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// Portions Copyright [2020-2021] Payara Foundation and/or affiliates

package com.sun.enterprise.v3.admin.commands;


import java.util.List;

import com.sun.enterprise.config.serverbeans.Config;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.ThreadPools;
import org.glassfish.api.ActionReport;
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.CommandLock;
import org.glassfish.config.support.CommandTarget;
import org.glassfish.config.support.TargetType;
import jakarta.inject.Inject;


import org.jvnet.hk2.annotations.Service;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.hk2.api.ServiceLocator;

import org.glassfish.grizzly.config.dom.ThreadPool;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.enterprise.util.StringUtils;
import java.util.HashSet;
import java.util.Set;
import org.glassfish.api.admin.*;
import org.glassfish.hk2.api.ServiceHandle;

/**
 * List Thread Pools command
 */
@Service(name = "list-threadpools")
@PerLookup
@CommandLock(CommandLock.LockType.NONE)
@I18n("list.threadpools")
@TargetType({CommandTarget.DAS, CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER, CommandTarget.CONFIG,
    CommandTarget.CLUSTERED_INSTANCE})
@RestEndpoints({
    @RestEndpoint(configBean=ThreadPools.class,
        opType=RestEndpoint.OpType.GET, 
        path="list-threadpools", 
        description="list-threadpools")
})
public class ListThreadpools implements AdminCommand, AdminCommandSecurity.Preauthorization {

    @Inject
    Domain domain;

    @Param(name = "target", primary = true, optional=true)
    String target;

    @Inject
    ServiceLocator habitat;

    final private static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(ListThreadpools.class);

    private ThreadPools threadPools;
    
    @Override
    public boolean preAuthorization(AdminCommandContext context) {
        if (StringUtils.ok(target)) {
            Config config = habitat.getService(Config.class, target);
            if (config == null) { //allow target to include or not include the -config part of the name
                config = habitat.getService(Config.class, target + "-config");
            }
            if (config != null) {
                threadPools  = config.getThreadPools();
            }
        }
        return true;
    }
    
    /**
     * Executes the command
     *
     * @param context information
     */
    @Override
    public void execute(AdminCommandContext context) {
        final ActionReport report = context.getActionReport();
        if (!StringUtils.ok(target)) {
            List> pools = habitat.getAllServiceHandles(ThreadPool.class);
            Set poolNames = new HashSet<>();
            for (ServiceHandle poolHandle : pools) {
                poolNames.add(poolHandle.getService().getName());
            }
            for (String poolName : poolNames) {
                final ActionReport.MessagePart part = report.getTopMessagePart().addChild();
                part.setMessage(poolName);
            }
            return;
        }
        if (threadPools == null) {
            report.setMessage(localStrings.getLocalString("list.thread.pools.failed", "List Thread Pools failed because of: target " + target + " not found"));
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
        }
        try {
            List poolList = threadPools.getThreadPool();
            for (ThreadPool pool : poolList) {
                final ActionReport.MessagePart part = report.getTopMessagePart()
                        .addChild();
                part.setMessage(pool.getName());
            }
            report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
        } catch (Exception e) {
            String str = e.getMessage();
            report.setMessage(localStrings.getLocalString("list.thread.pools.failed", "List Thread Pools failed because of: " + str));
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setFailureCause(e);
        }
    }
}





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