/*
    * 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.config.Configurable;
  import org.apache.myfaces.tobago.layout.Measure;
  
  import javax.faces.context.FacesContext;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  
  public class ResourceManagerUtils {
  
    private ResourceManagerUtils() {
      // no instance
    }
  
    public static String getProperty(FacesContext facesContext, String bundle, String key) {
      return     org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getProperty(facesContext, bundle, key);
    }
  
    public static String getPropertyNotNull(FacesContext facesContext, String bundle, String key) {
      String result = org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getProperty(facesContext, bundle, key);
      if (result == null) {
        return "???" + key + "???";
      } else {
        return result;
      }
    }
  
    /**
     * Searches for an image and return it with the context path
     */
    public static String getImageWithPath(FacesContext facesContext, String name) {
      return facesContext.getExternalContext().getRequestContextPath()
          + org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getImage(facesContext, name);
    }
  
    /**
     * Searches for an image and return it with the context path
     */
    public static String getImageWithPath(FacesContext facesContext, String name, boolean ignoreMissing) {
      String image = org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getImage(facesContext, name, ignoreMissing);
      if (image == null) {
        return null;
      } else {
        return facesContext.getExternalContext().getRequestContextPath() + image;
      }
    }
  
    public static List<String> getStyles(FacesContext facesContext, String name) {
      String contextPath = facesContext.getExternalContext().getRequestContextPath();
      String[] styles = org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getStyles(facesContext, name);
      return addContextPath(styles, contextPath);
    }
  
    private static List<String> addContextPath(String[] strings, String contextPath) {
      List<String> withContext = new ArrayList<String>(strings.length);
      for (String string : strings) {
        withContext.add(contextPath + string);
      }
      return withContext;
    }
  
    public static List<String> getScripts(FacesContext facesContext, String name) {
      String contextPath = facesContext.getExternalContext().getRequestContextPath();
      String[] scripts = org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
          .getResourceManager(facesContext).getScripts(facesContext, name);
      return addContextPath(scripts, contextPath);
    }
  
    public static String getScriptsAsJSArray(FacesContext facesContext, String[] names) {
      List<String> fileNames = new ArrayList<String>();
      for (String name : names) {
        fileNames.addAll(getScripts(facesContext, name));
      }
     return toJSArray(fileNames);
   }
 
   public static String getStylesAsJSArray(FacesContext facesContext, String[] names) {
     List<String> fileNames = new ArrayList<String>();
     for (String name : names) {
       fileNames.addAll(getStyles(facesContext, name));
     }
     return toJSArray(fileNames);
   }
 
   public static String toJSArray(List<String> list) {
     StringBuilder sb = new StringBuilder();
     for (String name : list) {
       if (sb.length() > 0) {
         sb.append(", ");
       }
       sb.append('\'');
       sb.append(name);
       sb.append('\'');
     }
     return "[" + sb.toString() + "]";
   }
 
   public static String getDisabledImageWithPath(FacesContext facesContext, String image) {
     String filename = ResourceUtils.addPostfixToFilename(image, "Disabled");
     return getImageWithPath(facesContext, filename, true);
   }
 
   /**
    * Blank page e. g. useful to set src of iframes (to prevent https problems in ie, see TOBAGO-538)
    */
   public static String getBlankPage(FacesContext facesContext) {
     return facesContext.getExternalContext().getRequestContextPath()
         + "/org/apache/myfaces/tobago/renderkit/html/standard/blank.html";
   }
 
   public static String getPageWithoutContextPath(FacesContext facesContext, String name) {
     return org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
         .getResourceManager(facesContext).getImage(facesContext, name);
   }
   
   public static Measure getThemeMeasure(FacesContext facesContext, Configurable configurable, String name) {
     return org.apache.myfaces.tobago.internal.context.ResourceManagerFactory
         .getResourceManager(facesContext).getThemeMeasure(
         facesContext, configurable.getRendererType(), configurable.getCurrentMarkup(), name);
   }
 
   /**
    * Detects if the value is an absolute resource or if the value has to be processed by the
    * theme mechanism. A resource will be treated as absolute, if the value starts with HTTP:, HTTPS:, FTP: or a slash.
    * The case will be ignored by this check. Null values will return true.
    *
    * @param value the given resource link.
    * @return true if it is an external or absolute resource.
    */
   public static boolean isAbsoluteResource(String value) {
     if (value == null) {
       return true;
     }
     String upper = value.toUpperCase(Locale.ENGLISH);
     return (upper.startsWith("/")
         || upper.startsWith("HTTP:")
         || upper.startsWith("HTTPS:")
         || upper.startsWith("FTP:"));
   }
 
   public static String getImageOrDisabledImageWithPath(FacesContext facesContext, String image, boolean disabled) {
     String imageWithPath = null;
     if (disabled) {
       imageWithPath = ResourceManagerUtils.getDisabledImageWithPath(facesContext, image);
     }
     if (imageWithPath == null) {
       imageWithPath = ResourceManagerUtils.getImageWithPath(facesContext, image);
     }
     return imageWithPath;
   }
 }