.getClass().getResourceAsStream("/messages/"+fname);
 	    StringBuilder fileContents = new StringBuilder();
 	    Scanner scanner = new Scanner(tis);
 	    String lineSeparator = System.getProperty("line.separator");
 
 	    try {
 	        while(scanner.hasNextLine()) {        
 	            fileContents.append(scanner.nextLine() + lineSeparator);
 	        }
 	        return fileContents.toString();
 	    } finally {
 	        scanner.close();
 	    }
 	}
 
 }