Merge pull request #904 from TheKodeToad/mrpack-export

mrpack export

16 files changed, 1172 insertions, 318 deletions

diff --git a/buildconfig/BuildConfig.h b/buildconfig/BuildConfig.h
index a05d7a9e..8543d724 100644
--- a/buildconfig/BuildConfig.h
+++ b/buildconfig/BuildConfig.h
@@ -1,8 +1,9 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
- *  PolyMC - Minecraft Launcher
+ *  Prism Launcher - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
  *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
  *
  *  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
@@ -36,6 +37,7 @@
 
 #pragma once
 #include <QString>
+#include <QList>
 
 /**
  * \brief The Config class holds all the build-time information passed from the build system.
@@ -160,6 +162,7 @@ class Config {
 
     QString MODRINTH_STAGING_URL = "https://staging-api.modrinth.com/v2";
     QString MODRINTH_PROD_URL = "https://api.modrinth.com/v2";
+    QStringList MODRINTH_MRPACK_HOSTS{"cdn.modrinth.com", "github.com", "raw.githubusercontent.com", "gitlab.com"};
 
     QString FLAME_BASE_URL = "https://api.curseforge.com/v1";
 
diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index 273b5449..ce2771a4 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -525,6 +525,8 @@ set(MODRINTH_SOURCES
     modplatform/modrinth/ModrinthCheckUpdate.h
     modplatform/modrinth/ModrinthInstanceCreationTask.cpp
     modplatform/modrinth/ModrinthInstanceCreationTask.h
+    modplatform/modrinth/ModrinthPackExportTask.cpp
+    modplatform/modrinth/ModrinthPackExportTask.h
 )
 
 set(PACKWIZ_SOURCES
@@ -720,6 +722,10 @@ SET(LAUNCHER_SOURCES
     # FIXME: maybe find a better home for this.
     SkinUtils.cpp
     SkinUtils.h
+    FileIgnoreProxy.cpp
+    FileIgnoreProxy.h
+    FastFileIconProvider.cpp
+    FastFileIconProvider.h
 
     # GUI - setup wizard
     ui/setupwizard/SetupWizard.h
@@ -900,6 +906,8 @@ SET(LAUNCHER_SOURCES
     ui/dialogs/EditAccountDialog.h
     ui/dialogs/ExportInstanceDialog.cpp
     ui/dialogs/ExportInstanceDialog.h
+    ui/dialogs/ExportMrPackDialog.cpp
+    ui/dialogs/ExportMrPackDialog.h
     ui/dialogs/IconPickerDialog.cpp
     ui/dialogs/IconPickerDialog.h
     ui/dialogs/ImportResourceDialog.cpp
@@ -1046,6 +1054,7 @@ qt_wrap_ui(LAUNCHER_UI
     ui/dialogs/ProfileSelectDialog.ui
     ui/dialogs/SkinUploadDialog.ui
     ui/dialogs/ExportInstanceDialog.ui
+    ui/dialogs/ExportMrPackDialog.ui
     ui/dialogs/IconPickerDialog.ui
     ui/dialogs/ImportResourceDialog.ui
     ui/dialogs/MSALoginDialog.ui
diff --git a/launcher/FastFileIconProvider.cpp b/launcher/FastFileIconProvider.cpp
new file mode 100644
index 00000000..f2b6f442
--- /dev/null
+++ b/launcher/FastFileIconProvider.cpp
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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/>.
+ */
+
+#include "FastFileIconProvider.h"
+
+#include <QApplication>
+#include <QStyle>
+
+QIcon FastFileIconProvider::icon(const QFileInfo& info) const
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 4, 0)
+    bool link = info.isSymbolicLink() || info.isAlias() || info.isShortcut();
+#else
+    // in versions prior to 6.4 we don't have access to isAlias
+    bool link = info.isSymLink();
+#endif
+    QStyle::StandardPixmap icon;
+
+    if (info.isDir()) {
+        if (link)
+            icon = QStyle::SP_DirLinkIcon;
+        else
+            icon = QStyle::SP_DirIcon;
+    } else {
+        if (link)
+            icon = QStyle::SP_FileLinkIcon;
+        else
+            icon = QStyle::SP_FileIcon;
+    }
+
+    return QApplication::style()->standardIcon(icon);
+}
\ No newline at end of file
diff --git a/launcher/FastFileIconProvider.h b/launcher/FastFileIconProvider.h
new file mode 100644
index 00000000..20853404
--- /dev/null
+++ b/launcher/FastFileIconProvider.h
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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 <QFileIconProvider>
+
+class FastFileIconProvider : public QFileIconProvider {
+   public:
+    QIcon icon(const QFileInfo& info) const override;
+};
\ No newline at end of file
diff --git a/launcher/FileIgnoreProxy.cpp b/launcher/FileIgnoreProxy.cpp
new file mode 100644
index 00000000..a3b7d505
--- /dev/null
+++ b/launcher/FileIgnoreProxy.cpp
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 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.
+ */
+
+#include "FileIgnoreProxy.h"
+
+#include <QDebug>
+#include <QFileSystemModel>
+#include <QSortFilterProxyModel>
+#include <QStack>
+#include "FileSystem.h"
+#include "SeparatorPrefixTree.h"
+#include "StringUtils.h"
+
+FileIgnoreProxy::FileIgnoreProxy(QString root, QObject* parent) : QSortFilterProxyModel(parent), root(root) {}
+// NOTE: Sadly, we have to do sorting ourselves.
+bool FileIgnoreProxy::lessThan(const QModelIndex& left, const QModelIndex& right) const
+{
+    QFileSystemModel* fsm = qobject_cast<QFileSystemModel*>(sourceModel());
+    if (!fsm) {
+        return QSortFilterProxyModel::lessThan(left, right);
+    }
+    bool asc = sortOrder() == Qt::AscendingOrder ? true : false;
+
+    QFileInfo leftFileInfo = fsm->fileInfo(left);
+    QFileInfo rightFileInfo = fsm->fileInfo(right);
+
+    if (!leftFileInfo.isDir() && rightFileInfo.isDir()) {
+        return !asc;
+    }
+    if (leftFileInfo.isDir() && !rightFileInfo.isDir()) {
+        return asc;
+    }
+
+    // sort and proxy model breaks the original model...
+    if (sortColumn() == 0) {
+        return StringUtils::naturalCompare(leftFileInfo.fileName(), rightFileInfo.fileName(), Qt::CaseInsensitive) < 0;
+    }
+    if (sortColumn() == 1) {
+        auto leftSize = leftFileInfo.size();
+        auto rightSize = rightFileInfo.size();
+        if ((leftSize == rightSize) || (leftFileInfo.isDir() && rightFileInfo.isDir())) {
+            return StringUtils::naturalCompare(leftFileInfo.fileName(), rightFileInfo.fileName(), Qt::CaseInsensitive) < 0 ? asc : !asc;
+        }
+        return leftSize < rightSize;
+    }
+    return QSortFilterProxyModel::lessThan(left, right);
+}
+
+Qt::ItemFlags FileIgnoreProxy::flags(const QModelIndex& index) const
+{
+    if (!index.isValid())
+        return Qt::NoItemFlags;
+
+    auto sourceIndex = mapToSource(index);
+    Qt::ItemFlags flags = sourceIndex.flags();
+    if (index.column() == 0) {
+        flags |= Qt::ItemIsUserCheckable;
+        if (sourceIndex.model()->hasChildren(sourceIndex)) {
+            flags |= Qt::ItemIsAutoTristate;
+        }
+    }
+
+    return flags;
+}
+
+QVariant FileIgnoreProxy::data(const QModelIndex& index, int role) const
+{
+    QModelIndex sourceIndex = mapToSource(index);
+
+    if (index.column() == 0 && role == Qt::CheckStateRole) {
+        QFileSystemModel* fsm = qobject_cast<QFileSystemModel*>(sourceModel());
+        auto blockedPath = relPath(fsm->filePath(sourceIndex));
+        auto cover = blocked.cover(blockedPath);
+        if (!cover.isNull()) {
+            return QVariant(Qt::Unchecked);
+        } else if (blocked.exists(blockedPath)) {
+            return QVariant(Qt::PartiallyChecked);
+        } else {
+            return QVariant(Qt::Checked);
+        }
+    }
+
+    return sourceIndex.data(role);
+}
+
+bool FileIgnoreProxy::setData(const QModelIndex& index, const QVariant& value, int role)
+{
+    if (index.column() == 0 && role == Qt::CheckStateRole) {
+        Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
+        return setFilterState(index, state);
+    }
+
+    QModelIndex sourceIndex = mapToSource(index);
+    return QSortFilterProxyModel::sourceModel()->setData(sourceIndex, value, role);
+}
+
+QString FileIgnoreProxy::relPath(const QString& path) const
+{
+    return QDir(root).relativeFilePath(path);
+}
+
+bool FileIgnoreProxy::setFilterState(QModelIndex index, Qt::CheckState state)
+{
+    QFileSystemModel* fsm = qobject_cast<QFileSystemModel*>(sourceModel());
+
+    if (!fsm) {
+        return false;
+    }
+
+    QModelIndex sourceIndex = mapToSource(index);
+    auto blockedPath = relPath(fsm->filePath(sourceIndex));
+    bool changed = false;
+    if (state == Qt::Unchecked) {
+        // blocking a path
+        auto& node = blocked.insert(blockedPath);
+        // get rid of all blocked nodes below
+        node.clear();
+        changed = true;
+    } else if (state == Qt::Checked || state == Qt::PartiallyChecked) {
+        if (!blocked.remove(blockedPath)) {
+            auto cover = blocked.cover(blockedPath);
+            qDebug() << "Blocked by cover" << cover;
+            // uncover
+            blocked.remove(cover);
+            // block all contents, except for any cover
+            QModelIndex rootIndex = fsm->index(FS::PathCombine(root, cover));
+            QModelIndex doing = rootIndex;
+            int row = 0;
+            QStack<QModelIndex> todo;
+            while (1) {
+                auto node = fsm->index(row, 0, doing);
+                if (!node.isValid()) {
+                    if (!todo.size()) {
+                        break;
+                    } else {
+                        doing = todo.pop();
+                        row = 0;
+                        continue;
+                    }
+                }
+                auto relpath = relPath(fsm->filePath(node));
+                if (blockedPath.startsWith(relpath))  // cover found?
+                {
+                    // continue processing cover later
+                    todo.push(node);
+                } else {
+                    // or just block this one.
+                    blocked.insert(relpath);
+                }
+                row++;
+            }
+        }
+        changed = true;
+    }
+    if (changed) {
+        // update the thing
+        emit dataChanged(index, index, { Qt::CheckStateRole });
+        // update everything above index
+        QModelIndex up = index.parent();
+        while (1) {
+            if (!up.isValid())
+                break;
+            emit dataChanged(up, up, { Qt::CheckStateRole });
+            up = up.parent();
+        }
+        // and everything below the index
+        QModelIndex doing = index;
+        int row = 0;
+        QStack<QModelIndex> todo;
+        while (1) {
+            auto node = this->index(row, 0, doing);
+            if (!node.isValid()) {
+                if (!todo.size()) {
+                    break;
+                } else {
+                    doing = todo.pop();
+                    row = 0;
+                    continue;
+                }
+            }
+            emit dataChanged(node, node, { Qt::CheckStateRole });
+            todo.push(node);
+            row++;
+        }
+        // siblings and unrelated nodes are ignored
+    }
+    return true;
+}
+
+bool FileIgnoreProxy::shouldExpand(QModelIndex index)
+{
+    QModelIndex sourceIndex = mapToSource(index);
+    QFileSystemModel* fsm = qobject_cast<QFileSystemModel*>(sourceModel());
+    if (!fsm) {
+        return false;
+    }
+    auto blockedPath = relPath(fsm->filePath(sourceIndex));
+    auto found = blocked.find(blockedPath);
+    if (found) {
+        return !found->leaf();
+    }
+    return false;
+}
+
+void FileIgnoreProxy::setBlockedPaths(QStringList paths)
+{
+    beginResetModel();
+    blocked.clear();
+    blocked.insert(paths);
+    endResetModel();
+}
+
+bool FileIgnoreProxy::filterAcceptsColumn(int source_column, const QModelIndex& source_parent) const
+{
+    Q_UNUSED(source_parent)
+
+    // adjust the columns you want to filter out here
+    // return false for those that will be hidden
+    if (source_column == 2 || source_column == 3)
+        return false;
+
+    return true;
+}
diff --git a/launcher/FileIgnoreProxy.h b/launcher/FileIgnoreProxy.h
new file mode 100644
index 00000000..a5a1153d
--- /dev/null
+++ b/launcher/FileIgnoreProxy.h
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 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 <QSortFilterProxyModel>
+#include "SeparatorPrefixTree.h"
+
+class FileIgnoreProxy : public QSortFilterProxyModel {
+    Q_OBJECT
+
+   public:
+    FileIgnoreProxy(QString root, QObject* parent);
+    // NOTE: Sadly, we have to do sorting ourselves.
+    bool lessThan(const QModelIndex& left, const QModelIndex& right) const;
+
+    virtual Qt::ItemFlags flags(const QModelIndex& index) const;
+
+    virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const;
+    virtual bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole);
+
+    QString relPath(const QString& path) const;
+
+    bool setFilterState(QModelIndex index, Qt::CheckState state);
+
+    bool shouldExpand(QModelIndex index);
+
+    void setBlockedPaths(QStringList paths);
+
+    inline const SeparatorPrefixTree<'/'>& blockedPaths() const { return blocked; }
+    inline SeparatorPrefixTree<'/'>& blockedPaths() { return blocked; }
+
+   protected:
+    bool filterAcceptsColumn(int source_column, const QModelIndex& source_parent) const;
+
+   private:
+    const QString root;
+    SeparatorPrefixTree<'/'> blocked;
+};
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
new file mode 100644
index 00000000..29df90dd
--- /dev/null
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
@@ -0,0 +1,323 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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/>.
+ */
+
+#include "ModrinthPackExportTask.h"
+
+#include <QCryptographicHash>
+#include <QFileInfo>
+#include <QMessageBox>
+#include <QtConcurrentRun>
+#include "Json.h"
+#include "MMCZip.h"
+#include "minecraft/PackProfile.h"
+#include "minecraft/mod/ModFolderModel.h"
+
+const QStringList ModrinthPackExportTask::PREFIXES({ "mods", "coremods", "resourcepacks", "texturepacks", "shaderpacks" });
+const QStringList ModrinthPackExportTask::FILE_EXTENSIONS({ "jar", "litemod", "zip" });
+
+ModrinthPackExportTask::ModrinthPackExportTask(const QString& name,
+                                               const QString& version,
+                                               const QString& summary,
+                                               InstancePtr instance,
+                                               const QString& output,
+                                               MMCZip::FilterFunction filter)
+    : name(name)
+    , version(version)
+    , summary(summary)
+    , instance(instance)
+    , mcInstance(dynamic_cast<MinecraftInstance*>(instance.get()))
+    , gameRoot(instance->gameRoot())
+    , output(output)
+    , filter(filter)
+{}
+
+void ModrinthPackExportTask::executeTask()
+{
+    setStatus(tr("Searching for files..."));
+    setProgress(0, 0);
+    collectFiles();
+}
+
+bool ModrinthPackExportTask::abort()
+{
+    if (task != nullptr) {
+        task->abort();
+        task = nullptr;
+        emitAborted();
+        return true;
+    }
+
+    if (buildZipFuture.isRunning()) {
+        buildZipFuture.cancel();
+        // NOTE: Here we don't do `emitAborted()` because it will be done when `buildZipFuture` actually cancels, which may not occur immediately.
+        return true;
+    }
+
+    return false;
+}
+
+void ModrinthPackExportTask::collectFiles()
+{
+    setAbortable(false);
+    QCoreApplication::processEvents();
+
+    files.clear();
+    if (!MMCZip::collectFileListRecursively(instance->gameRoot(), nullptr, &files, filter)) {
+        emitFailed(tr("Could not search for files"));
+        return;
+    }
+
+    pendingHashes.clear();
+    resolvedFiles.clear();
+
+    if (mcInstance) {
+        mcInstance->loaderModList()->update();
+        connect(mcInstance->loaderModList().get(), &ModFolderModel::updateFinished, this, &ModrinthPackExportTask::collectHashes);
+    } else
+        collectHashes();
+}
+
+void ModrinthPackExportTask::collectHashes()
+{
+    for (const QFileInfo& file : files) {
+        QCoreApplication::processEvents();
+
+        const QString relative = gameRoot.relativeFilePath(file.absoluteFilePath());
+        // require sensible file types
+        if (!std::any_of(PREFIXES.begin(), PREFIXES.end(),
+                         [&relative](const QString& prefix) { return relative.startsWith(prefix + QDir::separator()); }))
+            continue;
+        if (!std::any_of(FILE_EXTENSIONS.begin(), FILE_EXTENSIONS.end(), [&relative](const QString& extension) {
+                return relative.endsWith('.' + extension) || relative.endsWith('.' + extension + ".disabled");
+            })) {
+            continue;
+        }
+
+        QCryptographicHash sha512(QCryptographicHash::Algorithm::Sha512);
+
+        QFile openFile(file.absoluteFilePath());
+        if (!openFile.open(QFile::ReadOnly)) {
+            qWarning() << "Could not open" << file << "for hashing";
+            continue;
+        }
+
+        const QByteArray data = openFile.readAll();
+        if (openFile.error() != QFileDevice::NoError) {
+            qWarning() << "Could not read" << file;
+            continue;
+        }
+        sha512.addData(data);
+
+        auto allMods = mcInstance->loaderModList()->allMods();
+        if (auto modIter = std::find_if(allMods.begin(), allMods.end(), [&file](Mod* mod) { return mod->fileinfo() == file; });
+            modIter != allMods.end()) {
+            const Mod* mod = *modIter;
+            if (mod->metadata() != nullptr) {
+                QUrl& url = mod->metadata()->url;
+                // ensure the url is permitted on modrinth.com
+                if (!url.isEmpty() && BuildConfig.MODRINTH_MRPACK_HOSTS.contains(url.host())) {
+                    qDebug() << "Resolving" << relative << "from index";
+
+                    QCryptographicHash sha1(QCryptographicHash::Algorithm::Sha1);
+                    sha1.addData(data);
+
+                    ResolvedFile file{ sha1.result().toHex(), sha512.result().toHex(), url.toString(), openFile.size() };
+                    resolvedFiles[relative] = file;
+
+                    // nice! we've managed to resolve based on local metadata!
+                    // no need to enqueue it
+                    continue;
+                }
+            }
+        }
+
+        qDebug() << "Enqueueing" << relative << "for Modrinth query";
+        pendingHashes[relative] = sha512.result().toHex();
+    }
+
+    setAbortable(true);
+    makeApiRequest();
+}
+
+void ModrinthPackExportTask::makeApiRequest()
+{
+    if (pendingHashes.isEmpty())
+        buildZip();
+    else {
+        QByteArray* response = new QByteArray;
+        task = api.currentVersions(pendingHashes.values(), "sha512", response);
+        connect(task.get(), &NetJob::succeeded, [this, response]() { parseApiResponse(response); });
+        connect(task.get(), &NetJob::failed, this, &ModrinthPackExportTask::emitFailed);
+        task->start();
+    }
+}
+
+void ModrinthPackExportTask::parseApiResponse(const QByteArray* response)
+{
+    task = nullptr;
+
+    try {
+        const QJsonDocument doc = Json::requireDocument(*response);
+
+        QMapIterator<QString, QString> iterator(pendingHashes);
+        while (iterator.hasNext()) {
+            iterator.next();
+
+            const QJsonObject obj = doc[iterator.value()].toObject();
+            if (obj.isEmpty())
+                continue;
+
+            const QJsonArray files = obj["files"].toArray();
+            if (auto fileIter = std::find_if(files.begin(), files.end(),
+                                             [&iterator](const QJsonValue& file) { return file["hashes"]["sha512"] == iterator.value(); });
+                fileIter != files.end()) {
+                // map the file to the url
+                resolvedFiles[iterator.key()] =
+                    ResolvedFile{ fileIter->toObject()["hashes"].toObject()["sha1"].toString(), iterator.value(),
+                                  fileIter->toObject()["url"].toString(), fileIter->toObject()["size"].toInt() };
+            }
+        }
+    } catch (const Json::JsonException& e) {
+        emitFailed(tr("Failed to parse versions response: %1").arg(e.what()));
+        return;
+    }
+    pendingHashes.clear();
+    buildZip();
+}
+
+void ModrinthPackExportTask::buildZip()
+{
+    setStatus(tr("Adding files..."));
+
+    buildZipFuture = QtConcurrent::run(QThreadPool::globalInstance(), [this]() {
+        QuaZip zip(output);
+        if (!zip.open(QuaZip::mdCreate)) {
+            QFile::remove(output);
+            return BuildZipResult(tr("Could not create file"));
+        }
+
+        if (buildZipFuture.isCanceled())
+            return BuildZipResult();
+
+        QuaZipFile indexFile(&zip);
+        if (!indexFile.open(QIODevice::WriteOnly, QuaZipNewInfo("modrinth.index.json"))) {
+            QFile::remove(output);
+            return BuildZipResult(tr("Could not create index"));
+        }
+        indexFile.write(generateIndex());
+
+        size_t progress = 0;
+        for (const QFileInfo& file : files) {
+            if (buildZipFuture.isCanceled()) {
+                QFile::remove(output);
+                return BuildZipResult();
+            }
+
+            setProgress(progress, files.length());
+            const QString relative = gameRoot.relativeFilePath(file.absoluteFilePath());
+            if (!resolvedFiles.contains(relative) && !JlCompress::compressFile(&zip, file.absoluteFilePath(), "overrides/" + relative)) {
+                QFile::remove(output);
+                return BuildZipResult(tr("Could not read and compress %1").arg(relative));
+            }
+            progress++;
+        }
+
+        zip.close();
+
+        if (zip.getZipError() != 0) {
+            QFile::remove(output);
+            return BuildZipResult(tr("A zip error occurred"));
+        }
+
+        return BuildZipResult();
+    });
+    connect(&buildZipWatcher, &QFutureWatcher<BuildZipResult>::finished, this, &ModrinthPackExportTask::finish);
+    buildZipWatcher.setFuture(buildZipFuture);
+}
+
+void ModrinthPackExportTask::finish()
+{
+    if (buildZipFuture.isCanceled())
+        emitAborted();
+    else {
+        const BuildZipResult result = buildZipFuture.result();
+        if (result.has_value())
+            emitFailed(result.value());
+        else
+            emitSucceeded();
+    }
+}
+
+QByteArray ModrinthPackExportTask::generateIndex()
+{
+    QJsonObject obj;
+    obj["formatVersion"] = 1;
+    obj["game"] = "minecraft";
+    obj["name"] = name;
+    obj["versionId"] = version;
+    if (!summary.isEmpty())
+        obj["summary"] = summary;
+
+    if (mcInstance) {
+        auto profile = mcInstance->getPackProfile();
+        // collect all supported components
+        const ComponentPtr minecraft = profile->getComponent("net.minecraft");
+        const ComponentPtr quilt = profile->getComponent("org.quiltmc.quilt-loader");
+        const ComponentPtr fabric = profile->getComponent("net.fabricmc.fabric-loader");
+        const ComponentPtr forge = profile->getComponent("net.minecraftforge");
+
+        // convert all available components to mrpack dependencies
+        QJsonObject dependencies;
+        if (minecraft != nullptr)
+            dependencies["minecraft"] = minecraft->m_version;
+        if (quilt != nullptr)
+            dependencies["quilt-loader"] = quilt->m_version;
+        if (fabric != nullptr)
+            dependencies["fabric-loader"] = fabric->m_version;
+        if (forge != nullptr)
+            dependencies["forge"] = forge->m_version;
+
+        obj["dependencies"] = dependencies;
+    }
+
+    QJsonArray files;
+    QMapIterator<QString, ResolvedFile> iterator(resolvedFiles);
+    while (iterator.hasNext()) {
+        iterator.next();
+
+        const ResolvedFile& value = iterator.value();
+
+        QJsonObject file;
+        QString path = iterator.key();
+        path.replace(QDir::separator(), "/");
+        file["path"] = path;
+        file["downloads"] = QJsonArray({ iterator.value().url });
+
+        QJsonObject hashes;
+        hashes["sha1"] = value.sha1;
+        hashes["sha512"] = value.sha512;
+
+        file["hashes"] = hashes;
+        file["fileSize"] = value.size;
+
+        files << file;
+    }
+    obj["files"] = files;
+
+    return QJsonDocument(obj).toJson(QJsonDocument::Compact);
+}
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.h b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
new file mode 100644
index 00000000..af00ffaa
--- /dev/null
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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 <QFuture>
+#include <QFutureWatcher>
+#include "BaseInstance.h"
+#include "MMCZip.h"
+#include "minecraft/MinecraftInstance.h"
+#include "modplatform/modrinth/ModrinthAPI.h"
+#include "tasks/Task.h"
+
+class ModrinthPackExportTask : public Task {
+   public:
+    ModrinthPackExportTask(const QString& name,
+                           const QString& version,
+                           const QString& summary,
+                           InstancePtr instance,
+                           const QString& output,
+                           MMCZip::FilterFunction filter);
+
+   protected:
+    void executeTask() override;
+    bool abort() override;
+
+   private:
+    struct ResolvedFile {
+        QString sha1, sha512, url;
+        qint64 size;
+    };