Merge branch 'staging' of https://github.com/PrismLauncher/PrismLauncher into icons

20 files changed, 418 insertions, 194 deletions

diff --git a/launcher/modplatform/atlauncher/ATLPackInstallTask.cpp b/launcher/modplatform/atlauncher/ATLPackInstallTask.cpp
index 82a51c27..8260a25c 100644
--- a/launcher/modplatform/atlauncher/ATLPackInstallTask.cpp
+++ b/launcher/modplatform/atlauncher/ATLPackInstallTask.cpp
@@ -53,6 +53,8 @@
 #include "meta/Version.h"
 #include "meta/VersionList.h"
 
+#include "net/ApiDownload.h"
+
 #include "BuildConfig.h"
 #include "Application.h"
 
@@ -82,9 +84,9 @@ void PackInstallTask::executeTask()
 {
     qDebug() << "PackInstallTask::executeTask: " << QThread::currentThreadId();
     NetJob::Ptr netJob{ new NetJob("ATLauncher::VersionFetch", APPLICATION->network()) };
-    auto searchUrl =
+    auto searchUrl = 
         QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "packs/%1/versions/%2/Configs.json").arg(m_pack_safe_name).arg(m_version_name);
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl), response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, this, &PackInstallTask::onDownloadSucceeded);
     QObject::connect(netJob.get(), &NetJob::failed, this, &PackInstallTask::onDownloadFailed);
@@ -659,7 +661,7 @@ void PackInstallTask::installConfigs()
     auto entry = APPLICATION->metacache()->resolveEntry("ATLauncherPacks", path);
     entry->setStale(true);
 
-    auto dl = Net::Download::makeCached(url, entry);
+    auto dl = Net::ApiDownload::makeCached(url, entry);
     if (!m_version.configs.sha1.isEmpty()) {
         auto rawSha1 = QByteArray::fromHex(m_version.configs.sha1.toLatin1());
         dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawSha1));
@@ -782,7 +784,7 @@ void PackInstallTask::downloadMods()
             entry->setStale(true);
             modsToExtract.insert(entry->getFullPath(), mod);
 
-            auto dl = Net::Download::makeCached(url, entry);
+            auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
                 auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
                 dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
@@ -794,7 +796,7 @@ void PackInstallTask::downloadMods()
             entry->setStale(true);
             modsToDecomp.insert(entry->getFullPath(), mod);
 
-            auto dl = Net::Download::makeCached(url, entry);
+            auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
                 auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
                 dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
@@ -808,7 +810,7 @@ void PackInstallTask::downloadMods()
             auto entry = APPLICATION->metacache()->resolveEntry("ATLauncherPacks", cacheName);
             entry->setStale(true);
 
-            auto dl = Net::Download::makeCached(url, entry);
+            auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
                 auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
                 dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
diff --git a/launcher/modplatform/flame/FileResolvingTask.cpp b/launcher/modplatform/flame/FileResolvingTask.cpp
index ae168bbd..fcf8517f 100644
--- a/launcher/modplatform/flame/FileResolvingTask.cpp
+++ b/launcher/modplatform/flame/FileResolvingTask.cpp
@@ -1,7 +1,9 @@
 #include "FileResolvingTask.h"
 
 #include "Json.h"
+#include "net/ApiUpload.h"
 #include "net/Upload.h"
+#include "net/ApiDownload.h"
 
 #include "modplatform/modrinth/ModrinthPackIndex.h"
 
@@ -38,7 +40,7 @@ void Flame::FileResolvingTask::executeTask()
             return l;
         }));
     QByteArray data = Json::toText(object);
-    auto dl = Net::Upload::makeByteArray(QUrl("https://api.curseforge.com/v1/mods/files"), result, data);
+    auto dl = Net::ApiUpload::makeByteArray(QUrl("https://api.curseforge.com/v1/mods/files"), result, data);
     m_dljob->addNetAction(dl);
 
     auto step_progress = std::make_shared<TaskStepProgress>();
@@ -99,7 +101,7 @@ void Flame::FileResolvingTask::netJobFinished()
             if (!hash.isEmpty()) {
                 auto url = QString("https://api.modrinth.com/v2/version_file/%1?algorithm=sha1").arg(hash);
                 auto output = std::make_shared<QByteArray>();
-                auto dl = Net::Download::makeByteArray(QUrl(url), output);
+                auto dl = Net::ApiDownload::makeByteArray(QUrl(url), output);
                 QObject::connect(dl.get(), &Net::Download::succeeded, [&out]() { out.resolved = true; });
 
                 m_checkJob->addNetAction(dl);
@@ -171,7 +173,7 @@ void Flame::FileResolvingTask::modrinthCheckFinished()
             auto projectId = mod->projectId;
             auto output = std::make_shared<QByteArray>();
             auto url = QString("https://api.curseforge.com/v1/mods/%1").arg(projectId);
-            auto dl = Net::Download::makeByteArray(url, output);
+            auto dl = Net::ApiDownload::makeByteArray(url, output);
             qDebug() << "Fetching url slug for file:" << mod->fileName;
             QObject::connect(dl.get(), &Net::Download::succeeded, [block, index, output]() {
                 auto mod = block->at(index);  // use the shared_ptr so it is captured and only freed when we are done
diff --git a/launcher/modplatform/flame/FlameAPI.cpp b/launcher/modplatform/flame/FlameAPI.cpp
index 5b0b1d8b..7231b466 100644
--- a/launcher/modplatform/flame/FlameAPI.cpp
+++ b/launcher/modplatform/flame/FlameAPI.cpp
@@ -8,7 +8,9 @@
 #include "Application.h"
 #include "BuildConfig.h"
 #include "Json.h"
+#include "net/ApiUpload.h"
 #include "net/NetJob.h"
+#include "net/ApiDownload.h"
 #include "net/Upload.h"
 
 Task::Ptr FlameAPI::matchFingerprints(const QList<uint>& fingerprints, std::shared_ptr<QByteArray> response)
@@ -26,7 +28,7 @@ Task::Ptr FlameAPI::matchFingerprints(const QList<uint>& fingerprints, std::shar
     QJsonDocument body(body_obj);
     auto body_raw = body.toJson();
 
-    netJob->addNetAction(Net::Upload::makeByteArray(QString("https://api.curseforge.com/v1/fingerprints"), response, body_raw));
+    netJob->addNetAction(Net::ApiUpload::makeByteArray(QString("https://api.curseforge.com/v1/fingerprints"), response, body_raw));
 
     return netJob;
 }
@@ -38,7 +40,7 @@ auto FlameAPI::getModFileChangelog(int modId, int fileId) -> QString
 
     auto netJob = makeShared<NetJob>(QString("Flame::FileChangelog"), APPLICATION->network());
     auto response = std::make_shared<QByteArray>();
-    netJob->addNetAction(Net::Download::makeByteArray(
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(
         QString("https://api.curseforge.com/v1/mods/%1/files/%2/changelog")
             .arg(QString::fromStdString(std::to_string(modId)), QString::fromStdString(std::to_string(fileId))),
         response));
@@ -74,7 +76,7 @@ auto FlameAPI::getModDescription(int modId) -> QString
     auto netJob = makeShared<NetJob>(QString("Flame::ModDescription"), APPLICATION->network());
     auto response = std::make_shared<QByteArray>();
     netJob->addNetAction(
-        Net::Download::makeByteArray(QString("https://api.curseforge.com/v1/mods/%1/description").arg(QString::number(modId)), response));
+        Net::ApiDownload::makeByteArray(QString("https://api.curseforge.com/v1/mods/%1/description").arg(QString::number(modId)), response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, [&netJob, response, &description] {
         QJsonParseError parse_error{};
@@ -113,7 +115,7 @@ auto FlameAPI::getLatestVersion(VersionSearchArgs&& args) -> ModPlatform::Indexe
     auto response = std::make_shared<QByteArray>();
     ModPlatform::IndexedVersion ver;
 
-    netJob->addNetAction(Net::Download::makeByteArray(versions_url, response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(versions_url, response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, [response, args, &ver] {
         QJsonParseError parse_error{};
@@ -173,7 +175,7 @@ Task::Ptr FlameAPI::getProjects(QStringList addonIds, std::shared_ptr<QByteArray
     QJsonDocument body(body_obj);
     auto body_raw = body.toJson();
 
-    netJob->addNetAction(Net::Upload::makeByteArray(QString("https://api.curseforge.com/v1/mods"), response, body_raw));
+    netJob->addNetAction(Net::ApiUpload::makeByteArray(QString("https://api.curseforge.com/v1/mods"), response, body_raw));
 
     QObject::connect(netJob.get(), &NetJob::failed, [body_raw] { qDebug() << body_raw; });
 
@@ -195,7 +197,7 @@ Task::Ptr FlameAPI::getFiles(const QStringList& fileIds, std::shared_ptr<QByteAr
     QJsonDocument body(body_obj);
     auto body_raw = body.toJson();
 
-    netJob->addNetAction(Net::Upload::makeByteArray(QString("https://api.curseforge.com/v1/mods/files"), response, body_raw));
+    netJob->addNetAction(Net::ApiUpload::makeByteArray(QString("https://api.curseforge.com/v1/mods/files"), response, body_raw));
 
     QObject::connect(netJob.get(), &NetJob::failed, [body_raw] { qDebug() << body_raw; });
 
diff --git a/launcher/modplatform/flame/FlameCheckUpdate.cpp b/launcher/modplatform/flame/FlameCheckUpdate.cpp
index a2628e34..e10fedc3 100644
--- a/launcher/modplatform/flame/FlameCheckUpdate.cpp
+++ b/launcher/modplatform/flame/FlameCheckUpdate.cpp
@@ -13,6 +13,8 @@
 #include "minecraft/mod/ModFolderModel.h"
 #include "minecraft/mod/ResourceFolderModel.h"
 
+#include "net/ApiDownload.h"
+
 static FlameAPI api;
 
 bool FlameCheckUpdate::abort()
@@ -33,7 +35,7 @@ ModPlatform::IndexedPack getProjectInfo(ModPlatform::IndexedVersion& ver_info)
 
     auto response = std::make_shared<QByteArray>();
     auto url = QString("https://api.curseforge.com/v1/mods/%1").arg(ver_info.addonId.toString());
-    auto dl = Net::Download::makeByteArray(url, response);
+    auto dl = Net::ApiDownload::makeByteArray(url, response);
     get_project_job->addNetAction(dl);
 
     QObject::connect(get_project_job, &NetJob::succeeded, [response, &pack]() {
@@ -77,7 +79,7 @@ ModPlatform::IndexedVersion getFileInfo(int addonId, int fileId)
 
     auto response = std::make_shared<QByteArray>();
     auto url = QString("https://api.curseforge.com/v1/mods/%1/files/%2").arg(QString::number(addonId), QString::number(fileId));
-    auto dl = Net::Download::makeByteArray(url, response);
+    auto dl = Net::ApiDownload::makeByteArray(url, response);
     get_file_info_job->addNetAction(dl);
 
     QObject::connect(get_file_info_job, &NetJob::succeeded, [response, &ver]() {
diff --git a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
index e17cf1c2..c170a4f5 100644
--- a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
+++ b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
@@ -61,6 +61,7 @@
 #include "meta/VersionList.h"
 #include "minecraft/World.h"
 #include "minecraft/mod/tasks/LocalResourceParse.h"
+#include "net/ApiDownload.h"
 
 static const FlameAPI api;
 
@@ -523,7 +524,7 @@ void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
             case Flame::File::Type::Mod: {
                 if (!result.url.isEmpty()) {
                     qDebug() << "Will download" << result.url << "to" << path;
-                    auto dl = Net::Download::makeFile(result.url, path);
+                    auto dl = Net::ApiDownload::makeFile(result.url, path);
                     m_files_job->addNetAction(dl);
                 }
                 break;
diff --git a/launcher/modplatform/flame/FlamePackExportTask.cpp b/launcher/modplatform/flame/FlamePackExportTask.cpp
index 87bf780c..f5f3af37 100644
--- a/launcher/modplatform/flame/FlamePackExportTask.cpp
+++ b/launcher/modplatform/flame/FlamePackExportTask.cpp
@@ -26,6 +26,7 @@
 #include <QMessageBox>
 #include <QtConcurrentRun>
 #include <algorithm>
+#include <iterator>
 #include <memory>
 #include "Json.h"
 #include "MMCZip.h"
@@ -64,20 +65,11 @@ void FlamePackExportTask::executeTask()
 
 bool FlamePackExportTask::abort()
 {
-    if (task != nullptr) {
+    if (task) {
         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;
 }
 
@@ -336,89 +328,40 @@ void FlamePackExportTask::buildZip()
     setStatus(tr("Adding files..."));
     setProgress(4, 5);
 
-    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();
+    auto zipTask = makeShared<MMCZip::ExportToZipTask>(output, gameRoot, files, "overrides/", true);
+    zipTask->addExtraFile("manifest.json", generateIndex());
+    zipTask->addExtraFile("modlist.html", generateHTML());
 
-        QuaZipFile indexFile(&zip);
-        if (!indexFile.open(QIODevice::WriteOnly, QuaZipNewInfo("manifest.json"))) {
-            QFile::remove(output);
-            return BuildZipResult(tr("Could not create index"));
-        }
-        indexFile.write(generateIndex());
+    QStringList exclude;
+    std::transform(resolvedFiles.keyBegin(), resolvedFiles.keyEnd(), std::back_insert_iterator(exclude),
+                   [this](QString file) { return gameRoot.relativeFilePath(file); });
+    zipTask->setExcludeFiles(exclude);
 
-        QuaZipFile modlist(&zip);
-        if (!modlist.open(QIODevice::WriteOnly, QuaZipNewInfo("modlist.html"))) {
-            QFile::remove(output);
-            return BuildZipResult(tr("Could not create index"));
-        }
-        QString content = "";
-        for (auto mod : resolvedFiles) {
-            if (mod.isMod) {
-                content += QString(TEMPLATE)
-                               .replace("{name}", mod.name.toHtmlEscaped())
-                               .replace("{url}", ModPlatform::getMetaURL(ModPlatform::ResourceProvider::FLAME, mod.addonId).toHtmlEscaped())
-                               .replace("{authors}", !mod.authors.isEmpty() ? QString(" (by %1)").arg(mod.authors).toHtmlEscaped() : "");
-            }
-        }
-        content = "<ul>" + content + "</ul>";
-        modlist.write(content.toUtf8());
-
-        auto progressStep = std::make_shared<TaskStepProgress>();
-
-        size_t progress = 0;
-        for (const QFileInfo& file : files) {
-            if (buildZipFuture.isCanceled()) {
-                QFile::remove(output);
-                progressStep->state = TaskStepState::Failed;
-                stepProgress(*progressStep);
-                return BuildZipResult();
-            }
-            progressStep->update(progress, files.length());
-            stepProgress(*progressStep);
-
-            const QString relative = gameRoot.relativeFilePath(file.absoluteFilePath());
-            if (!resolvedFiles.contains(file.absoluteFilePath()) &&
-                !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);
-            progressStep->state = TaskStepState::Failed;
-            stepProgress(*progressStep);
-            return BuildZipResult(tr("A zip error occurred"));
-        }
+    auto progressStep = std::make_shared<TaskStepProgress>();
+    connect(zipTask.get(), &Task::finished, this, [this, progressStep] {
         progressStep->state = TaskStepState::Succeeded;
         stepProgress(*progressStep);
-        return BuildZipResult();
     });
-    connect(&buildZipWatcher, &QFutureWatcher<BuildZipResult>::finished, this, &FlamePackExportTask::finish);
-    buildZipWatcher.setFuture(buildZipFuture);
-}
 
-void FlamePackExportTask::finish()
-{
-    if (buildZipFuture.isCanceled())
-        emitAborted();
-    else {
-        const BuildZipResult result = buildZipFuture.result();
-        if (result.has_value())
-            emitFailed(result.value());
-        else
-            emitSucceeded();
-    }
+    connect(zipTask.get(), &Task::succeeded, this, &FlamePackExportTask::emitSucceeded);
+    connect(zipTask.get(), &Task::aborted, this, &FlamePackExportTask::emitAborted);
+    connect(zipTask.get(), &Task::failed, this, [this, progressStep](QString reason) {
+        progressStep->state = TaskStepState::Failed;
+        stepProgress(*progressStep);
+        emitFailed(reason);
+    });
+    connect(zipTask.get(), &Task::stepProgress, this, &FlamePackExportTask::propagateStepProgress);
+
+    connect(zipTask.get(), &Task::progress, this, [this, progressStep](qint64 current, qint64 total) {
+        progressStep->update(current, total);
+        stepProgress(*progressStep);
+    });
+    connect(zipTask.get(), &Task::status, this, [this, progressStep](QString status) {
+        progressStep->status = status;
+        stepProgress(*progressStep);
+    });
+    task.reset(zipTask);
+    zipTask->start();
 }
 
 QByteArray FlamePackExportTask::generateIndex()
@@ -471,3 +414,18 @@ QByteArray FlamePackExportTask::generateIndex()
 
     return QJsonDocument(obj).toJson(QJsonDocument::Compact);
 }
+
+QByteArray FlamePackExportTask::generateHTML()
+{
+    QString content = "";
+    for (auto mod : resolvedFiles) {
+        if (mod.isMod) {
+            content += QString(TEMPLATE)
+                           .replace("{name}", mod.name.toHtmlEscaped())
+                           .replace("{url}", ModPlatform::getMetaURL(ModPlatform::ResourceProvider::FLAME, mod.addonId).toHtmlEscaped())
+                           .replace("{authors}", !mod.authors.isEmpty() ? QString(" (by %1)").arg(mod.authors).toHtmlEscaped() : "");
+        }
+    }
+    content = "<ul>" + content + "</ul>";
+    return content.toUtf8();
+}
\ No newline at end of file
diff --git a/launcher/modplatform/flame/FlamePackExportTask.h b/launcher/modplatform/flame/FlamePackExportTask.h
index 3dee0a7e..d3dc6281 100644
--- a/launcher/modplatform/flame/FlamePackExportTask.h
+++ b/launcher/modplatform/flame/FlamePackExportTask.h
@@ -19,8 +19,6 @@
 
 #pragma once
 
-#include <QFuture>
-#include <QFutureWatcher>
 #include "BaseInstance.h"
 #include "MMCZip.h"
 #include "minecraft/MinecraftInstance.h"
@@ -52,7 +50,6 @@ class FlamePackExportTask : public Task {
     const QString output;
     const MMCZip::FilterFunction filter;
 
-    typedef std::optional<QString> BuildZipResult;
     struct ResolvedFile {
         int addonId;
         int version;
@@ -76,15 +73,13 @@ class FlamePackExportTask : public Task {
     QMap<QString, HashInfo> pendingHashes{};
     QMap<QString, ResolvedFile> resolvedFiles{};
     Task::Ptr task;
-    QFuture<BuildZipResult> buildZipFuture;
-    QFutureWatcher<BuildZipResult> buildZipWatcher;
 
     void collectFiles();
     void collectHashes();
     void makeApiRequest();
     void getProjectsInfo();
     void buildZip();
-    void finish();
 
     QByteArray generateIndex();
+    QByteArray generateHTML();
 };
diff --git a/launcher/modplatform/helpers/NetworkResourceAPI.cpp b/launcher/modplatform/helpers/NetworkResourceAPI.cpp
index c278f800..9bc6dd5c 100644
--- a/launcher/modplatform/helpers/NetworkResourceAPI.cpp
+++ b/launcher/modplatform/helpers/NetworkResourceAPI.cpp
@@ -10,6 +10,8 @@
 
 #include "modplatform/ModIndex.h"
 
+#include "net/ApiDownload.h"
+
 Task::Ptr NetworkResourceAPI::searchProjects(SearchArgs&& args, SearchCallbacks&& callbacks) const
 {
     auto search_url_optional = getSearchURL(args);
@@ -23,7 +25,7 @@ Task::Ptr NetworkResourceAPI::searchProjects(SearchArgs&& args, SearchCallbacks&
     auto response = std::make_shared<QByteArray>();
     auto netJob = makeShared<NetJob>(QString("%1::Search").arg(debugName()), APPLICATION->network());
 
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(search_url), response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(search_url), response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, [this, response, callbacks] {
         QJsonParseError parse_error{};
@@ -85,7 +87,7 @@ Task::Ptr NetworkResourceAPI::getProjectVersions(VersionSearchArgs&& args, Versi
     auto netJob = makeShared<NetJob>(QString("%1::Versions").arg(args.pack.name), APPLICATION->network());
     auto response = std::make_shared<QByteArray>();
 
-    netJob->addNetAction(Net::Download::makeByteArray(versions_url, response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(versions_url, response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, [response, callbacks, args] {
         QJsonParseError parse_error{};
@@ -113,7 +115,7 @@ Task::Ptr NetworkResourceAPI::getProject(QString addonId, std::shared_ptr<QByteA
 
     auto netJob = makeShared<NetJob>(QString("%1::GetProject").arg(addonId), APPLICATION->network());
 
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(project_url), response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(project_url), response));
 
     return netJob;
 }
diff --git a/launcher/modplatform/import_ftb/PackHelpers.cpp b/launcher/modplatform/import_ftb/PackHelpers.cpp
new file mode 100644
index 00000000..4a1bbef9
--- /dev/null
+++ b/launcher/modplatform/import_ftb/PackHelpers.cpp
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  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 "modplatform/import_ftb/PackHelpers.h"
+
+#include <QIcon>
+#include <QString>
+#include <QVariant>
+
+#include "FileSystem.h"
+#include "Json.h"
+
+namespace FTBImportAPP {
+
+Modpack parseDirectory(QString path)
+{
+    Modpack modpack{ path };
+    auto instanceFile = QFileInfo(FS::PathCombine(path, "instance.json"));
+    if (!instanceFile.exists() || !instanceFile.isFile())
+        return {};
+    try {
+        auto doc = Json::requireDocument(instanceFile.absoluteFilePath(), "FTB_APP instance JSON file");
+        const auto root = doc.object();
+        modpack.uuid = Json::requireString(root, "uuid", "uuid");
+        modpack.id = Json::requireInteger(root, "id", "id");
+        modpack.versionId = Json::requireInteger(root, "versionId", "versionId");
+        modpack.name = Json::requireString(root, "name", "name");
+        modpack.version = Json::requireString(root, "version", "version");
+        modpack.mcVersion = Json::requireString(root, "mcVersion", "mcVersion");
+        modpack.jvmArgs = Json::ensureVariant(root, "jvmArgs", {}, "jvmArgs");
+    } catch (const Exception& e) {
+        qDebug() << "Couldn't load ftb instance json: " << e.cause();
+        return {};
+    }
+    auto versionsFile = QFileInfo(FS::PathCombine(path, "version.json"));
+    if (!versionsFile.exists() || !versionsFile.isFile())
+        return {};
+    try {
+        auto doc = Json::requireDocument(versionsFile.absoluteFilePath(), "FTB_APP version JSON file");
+        const auto root = doc.object();
+        auto targets = Json::requireArray(root, "targets", "targets");
+
+        for (auto target : targets) {
+            auto obj = Json::requireObject(target, "target");
+            auto name = Json::requireString(obj, "name", "name");
+            auto version = Json::requireString(obj, "version", "version");
+            if (name == "forge") {
+                modpack.loaderType = ResourceAPI::Forge;
+                modpack.version = version;
+                break;
+            } else if (name == "fabric") {
+                modpack.loaderType = ResourceAPI::Fabric;
+                modpack.version = version;
+                break;
+            } else if (name == "quilt") {
+                modpack.loaderType = ResourceAPI::Quilt;
+                modpack.version = version;
+                break;
+            }
+        }
+    } catch (const Exception& e) {
+        qDebug() << "Couldn't load ftb version json: " << e.cause();
+        return {};
+    }
+    auto iconFile = QFileInfo(FS::PathCombine(path, "folder.jpg"));
+    if (iconFile.exists() && iconFile.isFile()) {
+        modpack.icon = QIcon(iconFile.absoluteFilePath());
+    }
+    return modpack;
+}
+
+}  // namespace FTBImportAPP
diff --git a/launcher/modplatform/import_ftb/PackHelpers.h b/launcher/modplatform/import_ftb/PackHelpers.h
new file mode 100644
index 00000000..8ea4f3fa
--- /dev/null
+++ b/launcher/modplatform/import_ftb/PackHelpers.h
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  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 <QIcon>
+#include <QList>
+#include <QMetaType>
+#include <QString>
+#include <QVariant>
+#include "modplatform/ResourceAPI.h"
+
+namespace FTBImportAPP {
+
+struct Modpack {
+    QString path;
+
+    // json data
+    QString uuid;
+    int id;
+    int versionId;
+    QString name;
+    QString version;
+    QString mcVersion;
+    // not needed for instance creation
+    QVariant jvmArgs;
+
+    std::optional<ResourceAPI::ModLoaderType> loaderType;
+    QString loaderVersion;
+
+    QIcon icon;
+};
+
+typedef QList<Modpack> ModpackList;
+
+Modpack parseDirectory(QString path);
+
+}  // namespace FTBImportAPP
+
+// We need it for the proxy model
+Q_DECLARE_METATYPE(FTBImportAPP::Modpack)
diff --git a/launcher/modplatform/import_ftb/PackInstallTask.cpp b/launcher/modplatform/import_ftb/PackInstallTask.cpp
new file mode 100644
index 00000000..b5e424d1
--- /dev/null
+++ b/launcher/modplatform/import_ftb/PackInstallTask.cpp
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  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 "PackInstallTask.h"
+
+#include <QtConcurrent>
+
+#include "BaseInstance.h"
+#include "FileSystem.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/PackProfile.h"
+#include "modplatform/ResourceAPI.h"
+#include "modplatform/import_ftb/PackHelpers.h"
+#include "settings/INISettingsObject.h"
+
+namespace FTBImportAPP {
+
+void PackInstallTask::executeTask()
+{
+    setStatus(tr("Copying files..."));
+    setAbortable(false);
+    progress(1, 2);
+
+    m_copyFuture = QtConcurrent::run(QThreadPool::globalInstance(), [this] {
+        FS::copy folderCopy(m_pack.path, FS::PathCombine(m_stagingPath, ".minecraft"));
+        folderCopy.followSymlinks(true);
+        return folderCopy();
+    });
+    connect(&m_copyFutureWatcher, &QFutureWatcher<bool>::finished, this, &PackInstallTask::copySettings);
+    connect(&m_copyFutureWatcher, &QFutureWatcher<bool>::canceled, this, &PackInstallTask::emitAborted);
+    m_copyFutureWatcher.setFuture(m_copyFuture);
+}
+
+void PackInstallTask::copySettings()
+{
+    setStatus(tr("Copying settings..."));
+    progress(2, 2);
+    QString instanceConfigPath = FS::PathCombine(m_stagingPath, "instance.cfg");
+    auto instanceSettings = std::make_shared<INISettingsObject>(instanceConfigPath);
+    instanceSettings->suspendSave();
+    MinecraftInstance instance(m_globalSettings, instanceSettings, m_stagingPath);
+    instance.settings()->set("InstanceType", "OneSix");
+
+    if (m_pack.jvmArgs.isValid() && !m_pack.jvmArgs.toString().isEmpty()) {
+        instance.settings()->set("OverrideJavaArgs", true);
+        instance.settings()->set("JvmArgs", m_pack.jvmArgs.toString());
+    }
+
+    auto components = instance.getPackProfile();
+    components->buildingFromScratch();
+    components->setComponentVersion("net.minecraft", m_pack.mcVersion, true);
+
+    auto modloader = m_pack.loaderType;
+    if (modloader.has_value())
+        switch (modloader.value()) {
+            case ResourceAPI::Forge: {
+                components->setComponentVersion("net.minecraftforge", m_pack.version, true);
+                break;
+            }
+            case ResourceAPI::Fabric: {
+