#include "LogManager.h"
#include "PluginManager.h"

PluginManager::PluginManager(bool dark_theme_val)
{
    dark_theme = dark_theme_val;
}

void PluginManager::RegisterAddPluginTabCallback(AddPluginTabCallback new_callback, void * new_callback_arg)
{
    AddPluginTabCallbacks.push_back(new_callback);
    AddPluginTabCallbackArgs.push_back(new_callback_arg);
}

void PluginManager::ScanAndLoadPlugins()
{
    LOG_INFO("Loading plugins");

    /*---------------------------------------------------------*\
    | Get the plugins directory                                 |
    |                                                           |
    | The plugins directory is a directory named "plugins" in   |
    | the configuration directory                               |
    \*---------------------------------------------------------*/
    const QDir plugins_dir = QString().fromStdString(ResourceManager::get()->GetConfigurationDirectory()) + "plugins/";

    /*---------------------------------------------------------*\
    | Get a list of all files in the plugins directory          |
    \*---------------------------------------------------------*/
    std::vector<std::string> FileList;

    for(int i = 0; i < QDir(plugins_dir).entryList(QDir::Files).size(); i++)
    {
        FileList.push_back(QDir(plugins_dir).entryList(QDir::Files)[i].toStdString());
    }

    /*---------------------------------------------------------*\
    | Attempt to load each file in the plugins directory        |
    \*---------------------------------------------------------*/
    for(const std::string &plugin_name : FileList)
    {
        const std::string plugin_path = plugins_dir.absoluteFilePath(QString().fromStdString(plugin_name)).toStdString();

        LoadPlugin(plugin_path);
    }
}

void PluginManager::LoadPlugin(std::string path)
{
    OpenRGBPluginInterface* plugin = nullptr;

    LOG_VERBOSE("Attempting to load: %s", path.c_str());

    /*-----------------------------------------------------------------*\
    | Create a QPluginLoader and load the plugin                        |
    \*-----------------------------------------------------------------*/
    QPluginLoader   loader(QString().fromStdString(path));
    QObject*        instance = loader.instance();

    /*-----------------------------------------------------------------*\
    | Check that the plugin is valid, then check the API version        |
    \*-----------------------------------------------------------------*/
    if(instance)
    {
        plugin = qobject_cast<OpenRGBPluginInterface*>(instance);

        if(plugin)
        {
            if(plugin->GetPluginAPIVersion() == OPENRGB_PLUGIN_API_VERSION)
            {
                /*-----------------------------------------------------*\
                | Get the plugin information                            |
                \*-----------------------------------------------------*/
                OpenRGBPluginInfo info = plugin->GetPluginInfo();

                /*-----------------------------------------------------*\
                | Search the settings to see if it is enabled           |
                \*-----------------------------------------------------*/
                std::string     name        = "";
                std::string     description = "";
                bool            enabled     = true;
                bool            found       = false;
                unsigned int    plugin_ct   = 0;

                /*-----------------------------------------------------*\
                | Open plugin list and check if plugin is in the list   |
                \*-----------------------------------------------------*/
                json plugin_settings = ResourceManager::get()->GetSettingsManager()->GetSettings("Plugins");

                if(plugin_settings.contains("plugins"))
                {
                    plugin_ct = plugin_settings["plugins"].size();

                    for(unsigned int plugin_idx = 0; plugin_idx < plugin_settings["plugins"].size(); plugin_idx++)
                    {
                        if(plugin_settings["plugins"][plugin_idx].contains("name"))
                        {
                            name        = plugin_settings["plugins"][plugin_idx]["name"];
                        }

                        if(plugin_settings["plugins"][plugin_idx].contains("description"))
                        {
                            description = plugin_settings["plugins"][plugin_idx]["description"];
                        }

                        if(plugin_settings["plugins"][plugin_idx].contains("enabled"))
                        {
                            enabled     = plugin_settings["plugins"][plugin_idx]["enabled"];
                        }

                        if((info.Name == name)
                         &&(info.Description == description))
                        {
                            found = true;
                            break;
                        }
                    }
                }

                /*-----------------------------------------------------*\
                | If the plugin was not in the list, add it to the list |
                | and default it to enabled, then save the settings     |
                \*-----------------------------------------------------*/
                if(!found)
                {
                    plugin_settings["plugins"][plugin_ct]["name"]           = info.Name;
                    plugin_settings["plugins"][plugin_ct]["description"]    = info.Description;
                    plugin_settings["plugins"][plugin_ct]["enabled"]        = enabled;

                    ResourceManager::get()->GetSettingsManager()->SetSettings("Plugins", plugin_settings);
                    ResourceManager::get()->GetSettingsManager()->SaveSettings();
                }

                LOG_VERBOSE("Loaded plugin %s", info.Name.c_str());

                /*-----------------------------------------------------*\
                | Add the plugin to the PluginManager active plugins    |
                \*-----------------------------------------------------*/
                OpenRGBPluginEntry entry;

                entry.info    = info;
                entry.plugin  = plugin;
                entry.path    = path;
                entry.enabled = enabled;

                PluginManager::ActivePlugins.push_back(entry);

                /*-----------------------------------------------------*\
                | If the plugin is enabled, load it                     |
                \*-----------------------------------------------------*/
                if(enabled)
                {
                    /*-------------------------------------------------*\
                    | Initialize the plugin                             |
                    \*-------------------------------------------------*/
                    plugin->Initialize(dark_theme, ResourceManager::get());

                    /*-------------------------------------------------*\
                    | Call the callbacks                                |
                    \*-------------------------------------------------*/
                    for(unsigned int callback_idx = 0; callback_idx < AddPluginTabCallbacks.size(); callback_idx++)
                    {
                        AddPluginTabCallbacks[callback_idx](AddPluginTabCallbackArgs[callback_idx], entry);
                    }
                }
                else
                {
                    delete instance;
                    loader.unload();
                }
            }
        }
    }
    else
    {
        std::cout << loader.errorString().toStdString() << std::endl;
    }
}