package io.apicurio.registry.rest.providers;

import io.apicurio.registry.content.ContentHandle;
import io.apicurio.registry.utils.IoUtil;
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.MessageBodyWriter;
import jakarta.ws.rs.ext.Provider;

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

@Provider
@Produces(MediaType.WILDCARD)
public class ContentHandleMessageBodyWriter implements MessageBodyWriter<ContentHandle> {
    @Override
    public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations,
            MediaType mediaType) {
        return ContentHandle.class.isAssignableFrom(type);
    }

    @Override
    public void writeTo(ContentHandle content, Class<?> type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
            throws IOException, WebApplicationException {
        try (InputStream stream = content.stream()) {
            IoUtil.copy(stream, entityStream);
        }
    }
}
