/*
 * Copyright (c) 2012, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.ts.tests.jaxrs.ee.rs.core.response;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Date;
import java.util.concurrent.atomic.AtomicInteger;

import jakarta.ws.rs.Consumes;
import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.MessageBodyReader;
import jakarta.ws.rs.ext.MessageBodyWriter;
import jakarta.ws.rs.ext.Provider;

@Provider
public class DateReaderWriter
    implements MessageBodyReader<Date>, MessageBodyWriter<Date> {

  public static final int ANNOTATION_NONE = 0;

  public static final int ANNOTATION_CONSUMES = 1 << 2;

  public static final int ANNOTATION_PROVIDER = 1 << 3;

  public static final int ANNOTATION_UNKNOWN = 1 << 7;

  private AtomicInteger atom;

  public DateReaderWriter(AtomicInteger atom) {
    super();
    this.atom = atom;
  }

  @Override
  public long getSize(Date arg0, Class<?> arg1, Type arg2, Annotation[] arg3,
      MediaType arg4) {
    return String.valueOf(Long.MAX_VALUE).length();
  }

  @Override
  public boolean isWriteable(Class<?> arg0, Type arg1, Annotation[] arg2,
      MediaType arg3) {
    return arg0 == Date.class;
  }

  @Override
  public void writeTo(Date date, Class<?> arg1, Type arg2, Annotation[] arg3,
      MediaType arg4, MultivaluedMap<String, Object> arg5, OutputStream stream)
      throws IOException, WebApplicationException {
    parseAnnotations(arg3);
    stream.write(String.valueOf(date.getTime()).getBytes());
  }

  @Override
  public boolean isReadable(Class<?> arg0, Type arg1, Annotation[] arg2,
      MediaType arg3) {
    return isWriteable(arg0, arg1, arg2, arg3);
  }

  @Override
  public Date readFrom(Class<Date> arg0, Type arg1, Annotation[] arg2,
      MediaType arg3, MultivaluedMap<String, String> arg4, InputStream arg5)
      throws IOException, WebApplicationException {
    parseAnnotations(arg2);

    InputStreamReader reader = new InputStreamReader(arg5);
    BufferedReader br = new BufferedReader(reader);
    long date = Long.parseLong(br.readLine());
    return new Date(date);
  }

  protected void parseAnnotations(Annotation[] annotations) {
    int value = ANNOTATION_NONE;
    if (annotations != null)
      for (Annotation annotation : annotations)
        if (annotation.annotationType() == Consumes.class)
          value |= ANNOTATION_CONSUMES;
        else if (annotation.annotationType() == Provider.class)
          value |= ANNOTATION_PROVIDER;
        else
          value |= ANNOTATION_UNKNOWN;
    atom.set(value);
  }
}
