/*
    * Copyright (C) 2013 4th Line GmbH, Switzerland
    *
    * The contents of this file are subject to the terms of either the GNU
    * Lesser General Public License Version 2 or later ("LGPL") or the
    * Common Development and Distribution License Version 1 or later
    * ("CDDL") (collectively, the "License"). You may not use this file
    * except in compliance with the License. See LICENSE.txt for more
    * information.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   */
  
  package org.fourthline.cling.model.meta;
  
  import org.fourthline.cling.model.ModelUtil;
  import org.fourthline.cling.model.ServiceManager;
  import org.fourthline.cling.model.ValidationException;
  import org.fourthline.cling.model.action.ActionExecutor;
  import org.fourthline.cling.model.state.StateVariableAccessor;
  import org.fourthline.cling.model.types.ServiceId;
  import org.fourthline.cling.model.types.ServiceType;
  
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * The metadata of a service created on this host, by application code.
   * <p>
   * After instantiation {@link #setManager(org.fourthline.cling.model.ServiceManager)} must
   * be called to bind the service metadata to the service implementation.
   * </p>
   *
   * @author Christian Bauer
   */
  public class LocalService<T> extends Service<LocalDevice, LocalService> {
  
      final protected Map<Action, ActionExecutor> actionExecutors;
      final protected Map<StateVariable, StateVariableAccessor> stateVariableAccessors;
      final protected Set<Class> stringConvertibleTypes;
      final protected boolean supportsQueryStateVariables;
  
      protected ServiceManager manager;
  
      public LocalService(ServiceType serviceType, ServiceId serviceId,
                          Action[] actions, StateVariable[] stateVariables) throws ValidationException {
          super(serviceType, serviceId, actions, stateVariables);
          this.manager = null;
          this.actionExecutors = new HashMap<>();
          this.stateVariableAccessors = new HashMap<>();
          this.stringConvertibleTypes = new HashSet<>();
          this.supportsQueryStateVariables = true;
      }
  
      public LocalService(ServiceType serviceType, ServiceId serviceId,
                          Map<Action, ActionExecutor> actionExecutors,
                          Map<StateVariable, StateVariableAccessor> stateVariableAccessors,
                          Set<Class> stringConvertibleTypes,
                          boolean supportsQueryStateVariables) throws ValidationException {
  
          super(serviceType, serviceId,
                  actionExecutors.keySet().toArray(new Action[actionExecutors.size()]),
                  stateVariableAccessors.keySet().toArray(new StateVariable[stateVariableAccessors.size()])
          );
  
          this.supportsQueryStateVariables = supportsQueryStateVariables;
          this.stringConvertibleTypes = stringConvertibleTypes;
          this.stateVariableAccessors = stateVariableAccessors;
          this.actionExecutors = actionExecutors;
      }
  
      synchronized public void setManager(ServiceManager<T> manager) {
          if (this.manager != null) {
              throw new IllegalStateException("Manager is final");
          }
          this.manager = manager;
      }
  
      synchronized public ServiceManager<T> getManager() {
          if (manager == null) {
              throw new IllegalStateException("Unmanaged service, no implementation instance available");
          }
          return manager;
      }
  
      public boolean isSupportsQueryStateVariables() {
          return supportsQueryStateVariables;
      }
  
      public Set<Class> getStringConvertibleTypes() {
          return stringConvertibleTypes;
      }
  
      public boolean isStringConvertibleType(Object o) {
          return o != null && isStringConvertibleType(o.getClass());
     }
 
     public boolean isStringConvertibleType(Class clazz) {
         return ModelUtil.isStringConvertibleType(getStringConvertibleTypes(), clazz);
     }
 
     public StateVariableAccessor getAccessor(String stateVariableName) {
         StateVariable sv;
         return (sv = getStateVariable(stateVariableName)) != null ? getAccessor(sv) : null;
     }
 
     public StateVariableAccessor getAccessor(StateVariable stateVariable) {
         return stateVariableAccessors.get(stateVariable);
     }
 
     public ActionExecutor getExecutor(String actionName) {
         Action action;
         return (action = getAction(actionName)) != null ? getExecutor(action) : null;
     }
 
     public ActionExecutor getExecutor(Action action) {
         return actionExecutors.get(action);
     }
 
     @Override
     public Action getQueryStateVariableAction() {
         return getAction(QueryStateVariableAction.ACTION_NAME);
     }
 
     @Override
     public String toString() {
         return super.toString()  + ", Manager: " + manager;
     }
 }