/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.client5.http;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.hc.client5.http.auth.AuthCache;
  import org.apache.hc.client5.http.auth.AuthScheme;
  import org.apache.hc.client5.http.auth.AuthSchemeFactory;
  import org.apache.hc.client5.http.auth.CredentialsProvider;
  import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
  import org.apache.hc.client5.http.cookie.CookieSpecFactory;
  import org.apache.hc.client5.http.cookie.CookieStore;
  import org.apache.hc.client5.http.impl.DefaultSchemePortResolver;
  import org.apache.hc.client5.http.impl.auth.BasicScheme;
  import org.apache.hc.client5.http.protocol.HttpClientContext;
  import org.apache.hc.client5.http.routing.RoutingSupport;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.config.Lookup;
  import org.apache.hc.core5.util.Args;
  
  /**
   * Abstract {@link HttpClientContext} builder.
   *
   * @since 5.4
   */
  public abstract class AbstractClientContextBuilder<T extends HttpClientContext> {
  
      private final SchemePortResolver schemePortResolver;
  
      private Lookup<CookieSpecFactory> cookieSpecRegistry;
      private Lookup<AuthSchemeFactory> authSchemeRegistry;
      private CookieStore cookieStore;
      private CredentialsProvider credentialsProvider;
      private AuthCache authCache;
      private Map<HttpHost, AuthScheme> authSchemeMap;
  
      protected AbstractClientContextBuilder(final SchemePortResolver schemePortResolver) {
          this.schemePortResolver = schemePortResolver != null ? schemePortResolver : DefaultSchemePortResolver.INSTANCE;
      }
  
      public AbstractClientContextBuilder<T> useCookieSpecRegistry(final Lookup<CookieSpecFactory> cookieSpecRegistry) {
          this.cookieSpecRegistry = cookieSpecRegistry;
          return this;
      }
  
      public AbstractClientContextBuilder<T> useAuthSchemeRegistry(final Lookup<AuthSchemeFactory> authSchemeRegistry) {
          this.authSchemeRegistry = authSchemeRegistry;
          return this;
      }
  
      public AbstractClientContextBuilder<T> useCookieStore(final CookieStore cookieStore) {
          this.cookieStore = cookieStore;
          return this;
      }
  
      public AbstractClientContextBuilder<T> useCredentialsProvider(final CredentialsProvider credentialsProvider) {
          this.credentialsProvider = credentialsProvider;
          return this;
      }
  
      public AbstractClientContextBuilder<T> useAuthCache(final AuthCache authCache) {
          this.authCache = authCache;
          return this;
      }
  
      public AbstractClientContextBuilder<T> preemptiveAuth(final HttpHost host, final AuthScheme authScheme) {
          Args.notNull(host, "HTTP host");
          if (authSchemeMap == null) {
              authSchemeMap = new HashMap<>();
          }
          authSchemeMap.put(RoutingSupport.normalize(host, schemePortResolver), authScheme);
          return this;
     }
 
     public AbstractClientContextBuilder<T> preemptiveBasicAuth(final HttpHost host, final UsernamePasswordCredentials credentials) {
         Args.notNull(host, "HTTP host");
         final BasicScheme authScheme = new BasicScheme();
         authScheme.initPreemptive(credentials);
         preemptiveAuth(host, authScheme);
         return this;
     }
 
     protected abstract T createContext();
 
     public T build() {
         final T context = createContext();
         context.setCookieSpecRegistry(cookieSpecRegistry);
         context.setAuthSchemeRegistry(authSchemeRegistry);
         context.setCookieStore(cookieStore);
         context.setCredentialsProvider(credentialsProvider);
         context.setAuthCache(authCache);
         if (authSchemeMap != null) {
             for (final Map.Entry<HttpHost, AuthScheme> entry : authSchemeMap.entrySet()) {
                 context.resetAuthExchange(entry.getKey(), entry.getValue());
             }
         }
         return context;
     }
 
 }