package com.atlassian.refapp.sal.pluginsettings;
   
   import com.atlassian.plugin.spring.scanner.annotation.export.ExportAsService;
   import com.atlassian.refapp.sal.FileBackedSettingsFileFactory;
   import com.atlassian.refapp.sal.FileBackedSettingsService;
   import com.atlassian.sal.api.ApplicationProperties;
   import com.atlassian.sal.api.pluginsettings.PluginSettings;
   import com.atlassian.sal.api.pluginsettings.PluginSettingsFactory;
   import org.apache.log4j.Logger;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import java.util.List;
  
  /**
   * This implementation can be backed by a file on the file system.  If a file in the current working directory called
   * "com.atlassian.refapp.sal.pluginsettings.xml" exists (can be overridden with system property sal.com.atlassian.refapp.sal.pluginsettings.store) exists, it loads and
   * persists all plugin settings to and from this file.  If no file exists, plugin settings are purely in memory.
   */
  @ExportAsService
  @Named("pluginSettingsFactory")
  public class RefimplPluginSettingsFactory extends FileBackedSettingsService implements PluginSettingsFactory {
      private static final String CHARLIE_KEYS = "charlie.keys";
  
      private static final Logger log = Logger.getLogger(RefimplPluginSettingsFactory.class);
  
      @Inject
      public RefimplPluginSettingsFactory(ApplicationProperties applicationProperties) {
          super(FileBackedSettingsFileFactory.getFileAndProperties("sal.com.atlassian.refapp.sal.pluginsettings.store", "com.atlassian.refapp.sal.pluginsettings.xml", Boolean.valueOf(System.getProperty("sal.com.atlassian.refapp.sal.pluginsettings.usememorystore", "false")), applicationProperties));
      }
  
      public PluginSettings createSettingsForKey(String key) {
          if (key != null) {
              List<String> charlies = (List<String>) new RefimplPluginSettings(new SettingsMap(null)).get(CHARLIE_KEYS);
              if (charlies == null || !charlies.contains(key)) {
                  throw new IllegalArgumentException("No Charlie with key " + key + " exists.");
              }
          }
          return new RefimplPluginSettings(new SettingsMap(key));
      }
  
      public PluginSettings createGlobalSettings() {
          return createSettingsForKey(null);
      }
  
  }