/*
    * Copyright 2008 FatWire Corporation. All Rights Reserved.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *    http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.fatwire.gst.foundation.facade.assetapi;
  
  import java.util.Arrays;
  import java.util.Collections;
  
  import COM.FutureTense.Interfaces.ICS;
  import COM.FutureTense.Util.ftErrors;
  
  import com.fatwire.assetapi.common.AssetAccessException;
  import com.fatwire.assetapi.data.AssetData;
  import com.fatwire.assetapi.data.AssetDataManager;
  import com.fatwire.assetapi.data.AssetId;
  import com.fatwire.gst.foundation.CSRuntimeException;
  import com.fatwire.gst.foundation.facade.ics.ICSFactory;
  import com.fatwire.system.Session;
  import com.fatwire.system.SessionFactory;
  
  /**
   * Convenient shortcuts for working with AssetData objects
   * 
   * @author Tony Field
   * @author Dolf Dijkstra
   * @since Nov 17, 2009
   */
  public final class AssetDataUtils {
      private AssetDataUtils() {
      }
  
      /**
       * Return the AssetData for the specified asset
       * 
       * @param c
       * @param cid
       * @param attributes
       * @return asset data
       * @deprecated inconsistent method signature, replaced by {@link AssetDataUtils#getAssetData(AssetId, String...)}. 
       */
      public static AssetData getAssetData(String c, String cid, String... attributes) {
          return getAssetData(AssetIdUtils.createAssetId(c, cid), attributes);
      }
  
      /**
       * Read all attributes for the given asset id.
       * 
       * @param id must be valid or else an exception is thrown
       * @return asset data, never null.
       */
      public static AssetData getAssetData(AssetId id) {
          return getAssetData(ICSFactory.getOrCreateICS(), id);
      }
  
      /**
       * Read all attributes for the given asset id.
       * 
       * @param ics ICS context
       * @param id must be valid or else an exception is thrown
       * @return asset data, never null.
       */
      public static AssetData getAssetData(ICS ics, AssetId id) {
          AssetDataManager mgr = (AssetDataManager) getSession(ics).getManager(AssetDataManager.class.getName());
          try {
              for (AssetData data : mgr.read(Collections.singletonList(id))) {
                  return data; // first one wins
              }
          } catch (AssetAccessException e) {
              throw new CSRuntimeException("Failed to read attribute data: " + e, ftErrors.exceptionerr, e);
          }
          throw new CSRuntimeException("Asset not found: " + id, ftErrors.badparams);
      }
  
      /**
       * Return the AssetData for the specified asset
       * 
       * @param id
       * @param attributes
       * @return asset data
       */
      public static AssetData getAssetData(AssetId id, String... attributes) {
          return getAssetData(ICSFactory.getOrCreateICS(), id, attributes);
      }
  
      /**
       * Return the AssetData for the specified asset
      * 
      * @param id
      * @param attributes
      * @return asset data
      */
     public static AssetData getAssetData(ICS ics, AssetId id, String... attributes) {
         AssetDataManager mgr = (AssetDataManager) getSession(ics).getManager(AssetDataManager.class.getName());
         try {
             return mgr.readAttributes(id, Arrays.asList(attributes));
         } catch (AssetAccessException e) {
             throw new CSRuntimeException("Failed to read attribute data: " + e, ftErrors.exceptionerr, e);
         }
     }
 
     /**
      * This is a convenience method to read AssetData for the current c/cid
      * asset on the ics scope.
      * 
      * @param ics
      * @param attributes
      * @return asset data
      */
     public static AssetData getCurrentAssetData(ICS ics, String... attributes) {
         AssetDataManager mgr = (AssetDataManager) getSession(ics).getManager(AssetDataManager.class.getName());
         try {
             AssetId id = AssetIdUtils.currentId(ics);
             return mgr.readAttributes(id, Arrays.asList(attributes));
         } catch (AssetAccessException e) {
             throw new CSRuntimeException("Failed to read attribute data: " + e, ftErrors.exceptionerr, e);
         }
 
     }
 
     /**
      * This is a convenience method to read AssetData for the current c/cid
      * asset on the ics scope.
      * 
      * @param ics
      * @return asset data
      */
     public static AssetData getCurrentAssetData(ICS ics) {
         AssetDataManager mgr = (AssetDataManager) getSession(ics).getManager(AssetDataManager.class.getName());
         AssetId id = AssetIdUtils.currentId(ics);
         try {
             for (AssetData data : mgr.read(Collections.singletonList(id))) {
                 return data; // first one wins
             }
         } catch (AssetAccessException e) {
             throw new CSRuntimeException("Failed to read attribute data: " + e, ftErrors.exceptionerr, e);
         }
         throw new CSRuntimeException("Asset not found: " + id, ftErrors.badparams);
 
     }
 
     private static Session getSession(ICS ics) {
         return SessionFactory.getSession(ics);
     }
 
 }