// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2026 A-La-Karte Contributors

#include "itchimporter.h"

#include <QDir>
#include <QFile>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QSqlDatabase>
#include <QSqlError>
#include <QSqlQuery>

ItchImporter::ItchImporter(QObject *parent)
    : PlatformImporter(parent)
{
}

QString ItchImporter::platformName() const
{
    return QStringLiteral("itch.io");
}

QString ItchImporter::platformId() const
{
    return QStringLiteral("itch");
}

QString ItchImporter::getItchDatabasePath() const
{
    QStringList paths = {
        expandPath(QStringLiteral("~/.config/itch/db/butler.db")),
        expandPath(QStringLiteral("~/.var/app/io.itch.itch/config/itch/db/butler.db")),
    };

    for (const QString &path : paths) {
        if (QFile::exists(path)) {
            return path;
        }
    }

    return QString();
}

bool ItchImporter::isAvailable() const
{
    return !getItchDatabasePath().isEmpty();
}

QList<Game *> ItchImporter::parseItchDatabase(const QString &dbPath) const
{
    QList<Game *> games;

    // Use a unique connection name
    QString connectionName = QStringLiteral("itch_import_%1").arg(reinterpret_cast<quintptr>(this));

    {
        QSqlDatabase db = QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"), connectionName);
        db.setDatabaseName(dbPath);

        if (!db.open()) {
            return games;
        }

        // Query caves table for installed games
        QSqlQuery query(db);
        query.prepare(
            QStringLiteral("SELECT c.id, c.game_id, g.title, g.short_text, g.cover_url, c.install_folder_name "
                           "FROM caves c "
                           "LEFT JOIN games g ON c.game_id = g.id "
                           "WHERE c.install_folder_name IS NOT NULL"));

        if (!query.exec()) {
            db.close();
            return games;
        }

        while (query.next()) {
            QString caveId = query.value(0).toString();
            QString gameId = query.value(1).toString();
            QString title = query.value(2).toString();
            QString shortText = query.value(3).toString();
            QString coverUrl = query.value(4).toString();
            QString installFolder = query.value(5).toString();

            if (title.isEmpty()) {
                continue;
            }

            QString id = QStringLiteral("itch_%1").arg(gameId);

            Game *game = new Game(id, title);
            game->setPlatform(platformName());
            game->setPlatformId(platformId());

            if (!shortText.isEmpty()) {
                game->setDescription(shortText);
            }

            if (!coverUrl.isEmpty()) {
                game->setCoverUrl(QUrl(coverUrl));
            }

            // Build launch command using itch app
            QString launchCmd = QStringLiteral("itch://caves/%1/launch").arg(caveId);
            game->setLaunchCommand(QStringLiteral("xdg-open \"%1\"").arg(launchCmd));

            games.append(game);
        }

        db.close();
    }

    QSqlDatabase::removeDatabase(connectionName);

    return games;
}

QList<Game *> ItchImporter::importGames()
{
    QString dbPath = getItchDatabasePath();
    if (dbPath.isEmpty()) {
        return {};
    }

    return parseItchDatabase(dbPath);
}