/*
    * Copyright 2012-2021 CodeLibs Project and the Others.
    *
    * 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 org.codelibs.fess.mylasta.direction.sponsor;
  
  import java.util.Locale;
  
  import org.apache.commons.lang3.LocaleUtils;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.codelibs.core.lang.StringUtil;
  import org.codelibs.fess.mylasta.direction.FessConfig;
  import org.codelibs.fess.util.ComponentUtil;
  import org.dbflute.optional.OptionalObject;
  import org.dbflute.optional.OptionalThing;
  import org.dbflute.util.DfTypeUtil;
  import org.lastaflute.web.ruts.process.ActionRuntime;
  import org.lastaflute.web.servlet.request.RequestManager;
  import org.lastaflute.web.servlet.request.UserLocaleProcessProvider;
  
  /**
   * @author jflute
   */
  public class FessUserLocaleProcessProvider implements UserLocaleProcessProvider {
      private static final Logger logger = LogManager.getLogger(FessUserLocaleProcessProvider.class);
  
      @Override
      public boolean isAcceptCookieLocale() {
          return false;
      }
  
      @Override
      public OptionalThing<Locale> findBusinessLocale(final ActionRuntime runtimeMeta, final RequestManager requestManager) {
          final FessConfig fessConfig = ComponentUtil.getFessConfig();
          final String name = fessConfig.getQueryBrowserLangParameterName();
          if (StringUtil.isNotBlank(name)) {
              try {
                  return requestManager.getParameter(name).filter(StringUtil::isNotBlank).map(LocaleUtils::toLocale);
              } catch (final Exception e) {
                  logger.debug("Failed to parse a value of {}.", name, e);
              }
          }
          return OptionalObject.empty();
      }
  
      @Override
      public OptionalThing<Locale> getRequestedLocale(final RequestManager requestManager) {
          return OptionalObject.empty(); // means browser default
      }
  
      // ===================================================================================
      //                                                                      Basic Override
      //                                                                      ==============
      @Override
      public String toString() {
          final String hash = Integer.toHexString(hashCode());
          return DfTypeUtil.toClassTitle(this) + ":{acceptCookieLocale=" + isAcceptCookieLocale() + "}@" + hash;
      }
  }