/*
    * Copyright 2021 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.handler.codec.http3;
  
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.channel.ChannelOutboundHandler;
  import io.netty.channel.ChannelPromise;
  
  import java.net.SocketAddress;
  
  import static io.netty.handler.codec.http3.Http3FrameValidationUtils.frameTypeUnexpected;
  import static io.netty.handler.codec.http3.Http3FrameValidationUtils.validateFrameWritten;
  
  class Http3FrameTypeDuplexValidationHandler<T extends Http3Frame> extends Http3FrameTypeInboundValidationHandler<T>
          implements ChannelOutboundHandler {
  
      Http3FrameTypeDuplexValidationHandler(Class<T> frameType) {
          super(frameType);
      }
  
      @Override
      public final void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
          T frame = validateFrameWritten(frameType, msg);
          if (frame != null) {
              write(ctx, frame, promise);
          } else {
              writeFrameDiscarded(msg, promise);
          }
      }
  
      void write(ChannelHandlerContext ctx, T msg, ChannelPromise promise) {
          ctx.write(msg, promise);
      }
  
      void writeFrameDiscarded(Object discardedFrame, ChannelPromise promise) {
          frameTypeUnexpected(promise, discardedFrame);
      }
  
      @Override
      public void flush(ChannelHandlerContext ctx) {
          ctx.flush();
      }
  
      @Override
      public void bind(ChannelHandlerContext ctx, SocketAddress localAddress, ChannelPromise promise) {
          ctx.bind(localAddress, promise);
      }
  
      @Override
      public void connect(ChannelHandlerContext ctx, SocketAddress remoteAddress, SocketAddress localAddress,
                          ChannelPromise promise) throws Exception {
          ctx.connect(remoteAddress, localAddress, promise);
      }
  
      @Override
      public void disconnect(ChannelHandlerContext ctx, ChannelPromise promise) {
          ctx.disconnect(promise);
      }
  
      @Override
      public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
          ctx.close(promise);
      }
  
      @Override
      public void deregister(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
          ctx.deregister(promise);
      }
  
      @Override
      public void read(ChannelHandlerContext ctx) throws Exception {
          ctx.read();
      }
  }