/*
 * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
 *
 * Entgra (Pvt) Ltd. 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 io.entgra.device.mgt.core.webapp.authenticator.framework.util;

import org.apache.catalina.connector.InputBuffer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.coyote.Request;
import org.apache.tomcat.util.buf.ByteChunk;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.http.MimeHeaders;

import java.io.IOException;
import java.lang.reflect.Field;

/**
 * This is a dummy implementation of {@link InputBuffer} for the test cases.
 */
public class TestInputBuffer implements org.apache.coyote.InputBuffer {
    private Log log = LogFactory.getLog(TestInputBuffer.class);

    @Override
    public int doRead(ByteChunk byteChunk, Request request) throws IOException {
        String string = request.getHeader("custom");
        MimeHeaders mimeHeaders = new MimeHeaders();
        Field byteC = null;
        try {
            byteC = MessageBytes.class.getDeclaredField("byteC");
            byteC.setAccessible(true);
        } catch (NoSuchFieldException e) {
            log.error("Cannot get the byteC field", e);
        }
        MessageBytes bytes = mimeHeaders.addValue("content-type");
        try {
            if (byteC != null) {
                byteC.set(bytes, byteChunk);
            }
        } catch (IllegalAccessException e) {
            log.error("Cannot set byteC field", e);
        }
        bytes.setString(string);
        bytes.toBytes();
        return byteChunk.getLength();
    }
}
