/**
*    Copyright (C) 2008 10gen Inc.
*
*    This program is free software: you can redistribute it and/or  modify
*    it under the terms of the GNU Affero General Public License, version 3,
*    as published by the Free Software Foundation.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU Affero General Public License for more details.
*
*    You should have received a copy of the GNU Affero General Public License
*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
*    As a special exception, the copyright holders give permission to link the
*    code of portions of this program with the OpenSSL library under certain
*    conditions as described in each individual source file and distribute
*    linked combinations including the program with the OpenSSL library. You
*    must comply with the GNU Affero General Public License in all respects for
*    all of the code used other than as permitted herein. If you modify file(s)
*    with this exception, you may extend this exception to your version of the
*    file(s), but you are not obligated to do so. If you do not wish to do so,
*    delete this exception statement from your version. If you delete this
*    exception statement from all source files in the program, then also delete
*    it in the license file.
*/

#pragma once

#include <string>

#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/db/commands.h"
#include "mongo/db/repl/rs.h" // replSet bool

namespace mongo {
namespace repl {

    extern bool replSetBlind;
    extern unsigned replSetForceInitialSyncFailure;

    /**
     * Base class for repl set commands.  Checks basic things such if we're in
     * rs mode before the command does its real work.
     */
    class ReplSetCommand : public Command {
    protected:
        ReplSetCommand(const char * s, bool show=false) : Command(s, show) { }
        virtual bool slaveOk() const { return true; }
        virtual bool adminOnly() const { return true; }
        virtual bool isWriteCommandForConfigServer() const { return false; }
        virtual void help( stringstream &help ) const { help << "internal"; }

        bool check(string& errmsg, BSONObjBuilder& result) {
            if( !replSet ) {
                errmsg = "not running with --replSet";
                if (serverGlobalParams.configsvr) {
                    result.append("info", "configsvr"); // for shell prompt
                }
                return false;
            }

            if( theReplSet == 0 ) {
                result.append("startupStatus", ReplSet::startupStatus);
                string s;
                errmsg = ReplSet::startupStatusMsg.empty() ?
                            "replset unknown error 2" : ReplSet::startupStatusMsg.get();
                if( ReplSet::startupStatus == 3 )
                    result.append("info", "run rs.initiate(...) if not yet done for the set");
                return false;
            }

            return true;
        }
    };

} // namespace repl
} // namespace mongo