package org.jboss.resteasy.plugins.providers.multipart;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.concurrent.CompletionStage;

import jakarta.ws.rs.Produces;
import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.Provider;

import org.jboss.resteasy.annotations.providers.multipart.XopWithMultipartRelated;
import org.jboss.resteasy.plugins.providers.ProviderHelper;
import org.jboss.resteasy.spi.AsyncMessageBodyWriter;
import org.jboss.resteasy.spi.AsyncOutputStream;
import org.jboss.resteasy.spi.util.FindAnnotation;

/**
 * This provider is for writing xop packages packed as multipart/related. For
 * more information see {@link XopWithMultipartRelated}.
 *
 * @author Attila Kiraly
 * @version $Revision: 1 $
 */
@Provider
@Produces("multipart/related")
public class XopWithMultipartRelatedWriter extends
        AbstractMultipartRelatedWriter implements AsyncMessageBodyWriter<Object> {

    public long getSize(Object t, Class<?> type, Type genericType,
            Annotation[] annotations, MediaType mediaType) {
        return -1;
    }

    public boolean isWriteable(Class<?> type, Type genericType,
            Annotation[] annotations, MediaType mediaType) {
        return FindAnnotation.findAnnotation(annotations,
                XopWithMultipartRelated.class) != null
                || type.isAnnotationPresent(XopWithMultipartRelated.class);
    }

    public void writeTo(Object t, Class<?> type, Type genericType,
            Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, Object> httpHeaders,
            OutputStream entityStream) throws IOException,
            WebApplicationException {

        MultipartRelatedOutput xopPackage = new MultipartRelatedOutput();

        XopWithMultipartRelatedJAXBProvider xopWithMultipartRelatedJAXBProvider = new XopWithMultipartRelatedJAXBProvider(
                workers);
        xopWithMultipartRelatedJAXBProvider.writeTo(t, type, genericType,
                annotations, mediaType, httpHeaders, xopPackage);
        writeRelated(xopPackage, mediaType, httpHeaders, entityStream, annotations);
    }

    @Override
    public CompletionStage<Void> asyncWriteTo(Object t, Class<?> type, Type genericType, Annotation[] annotations,
            MediaType mediaType,
            MultivaluedMap<String, Object> httpHeaders, AsyncOutputStream entityStream) {
        MultipartRelatedOutput xopPackage = new MultipartRelatedOutput();

        XopWithMultipartRelatedJAXBProvider xopWithMultipartRelatedJAXBProvider = new XopWithMultipartRelatedJAXBProvider(
                workers);
        try {
            xopWithMultipartRelatedJAXBProvider.writeTo(t, type, genericType,
                    annotations, mediaType, httpHeaders, xopPackage);
        } catch (IOException e) {
            return ProviderHelper.completedException(e);
        }
        return asyncWriteRelated(xopPackage, mediaType, httpHeaders, entityStream, annotations);
    }
}
