/*
 * Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.messaging.bridge.admin.bridgemgr;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Properties;
import java.util.Hashtable;

import com.sun.messaging.jmq.admin.bkrutil.BrokerAdminException;
import com.sun.messaging.jmq.admin.apps.broker.CommonCmdRunnerUtil;
import com.sun.messaging.jmq.admin.apps.broker.CommonCmdException;
import com.sun.messaging.jmq.admin.event.AdminEventListener;
import com.sun.messaging.jmq.admin.event.AdminEvent;
import com.sun.messaging.bridge.api.BridgeCmdSharedReplyData;
import com.sun.messaging.bridge.admin.util.AdminMessageType;
import com.sun.messaging.bridge.admin.bridgemgr.resources.BridgeAdminResources;

/**
 * This class contains the logic to execute the user commands specified in the BridgeMgrProperties object. It has one
 * public entry point which is the runCommands() method. It is expected to display to the user if the command execution
 * was successful or not.
 *
 * @see ObjMgr
 *
 */
public class CmdRunner implements BridgeMgrOptions, AdminEventListener {
    private BridgeAdminResources ar = Globals.getBridgeAdminResources();
    private BridgeMgrProperties bridgeMgrProps;

    /**
     * Constructor
     */
    public CmdRunner(BridgeMgrProperties props) {
        this.bridgeMgrProps = props;
    }

    /*
     * Run/execute the user commands specified in the BridgeMgrProperties object.
     */
    public int runCommand() {
        int exitcode = 0;

        /*
         * Determine type of command and invoke the relevant run method to execute the command.
         *
         */
        String cmd = bridgeMgrProps.getCommand();
        if (cmd.equals(Cmd.LIST)) {
            exitcode = runCommand(bridgeMgrProps);
        } else if (cmd.equals(Cmd.PAUSE)) {
            exitcode = runCommand(bridgeMgrProps);
        } else if (cmd.equals(Cmd.RESUME)) {
            exitcode = runCommand(bridgeMgrProps);
        } else if (cmd.equals(Cmd.START)) {
            exitcode = runCommand(bridgeMgrProps);
        } else if (cmd.equals(Cmd.STOP)) {
            exitcode = runCommand(bridgeMgrProps);
        } else if (bridgeMgrProps.debugModeSet() && cmd.equals(Cmd.DEBUG)) {
            exitcode = runCommand(bridgeMgrProps);
        }
        return (exitcode);
    }

    private int runCommand(BridgeMgrProperties bridgeMgrProps) {
        BridgeAdmin broker;
        String input = null;
        String yes, yesShort, no, noShort;

        yes = ar.getString(ar.Q_RESPONSE_YES);
        yesShort = ar.getString(ar.Q_RESPONSE_YES_SHORT);
        no = ar.getString(ar.Q_RESPONSE_NO);
        noShort = ar.getString(ar.Q_RESPONSE_NO_SHORT);

        broker = init();

        boolean force = bridgeMgrProps.forceModeSet();

        // Check for the target argument
        String cmd = bridgeMgrProps.getCommand();
        String commandArg = bridgeMgrProps.getCommandArg();
        String bn = bridgeMgrProps.getBridgeName();
        String bt = bridgeMgrProps.getBridgeType();
        String ln = bridgeMgrProps.getLinkName();
        boolean debugMode = bridgeMgrProps.debugModeSet();

        if (debugMode && cmd.equals(Cmd.DEBUG)) {
            if (broker == null) {
                Globals.stdErrPrintln("Problem connecting to the broker");
                return (1);
            }
            if (!force) {
                broker = (BridgeAdmin) CommonCmdRunnerUtil.promptForAuthentication(broker);
            }
            String target = bridgeMgrProps.getTargetName();
            Properties optionalProps = bridgeMgrProps.getTargetAttrs();

            Globals.stdOutPrintln("Sending the following DEBUG message:");
            if (target != null) {
                BridgeMgrPrinter bmp = new BridgeMgrPrinter(2, 4, null, BridgeMgrPrinter.LEFT, false);
                String[] row = new String[2];
                row[0] = commandArg;
                row[1] = target;
                bmp.add(row);
                bmp.println();
            } else {
                BridgeMgrPrinter bmp = new BridgeMgrPrinter(1, 4, null, BridgeMgrPrinter.LEFT, false);
                String[] row = new String[1];
                row[0] = commandArg;
                bmp.add(row);
                bmp.println();
            }
            if ((optionalProps != null) && (optionalProps.size() > 0)) {
                Globals.stdOutPrintln("Optional properties:");
                CommonCmdRunnerUtil.printAttrs(optionalProps, true, new BridgeMgrPrinter());
            }

            Globals.stdOutPrintln("To the broker specified by:");
            printBrokerInfo(broker);
            try {
                connectToBroker(broker);
                broker.sendDebugMessage(commandArg, target, optionalProps);
                Hashtable debugHash = broker.receiveDebugReplyMessage();
                if ((debugHash != null) && (debugHash.size() > 0)) {
                    Globals.stdOutPrintln("Data received back from broker:");
                    CommonCmdRunnerUtil.printDebugHash(debugHash);
                } else {
                    Globals.stdOutPrintln("No additional data received back from broker.\n");
                }
                Globals.stdOutPrintln("DEBUG message sent successfully.");
            } catch (BrokerAdminException bae) {
                handleBrokerAdminException(bae);
                return (1);
            }
        } else if (CmdArg.BRIDGE.equals(commandArg)) {

            if (broker == null) {
                Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_FAIL, getLocalizedCmd(cmd)));
                return (1);
            }

            if (!force) {
                broker = (BridgeAdmin) CommonCmdRunnerUtil.promptForAuthentication(broker);
            }

            boolean single = false;
            boolean startRet = true;

            if ((bn == null) || (bn.trim().equals(""))) {
                if ((bt == null) || (bt.trim().equals(""))) {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_ALL_BRIDGES_CMD_ON_BKR, getLocalizedCmd(cmd)));
                } else {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_ALL_TYPE_BRIDGES_CMD, getLocalizedCmd(cmd)));
                    printBridgeInfo(false);

                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_SPECIFY_BKR));
                }

            } else {
                Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD, getLocalizedCmd(cmd)));
                printBridgeInfo();
                Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_SPECIFY_BKR));
                single = true;
            }

            printBrokerInfo(broker);

            try {
                connectToBroker(broker);

            } catch (BrokerAdminException bae) {
                handleBrokerAdminException(bae);
                if (single) {
                    Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_FAIL, getLocalizedCmd(cmd)));
                } else {
                    Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_BRIDGES_CMD_FAIL, getLocalizedCmd(cmd)));
                }
                return (1);
            }

            if (cmd.equals(Cmd.LIST)) {
                force = true;
            }
            if (!force) {
                input = getUserInput(ar.getString(ar.Q_BRIDGE_CMD_OK, getLocalizedCmd(cmd)), noShort);
                Globals.stdOutPrintln("");
            }

            if (yesShort.equalsIgnoreCase(input) || yes.equalsIgnoreCase(input) || force) {
                try {
                    if (cmd.equals(Cmd.LIST)) {
                        broker.sendCommandMessage(cmd, bn, bt, null, AdminMessageType.Type.LIST, "LIST", BridgeMgrStatusEvent.Type.LIST,
                                AdminMessageType.Type.LIST_REPLY, "LIST_REPLY", debugMode);
                        ArrayList<BridgeCmdSharedReplyData> data = broker.receiveListReplyMessage();
                        Iterator<BridgeCmdSharedReplyData> itr = data.iterator();
                        BridgeMgrPrinter bcp = null;
                        BridgeCmdSharedReplyData reply = null;
                        while (itr.hasNext()) {
                            reply = itr.next();
                            bcp = new BridgeMgrPrinter();
                            bcp.copy(reply);
                            bcp.println();
                            Globals.stdOutPrintln("");
                        }
                    } else if (cmd.equals(Cmd.START)) {
                        broker.sendCommandMessage(cmd, bn, bt, null, AdminMessageType.Type.START, "START", BridgeMgrStatusEvent.Type.START,
                                AdminMessageType.Type.START_REPLY, "START_REPLY");
                        startRet = broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.START_REPLY, "START_REPLY");
                    } else if (cmd.equals(Cmd.STOP)) {
                        broker.sendCommandMessage(cmd, bn, bt, null, AdminMessageType.Type.STOP, "STOP", BridgeMgrStatusEvent.Type.STOP,
                                AdminMessageType.Type.STOP_REPLY, "STOP_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.STOP_REPLY, "STOP_REPLY");
                    } else if (cmd.equals(Cmd.RESUME)) {
                        broker.sendCommandMessage(cmd, bn, bt, null, AdminMessageType.Type.RESUME, "RESUME", BridgeMgrStatusEvent.Type.RESUME,
                                AdminMessageType.Type.RESUME_REPLY, "RESUME_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.RESUME_REPLY, "RESUME_REPLY");
                    } else if (cmd.equals(Cmd.PAUSE)) {
                        broker.sendCommandMessage(cmd, bn, bt, null, AdminMessageType.Type.PAUSE, "PAUSE", BridgeMgrStatusEvent.Type.PAUSE,
                                AdminMessageType.Type.PAUSE_REPLY, "PAUSE_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.PAUSE_REPLY, "PAUSE_REPLY");
                    } else {
                        return 1;
                    }

                    if (single) {
                        if (cmd.equals(Cmd.START) && !startRet) {
                            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGE_ASYNC_STARTED));
                        } else {
                            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_SUC, getLocalizedCmd(cmd)));
                        }
                    } else {
                        if (cmd.equals(Cmd.START) && !startRet) {
                            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGES_ASYNC_STARTED));
                        } else {
                            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGES_CMD_SUC, getLocalizedCmd(cmd)));
                        }
                    }

                } catch (BrokerAdminException bae) {
                    handleBrokerAdminException(bae);
                    if (single) {
                        Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_FAIL, getLocalizedCmd(cmd)));
                    } else {
                        Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_BRIDGES_CMD_FAIL, getLocalizedCmd(cmd)));
                    }
                    return (1);
                }

            } else if (noShort.equalsIgnoreCase(input) || no.equalsIgnoreCase(input)) {
                if (single) {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_NOOP, getLocalizedCmd(cmd)));
                } else {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGES_CMD_NOOP, getLocalizedCmd(cmd)));
                }
                return (0);

            } else {
                Globals.stdOutPrintln(ar.getString(ar.I_UNRECOGNIZED_RES, input));
                Globals.stdOutPrintln("");
                if (single) {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGE_CMD_NOOP, getLocalizedCmd(cmd)));
                } else {
                    Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_BRIDGES_CMD_NOOP, getLocalizedCmd(cmd)));
                }
                return (1);
            }

        } else if (CmdArg.LINK.equals(commandArg)) {

            if (broker == null) {
                Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_FAIL, getLocalizedCmd(cmd)));
                return (1);
            }

            if (!force) {
                broker = (BridgeAdmin) CommonCmdRunnerUtil.promptForAuthentication(broker);
            }

            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_LINK_CMD, getLocalizedCmd(cmd)));
            printLinkInfo();

            Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_SPECIFY_BKR));
            printBrokerInfo(broker);

            try {
                connectToBroker(broker);

            } catch (BrokerAdminException bae) {
                handleBrokerAdminException(bae);
                Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_FAIL, getLocalizedCmd(cmd)));
                return (1);
            }

            if (cmd.equals(Cmd.LIST)) {
                force = true;
            }
            if (!force) {
                input = getUserInput(ar.getString(ar.Q_LINK_CMD_OK, getLocalizedCmd(cmd)), noShort);
                Globals.stdOutPrintln("");
            }

            boolean startRet = true;

            if (yesShort.equalsIgnoreCase(input) || yes.equalsIgnoreCase(input) || force) {
                try {
                    if (cmd.equals(Cmd.LIST)) {
                        broker.sendCommandMessage(cmd, bn, bt, ln, AdminMessageType.Type.LIST, "LIST", BridgeMgrStatusEvent.Type.LIST,
                                AdminMessageType.Type.LIST_REPLY, "LIST_REPLY", debugMode);
                        ArrayList<BridgeCmdSharedReplyData> data = broker.receiveListReplyMessage();
                        Iterator<BridgeCmdSharedReplyData> itr = data.iterator();
                        BridgeMgrPrinter bcp = null;
                        BridgeCmdSharedReplyData reply = null;
                        while (itr.hasNext()) {
                            reply = itr.next();
                            bcp = new BridgeMgrPrinter();
                            bcp.copy(reply);
                            bcp.println();
                        }
                    } else if (cmd.equals(Cmd.START)) {
                        broker.sendCommandMessage(cmd, bn, bt, ln, AdminMessageType.Type.START, "START", BridgeMgrStatusEvent.Type.START,
                                AdminMessageType.Type.START_REPLY, "START_REPLY");
                        startRet = broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.START_REPLY, "START_REPLY");
                    } else if (cmd.equals(Cmd.STOP)) {
                        broker.sendCommandMessage(cmd, bn, bt, ln, AdminMessageType.Type.STOP, "STOP", BridgeMgrStatusEvent.Type.STOP,
                                AdminMessageType.Type.STOP_REPLY, "STOP_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.STOP_REPLY, "STOP_REPLY");
                    } else if (cmd.equals(Cmd.RESUME)) {
                        broker.sendCommandMessage(cmd, bn, bt, ln, AdminMessageType.Type.RESUME, "RESUME", BridgeMgrStatusEvent.Type.RESUME,
                                AdminMessageType.Type.RESUME_REPLY, "RESUME_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.RESUME_REPLY, "RESUME_REPLY");
                    } else if (cmd.equals(Cmd.PAUSE)) {
                        broker.sendCommandMessage(cmd, bn, bt, ln, AdminMessageType.Type.PAUSE, "PAUSE", BridgeMgrStatusEvent.Type.PAUSE,
                                AdminMessageType.Type.PAUSE_REPLY, "PAUSE_REPLY");
                        broker.receiveCommandReplyMessage(cmd, AdminMessageType.Type.PAUSE_REPLY, "PAUSE_REPLY");
                    } else {
                        return 1;
                    }

                    if (cmd.equals(Cmd.START) && !startRet) {
                        Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_LINK_ASYNC_STARTED));
                    } else {
                        Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_SUC, getLocalizedCmd(cmd)));
                    }

                } catch (BrokerAdminException bae) {
                    handleBrokerAdminException(bae);
                    Globals.stdErrPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_FAIL, getLocalizedCmd(cmd)));
                    return (1);
                }
            } else if (noShort.equalsIgnoreCase(input) || no.equalsIgnoreCase(input)) {
                Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_NOOP, getLocalizedCmd(cmd)));
                return (0);

            } else {
                Globals.stdOutPrintln(ar.getString(ar.I_UNRECOGNIZED_RES, input));
                Globals.stdOutPrintln("");
                Globals.stdOutPrintln(ar.getString(ar.I_BGMGR_LINK_CMD_NOOP, getLocalizedCmd(cmd)));
                return (1);
            }
        }

        broker.close();

        return (0);
    }

    private BridgeAdmin init() {
        BridgeAdmin broker;

        String brokerHostPort = bridgeMgrProps.getBrokerHostPort(), adminUser = bridgeMgrProps.getAdminUserId(), adminPasswd;
        int brokerPort = -1, numRetries = bridgeMgrProps.getNumRetries(), receiveTimeout = bridgeMgrProps.getReceiveTimeout();
        boolean useSSL = bridgeMgrProps.useSSLTransportSet();

        if (bridgeMgrProps.adminDebugModeSet()) {
            BridgeAdmin.setDebug(true);
        }

        try {
            adminPasswd = getPasswordFromFileOrCmdLine(bridgeMgrProps);

            broker = new BridgeAdmin(brokerHostPort, adminUser, adminPasswd, (receiveTimeout * 1000), useSSL);

            if (useSSL) {
                broker.setSSLTransportUsed(true);
            }
            if (numRetries > 0) {
                /*
                 * If the number of retries was specified, set it on the BridgeAdmin object.
                 */
                broker.setNumRetries(numRetries);
            }
        } catch (BridgeMgrException bce) {
            handleBridgeMgrException(bce);

            return (null);
        } catch (CommonCmdException cce) {
            handleBridgeMgrException(cce);

            return (null);
        } catch (BrokerAdminException bae) {
            handleBrokerAdminException(bae);

            return (null);
        }

        broker.setCheckShutdownReply(false);
        broker.addAdminEventListener(this);

        return (broker);
    }

    private void connectToBroker(BridgeAdmin broker) throws BrokerAdminException {
        broker.connect();
        broker.sendHelloMessage();
        broker.receiveHelloReplyMessage();
    }

    /*
     * Prints out the appropriate error message using Globals.stdErrPrintln()
     */
    private void handleBrokerAdminException(BrokerAdminException bae) {
        CommonCmdRunnerUtil.printBrokerAdminException(bae, Option.BROKER_HOSTPORT, bridgeMgrProps.debugModeSet());
    }

    private void handleBridgeMgrException(CommonCmdException bce) {
        CommonCmdRunnerUtil.printCommonCmdException(bce);
    }

    /**
     * Return user input. Return <defaultResponse> if no response ("") was given. Return null if an error occurred.
     */
    private String getUserInput(String question, String defaultResponse) {
        return CommonCmdRunnerUtil.getUserInput(question, defaultResponse);
    }

    private void printBrokerInfo(BridgeAdmin broker) {
        CommonCmdRunnerUtil.printBrokerInfo(broker, new BridgeMgrPrinter());
    }

    private void printBridgeInfo() {
        printBridgeInfo(true);
    }

    private void printBridgeInfo(boolean printName) {
        BridgeMgrPrinter bcp = new BridgeMgrPrinter(1, 4, "-");
        String[] row = new String[1];
        String value, title;

        if (printName) {
            title = ar.getString(ar.I_BGMGR_BRIDGE_NAME);
            value = bridgeMgrProps.getBridgeName();
        } else {
            title = ar.getString(ar.I_BGMGR_BRIDGE_TYPE);
            value = bridgeMgrProps.getBridgeType();
        }

        row[0] = title;
        bcp.addTitle(row);

        row[0] = value;
        bcp.add(row);

        bcp.println();
    }

    private void printLinkInfo() {
        BridgeMgrPrinter bcp = new BridgeMgrPrinter(2, 4, "-");
        String[] row = new String[2];
        String ln = bridgeMgrProps.getLinkName(), bn = bridgeMgrProps.getBridgeName();

        row[0] = ar.getString(ar.I_BGMGR_BRIDGE_NAME);
        row[1] = ar.getString(ar.I_BGMGR_LINK_NAME);
        bcp.addTitle(row);

        row[0] = bn;
        row[1] = ln;
        bcp.add(row);

        bcp.println();
    }

    /*
     * Get password from either the passfile or -p option. In some future release, the -p option will go away leaving the
     * passfile the only way to specify the password (besides prompting the user for it). -p has higher precendence compared
     * to -passfile.
     */
    private String getPasswordFromFileOrCmdLine(BridgeMgrProperties bridgeMgrProps) throws CommonCmdException {
        String passwd = bridgeMgrProps.getAdminPasswd(), passfile = bridgeMgrProps.getAdminPassfile();

        if (passwd != null) {
            return (passwd);
        }
        return CommonCmdRunnerUtil.getPasswordFromFile(passfile, PropName.PASSFILE_PASSWD, bridgeMgrProps);

    }

    @Override
    public void adminEventDispatched(AdminEvent e) {
        if (e instanceof BridgeMgrStatusEvent) {
            BridgeMgrStatusEvent be = (BridgeMgrStatusEvent) e;
            int type = be.getType();

            if (type == BridgeMgrStatusEvent.BROKER_BUSY) {
                CommonCmdRunnerUtil.printBrokerBusyEvent(be);
            }
        }
    }

    private String getLocalizedCmd(String cmd) {
        if (cmd.equals(Cmd.LIST)) {
            return ar.getString(ar.I_BGMGR_CMD_list);
        } else if (cmd.equals(Cmd.PAUSE)) {
            return ar.getString(ar.I_BGMGR_CMD_pause);
        } else if (cmd.equals(Cmd.RESUME)) {
            return ar.getString(ar.I_BGMGR_CMD_resume);
        } else if (cmd.equals(Cmd.START)) {
            return ar.getString(ar.I_BGMGR_CMD_start);
        } else if (cmd.equals(Cmd.STOP)) {
            return ar.getString(ar.I_BGMGR_CMD_stop);
        }
        return (cmd);
    }

}
