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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <QString>
#include <map>
#include <set>
#include <QStringList>
#include "tasks/Task.h"
namespace mojang_files
{
using Hash = QString;
extern const Hash empty_hash;
// simple-ish path implementation. assumes always relative and does not
// allow '..' entries
class Path
{
public:
using parts_type = QStringList;
Path() = default;
Path(QString string)
{ // NOLINT(IMPLICIT_CONSTRUCTOR)
auto parts_in = string.split('/');
for (auto& part : parts_in) {
if (part.isEmpty() || part == ".") {
continue;
}
if (part == "..") {
if (parts.size()) {
parts.pop_back();
}
continue;
}
parts.push_back(part);
}
}
bool has_parent_path() const
{
return parts.size() > 0;
}
Path parent_path() const
{
if (parts.empty())
return Path();
return Path(parts.begin(), std::prev(parts.end()));
}
bool empty() const
{
return parts.empty();
}
int length() const
{
return parts.length();
}
bool operator==(const Path& rhs) const
{
return parts == rhs.parts;
}
bool operator!=(const Path& rhs) const
{
return parts != rhs.parts;
}
inline bool operator<(const Path& rhs) const
{
return compare(rhs) < 0;
}
parts_type::const_iterator begin() const
{
return parts.begin();
}
parts_type::const_iterator end() const
{
return parts.end();
}
QString toString() const
{
return parts.join("/");
}
private:
Path(const parts_type::const_iterator& start,
const parts_type::const_iterator& end)
{
auto cursor = start;
while (cursor != end) {
parts.push_back(*cursor);
cursor++;
}
}
int compare(const Path& p) const;
parts_type parts;
};
enum class Compression { Raw, Lzma, Unknown };
struct FileSource {
Compression compression = Compression::Unknown;
Hash hash;
QString url;
std::size_t size = 0;
void upgrade(const FileSource& other)
{
if (compression == Compression::Unknown || other.size < size) {
*this = other;
}
}
bool isBad() const
{
return compression == Compression::Unknown;
}
};
struct File {
Hash hash;
bool executable;
std::uint64_t size = 0;
};
struct Package {
static Package fromInspectedFolder(const QString& folderPath);
static Package fromManifestFile(const QString& path);
static Package fromManifestContents(const QByteArray& contents);
explicit operator bool() const
{
return valid;
}
void addFolder(Path folder);
void addFile(const Path& path, const File& file);
void addLink(const Path& path, const Path& target);
void addSource(const FileSource& source);
std::map<Hash, FileSource> sources;
bool valid = true;
std::set<Path> folders;
std::map<Path, File> files;
std::map<Path, Path> symlinks;
};
struct FileDownload : FileSource {
FileDownload(const FileSource& source, bool executable)
{
static_cast<FileSource&>(*this) = source;
this->executable = executable;
}
bool executable = false;
};
struct UpdateOperations {
static UpdateOperations resolve(const Package& from, const Package& to);
bool valid = false;
std::vector<Path> deletes;
std::vector<Path> rmdirs;
std::vector<Path> mkdirs;
std::map<Path, FileDownload> downloads;
std::map<Path, Path> mklinks;
std::map<Path, bool> executable_fixes;
};
} // namespace mojang_files
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