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#include "loader.h"

#include "builtindeclarations.h"
#include "item.h"
#include "moduleloader.h"
#include "projectresolver.h"
#include <logging/translator.h>
#include <tools/fileinfo.h>
#include <tools/progressobserver.h>
#include <tools/qbsassert.h>
#include <tools/setupprojectparameters.h>

#include <QDir>
#include <QTimer>

namespace qbs {
namespace Internal {

Loader::Loader(ScriptEngine *engine, const Logger &logger)
    : m_logger(logger)
    , m_progressObserver(0)
    , m_builtins(new BuiltinDeclarations)
    , m_moduleLoader(new ModuleLoader(engine, m_builtins, logger))
    , m_projectResolver(new ProjectResolver(m_moduleLoader, m_builtins, logger))
    , m_engine(engine)
{
}

Loader::~Loader()
{
    delete m_projectResolver;
    delete m_moduleLoader;
    delete m_builtins;
}

void Loader::setProgressObserver(ProgressObserver *observer)
{
    m_progressObserver = observer;
    m_moduleLoader->setProgressObserver(observer);
    m_projectResolver->setProgressObserver(observer);
}

void Loader::setSearchPaths(const QStringList &_searchPaths)
{
    QStringList searchPaths;
    foreach (const QString &searchPath, _searchPaths) {
        if (!FileInfo::exists(searchPath)) {
            m_logger.qbsWarning() << Tr::tr("Search path '%1' does not exist.")
                    .arg(QDir::toNativeSeparators(searchPath));
        } else {
            searchPaths += searchPath;
        }
    }

    m_moduleLoader->setSearchPaths(searchPaths);
}

TopLevelProjectPtr Loader::loadProject(const SetupProjectParameters &parameters)
{
    QBS_CHECK(QFileInfo(parameters.projectFilePath()).isAbsolute());

    m_engine->setEnvironment(parameters.adjustedEnvironment());
    m_engine->clearExceptions();

    QTimer cancelationTimer;

    // At this point, we cannot set a sensible total effort, because we know nothing about
    // the project yet. That's why we use a placeholder here, so the user at least
    // sees that an operation is starting. The real total effort will be set later when
    // we have enough information.
    if (m_progressObserver) {
        m_progressObserver->initialize(Tr::tr("Resolving project for configuration %1")
                .arg(TopLevelProject::deriveId(parameters.topLevelProfile(),
                                               parameters.finalBuildConfigurationTree())), 1);
        cancelationTimer.setSingleShot(false);
        QObject::connect(&cancelationTimer, SIGNAL(timeout()), SLOT(checkForCancelation()));
        cancelationTimer.start(1000);
    }

    const FileTime resolveTime = FileTime::currentTime();
    ModuleLoaderResult loadResult = m_moduleLoader->load(parameters);
    const TopLevelProjectPtr project = m_projectResolver->resolve(loadResult, parameters);
    project->lastResolveTime = resolveTime;

    // E.g. if the top-level project is disabled.
    if (m_progressObserver)
        m_progressObserver->setFinished();

    return project;
}

void Loader::checkForCancelation()
{
    QBS_ASSERT(m_progressObserver, return);
    if (m_progressObserver->canceled())
        m_engine->cancel();
}

} // namespace Internal
} // namespace qbs
