/*

  * 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.shiro.guice.web;

 import java.util.Collections;

 import java.util.HashSet;

 import java.util.Map;

 import java.util.Set;

 import javax.servlet.Filter;

 import com.google.inject.Inject;

 import com.google.inject.Injector;

 import com.google.inject.Key;

 import com.google.inject.Singleton;

 import com.google.inject.spi.Dependency;

 import com.google.inject.spi.ProviderWithDependencies;

 import org.apache.shiro.util.AntPathMatcher;

 import org.apache.shiro.util.PatternMatcher;

 import org.apache.shiro.web.filter.mgt.FilterChainResolver;

 @Singleton

 class FilterChainResolverProvider implements ProviderWithDependencies<FilterChainResolver> {

     @Inject

     Injector injector;

     private final Map<String, Key<? extends Filter>[]> chains;

     private final Set<Dependency<?>> dependencies;

     private PatternMatcher patternMatcher = new AntPathMatcher();

     public FilterChainResolverProvider(Map<String, Key<? extends Filter>[]> chains) {

         this.chains = chains;

         Set<Dependency<?>> dependenciesBuilder = new HashSet<Dependency<?>>();

         for (String chain : chains.keySet()) {

             for (Key<? extends Filter> filterKey : chains.get(chain)) {

                 dependenciesBuilder.add(Dependency.get(filterKey));

             }

         }

         this.dependencies = Collections.unmodifiableSet(dependenciesBuilder);

     }

     @Inject(optional = true)

     public void setPatternMatcher(PatternMatcher patternMatcher) {

         this.patternMatcher = patternMatcher;

     }

     public Set<Dependency<?>> getDependencies() {

         return dependencies;

     }

     public FilterChainResolver get() {

         return new SimpleFilterChainResolver(chains, injector, patternMatcher);

     }

 }