/* Copyright 2015-2021 MultiMC Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once
#include <QDateTime>
#include <QFileInfo>
#include <optional>

struct GameType {
    GameType() = default;
    GameType(std::optional<int> original);

    QString toTranslatedString() const;
    QString toLogString() const;

    enum { Unknown = -1, Survival, Creative, Adventure, Spectator } type = Unknown;
    std::optional<int> original;
};

class World {
   public:
    World(const QFileInfo& file);
    QString folderName() const { return m_folderName; }
    QString name() const { return m_actualName; }
    QString iconFile() const { return m_iconFile; }
    int64_t bytes() const { return m_size; }
    QDateTime lastPlayed() const { return m_lastPlayed; }
    GameType gameType() const { return m_gameType; }
    int64_t seed() const { return m_randomSeed; }
    bool isValid() const { return is_valid; }
    bool isOnFS() const { return m_containerFile.isDir(); }
    QFileInfo container() const { return m_containerFile; }
    // delete all the files of this world
    bool destroy();
    // replace this world with a copy of the other
    bool replace(World& with);
    // change the world's filesystem path (used by world lists for *MAGIC* purposes)
    void repath(const QFileInfo& file);
    // remove the icon file, if any
    bool resetIcon();

    bool rename(const QString& to);
    bool install(const QString& to, const QString& name = QString());

    // WEAK compare operator - used for replacing worlds
    bool operator==(const World& other) const;

    [[nodiscard]] auto isSymLink() const -> bool { return m_containerFile.isSymLink(); }

    /**
     * @brief Take a instance path, checks if the file pointed to by the resource is a symlink or under a symlink in that instance
     *
     * @param instPath path to an instance directory
     * @return true
     * @return false
     */
    [[nodiscard]] bool isSymLinkUnder(const QString& instPath) const;

    [[nodiscard]] bool isMoreThanOneHardLink() const;

    QString canonicalFilePath() const { return m_containerFile.canonicalFilePath(); }

   private:
    void readFromZip(const QFileInfo& file);
    void readFromFS(const QFileInfo& file);
    void loadFromLevelDat(QByteArray data);

   protected:
    QFileInfo m_containerFile;
    QString m_containerOffsetPath;
    QString m_folderName;
    QString m_actualName;
    QString m_iconFile;
    QDateTime levelDatTime;
    QDateTime m_lastPlayed;
    int64_t m_size;
    int64_t m_randomSeed = 0;
    GameType m_gameType;
    bool is_valid = false;
};