#pragma once

#define PLUGIN_LOADER_VERSION 3

#include <QtCore/QMap>
#include <QtCore/QPair>
#include <functional>
#include <qglobal.h>

#ifndef LTSPLUGINLOADER_EXPORT
#ifdef BUILD_STATIC_LIBRARIES
#define LTSPLUGINLOADER_EXPORT
#else
#if defined(MAKE_LTSPLUGINLOADER_LIB)
#define LTSPLUGINLOADER_EXPORT Q_DECL_EXPORT
#else
#define LTSPLUGINLOADER_EXPORT Q_DECL_IMPORT
#endif
#endif
#endif

class QObject;
class QPluginLoader;

namespace LtsAppDescriptor
{
struct AppDescription;
}

namespace LtsPluginManager
{

enum class PluginType {
    UNKNOWN = 0,
    DATA,
    GUI,
    TOPIC_TYPE,
    PROJECT,
    STYLE,
    SPECIAL,
};

struct PluginInstance
{
    QString pluginName;
    QString fullFileName;
    QString fileName;
    QObject* plugin = nullptr;
    QPluginLoader* pluginLoader = nullptr;
};

class LTSPLUGINLOADER_EXPORT LtsPluginLoader
{
  public:
    static LtsPluginLoader* getInstance();

    void unloadAllPlugins();

    void checkPlugins(const QVector<LtsAppDescriptor::AppDescription>& appVector, QStringList& errors);

    bool loadPlugins(PluginType requestedPluginType,
                     const std::function<bool(const PluginInstance& pluginInstance)>& loadPlugin,
                     const QStringList& requiredPlugins = QStringList(),
                     const QString& specialTopicTypeFilter = QString(),
                     const QStringList& optionalPlugins = QStringList());

    typedef QPair<PluginType, QString> PluginKey;

  private:
    friend struct LtsPluginLoaderHandler;

    LtsPluginLoader() = default;
    ~LtsPluginLoader();

    QMap<PluginKey, PluginInstance> m_loadedPlugins;
};

} // namespace LtsPluginManager