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 * Licensed to the Apache Software Foundation (ASF) under one   *
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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
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 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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package org.apache.james.modules.protocols;

import org.apache.james.lifecycle.api.Startable;
import org.apache.james.server.core.configuration.ConfigurationProvider;
import org.apache.james.smtpserver.SendMailHandler;
import org.apache.james.smtpserver.netty.OioSMTPServerFactory;
import org.apache.james.smtpserver.netty.SMTPServerFactory;
import org.apache.james.utils.GuiceProbe;
import org.apache.james.utils.InitialisationOperation;

import com.google.inject.AbstractModule;
import com.google.inject.Inject;
import com.google.inject.Scopes;
import com.google.inject.Singleton;
import com.google.inject.multibindings.Multibinder;

public class SMTPServerModule extends AbstractModule {

    @Override
    protected void configure() {
        install(new JSPFModule());
        bind(SMTPServerFactory.class).in(Scopes.SINGLETON);
        bind(OioSMTPServerFactory.class).in(Scopes.SINGLETON);

        Multibinder.newSetBinder(binder(), InitialisationOperation.class).addBinding().to(SMTPModuleInitialisationOperation.class);
        Multibinder.newSetBinder(binder(), GuiceProbe.class).addBinding().to(SmtpGuiceProbe.class);
    }

    @Singleton
    public static class SMTPModuleInitialisationOperation implements InitialisationOperation {

        private final ConfigurationProvider configurationProvider;
        private final SMTPServerFactory smtpServerFactory;
        private final SendMailHandler sendMailHandler;

        @Inject
        public SMTPModuleInitialisationOperation(ConfigurationProvider configurationProvider,
                                                 SMTPServerFactory smtpServerFactory,
                                                 SendMailHandler sendMailHandler) {
            this.configurationProvider = configurationProvider;
            this.smtpServerFactory = smtpServerFactory;
            this.sendMailHandler = sendMailHandler;
        }

        @Override
        public void initModule() throws Exception {
                smtpServerFactory.configure(configurationProvider.getConfiguration("smtpserver"));
                smtpServerFactory.init();
                sendMailHandler.init(null);
        }

        @Override
        public Class<? extends Startable> forClass() {
            return SMTPServerFactory.class;
        }
    }

}
