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 *  http://www.apache.org/licenses/LICENSE-2.0
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package io.questdb.cutlass.pgwire;

import io.questdb.DynamicUsernamePasswordMatcher;
import io.questdb.ServerConfiguration;
import io.questdb.cairo.sql.NetworkSqlExecutionCircuitBreaker;
import io.questdb.cutlass.auth.SocketAuthenticator;
import io.questdb.cutlass.auth.UsernamePasswordMatcher;
import org.jetbrains.annotations.Nullable;

public final class DefaultPgWireAuthenticatorFactory implements PgWireAuthenticatorFactory {
    public static final PgWireAuthenticatorFactory INSTANCE = new DefaultPgWireAuthenticatorFactory(null);
    private final ServerConfiguration serverConfiguration;

    public DefaultPgWireAuthenticatorFactory(@Nullable ServerConfiguration serverConfiguration) {
        this.serverConfiguration = serverConfiguration;
    }

    @Override
    public SocketAuthenticator getPgWireAuthenticator(
            PGWireConfiguration configuration,
            NetworkSqlExecutionCircuitBreaker circuitBreaker,
            CircuitBreakerRegistry registry,
            OptionsListener optionsListener
    ) {
        // Normally, all authenticators instances share native buffers for static passwords as the buffers are allocated
        // and owned by FactoryProviders.
        // But the Default implementation does not use FactoryProviders at all. There is a single static field INSTANCE, see above.
        // Thus, there is nothing what could own and close the buffers. So we allocate buffers for each authenticator
        // and the authenticator will be responsible for closing them.
        final UsernamePasswordMatcher matcher = new DynamicUsernamePasswordMatcher(serverConfiguration, configuration);

        return new CleartextPasswordPgWireAuthenticator(
                configuration,
                circuitBreaker,
                registry,
                optionsListener,
                matcher,
                true
        );
    }
}