/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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 org.apache.myfaces.tobago.context;
  
  import org.apache.myfaces.tobago.exception.TobagoConfigurationException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.Serializable;
  import java.lang.invoke.MethodHandles;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Manages the script and style files for production and development stage.
   *
   * @since 1.5.0
   */
  public final class ThemeResources implements Serializable {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    /**
     * @deprecated since 5.0.0
     */
    @Deprecated
    private boolean production;
  
    private final List<ThemeScript> includeScripts = new ArrayList<>();
    private final List<ThemeScript> excludeScripts = new ArrayList<>();
    private final List<ThemeStyle> includeStyles = new ArrayList<>();
    private final List<ThemeStyle> excludeStyles = new ArrayList<>();
  
    public ThemeResources() {
    }
  
    /**
     * @deprecated since 5.0.0
     */
    @Deprecated
    public ThemeResources(final boolean production) {
      this.production = production;
    }
  
    /**
     * @deprecated since 5.0.0, use static {@link #merge}
     */
    @Deprecated
    public void merge(final ThemeResources fallback) {
      if (this == fallback) {
        return;
      }
      for (int i = fallback.includeScripts.size() - 1; i >= 0; i--) {
        final ThemeScript script = fallback.includeScripts.get(i);
        includeScripts.remove(script);
        if (!excludeScripts.contains(script)) {
          includeScripts.add(0, script);
        }
      }
      for (int i = fallback.includeStyles.size() - 1; i >= 0; i--) {
        final ThemeStyle style = fallback.includeStyles.get(i);
        includeStyles.remove(style);
        if (!excludeStyles.contains(style)) {
          includeStyles.add(0, style);
        }
      }
    }
  
    /**
     * @since 5.0.0
     */
    public static ThemeResources merge(final ThemeResources base, final ThemeResources add) {
      if (base.production != add.production) {
        throw new TobagoConfigurationException("Resources mismatch!");
      }
      final ThemeResources result = new ThemeResources(base.production);
  
      for (ThemeScript includeScript : base.includeScripts) {
        if (!add.excludeScripts.contains(includeScript)) {
          result.addIncludeScript(includeScript);
        }
      }
     for (ThemeScript includeScript : add.includeScripts) {
       result.addIncludeScript(includeScript);
     }
 
     for (ThemeStyle includeStyle : base.includeStyles) {
       if (!add.excludeStyles.contains(includeStyle)) {
         result.addIncludeStyle(includeStyle);
       }
     }
     for (ThemeStyle includeStyle : add.includeStyles) {
       result.addIncludeStyle(includeStyle);
     }
 
     return result;
   }
 
   /**
    * @deprecated since 5.0.0
    */
   @Deprecated
   public boolean isProduction() {
     return production;
   }
 
   /**
    * @since 5.0.0
    */
   public boolean addIncludeScript(final ThemeScript script) {
     for (ThemeScript resource : includeScripts) {
       if (resource.getName().equals(script.getName())) {
         LOG.warn("Overwriting include script '{}'", script.getName());
         includeScripts.remove(resource);
         break;
       }
     }
     return includeScripts.add(script);
   }
 
   /**
    * @since 5.0.0
    */
   public boolean addExcludeScript(final ThemeScript script) {
     for (ThemeScript resource : excludeScripts) {
       if (resource.getName().equals(script.getName())) {
         LOG.warn("Overwriting exclude script '{}'", script.getName());
         includeScripts.remove(resource);
         break;
       }
     }
     return excludeScripts.add(script);
   }
 
   /**
    * @deprecated since 5.0.0, use {@link #addIncludeScript} or {@link #addExcludeScript}
    */
   @Deprecated
   public boolean addScript(final ThemeScript script, final boolean exclude) {
     return exclude ? addExcludeScript(script) : addIncludeScript(script);
   }
 
   /**
    * @since 5.0.0
    */
   public boolean addIncludeStyle(final ThemeStyle style) {
     for (ThemeStyle resource : includeStyles) {
       if (resource.getName().equals(style.getName())) {
         LOG.warn("Overwriting include style '{}'", style.getName());
         includeStyles.remove(resource);
         break;
       }
     }
     return includeStyles.add(style);
   }
 
   /**
    * @since 5.0.0
    */
   public boolean addExcludeStyle(final ThemeStyle style) {
     for (ThemeStyle resource : excludeStyles) {
       if (resource.getName().equals(style.getName())) {
         LOG.warn("Overwriting exclude style '{}'", style.getName());
         includeStyles.remove(resource);
         break;
       }
     }
     return excludeStyles.add(style);
   }
 
   /**
    * @deprecated since 5.0.0, use {@link #addIncludeStyle} or {@link #addExcludeStyle}
    */
   @Deprecated
   public boolean addStyle(final ThemeStyle style, final boolean exclude) {
     return exclude ? addExcludeStyle(style) : addIncludeStyle(style);
   }
 
   public List<ThemeScript> getScriptList() {
     return includeScripts;
   }
 
   public List<ThemeStyle> getStyleList() {
     return includeStyles;
   }
 }