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#pragma once
#include <QObject>
#include <QString>
#include <QMap>
#include "BaseInstance.h"
#include "settings/SettingsObject.h"
#include "multimc_logic_export.h"
class QFileSystemWatcher;
class InstanceTask;
using InstanceId = QString;
using GroupId = QString;
using InstanceLocator = std::pair<InstancePtr, int>;
enum class InstCreateError
{
NoCreateError = 0,
NoSuchVersion,
UnknownCreateError,
InstExists,
CantCreateDir
};
class MULTIMC_LOGIC_EXPORT FolderInstanceProvider : public QObject
{
Q_OBJECT
public:
FolderInstanceProvider(SettingsObjectPtr settings, const QString & instDir);
virtual ~FolderInstanceProvider() = default;
public:
/// used by InstanceList to @return a list of plausible IDs to probe for
QList<InstanceId> discoverInstances();
/// used by InstanceList to (re)load an instance with the given @id.
InstancePtr loadInstance(const InstanceId& id);
// Wrap an instance creation task in some more task machinery and make it ready to be used
Task * wrapInstanceTask(InstanceTask * task);
/**
* Create a new empty staging area for instance creation and @return a path/key top commit it later.
* Used by instance manipulation tasks.
*/
QString getStagedInstancePath();
/**
* Commit the staging area given by @keyPath to the provider - used when creation succeeds.
* Used by instance manipulation tasks.
*/
bool commitStagedInstance(const QString & keyPath, const QString& instanceName, const QString & groupName);
/**
* Destroy a previously created staging area given by @keyPath - used when creation fails.
* Used by instance manipulation tasks.
*/
bool destroyStagingPath(const QString & keyPath);
signals:
// Emit this when the list of provided instances changed
void instancesChanged();
// Emit when the set of groups your provider supplies changes.
void groupsChanged(QSet<QString> groups);
public slots:
void on_InstFolderChanged(const Setting &setting, QVariant value);
private slots:
void instanceDirContentsChanged(const QString &path);
void groupChanged();
private: /* methods */
void loadGroupList();
void saveGroupList();
private: /* data */
SettingsObjectPtr m_globalSettings;
QString m_instDir;
QFileSystemWatcher * m_watcher;
QMap<InstanceId, GroupId> groupMap;
QSet<InstanceId> instanceSet;
bool m_groupsLoaded = false;
bool m_instancesProbed = false;
};
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