package org.kuali.incubator;
   
   import java.io.File;
   import java.io.IOException;
   import java.util.List;
   import java.util.Properties;
   
   import org.kuali.ole.utility.ConfigUtil;
   import org.kuali.ole.utility.Constants;
  import org.kuali.ole.utility.PropertyUtils;
  import org.kuali.ole.utility.ResourceUtil;
  
  /**
   * 
   */
  public class PropertyUtil {
  	ResourceUtil resourceUtil = new ResourceUtil();
  	ConfigUtil configUtil = new ConfigUtil();
  	private static PropertyUtil propertyUtil = new PropertyUtil();
  	private static final String DEFAULT_PROPERTIES_FILENAME = "env.properties";
  	private static final String DEFAULT_PROPERTIES_LOCATION = "classpath:org/kuali/incubator/" + DEFAULT_PROPERTIES_FILENAME;
  	private static final String SYSTEM_PROPERTY = "ole.solrclient.properties";
  
  	public static PropertyUtil getPropertyUtil() {
  		return propertyUtil;
  	}
  
  	private Properties props;
  
  	private PropertyUtil() {
  		try {
  			String externalConfigFile = getExternalConfigFile();
  			List<String> locations = PropertyUtils.getLocations(DEFAULT_PROPERTIES_LOCATION, SYSTEM_PROPERTY, externalConfigFile);
  			props = PropertyUtils.getAppEnvironmentProperties(locations);
  		} catch (IOException e) {
  			throw new IllegalStateException("Exception loading properties", e);
  		}
  	}
  
  	public String getProperty(String key) {
  		return props.getProperty(key);
  	}
  
  	public Properties getProperties() {
  		Properties p = new Properties();
  		p.putAll(props);
  		return p;
  	}
  
  	public String getExternalConfigFile() {
  		StringBuilder sb = new StringBuilder();
  		sb.append(configUtil.getApplicationHome(Constants.KUALI_GROUP, Constants.OLE_SOLAR_CLIENT));
  		sb.append(File.separator + "properties" + File.separator);
  		sb.append(DEFAULT_PROPERTIES_FILENAME);
  		return sb.toString();
  	}
  }