/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



#include "precompiled_basic.hxx"

#include "rtlproto.hxx"
#include "sbdiagnose.hxx"

#include "basic/sbstar.hxx"

#include <tools/debug.hxx>
#include <comphelper/flagguard.hxx>

#ifdef DBG_UTIL

static DbgChannelId nRestoreChannelId = 0;
static DbgChannelId nAssertionChannelId = 0;
static StarBASICRef xAssertionChannelBasic;
static String sCaptureFunctionName;
static bool bReportingAssertion = false;

void ResetCapturedAssertions()
{
	if ( nRestoreChannelId != 0 )
	{
		DBG_INSTOUTERROR( nRestoreChannelId );
	}
    nRestoreChannelId = 0;
    xAssertionChannelBasic = NULL;
    sCaptureFunctionName = String();
    bReportingAssertion = false;
}

void DbgReportAssertion( const sal_Char* i_assertionMessage )
{
    if ( !xAssertionChannelBasic )
    {
        ResetCapturedAssertions();
        return;
    }

    // prevent infinite recursion
    if ( bReportingAssertion )
        return;
    ::comphelper::FlagRestorationGuard aGuard( bReportingAssertion, true );

	SbxArrayRef const xArguments( new SbxArray( SbxVARIANT ) );
	SbxVariableRef const xMessageText = new SbxVariable( SbxSTRING );
    xMessageText->PutString( String::CreateFromAscii( i_assertionMessage ) );
    xArguments->Put( xMessageText, 1 );

    ErrCode const nError = xAssertionChannelBasic->Call( sCaptureFunctionName, xArguments );
    if ( ( nError & SbERR_METHOD_NOT_FOUND ) != 0 )
        ResetCapturedAssertions();
}

#endif

/// capture assertions, route them to the given given Basic function
RTLFUNC(CaptureAssertions)
{
    (void)bWrite;

    // need exactly one argument
	if ( rPar.Count() != 2 )
	{
		StarBASIC::Error( SbERR_BAD_ARGUMENT );
		return;
	}

#ifdef DBG_UTIL
    DBG_TESTSOLARMUTEX();

    String const sFunctionName = rPar.Get(1)->GetString();
    if ( sFunctionName.Len() == 0 )
    {
        ResetCapturedAssertions();
        return;
    }

    if ( nAssertionChannelId == 0 )
    {
        // TODO: should we register a named channel at the VCL API, instead of an unnamed channel at the tools API?
        // A named channel would mean it would appear in the nonpro-debug-options dialog
        nAssertionChannelId = DbgRegisterUserChannel( &DbgReportAssertion );
    }

    DbgChannelId const nCurrentChannelId = (DbgChannelId)DbgGetErrorOut();
    if ( nCurrentChannelId != nAssertionChannelId )
    {
        // remember the current channel
        nRestoreChannelId = nCurrentChannelId;

        // set the new channel
        DBG_INSTOUTERROR( nAssertionChannelId );

        // ensure OSL assertions are captured, too
        DbgData aData( *DbgGetData() );
        aData.bHookOSLAssert = sal_True;
        DbgUpdateOslHook( &aData );
    }

    xAssertionChannelBasic = pBasic;
    sCaptureFunctionName = sFunctionName;
#else
    (void)pBasic;
    (void)rPar;
    (void)bWrite;
#endif
}