package de.mpiwg.gazetteer.utils;


import java.io.IOException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.util.logging.Logger;

import javax.ejb.EJB;
import javax.faces.context.FacesContext;
import javax.inject.Named;

import org.apache.commons.lang.StringUtils;
import org.primefaces.json.JSONException;
import org.primefaces.json.JSONObject;

import de.mpiwg.gazetteer.utils.HTTPUtils.HttpStringResponse;
import edu.harvard.iq.dataverse.DatasetServiceBean;
import edu.harvard.iq.dataverse.FileMetadata;

@Named("LGDatasetPage")
public class LGDatasetPage{

    private static final Logger logger = Logger.getLogger(LGDatasetPage.class.getCanonicalName());
    
    @EJB
    DatasetServiceBean datasetService;
    
    
    // synchronize dataset to LGServices
    public String syncDatasetToLGServices(String datasetId, String persistentId) {
    	logger.info("syncDatasetToLGServices. datasetId: " + datasetId);
        
    	// notify LGServices the deleted file
        // this is not efficient
    	// sync the dataset at once, need to go through all files in the dataset
 
		HttpStringResponse response = null;
		try {
	    	//String LGServicesPath = "http://localhost:8080/LGServices";
	    	String LGServicesPath = PropertiesUtils.getPropValue("LGServices");	// get property in config.properties file
	    	
			String query = LGServicesPath + "/updateFileStatus?datasetId="+datasetId+"&datasetPersistentId="+persistentId;		// get all dataverse alias from LGDataverse
			
			response = HTTPUtils.getStringResponse(query);
			JSONObject data = new JSONObject(response.content);
			String status = data.getString("status");
			//logger.info("status: " + status);
			if (!StringUtils.equals(status, "OK")) {
				logger.warning("error when updateFileStatus in LGServices.");
			}
			
		} catch (KeyManagementException | NoSuchAlgorithmException
				| IOException | JSONException e) {
			
			e.printStackTrace();
		}
		
    	return "";
    }
    
    
    // out link to LGMap
    public String viewLGMapOutputLink(FileMetadata fm) {
    	System.out.println("viewLGMapOutputLink");
  
    	Long fileId = fm.getDataFile().getId();
    
    	try {
        	// get LGMap url from the config.properties file
        	String LGMapPath = PropertiesUtils.getPropValue("LGMap");	// get property in config.properties file
    		String retVal = LGMapPath + "/map.php?mode=1&name="+URLEncoder.encode(fm.getLabel(), "UTF-8")+"&fileId="+fileId;
        	//logger.info("open LGMap at " + retVal);
        	
        	FacesContext.getCurrentInstance().getExternalContext().redirect(retVal);
        } catch (IOException ex) {
            logger.warning("Failed to issue a redirect to file download url.");
        }
               
    	return "";
    }
 
    
}