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package org.glassfish.jersey.message.internal;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import javax.ws.rs.RuntimeType;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;

import javax.inject.Singleton;

import org.glassfish.jersey.internal.ServiceFinderBinder;
import org.glassfish.jersey.internal.inject.AbstractBinder;
import org.glassfish.jersey.spi.HeaderDelegateProvider;

/**
 * Binding definitions for the default set of message related providers (readers,
 * writers, header delegates).
 *
 * @author Marek Potociar (marek.potociar at oracle.com)
 * @author Libor Kramolis (libor.kramolis at oracle.com)
 */
public final class MessagingBinders {

    /**
     * Prevents instantiation.
     */
    private MessagingBinders() {
    }

    /**
     * Message body providers injection binder.
     */
    public static class MessageBodyProviders extends AbstractBinder {

        private final Map applicationProperties;

        private final RuntimeType runtimeType;

        /**
         * Create new message body providers injection binder.
         *
         * @param applicationProperties map containing application properties. May be {@code null}.
         * @param runtimeType           runtime (client or server) where the binder is used.
         */
        public MessageBodyProviders(final Map applicationProperties, final RuntimeType runtimeType) {
            this.applicationProperties = applicationProperties;
            this.runtimeType = runtimeType;
        }

        @Override
        protected void configure() {

            // Message body providers (both readers & writers)
            bindSingletonWorker(ByteArrayProvider.class);
            bindSingletonWorker(DataSourceProvider.class);
            bindSingletonWorker(FileProvider.class);
            bindSingletonWorker(FormMultivaluedMapProvider.class);
            bindSingletonWorker(FormProvider.class);
            bindSingletonWorker(InputStreamProvider.class);
            bindSingletonWorker(BasicTypesMessageProvider.class);
            bindSingletonWorker(ReaderProvider.class);
            bindSingletonWorker(RenderedImageProvider.class);
            bindSingletonWorker(StringMessageProvider.class);

            // Message body readers
            bind(SourceProvider.StreamSourceReader.class).to(MessageBodyReader.class).in(Singleton.class);
            bind(SourceProvider.SaxSourceReader.class).to(MessageBodyReader.class).in(Singleton.class);
            bind(SourceProvider.DomSourceReader.class).to(MessageBodyReader.class).in(Singleton.class);
            /*
             * TODO: com.sun.jersey.core.impl.provider.entity.EntityHolderReader
             */

            // Message body writers
            bind(StreamingOutputProvider.class).to(MessageBodyWriter.class).in(Singleton.class);
            bind(SourceProvider.SourceWriter.class).to(MessageBodyWriter.class).in(Singleton.class);

            // Header Delegate Providers registered in META-INF.services
            install(new ServiceFinderBinder<>(HeaderDelegateProvider.class, applicationProperties, runtimeType));
        }

        private  void bindSingletonWorker(final Class worker) {
            bind(worker).to(MessageBodyReader.class).to(MessageBodyWriter.class).in(Singleton.class);
        }
    }

    /**
     * Header delegate provider injection binder.
     */
    public static class HeaderDelegateProviders extends AbstractBinder {

        private final Set providers;

        public HeaderDelegateProviders() {
            Set providers = new HashSet<>();
            providers.add(new CacheControlProvider());
            providers.add(new CookieProvider());
            providers.add(new DateProvider());
            providers.add(new EntityTagProvider());
            providers.add(new LinkProvider());
            providers.add(new LocaleProvider());
            providers.add(new MediaTypeProvider());
            providers.add(new NewCookieProvider());
            providers.add(new StringHeaderProvider());
            providers.add(new UriProvider());
            this.providers = providers;
        }

        @Override
        protected void configure() {
            providers.forEach(provider -> bind(provider).to(HeaderDelegateProvider.class));
        }

        /**
         * Returns all {@link HeaderDelegateProvider} register internally by Jersey.
         *
         * @return all internally registered {@link HeaderDelegateProvider}.
         */
        public Set getHeaderDelegateProviders() {
            return providers;
        }
    }
}