/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   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 .

 */

#include <config_folders.h>

#include <sys/stat.h>

#include <limits.h>

#include <osl/file.hxx>

#include <osl/process.h>

#include <osl/thread.h>

#include <rtl/bootstrap.hxx>

#include <rtl/ustring.hxx>

#include <sal/log.hxx>

#include <tools/urlobj.hxx>

#include <unx/helper.hxx>

#include <tuple>

using ::rtl::Bootstrap;

namespace psp {

OUString getOfficePath( whichOfficePath ePath )

{

    static const auto aPaths = [] {

        OUString sRoot, sUser, sConfig;

        Bootstrap::get(u"BRAND_BASE_DIR"_ustr, sRoot);

        Bootstrap aBootstrap(sRoot + "/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE("bootstrap"));

        aBootstrap.getFrom(u"UserInstallation"_ustr, sUser);

        aBootstrap.getFrom(u"CustomDataUrl"_ustr, sConfig);

        OUString aUPath = sUser + "/user/psprint";

        if (sRoot.startsWith("file://"))

        {

            OUString aSysPath;

            if (osl::FileBase::getSystemPathFromFileURL(sRoot, aSysPath) == osl::FileBase::E_None)

                sRoot = aSysPath;

        }

        if (sUser.startsWith("file://"))

        {

            OUString aSysPath;

            if (osl::FileBase::getSystemPathFromFileURL(sUser, aSysPath) == osl::FileBase::E_None)

                sUser = aSysPath;

        }

        if (sConfig.startsWith("file://"))

        {

            OUString aSysPath;

            if (osl::FileBase::getSystemPathFromFileURL(sConfig, aSysPath) == osl::FileBase::E_None)

                sConfig = aSysPath;

        }

        // ensure user path exists

        SAL_INFO("vcl.fonts", "Trying to create: " << aUPath);

        osl::Directory::createPath(aUPath);

        return std::make_tuple(sRoot, sUser, sConfig);

    }();

    const auto& [aInstallationRootPath, aUserPath, aConfigPath] = aPaths;

    switch( ePath )

    {

        case whichOfficePath::ConfigPath: return aConfigPath;

        case whichOfficePath::InstallationRootPath: return aInstallationRootPath;

        case whichOfficePath::UserPath: return aUserPath;

    }

    return OUString();

}

static OString getEnvironmentPath( const char* pKey )

{

    OString aPath;

    const char* pValue = getenv( pKey );

    if( pValue && *pValue )

    {

        aPath = OString( pValue );

    }

    return aPath;

}

} // namespace psp

void psp::getPrinterPathList( std::vector< OUString >& rPathList, const char* pSubDir )

{

    rPathList.clear();

    rtl_TextEncoding aEncoding = osl_getThreadTextEncoding();

    OUStringBuffer aPathBuffer( 256 );

    // append net path

    aPathBuffer.append( getOfficePath( whichOfficePath::InstallationRootPath ) );

    if( !aPathBuffer.isEmpty() )

    {

        aPathBuffer.append( "/" LIBO_SHARE_FOLDER "/psprint" );

        if( pSubDir )

        {

            aPathBuffer.append( '/' );

            aPathBuffer.appendAscii( pSubDir );

        }

        rPathList.push_back( aPathBuffer.makeStringAndClear() );

    }

    // append user path

    aPathBuffer.append( getOfficePath( whichOfficePath::UserPath ) );

    if( !aPathBuffer.isEmpty() )

    {

        aPathBuffer.append( "/user/psprint" );

        if( pSubDir )

        {

            aPathBuffer.append( '/' );

            aPathBuffer.appendAscii( pSubDir );

        }

        rPathList.push_back( aPathBuffer.makeStringAndClear() );

    }

    OString aPath( getEnvironmentPath("SAL_PSPRINT") );

    sal_Int32 nIndex = 0;

    do

    {

        OString aDir( aPath.getToken( 0, ':', nIndex ) );

        if( aDir.isEmpty() )

            continue;

        if( pSubDir )

        {

            aDir += OString::Concat("/") + pSubDir;

        }

        struct stat aStat;

        if( stat( aDir.getStr(), &aStat ) || ! S_ISDIR( aStat.st_mode ) )

            continue;

        rPathList.push_back( OStringToOUString( aDir, aEncoding ) );

    } while( nIndex != -1 );

    #ifdef SYSTEM_PPD_DIR

    if( pSubDir && rtl_str_compare( pSubDir, PRINTER_PPDDIR ) == 0 )

    {

        rPathList.push_back( OStringToOUString( OString( SYSTEM_PPD_DIR ), RTL_TEXTENCODING_UTF8 ) );

    }

    #endif

    if( !rPathList.empty() )

        return;

    // last resort: next to program file (mainly for setup)

    OUString aExe;

    if( osl_getExecutableFile( &aExe.pData ) == osl_Process_E_None )

    {

        INetURLObject aDir( aExe );

        aDir.removeSegment();

        aExe = aDir.GetMainURL( INetURLObject::DecodeMechanism::NONE );

        OUString aSysPath;

        if( osl_getSystemPathFromFileURL( aExe.pData, &aSysPath.pData ) == osl_File_E_None )

        {

            rPathList.push_back( aSysPath );

        }

    }

}

OUString const & psp::getFontPath()

{

    static OUString aPath;

    if (aPath.isEmpty())

    {

        OUStringBuffer aPathBuffer( 512 );

        OUString aConfigPath( getOfficePath( whichOfficePath::ConfigPath ) );

        OUString aInstallationRootPath( getOfficePath( whichOfficePath::InstallationRootPath ) );

        OUString aUserPath( getOfficePath( whichOfficePath::UserPath ) );

        if (!aInstallationRootPath.isEmpty())

        {

            // internal font resources, required for normal operation, like OpenSymbol

            aPathBuffer.append(aInstallationRootPath

                               + "/" LIBO_SHARE_RESOURCE_FOLDER "/common/fonts;");

        }

        if( !aConfigPath.isEmpty() )

        {

            // #i53530# Path from CustomDataUrl will completely

            // replace net share and user paths if the path exists

            OUString sPath = aConfigPath + "/" LIBO_SHARE_FOLDER "/fonts";

            // check existence of config path

            struct stat aStat;

            if( 0 != stat( OUStringToOString( sPath, osl_getThreadTextEncoding() ).getStr(), &aStat )

                || ! S_ISDIR( aStat.st_mode ) )

                aConfigPath.clear();

            else

            {

                aPathBuffer.append(sPath);

            }

        }

        if( aConfigPath.isEmpty() )

        {

            if( !aInstallationRootPath.isEmpty() )

            {

                aPathBuffer.append( aInstallationRootPath

                    + "/" LIBO_SHARE_FOLDER "/fonts/truetype;");

            }

            if( !aUserPath.isEmpty() )

            {

                aPathBuffer.append( aUserPath + "/user/fonts" );

            }

        }

        aPath = aPathBuffer.makeStringAndClear();

        SAL_INFO("vcl.fonts", "Initializing font path to: " << aPath);

    }

    return aPath;

}

void psp::normPath( OString& rPath )

{

    char buf[PATH_MAX];

    // double slashes and slash at end are probably

    // removed by realpath anyway, but since this runs

    // on many different platforms let's play it safe

    OString aPath = rPath.replaceAll("//"_ostr, "/"_ostr);

    if( aPath.endsWith("/") )

        aPath = aPath.copy(0, aPath.getLength()-1);

    if( ( aPath.indexOf("./") != -1 ||

          aPath.indexOf( '~' ) != -1 )

        && realpath( aPath.getStr(), buf ) )

    {

        rPath = buf;

    }

    else

    {

        rPath = aPath;

    }

}

void psp::splitPath( OString& rPath, OString& rDir, OString& rBase )

{

    normPath( rPath );

    sal_Int32 nIndex = rPath.lastIndexOf( '/' );

    if( nIndex > 0 )

        rDir = rPath.copy( 0, nIndex );

    else if( nIndex == 0 ) // root dir

        rDir = rPath.copy( 0, 1 );

    if( rPath.getLength() > nIndex+1 )

        rBase = rPath.copy( nIndex+1 );

}

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