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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_connectivity.hxx"


#include "calc/CDatabaseMetaData.hxx"
#include "calc/CConnection.hxx"
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/sdbc/ResultSetType.hpp>
#include <com/sun/star/sdbc/ColumnValue.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/sdbc/ResultSetConcurrency.hpp>
#include <com/sun/star/sdbcx/XColumnsSupplier.hpp>
#include <com/sun/star/sdbcx/XIndexesSupplier.hpp>
#include <com/sun/star/sheet/XSpreadsheetDocument.hpp>
#include <com/sun/star/sheet/XSpreadsheet.hpp>
#include <com/sun/star/sheet/XCellRangesQuery.hpp>
#include <com/sun/star/sheet/XCellRangeAddressable.hpp>
#include <com/sun/star/sheet/XDatabaseRanges.hpp>
#include <com/sun/star/sheet/XDatabaseRange.hpp>
#include <tools/urlobj.hxx>
#include "FDatabaseMetaDataResultSet.hxx"
#include <com/sun/star/lang/XUnoTunnel.hpp>
#include <comphelper/types.hxx>
#include <rtl/logfile.hxx>

using namespace connectivity::calc;
using namespace connectivity::file;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::sdbcx;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::table;
using namespace ::com::sun::star::sheet;

// -------------------------------------------------------------------------

OCalcDatabaseMetaData::OCalcDatabaseMetaData(OConnection* _pCon) 	:ODatabaseMetaData(_pCon)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::OCalcDatabaseMetaData" );
}

// -------------------------------------------------------------------------

OCalcDatabaseMetaData::~OCalcDatabaseMetaData()
{
}

// -------------------------------------------------------------------------
Reference< XResultSet > OCalcDatabaseMetaData::impl_getTypeInfo_throw(  )
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::impl_getTypeInfo_throw" );
	::osl::MutexGuard aGuard( m_aMutex );

	ODatabaseMetaDataResultSet* pResult = new ODatabaseMetaDataResultSet(::connectivity::ODatabaseMetaDataResultSet::eTypeInfo);
    Reference< XResultSet > xRef = pResult;

	static ODatabaseMetaDataResultSet::ORows aRows;
	if(aRows.empty())
	{
		ODatabaseMetaDataResultSet::ORow aRow;

		aRows.reserve(6);
		aRow.reserve(18);

		aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
		aRow.push_back(new ORowSetValueDecorator(::rtl::OUString::createFromAscii("VARCHAR")));
		aRow.push_back(new ORowSetValueDecorator(DataType::VARCHAR));
		aRow.push_back(new ORowSetValueDecorator((sal_Int32)65535));
		aRow.push_back(ODatabaseMetaDataResultSet::getQuoteValue());
		aRow.push_back(ODatabaseMetaDataResultSet::getQuoteValue());
		aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
		aRow.push_back(ODatabaseMetaDataResultSet::get1Value()); // ORowSetValue((sal_Int32)ColumnValue::NULLABLE)
		aRow.push_back(ODatabaseMetaDataResultSet::get1Value());
		aRow.push_back(new ORowSetValueDecorator((sal_Int32)ColumnSearch::CHAR));
		aRow.push_back(ODatabaseMetaDataResultSet::get1Value());
		aRow.push_back(ODatabaseMetaDataResultSet::get0Value());
		aRow.push_back(ODatabaseMetaDataResultSet::get0Value());
		aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
		aRow.push_back(ODatabaseMetaDataResultSet::get0Value());
		aRow.push_back(ODatabaseMetaDataResultSet::get0Value());
		aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
		aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
		aRow.push_back(new ORowSetValueDecorator((sal_Int32)10));


		aRows.push_back(aRow);

		aRow[1] = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("DECIMAL"));
		aRow[2] = new ORowSetValueDecorator(DataType::DECIMAL);
		aRow[3] = ODatabaseMetaDataResultSet::get0Value();
		aRow[9] = ODatabaseMetaDataResultSet::getBasicValue();
		aRow[15] = ODatabaseMetaDataResultSet::get0Value();
		aRows.push_back(aRow);

		aRow[1] = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("BOOL"));
		aRow[2] = new ORowSetValueDecorator(DataType::BIT);
		aRow[3] = new ORowSetValueDecorator((sal_Int32)20);
		aRow[9] = ODatabaseMetaDataResultSet::getBasicValue();
		aRow[15] = new ORowSetValueDecorator((sal_Int32)15);
		aRows.push_back(aRow);

		aRow[1] = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("DATE"));
		aRow[2] = new ORowSetValueDecorator(DataType::DATE);
		aRow[3] = ODatabaseMetaDataResultSet::get0Value();
		aRow[9] = ODatabaseMetaDataResultSet::getBasicValue();
		aRow[15] = ODatabaseMetaDataResultSet::get0Value();
		aRows.push_back(aRow);

		aRow[1] = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("TIME"));
		aRow[2] = new ORowSetValueDecorator(DataType::TIME);
		aRow[3] = ODatabaseMetaDataResultSet::get0Value();
		aRow[9] = ODatabaseMetaDataResultSet::getBasicValue();
		aRow[15] = ODatabaseMetaDataResultSet::get0Value();
		aRows.push_back(aRow);

		aRow[1] = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("TIMESTAMP"));
		aRow[2] = new ORowSetValueDecorator(DataType::TIMESTAMP);
		aRow[3] = ODatabaseMetaDataResultSet::get0Value();
		aRow[9] = ODatabaseMetaDataResultSet::getBasicValue();
		aRow[15] = ODatabaseMetaDataResultSet::get0Value();
		aRows.push_back(aRow);
	}

	pResult->setRows(aRows);
	return xRef;
}

// -------------------------------------------------------------------------

Reference< XResultSet > SAL_CALL OCalcDatabaseMetaData::getColumns(
	const Any& /*catalog*/, const ::rtl::OUString& /*schemaPattern*/, const ::rtl::OUString& tableNamePattern,
        const ::rtl::OUString& columnNamePattern ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getColumns" );
	::osl::MutexGuard aGuard( m_aMutex );


    Reference< XTablesSupplier > xTables = m_pConnection->createCatalog();
	if(!xTables.is())
        throw SQLException();

	Reference< XNameAccess> xNames = xTables->getTables();
	if(!xNames.is())
        throw SQLException();

	ODatabaseMetaDataResultSet::ORows aRows;
	ODatabaseMetaDataResultSet::ORow  aRow(19);

	aRow[10] = new ORowSetValueDecorator((sal_Int32)10);

	Sequence< ::rtl::OUString> aTabNames(xNames->getElementNames());
	const ::rtl::OUString* pTabIter	= aTabNames.getConstArray();
	const ::rtl::OUString* pTabEnd		= pTabIter + aTabNames.getLength();
	for(;pTabIter != pTabEnd;++pTabIter)
	{
		if(match(tableNamePattern,*pTabIter,'\0'))
		{
			const Reference< XColumnsSupplier> xTable(xNames->getByName(*pTabIter),UNO_QUERY_THROW);
			OSL_ENSURE(xTable.is(),"Table not found! Normallya exception had to be thrown here!");
			aRow[3] = new ORowSetValueDecorator(*pTabIter);

			const Reference< XNameAccess> xColumns = xTable->getColumns();
			if(!xColumns.is())
                throw SQLException();

			const Sequence< ::rtl::OUString> aColNames(xColumns->getElementNames());

			const ::rtl::OUString* pColumnIter = aColNames.getConstArray();
			const ::rtl::OUString* pEnd = pColumnIter + aColNames.getLength();
			Reference< XPropertySet> xColumn;
			for(sal_Int32 i=1;pColumnIter != pEnd;++pColumnIter,++i)
			{
				if(match(columnNamePattern,*pColumnIter,'\0'))
				{
					aRow[4]  = new ORowSetValueDecorator( *pColumnIter);

					xColumns->getByName(*pColumnIter) >>= xColumn;
					OSL_ENSURE(xColumn.is(),"Columns contains a column who isn't a fastpropertyset!");
					aRow[5] = new ORowSetValueDecorator(::comphelper::getINT32(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPE))));
					aRow[6] = new ORowSetValueDecorator(::comphelper::getString(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPENAME))));
					aRow[7] = new ORowSetValueDecorator(::comphelper::getINT32(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_PRECISION))));
					//	aRow[8] = xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPENAME));
					aRow[9] = new ORowSetValueDecorator(::comphelper::getINT32(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_SCALE))));
					aRow[11] = new ORowSetValueDecorator(::comphelper::getINT32(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_ISNULLABLE))));
					//	aRow[12] = xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPENAME));
					aRow[13] = new ORowSetValueDecorator(::comphelper::getString(xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_DEFAULTVALUE))));
					//	aRow[14] = xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPENAME));
					//	aRow[15] = xColumn->getPropertyValue(OMetaConnection::getPropMap().getNameByIndex(PROPERTY_ID_TYPENAME));
					switch(sal_Int32(aRow[5]->getValue()))
					{
					case DataType::CHAR:
					case DataType::VARCHAR:
						aRow[16] = new ORowSetValueDecorator((sal_Int32)254);
						break;
					case DataType::LONGVARCHAR:
						aRow[16] = new ORowSetValueDecorator((sal_Int32)65535);
						break;
					default:
						aRow[16] = new ORowSetValueDecorator((sal_Int32)0);
					}
					aRow[17] = new ORowSetValueDecorator(i);
					switch(sal_Int32(aRow[11]->getValue()))
					{
					case ColumnValue::NO_NULLS:
						aRow[18]  = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("NO"));
						break;
					case ColumnValue::NULLABLE:
						aRow[18]  = new ORowSetValueDecorator(::rtl::OUString::createFromAscii("YES"));
						break;
					default:
						aRow[18]  = new ORowSetValueDecorator(::rtl::OUString());
					}
					aRows.push_back(aRow);
				}
			}
		}
	}

	ODatabaseMetaDataResultSet* pResult = new ODatabaseMetaDataResultSet(::connectivity::ODatabaseMetaDataResultSet::eColumns);
    Reference< XResultSet > xRef = pResult;
	pResult->setRows(aRows);

	return xRef;
}

// -------------------------------------------------------------------------

::rtl::OUString SAL_CALL OCalcDatabaseMetaData::getURL(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getURL" );
	::osl::MutexGuard aGuard( m_aMutex );

	return ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("sdbc:calc:")) + m_pConnection->getURL();
}

// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OCalcDatabaseMetaData::getMaxBinaryLiteralLength(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getMaxBinaryLiteralLength" );
	return STRING_MAXLEN;
}

// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OCalcDatabaseMetaData::getMaxCharLiteralLength(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getMaxCharLiteralLength" );
	return STRING_MAXLEN;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OCalcDatabaseMetaData::getMaxColumnNameLength(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getMaxColumnNameLength" );
	return STRING_MAXLEN;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OCalcDatabaseMetaData::getMaxColumnsInIndex(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getMaxColumnsInIndex" );
	return 1;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OCalcDatabaseMetaData::getMaxColumnsInTable(  ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getMaxColumnsInTable" );
	return 256;
}

// -------------------------------------------------------------------------

sal_Bool lcl_IsEmptyOrHidden( const Reference<XSpreadsheets>& xSheets, const ::rtl::OUString& rName )
{
	Any aAny = xSheets->getByName( rName );
	Reference<XSpreadsheet> xSheet;
	if ( aAny >>= xSheet )
	{
		//	test if sheet is hidden

		Reference<XPropertySet> xProp( xSheet, UNO_QUERY );
		if (xProp.is())
		{
			sal_Bool bVisible = sal_Bool();
			Any aVisAny = xProp->getPropertyValue( ::rtl::OUString::createFromAscii("IsVisible") );
			if ( aVisAny >>= bVisible )
				if (!bVisible)
					return sal_True;				// hidden
		}

#if 0
		//	test if whole sheet is empty

		Reference<XCellRangeAddressable> xAddr( xSheet, UNO_QUERY );
		Reference<XCellRangesQuery> xQuery( xSheet, UNO_QUERY );
		if ( xAddr.is() && xQuery.is() )
		{
			CellRangeAddress aTotalRange = xAddr->getRangeAddress();
			// queryIntersection to get a ranges object
			Reference<XSheetCellRanges> xRanges = xQuery->queryIntersection( aTotalRange );
			if (xRanges.is())
			{
				Reference<XEnumerationAccess> xCells = xRanges->getCells();
				if (xCells.is())
				{
					if ( !xCells->hasElements() )
						return sal_True;			// empty
				}
			}
		}
#endif

		//	use the same data area as in OCalcTable to test for empty table

		Reference<XSheetCellCursor> xCursor = xSheet->createCursor();
		Reference<XCellRangeAddressable> xRange( xCursor, UNO_QUERY );
		if ( xRange.is() )
		{
			xCursor->collapseToSize( 1, 1 );		// single (first) cell
			xCursor->collapseToCurrentRegion();		// contiguous data area

			CellRangeAddress aRangeAddr = xRange->getRangeAddress();
			if ( aRangeAddr.StartColumn == aRangeAddr.EndColumn &&
				 aRangeAddr.StartRow == aRangeAddr.EndRow )
			{
				//	single cell -> check content
				Reference<XCell> xCell = xCursor->getCellByPosition( 0, 0 );
				if ( xCell.is() && xCell->getType() == CellContentType_EMPTY )
					return sal_True;
			}
		}
	}

	return sal_False;
}

sal_Bool lcl_IsUnnamed( const Reference<XDatabaseRanges>& xRanges, const ::rtl::OUString& rName )
{
	sal_Bool bUnnamed = sal_False;

	Any aAny = xRanges->getByName( rName );
	Reference<XDatabaseRange> xRange;
	if ( aAny >>= xRange )
	{
		Reference<XPropertySet> xRangeProp( xRange, UNO_QUERY );
		if ( xRangeProp.is() )
		{
			try
			{
				Any aUserAny = xRangeProp->getPropertyValue( ::rtl::OUString::createFromAscii("IsUserDefined") );
				sal_Bool bUserDefined = sal_Bool();
				if ( aUserAny >>= bUserDefined )
					bUnnamed = !bUserDefined;
			}
			catch ( UnknownPropertyException& )
			{
				// optional property
			}
		}
	}

	return bUnnamed;
}

// -------------------------------------------------------------------------

Reference< XResultSet > SAL_CALL OCalcDatabaseMetaData::getTables(
        const Any& /*catalog*/, const ::rtl::OUString& /*schemaPattern*/,
        const ::rtl::OUString& tableNamePattern, const Sequence< ::rtl::OUString >& types )
        throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "calc", "Ocke.Janssen@sun.com", "OCalcDatabaseMetaData::getTables" );
	::osl::MutexGuard aGuard( m_aMutex );

    ODatabaseMetaDataResultSet* pResult = new ODatabaseMetaDataResultSet(ODatabaseMetaDataResultSet::eTables);
    Reference< XResultSet > xRef = pResult;

	// check if ORowSetValue type is given
	// when no types are given then we have to return all tables e.g. TABLE

	::rtl::OUString aTable(::rtl::OUString::createFromAscii("TABLE"));

	sal_Bool bTableFound = sal_True;
	sal_Int32 nLength = types.getLength();
	if(nLength)
	{
		bTableFound = sal_False;

		const ::rtl::OUString* pIter = types.getConstArray();
		const ::rtl::OUString* pEnd	= pIter + nLength;
		for(;pIter != pEnd;++pIter)
		{
			if(*pIter == aTable)
			{
				bTableFound = sal_True;
				break;
			}
		}
	}
	if(!bTableFound)
		return xRef;

	// get the sheet names from the document

    OCalcConnection::ODocHolder aDocHodler(((OCalcConnection*)m_pConnection));
	Reference<XSpreadsheetDocument> xDoc = aDocHodler.getDoc();
	if ( !xDoc.is() )
		throw SQLException();
	Reference<XSpreadsheets> xSheets = xDoc->getSheets();
	if ( !xSheets.is() )
		throw SQLException();
	Sequence< ::rtl::OUString > aSheetNames = xSheets->getElementNames();

	ODatabaseMetaDataResultSet::ORows aRows;
	sal_Int32 nSheetCount = aSheetNames.getLength();
	for (sal_Int32 nSheet=0; nSheet<nSheetCount; nSheet++)
	{
		::rtl::OUString aName = aSheetNames[nSheet];
		if ( !lcl_IsEmptyOrHidden( xSheets, aName ) && match(tableNamePattern,aName,'\0') )
		{
			ODatabaseMetaDataResultSet::ORow aRow(3);
			aRow.reserve(6);
			aRow.push_back(new ORowSetValueDecorator(aName));
			aRow.push_back(new ORowSetValueDecorator(aTable));
			aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
			aRows.push_back(aRow);
		}
	}

	// also use database ranges

	Reference<XPropertySet> xDocProp( xDoc, UNO_QUERY );
	if ( xDocProp.is() )
	{
		Any aRangesAny = xDocProp->getPropertyValue( ::rtl::OUString::createFromAscii("DatabaseRanges") );
		Reference<XDatabaseRanges> xRanges;
		if ( aRangesAny >>= xRanges )
		{
			Sequence< ::rtl::OUString > aDBNames = xRanges->getElementNames();
			sal_Int32 nDBCount = aDBNames.getLength();
			for (sal_Int32 nRange=0; nRange<nDBCount; nRange++)
			{
				::rtl::OUString aName = aDBNames[nRange];
				if ( !lcl_IsUnnamed( xRanges, aName ) && match(tableNamePattern,aName,'\0') )
				{
					ODatabaseMetaDataResultSet::ORow aRow(3);
					aRow.reserve(6);
					aRow.push_back(new ORowSetValueDecorator(aName));
					aRow.push_back(new ORowSetValueDecorator(aTable));
					aRow.push_back(ODatabaseMetaDataResultSet::getEmptyValue());
					aRows.push_back(aRow);
				}
			}
		}
	}

	pResult->setRows(aRows);

	return xRef;
}
// -----------------------------------------------------------------------------