package org.argeo.connect.e4;
   
   import java.util.Collections;
   import java.util.Map;
   import java.util.SortedMap;
   import java.util.TreeMap;
   
   import org.argeo.connect.ServiceRanking;
   import org.argeo.connect.ui.AppWorkbenchService;
  import org.argeo.connect.ui.SystemWorkbenchService;
  import org.eclipse.e4.core.contexts.ContextFunction;
  import org.eclipse.e4.core.contexts.IEclipseContext;
  
  public class SystemE4ServiceFunction extends ContextFunction {
  	// Injected known AppWorkbenchServices: order is important, first found
  	// result will be returned by the various methods.
  	private SortedMap<ServiceRanking, AppWorkbenchService> knownAppWbServices = Collections
  			.synchronizedSortedMap(new TreeMap<>());
  
  	@Override
  	public Object compute(IEclipseContext context, String contextKey) {
  //		MApplication app = context.get(MApplication.class);
  //		IEclipseContext appContext = app.getContext();
  //		EPartService partService = appContext.get(EPartService.class);
  //		ECommandService commandService = appContext.get(ECommandService.class);
  //		EHandlerService handlerService = appContext.get(EHandlerService.class);
  
  		SystemE4Service systemE4Service = new SystemE4Service(knownAppWbServices, context);
  
  		// if (app == null) {// during login
  		// context.set(SystemWorkbenchService.class, systemE4Service);
  		// } else {// regular use case
  		// IEclipseContext appCtx = app.getContext();
  		// if (appCtx != null)
  		// appCtx.set(SystemWorkbenchService.class, systemE4Service);
  		// else
  		// context.set(SystemWorkbenchService.class, systemE4Service);
  		// }
  		context.set(SystemWorkbenchService.class, systemE4Service);
  		return systemE4Service;
  	}
  
  	public void addAppService(AppWorkbenchService appService, Map<String, Object> properties) {
  		// String serviceRankingStr = properties.get(Constants.SERVICE_RANKING);
  		// int serviceRanking = serviceRankingStr == null ? 0 :
  		// Integer.parseInt(serviceRankingStr);
  		// Integer serviceRanking = (Integer) properties.get(Constants.SERVICE_RANKING);
  		// System.out.println(serviceRanking + " | " + properties);
  		knownAppWbServices.put(new ServiceRanking(properties), appService);
  	}
  
  	public void removeAppService(AppWorkbenchService appService, Map<String, Object> properties) {
  		knownAppWbServices.remove(new ServiceRanking(properties));
  	}
  
  }