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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) [2017-2021] Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * recipient has the option to distribute your version of this file under
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package fish.payara.nucleus.microprofile.config.admin;

import java.util.Collection;
import java.util.logging.Logger;

import jakarta.inject.Inject;

import com.sun.enterprise.util.SystemPropertyConstants;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.APPLICATION;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.CLOUD;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.CLUSTER;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.CONFIG;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.DOMAIN;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.JDBC;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.JNDI;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.LDAP;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.MODULE;
import static fish.payara.nucleus.microprofile.config.admin.ConfigSourceConstants.SERVER;

import org.glassfish.api.Param;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.ExecuteOn;
import org.glassfish.api.admin.RestEndpoint;
import org.glassfish.api.admin.RestEndpoints;
import org.glassfish.config.support.TargetType;
import org.glassfish.hk2.api.PerLookup;
import org.jvnet.hk2.annotations.Service;

import fish.payara.nucleus.microprofile.config.source.ApplicationConfigSource;
import fish.payara.nucleus.microprofile.config.source.ClusterConfigSource;
import fish.payara.nucleus.microprofile.config.source.ConfigConfigSource;
import fish.payara.nucleus.microprofile.config.source.DomainConfigSource;
import fish.payara.nucleus.microprofile.config.source.JDBCConfigSource;
import fish.payara.nucleus.microprofile.config.source.JNDIConfigSource;
import fish.payara.nucleus.microprofile.config.source.ModuleConfigSource;
import fish.payara.nucleus.microprofile.config.source.ServerConfigSource;
import fish.payara.nucleus.microprofile.config.source.extension.ExtensionConfigSource;
import fish.payara.nucleus.microprofile.config.source.extension.ExtensionConfigSourceService;
import fish.payara.nucleus.microprofile.config.spi.MicroprofileConfigConfiguration;

/**
 * asAdmin command to get the value of a configuration property
 *
 * @since 4.1.2.173
 * @author Steve Millidge (Payara Foundation)
 */
@Service(name = "get-config-property") // the name of the service is the asadmin command name
@PerLookup // this means one instance is created every time the command is run
@ExecuteOn()
@TargetType()
@RestEndpoints({ // creates a REST endpoint needed for integration with the admin interface

    @RestEndpoint(configBean = MicroprofileConfigConfiguration.class,
            opType = RestEndpoint.OpType.POST, // must be POST as it is doing an update
            path = "get-config-property",
            description = "Gets a configuration property")
})
public class GetConfigProperty implements AdminCommand {

    @Param(optional = true, acceptableValues = "domain,config,server,application,module,cluster,jndi,jdbc,cloud,ldap", defaultValue = DOMAIN)
    String source;

    @Param(optional = true, defaultValue = SystemPropertyConstants.DAS_SERVER_NAME) // if no target is specified it will be the DAS
    String target;

    @Param
    String propertyName;

    @Param(optional = true)
    String sourceName;

    @Param(optional = true)
    String moduleName;

    @Inject
    private ExtensionConfigSourceService extensionService;

    @Override
    public void execute(AdminCommandContext context) {

        String result = null;
        switch (source) {
            case DOMAIN: {
                DomainConfigSource csource = new DomainConfigSource();
                result = csource.getValue(propertyName);
                break;
            }
            case CONFIG: {
                if (sourceName == null) {
                    context.getActionReport().failure(Logger.getLogger(SetConfigProperty.class.getName()), "sourceName is a required parameter and the name of the configuration if config is the source");
                } else {
                    ConfigConfigSource csource = new ConfigConfigSource(sourceName);
                    result = csource.getValue(propertyName);
                }
                break;
            }
            case SERVER: {
                if (sourceName == null) {
                    context.getActionReport().failure(Logger.getLogger(SetConfigProperty.class.getName()), "sourceName is a required parameter and the name of the server if server is the source");
                } else {
                    ServerConfigSource csource = new ServerConfigSource(sourceName);
                    result = csource.getValue(propertyName);
                }
                break;
            }
            case APPLICATION: {
                if (sourceName == null) {
                    context.getActionReport().failure(Logger.getLogger(SetConfigProperty.class.getName()), "sourceName is a required parameter and the name of the application if application is the source");
                } else {
                    ApplicationConfigSource csource = new ApplicationConfigSource(sourceName);
                    result = csource.getValue(propertyName);
                }
                break;
            }
            case MODULE: {
                if (sourceName == null || moduleName == null) {
                    context.getActionReport().failure(Logger.getLogger(SetConfigProperty.class.getName()), "sourceName and moduleName are required parameters if module is the source. The sourceName should be the name of the application where the module is deployed.");
                } else {
                    ModuleConfigSource csource = new ModuleConfigSource(sourceName, moduleName);
                    result = csource.getValue(propertyName);
                }
                break;
            }
            case CLUSTER: {
                ClusterConfigSource csource = new ClusterConfigSource();
                result = csource.getValue(propertyName);
                break;
            }
            case JNDI: {
                JNDIConfigSource csource = new JNDIConfigSource();
                result = csource.getValue(propertyName);
                break;
            }
            case JDBC: {
                JDBCConfigSource jdbcConfigSource = new JDBCConfigSource();
                result = jdbcConfigSource.getValue(propertyName);
                break;
            }
            case CLOUD: {
                Collection extensionSources = extensionService.getExtensionSources();
                for (ExtensionConfigSource extension : extensionSources) {
                    if (CLOUD.equals(extension.getSource()) 
                            && extension.getName().equals(sourceName)) {
                        result = extension.getValue(propertyName);
                    }
                }
                break;
            }
            case LDAP: {
                Collection extensionSources = extensionService.getExtensionSources();
                for (ExtensionConfigSource extension : extensionSources) {
                    if (LDAP.equals(extension.getSource())) {
                        result = extension.getValue(propertyName);
                    }
                }
                break;
            }
        }
        if (result != null) {
            context.getActionReport().setMessage(result);
        } else {
            context.getActionReport().failure(Logger.getLogger(GetConfigProperty.class.getName()), propertyName + " Not Found in source " + source);
        }
    }

}