/*
    * Copyright (c) 2011-2024 PrimeFaces Extensions
    *
    *  Permission is hereby granted, free of charge, to any person obtaining a copy
    *  of this software and associated documentation files (the "Software"), to deal
    *  in the Software without restriction, including without limitation the rights
    *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    *  copies of the Software, and to permit persons to whom the Software is
    *  furnished to do so, subject to the following conditions:
   *
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   *  THE SOFTWARE.
   */
  package org.primefaces.extensions.config;
  
  import javax.faces.context.FacesContext;
  import javax.servlet.ServletContext;
  
  import org.primefaces.util.LangUtils;
  
  /**
   * @since 8.0.1
   */
  public class PrimeExtensionsEnvironment {
  
      public static final String INSTANCE_KEY = PrimeExtensionsEnvironment.class.getName();
  
      private final boolean commonmarkAvailable;
      private final boolean libphonenumberAvailable;
  
      public PrimeExtensionsEnvironment() {
          commonmarkAvailable = LangUtils.tryToLoadClassForName("org.commonmark.parser.Parser") != null;
          libphonenumberAvailable = LangUtils.tryToLoadClassForName("com.google.i18n.phonenumbers.Phonenumber") != null;
      }
  
      public static PrimeExtensionsEnvironment getCurrentInstance(FacesContext context) {
          if (context == null || context.getExternalContext() == null) {
              return null;
          }
  
          PrimeExtensionsEnvironment pfeEnv = getFromContext(context);
          if (pfeEnv == null) {
              pfeEnv = new PrimeExtensionsEnvironment();
              setCurrentInstance(pfeEnv, context);
          }
  
          return pfeEnv;
      }
  
      private static PrimeExtensionsEnvironment getFromContext(FacesContext context) {
          return (PrimeExtensionsEnvironment) context.getExternalContext().getApplicationMap().get(INSTANCE_KEY);
      }
  
      public static void setCurrentInstance(PrimeExtensionsEnvironment pfeEnv, FacesContext context) {
          context.getExternalContext().getApplicationMap().put(INSTANCE_KEY, pfeEnv);
  
          if (context.getExternalContext().getContext() instanceof ServletContext) {
              ((ServletContext) context.getExternalContext().getContext()).setAttribute(INSTANCE_KEY, pfeEnv);
          }
      }
  
      public boolean isCommonmarkAvailable() {
          return commonmarkAvailable;
      }
  
      public boolean isLibphonenumberAvailable() {
          return libphonenumberAvailable;
      }
  
  }