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/*
 * Copyright 2011-2024 GatlingCorp (https://gatling.io)
 *
 * Licensed 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.gatling.http.client.body.string;

import io.gatling.http.client.body.RequestBody;
import io.gatling.http.client.body.RequestBodyBuilder;
import io.gatling.http.client.body.WritableContent;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

public final class StringRequestBody extends RequestBody.Base {

  private final Charset charset;

  public StringRequestBody(String content, Charset charset) {
    super(content);
    this.charset = charset;
  }

  @Override
  public WritableContent build(ByteBufAllocator alloc) {
    ByteBuf bb =
        charset.equals(StandardCharsets.UTF_8)
            ? ByteBufUtil.writeUtf8(alloc, content)
            : ByteBufUtil.encodeString(alloc, CharBuffer.wrap(content), charset);

    return new WritableContent(bb, bb.readableBytes());
  }

  @Override
  public RequestBodyBuilder newBuilder() {
    return new StringRequestBodyBuilder(content);
  }

  @Override
  public byte[] getBytes() {
    return content.getBytes(charset);
  }

  @Override
  public String print(int maxLength) {
    return "StringRequestBody{"
        + "charset="
        + charset
        + ", content="
        + truncate(content, maxLength)
        + '}';
  }
}