/** \file SessionLoader.h
\brief Define the session loader
\author alpha_one_x86
\licence GPL3, see the file COPYING */

#include "SessionLoader.h"
#include "LanguagesManager.h"
#include "cpp11addition.h"

#ifndef ULTRACOPIER_VERSION_PORTABLE
SessionLoader::SessionLoader(OptionDialog *optionDialog)
{
    ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"start");
    this->optionDialog=optionDialog;
    //load the options
    connect(OptionEngine::optionEngine,&OptionEngine::newOptionValue,	this,	&SessionLoader::newOptionValue,Qt::QueuedConnection);
    //load the plugin
    PluginsManager::pluginsManager->lockPluginListEdition();
    connect(this,&SessionLoader::previouslyPluginAdded,			this,&SessionLoader::onePluginAdded,Qt::QueuedConnection);
    connect(PluginsManager::pluginsManager,&PluginsManager::onePluginAdded,			this,&SessionLoader::onePluginAdded,Qt::QueuedConnection);
    #ifndef ULTRACOPIER_PLUGIN_ALL_IN_ONE
    connect(PluginsManager::pluginsManager,&PluginsManager::onePluginWillBeRemoved,	this,&SessionLoader::onePluginWillBeRemoved,Qt::DirectConnection);
    #endif
    std::vector<PluginsAvailable> list=PluginsManager::pluginsManager->getPluginsByCategory(PluginType_SessionLoader);
    foreach(PluginsAvailable currentPlugin,list)
        emit previouslyPluginAdded(currentPlugin);
    PluginsManager::pluginsManager->unlockPluginListEdition();
    shouldEnabled=stringtobool(OptionEngine::optionEngine->getOptionValue("SessionLoader","LoadAtSessionStarting"));
}

SessionLoader::~SessionLoader()
{
    #ifndef ULTRACOPIER_PLUGIN_ALL_IN_ONE_DIRECT
    unsigned int index=0;
    while(index<pluginList.size())
    {
        if(pluginList.at(index).pluginLoader!=NULL)
        {
            if(!pluginList.at(index).pluginLoader->isLoaded() || pluginList.at(index).pluginLoader->unload())
            {
                delete pluginList.at(index).options;
                pluginList.erase(pluginList.begin()+index);
            }
        }
        index++;
    }
    #endif
}

void SessionLoader::onePluginAdded(const PluginsAvailable &plugin)
{
    #ifndef ULTRACOPIER_PLUGIN_ALL_IN_ONE_DIRECT
    if(plugin.category!=PluginType_SessionLoader)
        return;
    unsigned int index=0;
    LocalPlugin newEntry;
    std::string pluginPath=plugin.path+PluginsManager::getResolvedPluginName("sessionLoader");
    ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"try load: "+pluginPath);
    #ifdef ULTRACOPIER_PLUGIN_ALL_IN_ONE

        PluginInterface_SessionLoader *sessionLoader;
        QObjectList objectList=QPluginLoader::staticInstances();
        index=0;
        QObject *pluginObject;
        while(index<objectList.size())
        {
            pluginObject=objectList.at(index);
            sessionLoader = qobject_cast<PluginInterface_SessionLoader *>(pluginObject);
            if(sessionLoader!=NULL)
                break;
            index++;
        }
        if(index==objectList.size())
        {
            ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"static session loader not found");
            return;
        }
        newEntry.pluginLoader=NULL;
    #else
    QPluginLoader *pluginLoader= new QPluginLoader(QString::fromStdString(pluginPath));
    newEntry.pluginLoader=pluginLoader;
    QObject *pluginInstance = pluginLoader->instance();
    if(!pluginInstance)
    {
        ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"unable to load the plugin: "+pluginLoader->errorString().toStdString());
        return;
    }
    PluginInterface_SessionLoader *sessionLoader = qobject_cast<PluginInterface_SessionLoader *>(pluginInstance);
    if(!sessionLoader)
    {
        ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"unable to cast the plugin: "+pluginLoader->errorString().toStdString());
        return;
    }
    //check if found
    index=0;
    while(index<pluginList.size())
    {
        if(pluginList.at(index).sessionLoaderInterface==sessionLoader)
        {
            ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"Plugin already found");
            pluginLoader->unload();
            return;
        }
        index++;
    }
    #endif
    #ifdef ULTRACOPIER_DEBUG
    connect(sessionLoader,&PluginInterface_SessionLoader::debugInformation,this,&SessionLoader::debugInformation);
    #endif // ULTRACOPIER_DEBUG
    newEntry.options=new LocalPluginOptions("SessionLoader-"+plugin.name);
    newEntry.sessionLoaderInterface=sessionLoader;
    newEntry.path=plugin.path;
    newEntry.sessionLoaderInterface->setResources(newEntry.options,plugin.writablePath,plugin.path,ULTRACOPIER_VERSION_PORTABLE_BOOL);
    newEntry.sessionLoaderInterface->setEnabled(shouldEnabled);
    optionDialog->addPluginOptionWidget(PluginType_SessionLoader,plugin.name,newEntry.sessionLoaderInterface->options());
    connect(LanguagesManager::languagesManager,&LanguagesManager::newLanguageLoaded,newEntry.sessionLoaderInterface,&PluginInterface_SessionLoader::newLanguageLoaded);
    pluginList.push_back(newEntry);
    #else
        Q_UNUSED(plugin);
        return;
    #endif
}

#ifndef ULTRACOPIER_PLUGIN_ALL_IN_ONE
void SessionLoader::onePluginWillBeRemoved(const PluginsAvailable &plugin)
{
    if(plugin.category!=PluginType_SessionLoader)
        return;
    ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"start");
    unsigned int index=0;
    while(index<pluginList.size())
    {
        if(plugin.path==pluginList.at(index).path)
        {
            if(pluginList.at(index).pluginLoader!=NULL)
            {
                if(!pluginList.at(index).pluginLoader->isLoaded() || pluginList.at(index).pluginLoader->unload())
                {
                    delete pluginList.at(index).options;
                    pluginList.erase(pluginList.begin()+index);
                }
            }
            break;
        }
        index++;
    }
}
#endif

void SessionLoader::newOptionValue(const std::string &groupName,const std::string &variableName,const std::string &value)
{
    if(groupName=="SessionLoader" && variableName=="LoadAtSessionStarting")
    {
        ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"start, value: "+value);
        shouldEnabled=stringtobool(value);
        unsigned int index=0;
        while(index<pluginList.size())
        {
            pluginList.at(index).sessionLoaderInterface->setEnabled(shouldEnabled);
            index++;
        }
    }
}

#ifdef ULTRACOPIER_DEBUG
void SessionLoader::debugInformation(const Ultracopier::DebugLevel &level,const std::string& fonction,const std::string& text,const std::string& file,const int& ligne)
{
    DebugEngine::addDebugInformationStatic(level,fonction,text,file,ligne,"Session loader plugin");
}
#endif // ULTRACOPIER_DEBUG
#endif // !defined(ULTRACOPIER_PLUGIN_ALL_IN_ONE) || !defined(ULTRACOPIER_VERSION_PORTABLE)