/*
 * Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
 * 
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */

#include <ProjectUtils.h>
#include <ProjectManagerDefs.h>
#include <QProcessEnvironment>

namespace O3DE::ProjectManager
{
    namespace ProjectUtils
    {
        // The list of clang C/C++ compiler command lines to validate on the host Linux system
        const QStringList SupportedClangCommands = {"clang-12|clang++-12"};

        AZ::Outcome<QProcessEnvironment, QString> GetCommandLineProcessEnvironment()
        {
            return AZ::Success(QProcessEnvironment(QProcessEnvironment::systemEnvironment()));
        }

        AZ::Outcome<QString, QString> FindSupportedCompilerForPlatform()
        {
            // Validate that cmake is installed and is in the command line
            auto whichCMakeResult = ProjectUtils::ExecuteCommandResult("which", QStringList{ProjectCMakeCommand}, QProcessEnvironment::systemEnvironment());
            if (!whichCMakeResult.IsSuccess())
            {
                return AZ::Failure(QObject::tr("CMake not found. \n\n"
                    "Make sure that the minimum version of CMake is installed and available from the command prompt. "
                    "Refer to the <a href='https://o3de.org/docs/welcome-guide/setup/requirements/#cmake'>O3DE requirements</a> page for more information."));
            }

            // Look for the first compatible version of clang. The list below will contain the known clang compilers that have been tested for O3DE.
            for (const QString& supportClangCommand : SupportedClangCommands)
            {
                auto clangCompilers = supportClangCommand.split('|');
                AZ_Assert(clangCompilers.length()==2, "Invalid clang compiler pair specification");

                auto whichClangResult = ProjectUtils::ExecuteCommandResult("which", QStringList{clangCompilers[0]}, QProcessEnvironment::systemEnvironment());
                auto whichClangPPResult = ProjectUtils::ExecuteCommandResult("which", QStringList{clangCompilers[1]}, QProcessEnvironment::systemEnvironment());
                if (whichClangResult.IsSuccess() && whichClangPPResult.IsSuccess())
                {
                    return AZ::Success(supportClangCommand);
                }
            }
            return AZ::Failure(QObject::tr("Clang not found. \n\n"
                "Make sure that the clang is installed and available from the command prompt. "
                "Refer to the <a href='https://o3de.org/docs/welcome-guide/setup/requirements/#cmake'>O3DE requirements</a> page for more information."));
        }
        
    } // namespace ProjectUtils
} // namespace O3DE::ProjectManager