import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.ResponseBody;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Type;

import retrofit.Converter;

final class StringConverterFactory implements Converter.Factory {
    private StringConverterFactory() {}

    public static StringConverterFactory create() {
        return new StringConverterFactory();
    }

    @Override
    public Converter<String> get(Type type) {
        return new StringConverter();
    }

    private static class StringConverter implements Converter<String> {
        private static final MediaType PLAIN_TEXT = MediaType.parse("text/plain; charset=UTF-8");

        @Override
        public String fromBody(ResponseBody body) throws IOException {
            return new String(body.bytes());
        }

        @Override
        public RequestBody toBody(String value) {
            return RequestBody.create(PLAIN_TEXT, convertToBytes(value));
        }

        private static byte[] convertToBytes(String string) {
            try {
                return string.getBytes("UTF-8");
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException(e);
            }
        }
    }
}