// client.cpp

/*
 *    Copyright (C) 2010 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.
 */

#include "mongo/client/dbclientcursor.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/operation_context_impl.h"
#include "mongo/dbtests/dbtests.h"


namespace ClientTests {

    class Base {
    public:

        Base( string coll ) {
            db.dropDatabase("test");
            _ns = (string)"test." + coll;
        }

        virtual ~Base() {
            db.dropCollection( _ns );
        }

        const char * ns() { return _ns.c_str(); }

        string _ns;
        DBDirectClient db;
    };


    class DropIndex : public Base {
    public:
        DropIndex() : Base( "dropindex" ) {}
        void run() {
            db.insert( ns() , BSON( "x" << 2 ) );
            ASSERT_EQUALS( 1 , db.getIndexes( ns() )->itcount() );

            db.ensureIndex( ns() , BSON( "x" << 1 ) );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );

            db.dropIndex( ns() , BSON( "x" << 1 ) );
            ASSERT_EQUALS( 1 , db.getIndexes( ns() )->itcount() );

            db.ensureIndex( ns() , BSON( "x" << 1 ) );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );

            db.dropIndexes( ns() );
            ASSERT_EQUALS( 1 , db.getIndexes( ns() )->itcount() );
        }
    };

    class ReIndex : public Base {
    public:
        ReIndex() : Base( "reindex" ) {}
        void run() {

            db.insert( ns() , BSON( "x" << 2 ) );
            ASSERT_EQUALS( 1 , db.getIndexes( ns() )->itcount() );

            db.ensureIndex( ns() , BSON( "x" << 1 ) );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );

            db.reIndex( ns() );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );
        }

    };

    class ReIndex2 : public Base {
    public:
        ReIndex2() : Base( "reindex2" ) {}
        void run() {

            db.insert( ns() , BSON( "x" << 2 ) );
            ASSERT_EQUALS( 1 , db.getIndexes( ns() )->itcount() );

            db.ensureIndex( ns() , BSON( "x" << 1 ) );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );

            BSONObj out;
            ASSERT( db.runCommand( "test" , BSON( "reIndex" << "reindex2" ) , out ) );
            ASSERT_EQUALS( 2 , out["nIndexes"].number() );
            ASSERT_EQUALS( 2 , db.getIndexes( ns() )->itcount() );
        }

    };

    /**
     * Check that nIndexes is incremented correctly when an index builds (and that it is not
     * incremented when an index fails to build), system.indexes has an entry added (or not), and
     * system.namespaces has a doc added (or not).
     */
    class BuildIndex : public Base {
    public:
        BuildIndex() : Base("buildIndex") {}
        void run() {
            OperationContextImpl txn;
            Client::WriteContext ctx(&txn, ns());

            db.insert(ns(), BSON("x" << 1 << "y" << 2));
            db.insert(ns(), BSON("x" << 2 << "y" << 2));

            Collection* collection = ctx.ctx().db()->getCollection( &txn, ns() );
            ASSERT( collection );
            IndexCatalog* indexCatalog = collection->getIndexCatalog();

            ASSERT_EQUALS(1, indexCatalog->numIndexesReady());
            // _id index
            ASSERT_EQUALS(1U, db.count("test.system.indexes"));
            // test.buildindex
            // test.buildindex_$id
            // test.system.indexes
            ASSERT_EQUALS(3U, db.count("test.system.namespaces"));

            db.ensureIndex(ns(), BSON("y" << 1), true);

            ASSERT_EQUALS(1, indexCatalog->numIndexesReady());
            ASSERT_EQUALS(1U, db.count("test.system.indexes"));
            ASSERT_EQUALS(3U, db.count("test.system.namespaces"));

            db.ensureIndex(ns(), BSON("x" << 1), true);

            ASSERT_EQUALS(2, indexCatalog->numIndexesReady());
            ASSERT_EQUALS(2U, db.count("test.system.indexes"));
            ASSERT_EQUALS(4U, db.count("test.system.namespaces"));
        }
    };

    class CS_10 : public Base {
    public:
        CS_10() : Base( "CS_10" ) {}
        void run() {
            string longs( 770, 'c' );
            for( int i = 0; i < 1111; ++i )
                db.insert( ns(), BSON( "a" << i << "b" << longs ) );
            db.ensureIndex( ns(), BSON( "a" << 1 << "b" << 1 ) );

            auto_ptr< DBClientCursor > c = db.query( ns(), Query().sort( BSON( "a" << 1 << "b" << 1 ) ) );
            ASSERT_EQUALS( 1111, c->itcount() );
        }
    };

    class PushBack : public Base {
    public:
        PushBack() : Base( "PushBack" ) {}
        void run() {
            for( int i = 0; i < 10; ++i )
                db.insert( ns(), BSON( "i" << i ) );
            auto_ptr< DBClientCursor > c = db.query( ns(), Query().sort( BSON( "i" << 1 ) ) );

            BSONObj o = c->next();
            ASSERT( c->more() );
            ASSERT_EQUALS( 9 , c->objsLeftInBatch() );
            ASSERT( c->moreInCurrentBatch() );

            c->putBack( o );
            ASSERT( c->more() );
            ASSERT_EQUALS( 10, c->objsLeftInBatch() );
            ASSERT( c->moreInCurrentBatch() );

            o = c->next();
            BSONObj o2 = c->next();
            BSONObj o3 = c->next();
            c->putBack( o3 );
            c->putBack( o2 );
            c->putBack( o );
            for( int i = 0; i < 10; ++i ) {
                o = c->next();
                ASSERT_EQUALS( i, o[ "i" ].number() );
            }
            ASSERT( !c->more() );
            ASSERT_EQUALS( 0, c->objsLeftInBatch() );
            ASSERT( !c->moreInCurrentBatch() );

            c->putBack( o );
            ASSERT( c->more() );
            ASSERT_EQUALS( 1, c->objsLeftInBatch() );
            ASSERT( c->moreInCurrentBatch() );
            ASSERT_EQUALS( 1, c->itcount() );
        }
    };

    class Create : public Base {
    public:
        Create() : Base( "Create" ) {}
        void run() {
            db.createCollection( "unittests.clienttests.create", 4096, true );
            BSONObj info;
            ASSERT( db.runCommand( "unittests", BSON( "collstats" << "clienttests.create" ), info ) );
        }
    };
    
    class ConnectionStringTests {
    public:
        void run() {
            {
                ConnectionString s( "a/b,c,d" , ConnectionString::SET );
                ASSERT_EQUALS( ConnectionString::SET , s.type() );
                ASSERT_EQUALS( "a" , s.getSetName() );
                vector<HostAndPort> v = s.getServers();
                ASSERT_EQUALS( 3U , v.size() );
                ASSERT_EQUALS( "b" , v[0].host() );
                ASSERT_EQUALS( "c" , v[1].host() );
                ASSERT_EQUALS( "d" , v[2].host() );
            }
        }
    };

    class All : public Suite {
    public:
        All() : Suite( "client" ) {
        }

        void setupTests() {
            add<DropIndex>();
            add<ReIndex>();
            add<ReIndex2>();
            add<BuildIndex>();
            add<CS_10>();
            add<PushBack>();
            add<Create>();
            add<ConnectionStringTests>();
        }

    } all;
}
