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#ifndef QMLJSMODELMANAGERINTERFACE_H
#define QMLJSMODELMANAGERINTERFACE_H

#include "qmljs_global.h"
#include "qmljsdocument.h"

#include <utils/environment.h>

#include <QObject>
#include <QStringList>
#include <QPointer>

namespace ProjectExplorer {
    class Project;
}

namespace QmlJS {

class Snapshot;

class QMLJS_EXPORT ModelManagerInterface: public QObject
{
    Q_OBJECT

public:
    class ProjectInfo
    {
    public:
        ProjectInfo()
            : tryQmlDump(false)
        { }

        ProjectInfo(QPointer<ProjectExplorer::Project> project)
            : project(project)
        { }

        operator bool() const
        { return ! project.isNull(); }

        bool isValid() const
        { return ! project.isNull(); }

        bool isNull() const
        { return project.isNull(); }

    public: // attributes
        QPointer<ProjectExplorer::Project> project;
        QStringList sourceFiles;
        QStringList importPaths;

        // whether trying to run qmldump makes sense
        bool tryQmlDump;
        QString qmlDumpPath;
        ::Utils::Environment qmlDumpEnvironment;

        QString qtImportsPath;
        QString qtVersionString;
    };

    class WorkingCopy
    {
    public:
        typedef QHash<QString, QPair<QString, int> > Table;

        void insert(const QString &fileName, const QString &source, int revision = 0)
        { _elements.insert(fileName, qMakePair(source, revision)); }

        bool contains(const QString &fileName) const
        { return _elements.contains(fileName); }

        QString source(const QString &fileName) const
        { return _elements.value(fileName).first; }

        QPair<QString, int> get(const QString &fileName) const
        { return _elements.value(fileName); }

        Table all() const
        { return _elements; }

    private:
        Table _elements;
    };

    class CppData
    {
    public:
        QList<LanguageUtils::FakeMetaObject::ConstPtr> exportedTypes;
        QHash<QString, QString> contextProperties;
    };

    typedef QHash<QString, CppData> CppDataHash;

public:
    ModelManagerInterface(QObject *parent = 0);
    virtual ~ModelManagerInterface();

    static ModelManagerInterface *instance();

    virtual WorkingCopy workingCopy() const = 0;

    virtual QmlJS::Snapshot snapshot() const = 0;
    virtual QmlJS::Snapshot newestSnapshot() const = 0;

    virtual void updateSourceFiles(const QStringList &files,
                                   bool emitDocumentOnDiskChanged) = 0;
    virtual void fileChangedOnDisk(const QString &path) = 0;
    virtual void removeFiles(const QStringList &files) = 0;

    virtual QList<ProjectInfo> projectInfos() const = 0;
    virtual ProjectInfo projectInfo(ProjectExplorer::Project *project) const = 0;
    virtual void updateProjectInfo(const ProjectInfo &pinfo) = 0;
    Q_SLOT virtual void removeProjectInfo(ProjectExplorer::Project *project) = 0;

    virtual QStringList importPaths() const = 0;

    virtual void loadPluginTypes(const QString &libraryPath, const QString &importPath,
                                 const QString &importUri, const QString &importVersion) = 0;

    virtual CppDataHash cppData() const = 0;

    virtual LibraryInfo builtins(const Document::Ptr &doc) const = 0;

    // Blocks until all parsing threads are done. Used for testing.
    virtual void joinAllThreads() = 0;

public slots:
    virtual void resetCodeModel() = 0;

signals:
    void documentUpdated(QmlJS::Document::Ptr doc);
    void documentChangedOnDisk(QmlJS::Document::Ptr doc);
    void aboutToRemoveFiles(const QStringList &files);
    void libraryInfoUpdated(const QString &path, const QmlJS::LibraryInfo &info);
    void projectInfoUpdated(const ProjectInfo &pinfo);
};

} // namespace QmlJS

#endif // QMLJSMODELMANAGERINTERFACE_H