pollymc/api/logic/updater/GoUpdate.h

#pragma once
#include <QByteArray>
#include <net/NetJob.h>

#include "multimc_logic_export.h"

namespace GoUpdate
{

/**
 * A temporary object exchanged between updated checker and the actual update task
 */
struct MULTIMC_LOGIC_EXPORT Status
{
    bool updateAvailable = false;

    int newVersionId = -1;
    QString newRepoUrl;

    int currentVersionId = -1;
    QString currentRepoUrl;

    // path to the root of the application
    QString rootPath;
};

/**
 * Struct that describes an entry in a VersionFileEntry's `Sources` list.
 */
struct MULTIMC_LOGIC_EXPORT FileSource
{
    FileSource(QString type, QString url, QString compression="")
    {
        this->type = type;
        this->url = url;
        this->compressionType = compression;
    }

    bool operator==(const FileSource &f2) const
    {
        return type == f2.type && url == f2.url && compressionType == f2.compressionType;
    }

    QString type;
    QString url;
    QString compressionType;
};
typedef QList<FileSource> FileSourceList;

/**
 * Structure that describes an entry in a GoUpdate version's `Files` list.
 */
struct MULTIMC_LOGIC_EXPORT VersionFileEntry
{
    QString path;
    int mode;
    FileSourceList sources;
    QString md5;
    bool operator==(const VersionFileEntry &v2) const
    {
        return path == v2.path && mode == v2.mode && sources == v2.sources && md5 == v2.md5;
    }
};
typedef QList<VersionFileEntry> VersionFileList;

/**
 * Structure that describes an operation to perform when installing updates.
 */
struct MULTIMC_LOGIC_EXPORT Operation
{
    static Operation CopyOp(QString from, QString to, int fmode=0644)
    {
        return Operation{OP_REPLACE, from, to, fmode};
    }
    static Operation DeleteOp(QString file)
    {
        return Operation{OP_DELETE, QString(), file, 0644};
    }

    // FIXME: for some types, some of the other fields are irrelevant!
    bool operator==(const Operation &u2) const
    {
        return type == u2.type &&
            source == u2.source &&
            destination == u2.destination &&
            destinationMode == u2.destinationMode;
    }

    //! Specifies the type of operation that this is.
    enum Type
    {
        OP_REPLACE,
        OP_DELETE,
    } type;

    //! The source file, if any
    QString source;

    //! The destination file.
    QString destination;

    //! The mode to change the destination file to.
    int destinationMode;
};
typedef QList<Operation> OperationList;

/**
 * Loads the file list from the given version info JSON object into the given list.
 */
bool MULTIMC_LOGIC_EXPORT parseVersionInfo(const QByteArray &data, VersionFileList& list, QString &error);

/*!
 * Takes a list of file entries for the current version's files and the new version's files
 * and populates the downloadList and operationList with information about how to download and install the update.
 */
bool MULTIMC_LOGIC_EXPORT processFileLists
(
    const VersionFileList &currentVersion,
    const VersionFileList &newVersion,
    const QString &rootPath,
    const QString &tempPath,
    NetJobPtr job,
    OperationList &ops
);

/*!
 * This fixes destination paths for OSX - removes 'MultiMC.app' prefix
 * The updater runs in MultiMC.app/Contents/MacOs by default
 * The destination paths are such as this: MultiMC.app/blah/blah
 *
 * @return false if the path couldn't be fixed (is invalid)
 */
bool MULTIMC_LOGIC_EXPORT fixPathForOSX(QString &path);

}
Q_DECLARE_METATYPE(GoUpdate::Status)