package io.dropwizard.lifecycle;

import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;

import java.util.Arrays;
import java.util.EventListener;
import java.util.List;
import java.util.stream.Collectors;

public interface ServerLifecycleListener extends EventListener {

    void serverStarted(Server server);

    
Return the local port of the first ServerConnector in the provided Server instance. 
Params:
server – Server instance to use
Returns:
First local port of the server instance/**
     * Return the local port of the first {@link ServerConnector} in the
     * provided {@link Server} instance.
     *
     * @param server Server instance to use
     * @return First local port of the server instance
     */
    default int getLocalPort(Server server) {
        return ((ServerConnector) server.getConnectors()[0]).getLocalPort();
    }

    
Return the local port of the last ServerConnector in the provided Server instance. This may be the same value as returned by getLocalPort(Server) if using the "simple" server configuration. 
Params:
server – Server instance to use
Returns:
Last local port or the server instance/**
     * Return the local port of the last {@link ServerConnector} in the
     * provided {@link Server} instance. This may be the same value as returned
     * by {@link #getLocalPort(Server)} if using the "simple" server configuration.
     *
     * @param server Server instance to use
     * @return Last local port or the server instance
     */
    default int getAdminPort(Server server) {
        final Connector[] connectors = server.getConnectors();
        return ((ServerConnector) connectors[connectors.length - 1]).getLocalPort();
    }

    
Return the ports mapped to the protocols each the ServerConnectors in the provided Server instance. 
Params:
server – Server instance to use
Returns:
Map of local ports to protocols for the server instance
Since:
2.0/**
     * Return the ports mapped to the protocols each the {@link ServerConnector}s in the
     * provided {@link Server} instance.
     *
     * @param server Server instance to use
     * @return Map of local ports to protocols for the server instance
     * @since 2.0
     */
    default List<PortDescriptor> getPortDescriptorList(Server server) {
        final Connector[] connectors = server.getConnectors();
        return Arrays.stream(connectors)
            .map(conn -> conn.getProtocols()
                .stream()
                .map(protocol -> new PortDescriptor(protocol, ((ServerConnector) conn).getLocalPort(), conn.getName(), ((ServerConnector) conn).getHost()))
                .collect(Collectors.toList()))
            .flatMap(List::stream)
            .collect(Collectors.toList());
    }
}