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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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package org.apache.james.rrt.api;

import java.util.stream.Stream;

import org.apache.james.core.MailAddress;
import org.apache.james.core.Username;
import org.reactivestreams.Publisher;

public interface CanSendFrom {

    /**
     * Indicate if the connectedUser can send a mail using the fromUser in the from clause.
     */
    boolean userCanSendFrom(Username connectedUser, Username fromUser);

    Publisher<Boolean> userCanSendFromReactive(Username connectedUser, Username fromUser);

    /**
     * For a given user, return all the addresses he can use in the from clause of an email.
     */
    Stream<MailAddress> allValidFromAddressesForUser(Username user) throws RecipientRewriteTable.ErrorMappingException, RecipientRewriteTableException;

}
