/*
    * Copyright 2010 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.wra;
  
  import java.util.Arrays;
  import java.util.Collections;
  
  import COM.FutureTense.Interfaces.ICS;
  
  import com.fatwire.assetapi.data.AssetData;
  import com.fatwire.assetapi.data.AssetId;
  import com.fatwire.cs.core.db.PreparedStmt;
  import com.fatwire.cs.core.db.StatementParam;
  import com.fatwire.gst.foundation.controller.AssetIdWithSite;
  import com.fatwire.gst.foundation.facade.assetapi.AssetDataUtils;
  import com.fatwire.gst.foundation.facade.assetapi.AssetMapper;
  import com.fatwire.gst.foundation.facade.assetapi.AttributeDataUtils;
  import com.fatwire.gst.foundation.facade.assetapi.asset.TemplateAsset;
  import com.fatwire.gst.foundation.facade.sql.Row;
  import com.fatwire.gst.foundation.facade.sql.SqlHelper;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * Dao for dealing with core fields in a WRA This DAO is not aware of Aliases.
   * To work with Alias assets, see {@link AliasCoreFieldDao}.}
   * 
   * @author Tony Field
   * @since Jul 21, 2010
   */
  public class AssetApiWraCoreFieldDao implements WraCoreFieldDao {
  
      public static final AssetApiWraCoreFieldDao getInstance(ICS ics) {
          if (ics == null) {
              throw new IllegalArgumentException("ics must not be null.");
          }
  
          Object o = ics.GetObj(AssetApiWraCoreFieldDao.class.getName());
          if (o == null) {
              o = new AssetApiWraCoreFieldDao(ics);
              ics.SetObj(AssetApiWraCoreFieldDao.class.getName(), o);
          }
          return (AssetApiWraCoreFieldDao) o;
      }
  
      private final ICS ics;
  
      public AssetApiWraCoreFieldDao(ICS ics) {
          this.ics = ics;
      }
  
      private static final Log LOG = LogFactory.getLog(AssetApiWraCoreFieldDao.class);
  
      /**
       * Return an AssetData object containing the core fields found in a
       * web-referenceable asset.
       * <p/>
       * Also includes selected metadata fields:
       * <ul>
       * <li>id</li>
       * <li>name</li>
       * <li>subtype</li>
       * <li>startdate</li>
       * <li>enddate</li>
       * <li>status</li>
       * </ul>
       * 
       * @param id id of web-referenceable asset
       * @return AssetData containing core fields for Web-Referencable asset
       */
      private AssetData getAsAssetData(AssetId id) {
          return AssetDataUtils.getAssetData(ics, id, WRA_ATTRIBUTE_NAMES);
      }
  
      /**
       * Method to test whether or not an asset is web-referenceable.
       * 
       * @param id asset ID to check
       * @return true if the asset is a valid web-referenceable asset, false if it
       *         is not
       */
      public boolean isWebReferenceable(AssetId id) {
          try {
              WebReferenceableAsset wra = getWra(id);
             return isWebReferenceable(wra);
         } catch (RuntimeException e) {
             return false;
         }
     }
 
     public boolean isWebReferenceable(TemplateAsset candidate) {
         return isWebReferenceable(new WraBeanImpl(candidate));
     }
 
     /**
      * Method to test whether or not an asset is web-referenceable. 
      *
      * @param candidate asset to test
      * @return true if the asset is a valid web-referenceable asset, false if it
      *         is not
      */
     public boolean isWebReferenceable(WebReferenceableAsset candidate) {
         return StringUtils.isNotBlank(candidate.getPath()) && StringUtils.isNotBlank(candidate.getTemplate());
     }
 
     /**
      * Return a web referenceable asset bean given an input id. Required fields
      * must be set or an exception is thrown.
      * 
      * @param id asset id
      * @return WebReferenceableAsset, never null
      * @see #isWebReferenceable
      */
     public WebReferenceableAsset getWra(AssetId id) {
         AssetData data = getAsAssetData(id);
         return mapper.map(data);
     }
 
     private AssetMapper<WebReferenceableAsset> mapper = new AssetMapper<WebReferenceableAsset>() {
 
         public WebReferenceableAsset map(AssetData data) {
             WraBeanImpl wra = new WraBeanImpl();
             wra.setId(data.getAssetId());
             wra.setName(AttributeDataUtils.getWithFallback(data, "name"));
             wra.setDescription(AttributeDataUtils.asString(data.getAttributeData("description")));
             wra.setSubtype(AttributeDataUtils.asString(data.getAttributeData("subtype")));
             wra.setStatus(AttributeDataUtils.asString(data.getAttributeData("status")));
             wra.setStartDate(AttributeDataUtils.asDate(data.getAttributeData("startdate")));
             wra.setEndDate(AttributeDataUtils.asDate(data.getAttributeData("enddate")));
             wra.setMetaTitle(AttributeDataUtils.getWithFallback(data, "metatitle"));
             wra.setMetaDescription(AttributeDataUtils.getWithFallback(data, "metadescription"));
             wra.setMetaKeyword(AttributeDataUtils.asString(data.getAttributeData("metakeyword")));
             wra.setH1Title(AttributeDataUtils.getWithFallback(data, "h1title"));
             wra.setLinkText(AttributeDataUtils.getWithFallback(data, "linktext", "h1title"));
             wra.setPath(AttributeDataUtils.asString(data.getAttributeData("path")));
             wra.setTemplate(AttributeDataUtils.asString(data.getAttributeData("template")));
             return wra;
         }
 
     };
     private AssetMapper<VanityAsset> vmapper = new AssetMapper<VanityAsset>() {
 
         public VanityAsset map(AssetData data) {
             VanityAssetBean wra = new VanityAssetBean();
             wra.setId(data.getAssetId());
             wra.setName(AttributeDataUtils.getWithFallback(data, "name"));
             wra.setDescription(AttributeDataUtils.asString(data.getAttributeData("description")));
             wra.setSubtype(AttributeDataUtils.asString(data.getAttributeData("subtype")));
             wra.setStatus(AttributeDataUtils.asString(data.getAttributeData("status")));
             wra.setStartDate(AttributeDataUtils.asDate(data.getAttributeData("startdate")));
             wra.setEndDate(AttributeDataUtils.asDate(data.getAttributeData("enddate")));
             wra.setPath(AttributeDataUtils.asString(data.getAttributeData("path")));
             wra.setTemplate(AttributeDataUtils.asString(data.getAttributeData("template")));
             return wra;
         }
 
     };
 
     private static final String ASSETPUBLICATION_QRY = "SELECT p.name from Publication p, AssetPublication ap "
             + "WHERE ap.assettype = ? " + "AND ap.assetid = ? " + "AND ap.pubid=p.id";
     static final PreparedStmt AP_STMT = new PreparedStmt(ASSETPUBLICATION_QRY,
             Collections.singletonList("AssetPublication")); // todo: low
                                                             // priority:
     // determine
     // why publication
     // cannot fit there.
 
     static {
         AP_STMT.setElement(0, "AssetPublication", "assettype");
         AP_STMT.setElement(1, "AssetPublication", "assetid");
     }
 
     public String resolveSite(String c, String cid) {
         final StatementParam param = AP_STMT.newParam();
         param.setString(0, c);
         param.setLong(1, Long.parseLong(cid));
         String result = null;
         for (Row pubid : SqlHelper.select(ics, AP_STMT, param)) {
             if (result != null) {
                 LOG.warn("Found asset "
                         + c
                         + ":"
                         + cid
                         + " in more than one publication. It should not be shared; aliases are to be used for cross-site sharing.  Controller will use first site found: "
                         + result);
             } else {
                 result = pubid.getString("name");
             }
         }
         return result;
     }
 
     static final PreparedStmt FIND_P = new PreparedStmt(
             "SELECT art.oid FROM AssetRelationTree art, AssetPublication ap, Publication p WHERE ap.assetid = art.oid "
                     + "AND ap.assettype = 'Page' AND ap.pubid = p.id AND p.name = ? "
                     + "AND art.otype = ap.assettype AND art.nid in "
                     + "(SELECT nparentid FROM AssetRelationtree WHERE otype=? AND oid=? AND ncode='-') ORDER BY ap.id",
             Arrays.asList("AssetRelationTree", "AssetPublication", "Publication"));
 
     static {
         FIND_P.setElement(0, "Publication", "name");
         FIND_P.setElement(1, "AssetRelationTree", "otype");
         FIND_P.setElement(2, "AssetRelationTree", "oid");
     }
 
     /**
      * Locate the page that contains the specified Web-Referenceable Asset.
      * <p/>
      * A WRA is supposed to just be placed on one page (in the unnamed
      * association block), and this method locates it. If it is not found, 0L is
      * returned.
      * <p/>
      * If multiple matches are found, a warning is logged and the first one is
      * returned.
      * 
      * @param wraAssetIdWithSite id of the web-referenceable asset. Site is
      *            included
      * @return page asset ID or 0L.
      */
     public long findP(AssetIdWithSite wraAssetIdWithSite) {
         ics.ClearErrno();
         final StatementParam param = FIND_P.newParam();
         param.setString(0, wraAssetIdWithSite.getSite());
         param.setString(1, wraAssetIdWithSite.getType());
         param.setLong(2, wraAssetIdWithSite.getId());
         long result = 0L;
         for (final Row r : SqlHelper.select(ics, FIND_P, param)) {
             if (result != 0L)
                 LOG.warn("Asset "
                         + wraAssetIdWithSite
                         + " was found as the primary content on multiple pages in the site.  Web-referenceable assets should only be the primary content on one Page to comply with SEO rules.  Automatically selecting the oldest page");
             else
                 result = r.getLong("oid");
         }
         if (result == 0L) {
             // could not locate
         }
         return result;
 
     }
 
     @Override
     public boolean isVanityAsset(AssetId id) {
         try {
             AssetData data = AssetDataUtils.getAssetData(ics, id, "path", "template");
             String path = AttributeDataUtils.asString(data.getAttributeData("path"));
             String template = AttributeDataUtils.asString(data.getAttributeData("template"));
             return StringUtils.isNotBlank(path) && StringUtils.isNotBlank(template);
         } catch (RuntimeException e) {
             return false;
         }
     }
 
     @Override
     public VanityAsset getVanityWra(AssetId id) {
         AssetData data = AssetDataUtils.getAssetData(ics, id, VANITY_ATTRIBUTE_NAMES);
         return vmapper.map(data);
     }
 
 }