/*
    * 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.commons.fileupload2.jakarta.servlet6;
  
  import java.io.BufferedReader;
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.UnsupportedEncodingException;
  import java.security.Principal;
  import java.util.Collection;
  import java.util.Enumeration;
  import java.util.Locale;
  import java.util.Map;
  
  import org.apache.commons.fileupload2.core.AbstractFileUpload;
  
  import jakarta.servlet.AsyncContext;
  import jakarta.servlet.DispatcherType;
  import jakarta.servlet.ReadListener;
  import jakarta.servlet.RequestDispatcher;
  import jakarta.servlet.ServletConnection;
  import jakarta.servlet.ServletContext;
  import jakarta.servlet.ServletException;
  import jakarta.servlet.ServletInputStream;
  import jakarta.servlet.ServletRequest;
  import jakarta.servlet.ServletResponse;
  import jakarta.servlet.http.Cookie;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  import jakarta.servlet.http.HttpSession;
  import jakarta.servlet.http.HttpUpgradeHandler;
  import jakarta.servlet.http.Part;
  
  public class JakartaMockServletHttpRequest implements HttpServletRequest {
  
      private static final class MyServletInputStream extends jakarta.servlet.ServletInputStream {
  
          private final InputStream inputStream;
          private final int readLimit;
  
          /**
           * Creates a new instance, which returns the given streams data.
           */
          public MyServletInputStream(final InputStream inputStream, final int readLimit) {
              this.inputStream = inputStream;
              this.readLimit = readLimit;
          }
  
          @Override
          public boolean isFinished() {
              return false;
          }
  
          @Override
          public boolean isReady() {
              return false;
          }
  
          @Override
          public int read() throws IOException {
              return inputStream.read();
          }
  
          @Override
          public int read(final byte[] b, final int off, final int len) throws IOException {
              if (readLimit > 0) {
                  return inputStream.read(b, off, Math.min(readLimit, len));
              }
              return inputStream.read(b, off, len);
          }
  
          @Override
          public void setReadListener(final ReadListener readListener) {
              throw new IllegalStateException("Not implemented");
          }
  
      }
  
      private final InputStream requestInputStream;
  
      private long requestLength;
  
      private final String contentType;
  
     private int readLimit = -1;
 
     private final Map<String, String> headers = new java.util.HashMap<>();
 
     /**
      * Creates a new instance with the given request data and content type.
      */
     public JakartaMockServletHttpRequest(final byte[] requestData, final String strContentType) {
         this(new ByteArrayInputStream(requestData), requestData.length, strContentType);
     }
 
     /**
      * Creates a new instance with the given request data and content type.
      */
     public JakartaMockServletHttpRequest(final InputStream requestData, final long requestLength, final String strContentType) {
         this.requestInputStream = requestData;
         this.requestLength = requestLength;
         this.contentType = strContentType;
         this.headers.put(AbstractFileUpload.CONTENT_TYPE, strContentType);
     }
 
     @Override
     public boolean authenticate(final HttpServletResponse response) throws IOException, ServletException {
         return false;
     }
 
     @Override
     public String changeSessionId() {
         return null;
     }
 
     @Override
     public AsyncContext getAsyncContext() {
         return null;
     }
 
     /**
      * @see ServletRequest#getAttribute(String)
      */
     @Override
     public Object getAttribute(final String arg0) {
         return null;
     }
 
     /**
      * @see ServletRequest#getAttributeNames()
      */
     @Override
     public Enumeration<String> getAttributeNames() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getAuthType()
      */
     @Override
     public String getAuthType() {
         return null;
     }
 
     /**
      * @see ServletRequest#getCharacterEncoding()
      */
     @Override
     public String getCharacterEncoding() {
         return null;
     }
 
     /**
      * @see ServletRequest#getContentLength()
      */
     @Override
     public int getContentLength() {
         return requestInputStream != null ? Math.toIntExact(requestLength) : -1;
     }
 
     @Override
     public long getContentLengthLong() {
         return getContentLength();
     }
 
     /**
      * @see ServletRequest#getContentType()
      */
     @Override
     public String getContentType() {
         return contentType;
     }
 
     /**
      * @see HttpServletRequest#getContextPath()
      */
     @Override
     public String getContextPath() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getCookies()
      */
     @Override
     public Cookie[] getCookies() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getDateHeader(String)
      */
     @Override
     public long getDateHeader(final String arg0) {
         return 0;
     }
 
     @Override
     public DispatcherType getDispatcherType() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getHeader(String)
      */
     @Override
     public String getHeader(final String headerName) {
         return headers.get(headerName);
     }
 
     /**
      * @see HttpServletRequest#getHeaderNames()
      */
     @Override
     public Enumeration<String> getHeaderNames() {
         // todo - implement
         return null;
     }
 
     /**
      * @see HttpServletRequest#getHeaders(String)
      */
     @Override
     public Enumeration<String> getHeaders(final String arg0) {
         // todo - implement
         return null;
     }
 
     /**
      * @see ServletRequest#getInputStream()
      */
     @Override
     public ServletInputStream getInputStream() throws IOException {
         return new MyServletInputStream(requestInputStream, readLimit);
     }
 
     /**
      * @see HttpServletRequest#getIntHeader(String)
      */
     @Override
     public int getIntHeader(final String arg0) {
         return 0;
     }
 
     /**
      * @see ServletRequest#getLocalAddr()
      */
     @Override
     @SuppressWarnings("javadoc") // This is a Servlet 2.4 method
     public String getLocalAddr() {
         return null;
     }
 
     /**
      * @see ServletRequest#getLocale()
      */
     @Override
     public Locale getLocale() {
         return null;
     }
 
     /**
      * @see ServletRequest#getLocales()
      */
     @Override
     public Enumeration<Locale> getLocales() {
         return null;
     }
 
     /**
      * @see ServletRequest#getLocalName()
      */
     @Override
     @SuppressWarnings("javadoc") // This is a Servlet 2.4 method
     public String getLocalName() {
         return null;
     }
 
     /**
      * @see ServletRequest#getLocalPort()
      */
     @Override
     @SuppressWarnings("javadoc") // This is a Servlet 2.4 method
     public int getLocalPort() {
         return 0;
     }
 
     /**
      * @see HttpServletRequest#getMethod()
      */
     @Override
     public String getMethod() {
         return null;
     }
 
     /**
      * @see ServletRequest#getParameter(String)
      */
     @Override
     public String getParameter(final String arg0) {
         return null;
     }
 
     /**
      * @see ServletRequest#getParameterMap()
      */
     @Override
     public Map<String, String[]> getParameterMap() {
         return null;
     }
 
     /**
      * @see ServletRequest#getParameterNames()
      */
     @Override
     public Enumeration<String> getParameterNames() {
         return null;
     }
 
     /**
      * @see ServletRequest#getParameterValues(String)
      */
     @Override
     public String[] getParameterValues(final String arg0) {
         return null;
     }
 
     @Override
     public Part getPart(final String name) throws IOException, ServletException {
         return null;
     }
 
     @Override
     public Collection<Part> getParts() throws IOException, ServletException {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getPathInfo()
      */
     @Override
     public String getPathInfo() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getPathTranslated()
      */
     @Override
     public String getPathTranslated() {
         return null;
     }
 
     /**
      * @see ServletRequest#getProtocol()
      */
     @Override
     public String getProtocol() {
         return null;
     }
 
     @Override
     public String getProtocolRequestId() {
         throw new IllegalStateException("Not implemented 6.0.0");
     }
 
     /**
      * @see HttpServletRequest#getQueryString()
      */
     @Override
     public String getQueryString() {
         return null;
     }
 
     /**
      * @see ServletRequest#getReader()
      */
     @Override
     public BufferedReader getReader() throws IOException {
         return null;
     }
 
     /**
      * @see ServletRequest#getRemoteAddr()
      */
     @Override
     public String getRemoteAddr() {
         return null;
     }
 
     /**
      * @see ServletRequest#getRemoteHost()
      */
     @Override
     public String getRemoteHost() {
         return null;
     }
 
     /**
      * @see ServletRequest#getRemotePort()
      */
     @Override
     @SuppressWarnings("javadoc") // This is a Servlet 2.4 method
     public int getRemotePort() {
         return 0;
     }
 
     /**
      * @see HttpServletRequest#getRemoteUser()
      */
     @Override
     public String getRemoteUser() {
         return null;
     }
 
     /**
      * @see ServletRequest#getRequestDispatcher(String)
      */
     @Override
     public RequestDispatcher getRequestDispatcher(final String arg0) {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getRequestedSessionId()
      */
     @Override
     public String getRequestedSessionId() {
         return null;
     }
 
     @Override
     public String getRequestId() {
         throw new IllegalStateException("Not implemented 6.0.0");
     }
 
     /**
      * @see HttpServletRequest#getRequestURI()
      */
     @Override
     public String getRequestURI() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getRequestURL()
      */
     @Override
     public StringBuffer getRequestURL() {
         return null;
     }
 
     /**
      * @see ServletRequest#getScheme()
      */
     @Override
     public String getScheme() {
         return null;
     }
 
     /**
      * @see ServletRequest#getServerName()
      */
     @Override
     public String getServerName() {
         return null;
     }
 
     /**
      * @see ServletRequest#getServerPort()
      */
     @Override
     public int getServerPort() {
         return 0;
     }
 
     @Override
     public ServletConnection getServletConnection() {
         throw new IllegalStateException("Not implemented");
     }
 
     @Override
     public ServletContext getServletContext() {
         final var session = getSession();
         if (session == null) {
             return null;
         }
         return session.getServletContext();
     }
 
     /**
      * @see HttpServletRequest#getServletPath()
      */
     @Override
     public String getServletPath() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getSession()
      */
     @Override
     public HttpSession getSession() {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getSession(boolean)
      */
     @Override
     public HttpSession getSession(final boolean arg0) {
         return null;
     }
 
     /**
      * @see HttpServletRequest#getUserPrincipal()
      */
     @Override
     public Principal getUserPrincipal() {
         return null;
     }
 
     @Override
     public boolean isAsyncStarted() {
         return false;
     }
 
     @Override
     public boolean isAsyncSupported() {
         return false;
     }
 
     /**
      * @see HttpServletRequest#isRequestedSessionIdFromCookie()
      */
     @Override
     public boolean isRequestedSessionIdFromCookie() {
         return false;
     }
 
     /**
      * @see HttpServletRequest#isRequestedSessionIdFromURL()
      */
     @Override
     public boolean isRequestedSessionIdFromURL() {
         return false;
     }
 
     /**
      * @see HttpServletRequest#isRequestedSessionIdValid()
      */
     @Override
     public boolean isRequestedSessionIdValid() {
         return false;
     }
 
     /**
      * @see ServletRequest#isSecure()
      */
     @Override
     public boolean isSecure() {
         return false;
     }
 
     /**
      * @see HttpServletRequest#isUserInRole(String)
      */
     @Override
     public boolean isUserInRole(final String arg0) {
         return false;
     }
 
     @Override
     public void login(final String username, final String password) throws ServletException {
         throw new IllegalStateException("Not implemented");
     }
 
     @Override
     public void logout() throws ServletException {
         throw new IllegalStateException("Not implemented");
     }
 
     /**
      * @see ServletRequest#removeAttribute(String)
      */
     @Override
     public void removeAttribute(final String arg0) {
     }
 
     /**
      * @see ServletRequest#setAttribute(String, Object)
      */
     @Override
     public void setAttribute(final String arg0, final Object arg1) {
     }
 
     /**
      * @see ServletRequest#setCharacterEncoding(String)
      */
     @Override
     public void setCharacterEncoding(final String arg0) throws UnsupportedEncodingException {
     }
 
     /**
      * For testing attack scenarios in SizesTest.
      */
     public void setContentLength(final long length) {
         this.requestLength = length;
     }
 
     /**
      * Sets the read limit. This can be used to limit the number of bytes to read ahead.
      *
      * @param readLimit the read limit to use
      */
     public void setReadLimit(final int readLimit) {
         this.readLimit = readLimit;
     }
 
     @Override
     public AsyncContext startAsync() throws IllegalStateException {
         throw new IllegalStateException("Not implemented");
     }
 
     @Override
     public AsyncContext startAsync(final ServletRequest servletRequest, final ServletResponse servletResponse) throws IllegalStateException {
         throw new IllegalStateException("Not implemented");
     }
 
     @Override
     public <T extends HttpUpgradeHandler> T upgrade(final Class<T> handlerClass) throws IOException, ServletException {
         throw new IllegalStateException("Not implemented");
     }
 }