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/*
 * Copyright © 2012 The Feign Authors ([email protected])
 *
 * 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 feign.form.multipart;

import static feign.form.ContentProcessor.CRLF;

import feign.codec.EncodeException;
import lombok.val;

/**
 * A writer for a single parameter.
 *
 * @author Artem Labazin
 */
public class SingleParameterWriter extends AbstractWriter {

  @Override
  public boolean isApplicable(Object value) {
    return value instanceof Number || value instanceof CharSequence || value instanceof Boolean;
  }

  @Override
  protected void write(Output output, String key, Object value) throws EncodeException {
    val string =
        new StringBuilder()
            .append("Content-Disposition: form-data; name=\"")
            .append(key)
            .append('"')
            .append(CRLF)
            .append("Content-Type: text/plain; charset=")
            .append(output.getCharset().name())
            .append(CRLF)
            .append(CRLF)
            .append(value.toString())
            .toString();

    output.write(string);
  }
}