#include <QCoreApplication>
#include <QStandardPaths>
#include <QDir>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <iostream>

#include "version2upgrader.h"
#include "version3upgrader.h"
#include "version4upgrader.h"

#define SAVE_FILENAME "data.json"



QString get_save_file_path() {
    QString path = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
    if (!QDir(path).exists()) {
        QDir().mkpath(path);
    }
    path += "/data/";
    if (!QDir(path).exists()) {
        QDir().mkpath(path);
    }
    path += SAVE_FILENAME;
    return path;
}

QJsonObject open_save() {
    QFile* file = new QFile(get_save_file_path());
    file->open(QIODevice::ReadOnly);
    auto json = QString(file->readAll());
    file->close();
    delete file;
    return QJsonDocument::fromJson(json.toUtf8()).object();
}

void save_to_file(QJsonObject save) {
    QJsonDocument doc(save);
    QFile *f = new QFile(get_save_file_path());
    if (f->open(QIODevice::WriteOnly)) {
        f->write(doc.toJson());
        f->close();
    }
    delete f;
}

int main(int argc, char *argv[])
{
    std::cout << "Chronos Save Upgrader v2.1" << std::endl;
    std::cout << "by Aurélie Delhaie - https://github.com/mojitaurelie/chronos-save-updater" << std::endl << std::endl;
    QCoreApplication::setApplicationName("Chronos");
    QJsonObject save = open_save();
    switch (save["version"].toInt()) {
        case 1: {
            std::cout << "[INFO] Upgrading to version 2" << std::endl;
            save = Version2Upgrader::Upgrade(save);
            std::cout << "[INFO] Save upgraded to version 2" << std::endl;
        }
        case 2: {
            std::cout << "[INFO] Upgrading to version 3" << std::endl;
            save = Version3Upgrader::Upgrade(save);
            std::cout << "[INFO] Save upgraded to version 3" << std::endl;
        }
        case 3: {
            std::cout << "[INFO] Upgrading to version 4" << std::endl;
            save = Version4Upgrader::Upgrade(save);
            std::cout << "[INFO] Save upgraded to version 4" << std::endl;
        }
    }
    std::cout << "[INFO] Saving..." << std::endl;
    save_to_file(save);
    std::cout << "[INFO] Saved" << std::endl;
    return 0;
}