/*
 * This file is part of smolbote. It's copyrighted by the contributors recorded
 * in the version control history of the file, available from its original
 * location: https://library.iserlohn-fortress.net/aqua/smolbote.git
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#ifndef SMOLBOTE_SMOLBLOK_HPP
#define SMOLBOTE_SMOLBLOK_HPP

#include "filtermanager.hpp"
#include <QPluginLoader>
#include <QWebEngineUrlRequestInterceptor>
#include <smolbote/filterinterface.hpp>

class smolblok
{
public:
    smolblok() = default;
    ~smolblok()
    {
        for(auto &plugin : m_formats) {
            delete plugin.loader;
        }
    }

    auto registerFormatPlugin(const QString &format, const QString &filename)
    {
        struct {
            bool loaded = false;
            QString error;
        } ret;

        if(format.isEmpty() || filename.isEmpty()) {
            ret.error = "Format or filename is empty";
            return ret;
        }

        auto *plugin = new QPluginLoader(filename);
        if(!plugin->load()) {
            ret.error = plugin->errorString();
            delete plugin;
            return ret;
        }

        auto *instance = qobject_cast<FilterPlugin *>(plugin->instance());
        if(instance == nullptr) {
            ret.error = "Unable to cast";
            delete plugin;
            return ret;
        }

        m_formats[format] = PluginInfo{ plugin, instance };
        ret.loaded = true;
        return ret;
    }

    const auto formats() const
    {
        return m_formats.keys();
    }

    bool addSubscriptions(const QString &filename);
    QWebEngineUrlRequestInterceptor *interceptor()
    {
        return &m_subscriptions;
    }

private:
    struct PluginInfo {
        QPluginLoader *loader = nullptr;
        FilterPlugin *instance = nullptr;
    };

    QHash<QString, PluginInfo> m_formats;
    FilterManager m_subscriptions;
};

#endif // SMOLBOTE_SMOLBLOK_HPP