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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2015 Oracle 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://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle 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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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

// Portions Copyright [2016-2021] [Payara Foundation and/or affiliates]

package org.glassfish.admin.rest.resources;

import com.sun.enterprise.util.LocalStringManagerImpl;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URLDecoder;
import org.glassfish.admin.rest.utils.ResourceUtil;
import org.glassfish.admin.rest.provider.MethodMetaData;
import org.glassfish.admin.rest.results.ActionReportResult;
import org.glassfish.admin.rest.results.OptionsResult;
import org.glassfish.admin.rest.utils.xml.RestActionReporter;
import org.glassfish.api.ActionReport;
import org.glassfish.api.admin.ParameterMap;

import jakarta.ws.rs.OPTIONS;
import jakarta.ws.rs.Produces;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
import jakarta.json.JsonException;
import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.core.PathSegment;
import jakarta.ws.rs.core.Response;
import jakarta.ws.rs.core.Response.Status;
import jakarta.ws.rs.core.UriInfo;

import org.glassfish.jersey.media.sse.EventOutput;

import org.glassfish.admin.rest.Constants;
import org.glassfish.admin.rest.OptionsCapable;
import org.glassfish.admin.rest.composite.CompositeUtil;
import org.glassfish.admin.rest.composite.metadata.RestResourceMetadata;

/**
 * @author ludo
 */
public class TemplateExecCommand extends AbstractResource implements OptionsCapable {
    public static final LocalStringManagerImpl localStrings = new LocalStringManagerImpl(TemplateExecCommand.class);
    protected static final String ERROR = "error";
    protected static final String ERROR_STRING = "rest.request.parsing.error";
    protected static final String ERROR_DEFAULT_MESSAGE = "Unable to parse the input entity. Please check the syntax.";

    protected String resourceName;
    protected String commandName;
    protected String commandDisplayName;
    protected String commandMethod;
    protected String commandAction;
    protected boolean isLinkedToParent = false;

    public TemplateExecCommand(String resourceName, String commandName, String commandMethod, String commandAction,
                               String commandDisplayName,
                               boolean isLinkedToParent) {
        this.resourceName = resourceName;
        this.commandName = commandName;
        this.commandMethod = commandMethod;
        this.commandAction = commandAction;
        this.commandDisplayName = commandDisplayName;
        this.isLinkedToParent = isLinkedToParent;

    }

    @Override
    public UriInfo getUriInfo() {
        return uriInfo;
    }

    @Override
    public void setUriInfo(UriInfo uriInfo) {
        this.uriInfo = uriInfo;
    }

    @OPTIONS
    @Produces({
            MediaType.TEXT_HTML,
            MediaType.APPLICATION_JSON,
            MediaType.APPLICATION_XML})
    public ActionReportResult optionsLegacyFormat() {
        RestActionReporter ar = new RestActionReporter();
        ar.setExtraProperties(new Properties());
        ar.setActionDescription(commandDisplayName);

        OptionsResult optionsResult = new OptionsResult(resourceName);
        Map mmd = new HashMap();
        MethodMetaData methodMetaData = ResourceUtil.getMethodMetaData(commandName, getCommandParams(),
                locatorBridge.getRemoteLocator());

        optionsResult.putMethodMetaData(commandMethod, methodMetaData);
        mmd.put(commandMethod, methodMetaData);
        ResourceUtil.addMethodMetaData(ar, mmd);

        ActionReportResult ret = new ActionReportResult(ar, null, optionsResult);
        ret.setCommandDisplayName(commandDisplayName);
        return ret;
    }

    @OPTIONS
    @Produces(Constants.MEDIA_TYPE_JSON)
    public String options() throws JsonException {
        return new RestResourceMetadata(this).toJson().toString();
    }

    protected Response executeCommandAsSse(ParameterMap data) {
        EventOutput ec = ResourceUtil.runCommandWithSse(commandName, data, null, null);
        return Response.status(HttpURLConnection.HTTP_OK).entity(ec).build();
    }

    protected Response executeCommandLegacyFormat(ParameterMap data) {
        RestActionReporter actionReport = ResourceUtil.runCommand(commandName, data, getSubject());
        final ActionReport.ExitCode exitCode = actionReport.getActionExitCode();
        final int status = (exitCode == ActionReport.ExitCode.FAILURE) ?
                     HttpURLConnection.HTTP_INTERNAL_ERROR : HttpURLConnection.HTTP_OK;
        ActionReportResult option = optionsLegacyFormat();
        ActionReportResult results = new ActionReportResult(commandName, actionReport, option.getMetaData());
        results.getActionReport().getExtraProperties().putAll(option.getActionReport().getExtraProperties());
        results.setCommandDisplayName(commandDisplayName);

        if (exitCode == ActionReport.ExitCode.FAILURE) {
            results.setIsError(true);
            results.setErrorMessage(actionReport.getCombinedMessage());
        }
        return Response.status(status).entity(results).build();
    }

    protected CommandResult executeCommand(ParameterMap data) {
        RestActionReporter actionReport = ResourceUtil.runCommand(commandName, data, getSubject());
        ActionReport.ExitCode exitCode = actionReport.getActionExitCode();
        if (exitCode == ActionReport.ExitCode.FAILURE) {
            throw new WebApplicationException(Response.status(Status.INTERNAL_SERVER_ERROR)
                    .entity(actionReport.getMessage())
                    .build());
        }

        CommandResult cr = CompositeUtil.instance().getModel(CommandResult.class);
        cr.setMessage(actionReport.getMessage());
        cr.setProperties(actionReport.getTopMessagePart().getProps());
        cr.setExtraProperties(getExtraProperties(actionReport));
        return cr;
    }

    private Map getExtraProperties(RestActionReporter actionReport) {
        Properties props = actionReport.getExtraProperties();
        Map map = new HashMap();

        for (Map.Entry entry : props.entrySet()) {
            map.put(entry.getKey().toString(), entry.getValue());
        }

        return map;
    }

    /*override it
     *
     *
     */

    protected HashMap getCommandParams() {
        return null;
    }

    protected void processCommandParams(ParameterMap data) {
        HashMap commandParams = getCommandParams();
        if (commandParams != null) {
            ResourceUtil.resolveParamValues(commandParams, uriInfo);
            for (Map.Entry entry : commandParams.entrySet()) {
                data.add(entry.getKey(), entry.getValue());
            }
        }
    }

    protected void addQueryString(MultivaluedMap qs, ParameterMap data) {
        for (Map.Entry> entry : qs.entrySet()) {
            String key = entry.getKey();
            for (String value : entry.getValue()) {
                try {
                    data.add(key, URLDecoder.decode(value, "UTF-8"));
                } catch (UnsupportedEncodingException ex) {
                    throw new RuntimeException(ex);
                }
            }
        }
    }

    protected void adjustParameters(ParameterMap data) {
        if (data != null) {
            if (!(data.containsKey("DEFAULT"))) {
                boolean isRenamed = renameParameter(data, "name", "DEFAULT");
                if (!isRenamed) {
                    renameParameter(data, "id", "DEFAULT");
                }
            }
            data.remove("jsoncallback"); //these 2 are for JSONP padding, not needed for CLI execs
            data.remove("_");
        }
    }

    protected boolean renameParameter(ParameterMap data, String parameterToRename, String newName) {

        if ((data.containsKey(parameterToRename))) {
            List value = data.get(parameterToRename);
            data.remove(parameterToRename);
            data.set(newName, value);
            return true;
        }
        return false;
    }

    protected void purgeEmptyEntries(ParameterMap data) {

        HashSet keyToRemove = new HashSet();
        Set>> entries = data.entrySet();
        for (Entry> entry : entries) {
            if ((entry.getValue() == null) || (entry.getValue().isEmpty())) {
                keyToRemove.add(entry.getKey());

            }
        }
        if ("true".equals(data.getOne("__remove_empty_entries__"))) {
            data.remove("__remove_empty_entries__");
            //now remove list of 1 element which is "" only
            Set>> entries2 = data.entrySet();
            //temp list to avoid Concurrent Modification Exception
            for (Entry> entry : entries2) {
                if (entry.getValue().size() == 1) {
                    if (entry.getValue().get(0).equals("")) {
                        keyToRemove.add(entry.getKey());
                    }
                }
            }
        }
        for (String k : keyToRemove) {
            data.remove(k);

        }
    }

    protected String getParent(UriInfo uriInfo) {
        List segments = uriInfo.getPathSegments(true);
        return segments.get(segments.size()-2).getPath();
    }
}