pollymc/launcher/minecraft/mod/Resource.h

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#pragma once
#include <QDateTime>
#include <QFileInfo>
#include <QObject>
#include <QPointer>
#include "QObjectPtr.h"
enum class ResourceType {
UNKNOWN, //!< Indicates an unspecified resource type.
ZIPFILE, //!< The resource is a zip file containing the resource's class files.
SINGLEFILE, //!< The resource is a single file (not a zip file).
FOLDER, //!< The resource is in a folder on the filesystem.
LITEMOD, //!< The resource is a litemod
};
enum class SortType {
NAME,
DATE,
VERSION,
ENABLED,
PACK_FORMAT,
PROVIDER
};
enum class EnableAction {
ENABLE,
DISABLE,
TOGGLE
};
/** General class for managed resources. It mirrors a file in disk, with some more info
* for display and house-keeping purposes.
*
* Subclass it to add additional data / behavior, such as Mods or Resource packs.
*/
class Resource : public QObject {
Q_OBJECT
Q_DISABLE_COPY(Resource)
public:
using Ptr = shared_qobject_ptr<Resource>;
using WeakPtr = QPointer<Resource>;
Resource(QObject* parent = nullptr);
Resource(QFileInfo file_info);
Resource(QString file_path) : Resource(QFileInfo(file_path)) {}
~Resource() override = default;
void setFile(QFileInfo file_info);
void parseFile();
[[nodiscard]] auto fileinfo() const -> QFileInfo { return m_file_info; }
[[nodiscard]] auto dateTimeChanged() const -> QDateTime { return m_changed_date_time; }
[[nodiscard]] auto internal_id() const -> QString { return m_internal_id; }
[[nodiscard]] auto type() const -> ResourceType { return m_type; }
[[nodiscard]] bool enabled() const { return m_enabled; }
[[nodiscard]] virtual auto name() const -> QString { return m_name; }
[[nodiscard]] virtual bool valid() const { return m_type != ResourceType::UNKNOWN; }
/** Compares two Resources, for sorting purposes, considering a ascending order, returning:
* > 0: 'this' comes after 'other'
* = 0: 'this' is equal to 'other'
* < 0: 'this' comes before 'other'
*
* The second argument in the pair is true if the sorting type that decided which one is greater was 'type'.
*/
[[nodiscard]] virtual auto compare(Resource const& other, SortType type = SortType::NAME) const -> std::pair<int, bool>;
/** Returns whether the given filter should filter out 'this' (false),
* or if such filter includes the Resource (true).
*/
[[nodiscard]] virtual bool applyFilter(QRegularExpression filter) const;
/** Changes the enabled property, according to 'action'.
*
* Returns whether a change was applied to the Resource's properties.
*/
bool enable(EnableAction action);
[[nodiscard]] auto shouldResolve() const -> bool { return !m_is_resolving && !m_is_resolved; }
[[nodiscard]] auto isResolving() const -> bool { return m_is_resolving; }
[[nodiscard]] auto isResolved() const -> bool { return m_is_resolved; }
[[nodiscard]] auto resolutionTicket() const -> int { return m_resolution_ticket; }
void setResolving(bool resolving, int resolutionTicket)
{
m_is_resolving = resolving;
m_resolution_ticket = resolutionTicket;
}
// Delete all files of this resource.
bool destroy();
[[nodiscard]] auto isSymLink() const -> bool { return m_file_info.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;
protected:
/* The file corresponding to this resource. */
QFileInfo m_file_info;
/* The cached date when this file was last changed. */
QDateTime m_changed_date_time;
/* Internal ID for internal purposes. Properties such as human-readability should not be assumed. */
QString m_internal_id;
/* Name as reported via the file name. In the absence of a better name, this is shown to the user. */
QString m_name;
/* The type of file we're dealing with. */
ResourceType m_type = ResourceType::UNKNOWN;
/* Whether the resource is enabled (e.g. shows up in the game) or not. */
bool m_enabled = true;
/* Used to keep trach of pending / concluded actions on the resource. */
bool m_is_resolving = false;
bool m_is_resolved = false;
int m_resolution_ticket = 0;
};