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/*
 * Copyright (c) 2010-2017, KolibriFX AS. Licensed under the Apache License, version 2.0.
 */

package com.kolibrifx.plovercrest.server.streams;

import java.util.Collection;
import java.util.Collections;
import com.kolibrifx.plovercrest.client.DefaultSerializerContext;
import com.kolibrifx.plovercrest.client.DefaultTableSerializerFactory;
import com.kolibrifx.plovercrest.client.TableSerializerFactory;
import com.kolibrifx.plovercrest.server.PlovercrestEngine;
import com.kolibrifx.plovercrest.server.internal.streams.TableStreamProvider;

/**
 * Builds a {@link StreamEngine} backed by the given {@link PlovercrestEngine}, plus any additional
 * stream providers passed to {@link #extraProviders(Collection)}.
 */
public class PlovercrestStreamEngineBuilder {
    private final PlovercrestEngine engine;
    private TableSerializerFactory serializerFactory =
            new DefaultTableSerializerFactory(new DefaultSerializerContext());
    private Collection extraProviders = Collections.emptySet();

    public PlovercrestStreamEngineBuilder(final PlovercrestEngine engine) {
        this.engine = engine;
    }

    public PlovercrestStreamEngineBuilder serializerFactory(final TableSerializerFactory serializerFactory) {
        this.serializerFactory = serializerFactory;
        return this;
    }

    public PlovercrestStreamEngineBuilder extraProviders(final Collection extraProviders) {
        this.extraProviders = extraProviders;
        return this;
    }

    public StreamEngine build() {
        final PluggableStreamEngine streamEngine = new PluggableStreamEngine();
        streamEngine.addProvider(new TableStreamProvider(engine, serializerFactory));
        for (final StreamProvider provider : extraProviders) {
            streamEngine.addProvider(provider);
        }
        return streamEngine;
    }
}