/*
 * Copyright 2009 IHE International (http://www.ihe.net)
 *
 * 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 net.ihe.swfid.action;

import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.ejb.Remove;
import javax.ejb.Stateful;

import net.ihe.gazelle.simulator.common.model.ApplicationConfiguration;
import net.ihe.swfid.tools.DcmQRSimulator;
import net.ihe.swfid.tools.TestConnection;

import org.dcm4che2.data.DicomObject;
import org.dcm4che2.data.Tag;
import org.dcm4che2.net.ConfigurationException;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.faces.FacesMessages;
import org.jboss.seam.log.Log;
/**
 * @author Abderrazek Boufahja > INRIA Rennes IHE development Project
 *
 */
@Stateful
@Name("searchManager")
@Scope(ScopeType.SESSION)
public class SearchManager implements SearchManagerLocal, Serializable{

	/**
	 * 
	 */
	private static final long serialVersionUID = -8734567233751607120L;
	
	//~ Statics variables and Class initializer ////////////////////////////////////////

	/** Logger */
	@Logger
	private static Log log;

	//~ Attribute ///////////////////////////////////////////////////////////////////////
	
	private List<String> listTag;
	
	private String selectedCriteria;
	
	private String selectedQueryValue;
	
	private String selectedHost;
	
	private Integer selectedPort;
	
	private String selectedAET;
	
	private String searchResults;
	
	
	//~ getters and setters /////////////////////////////////////////////////////////////
	
	public void setSearchResults(String searchResults) {
		this.searchResults = searchResults;
	}

	public String getSearchResults() {
		return searchResults;
	}

	public String getSelectedQueryValue() {
		return selectedQueryValue;
	}

	public void setSelectedQueryValue(String selectedQueryValue) {
		this.selectedQueryValue = selectedQueryValue;
	}

	public String getSelectedHost() {
		if(selectedHost==null)
			selectedHost = ApplicationConfiguration.getValueOfVariable("SWFID-HOST");
		return selectedHost;
	}

	public void setSelectedHost(String selectedHost) {
		this.selectedHost = selectedHost;
	}

	public Integer getSelectedPort() {
		if(selectedPort==null)
			selectedPort = Integer.valueOf(ApplicationConfiguration.getValueOfVariable("SWFID-PORT"));
		return selectedPort;
	}

	public void setSelectedPort(Integer selectedPort) {
		this.selectedPort = selectedPort;
	}

	public String getSelectedAET() {
		if(selectedAET==null)
			selectedAET = ApplicationConfiguration.getValueOfVariable("SWFID-AET");
		return selectedAET;
	}

	public void setSelectedAET(String selectedAET) {
		this.selectedAET = selectedAET;
	}

	public void setSelectedCriteria(String selectedCriteria) {
		this.selectedCriteria = selectedCriteria;
	}

	public String getSelectedCriteria() {
		return selectedCriteria;
	}

	public void setListTag(List<String> listTag) {
		this.listTag = listTag;
	}

	public List<String> getListTag() {
		if (listTag == null){
			listTag = new ArrayList<String>();
			Field[] lf = Tag.class.getFields();
			for (Field f: lf){
				listTag.add(f.getName());
			}
		}
		Collections.sort(listTag);
		return listTag;
	}

	public static void setLog(Log log) {
		SearchManager.log = log;
	}

	public static Log getLog() {
		return log;
	}

	// methods /////////////////////////////////////////////////////////////////////////
	
	public void initializeCriterias(){
		this.searchResults = new String();
	}
	
	public void searchPatients() throws IOException, ConfigurationException, InterruptedException{
		if (
				(this.selectedCriteria == null) ||
				(this.selectedHost == null) ||
				(this.selectedPort == null) ||
				(this.selectedQueryValue == null) ||
				(this.selectedAET== null)
			){
			FacesMessages.instance().add("One criteria of research was not specified.");
			return;
		}
		if (
				(this.selectedCriteria.equals("")) ||
				(this.selectedHost.equals("")) ||
				(this.selectedQueryValue.equals("")) ||
				(this.selectedAET.equals(""))
			){
			FacesMessages.instance().add("One criteria of research was not specified.");
			return;
		}
		this.searchResults = new String();
		DcmQRSimulator dqrs = new DcmQRSimulator();
		List<DicomObject> ldo = dqrs.getListDicomObjectFromTag(this.selectedHost, this.selectedPort.intValue(), this.selectedAET, this.selectedCriteria, this.selectedQueryValue);
		this.searchResults = this.searchResults + "## Number of Patients : " + ldo.size() + "\n\n";
		for (DicomObject dobj:ldo){
			this.searchResults = this.searchResults + dobj.toString() + "\n\n";
		}
	}
	
	
	
	public void testConnexion()  {
	    boolean res = TestConnection.testConnection(selectedAET, selectedHost, String.valueOf(selectedPort));
	    if (res){
	        FacesMessages.instance().add("Echo DICOM : successful !");
	    }
	    else{
	        FacesMessages.instance().add("Echo DICOM : Connection refused.");
	    }
	}
	// destroy method ///////////////////////////////////////////////////////////////////
	
	@Destroy
	@Remove
	public void destroy()
	{
		log.info("destroy");
	}
	

}