package org.jboss.resteasy.test.core.logging.resource;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.nio.charset.StandardCharsets;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;

import org.jboss.logging.Logger;
import org.jboss.resteasy.plugins.providers.ProviderHelper;
import org.jboss.resteasy.util.NoContent;

@Provider
@Produces("aaa/bbb")
@Consumes("aaa/bbb")
public class DebugLoggingCustomReaderAndWriter implements MessageBodyReader<String>, MessageBodyWriter<String> {
    private static Logger logger = Logger.getLogger(DebugLoggingCustomReaderAndWriter.class);

    public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return true;
    }

    public long getSize(String o, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return o.getBytes().length;
    }

    public void writeTo(String o,
            Class<?> type,
            Type genericType,
            Annotation[] annotations,
            MediaType mediaType,
            MultivaluedMap<String, Object> httpHeaders,
            OutputStream entityStream) throws IOException {
        logger.info("my writeTo");
        String charset = mediaType.getParameters().get("charset");
        if (charset == null)
            entityStream.write(o.getBytes(StandardCharsets.UTF_8));
        else
            entityStream.write(o.getBytes(charset));

    }

    public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return true;
    }

    @SuppressWarnings(value = "unchecked")
    public String readFrom(Class<String> type,
            Type genericType,
            Annotation[] annotations,
            MediaType mediaType,
            MultivaluedMap<String, String> httpHeaders,
            InputStream entityStream) throws IOException {
        logger.info("my readFrom");
        if (NoContent.isContentLengthZero(httpHeaders))
            return "";
        return ProviderHelper.readString(entityStream, mediaType);
    }
}
