1 files changed, 205 insertions, 0 deletions
diff --git a/meshmc/launcher/modplatform/modpacksch/FTBPackManifest.cpp b/meshmc/launcher/modplatform/modpacksch/FTBPackManifest.cpp
new file mode 100644
index 0000000000..afbf59736c
--- /dev/null
+++ b/meshmc/launcher/modplatform/modpacksch/FTBPackManifest.cpp
@@ -0,0 +1,205 @@
+/* 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/>.
+ *
+ *  This file incorporates work covered by the following copyright and
+ *  permission notice:
+ *
+ * Copyright 2020 Jamie Mansfield <jmansfield@cadixdev.org>
+ * Copyright 2020-2021 Petr Mrazek <peterix@gmail.com>
+ *
+ * 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 "FTBPackManifest.h"
+
+#include "Json.h"
+
+static void loadSpecs(ModpacksCH::Specs& s, QJsonObject& obj)
+{
+	s.id = Json::requireInteger(obj, "id");
+	s.minimum = Json::requireInteger(obj, "minimum");
+	s.recommended = Json::requireInteger(obj, "recommended");
+}
+
+static void loadTag(ModpacksCH::Tag& t, QJsonObject& obj)
+{
+	t.id = Json::requireInteger(obj, "id");
+	t.name = Json::requireString(obj, "name");
+}
+
+static void loadArt(ModpacksCH::Art& a, QJsonObject& obj)
+{
+	a.id = Json::requireInteger(obj, "id");
+	a.url = Json::requireString(obj, "url");
+	a.type = Json::requireString(obj, "type");
+	a.width = Json::requireInteger(obj, "width");
+	a.height = Json::requireInteger(obj, "height");
+	a.compressed = Json::requireBoolean(obj, "compressed");
+	a.sha1 = Json::requireString(obj, "sha1");
+	a.size = Json::requireInteger(obj, "size");
+	a.updated = Json::requireInteger(obj, "updated");
+}
+
+static void loadAuthor(ModpacksCH::Author& a, QJsonObject& obj)
+{
+	a.id = Json::requireInteger(obj, "id");
+	a.name = Json::requireString(obj, "name");
+	a.type = Json::requireString(obj, "type");
+	a.website = Json::requireString(obj, "website");
+	a.updated = Json::requireInteger(obj, "updated");
+}
+
+static void loadVersionInfo(ModpacksCH::VersionInfo& v, QJsonObject& obj)
+{
+	v.id = Json::requireInteger(obj, "id");
+	v.name = Json::requireString(obj, "name");
+	v.type = Json::requireString(obj, "type");
+	v.updated = Json::requireInteger(obj, "updated");
+	auto specs = Json::requireObject(obj, "specs");
+	loadSpecs(v.specs, specs);
+}
+
+void ModpacksCH::loadModpack(ModpacksCH::Modpack& m, QJsonObject& obj)
+{
+	m.id = Json::requireInteger(obj, "id");
+	m.name = Json::requireString(obj, "name");
+	m.synopsis = Json::requireString(obj, "synopsis");
+	m.description = Json::requireString(obj, "description");
+	m.type = Json::requireString(obj, "type");
+	m.featured = Json::requireBoolean(obj, "featured");
+	m.installs = Json::requireInteger(obj, "installs");
+	m.plays = Json::requireInteger(obj, "plays");
+	m.updated = Json::requireInteger(obj, "updated");
+	m.refreshed = Json::requireInteger(obj, "refreshed");
+	auto artArr = Json::requireArray(obj, "art");
+	for (QJsonValueRef artRaw : artArr) {
+		auto artObj = Json::requireObject(artRaw);
+		ModpacksCH::Art art;
+		loadArt(art, artObj);
+		m.art.append(art);
+	}
+	auto authorArr = Json::requireArray(obj, "authors");
+	for (QJsonValueRef authorRaw : authorArr) {
+		auto authorObj = Json::requireObject(authorRaw);
+		ModpacksCH::Author author;
+		loadAuthor(author, authorObj);
+		m.authors.append(author);
+	}
+	auto versionArr = Json::requireArray(obj, "versions");
+	for (QJsonValueRef versionRaw : versionArr) {
+		auto versionObj = Json::requireObject(versionRaw);
+		ModpacksCH::VersionInfo version;
+		loadVersionInfo(version, versionObj);
+		m.versions.append(version);
+	}
+	auto tagArr = Json::requireArray(obj, "tags");
+	for (QJsonValueRef tagRaw : tagArr) {
+		auto tagObj = Json::requireObject(tagRaw);
+		ModpacksCH::Tag tag;
+		loadTag(tag, tagObj);
+		m.tags.append(tag);
+	}
+	m.updated = Json::requireInteger(obj, "updated");
+}
+
+static void loadVersionTarget(ModpacksCH::VersionTarget& a, QJsonObject& obj)
+{
+	a.id = Json::requireInteger(obj, "id");
+	a.name = Json::requireString(obj, "name");
+	a.type = Json::requireString(obj, "type");
+	a.version = Json::requireString(obj, "version");
+	a.updated = Json::requireInteger(obj, "updated");
+}
+
+static void loadVersionFile(ModpacksCH::VersionFile& a, QJsonObject& obj)
+{
+	a.id = Json::requireInteger(obj, "id");
+	a.type = Json::requireString(obj, "type");
+	a.path = Json::requireString(obj, "path");
+	a.name = Json::requireString(obj, "name");
+	a.version = Json::requireString(obj, "version");
+	a.url = Json::ensureString(obj, "url", QString());
+	a.sha1 = Json::ensureString(obj, "sha1", QString());
+	a.size = Json::requireInteger(obj, "size");
+	a.clientOnly = Json::requireBoolean(obj, "clientonly");
+	a.serverOnly = Json::requireBoolean(obj, "serveronly");
+	a.optional = Json::requireBoolean(obj, "optional");
+	a.updated = Json::requireInteger(obj, "updated");
+	// Some files reference CurseForge mods with no direct download URL.
+	// Construct edge CDN URL from CurseForge file ID if available.
+	if (a.url.isEmpty() && obj.contains("curseforge")) {
+		auto cf = Json::requireObject(obj, "curseforge");
+		int cfFileId = Json::requireInteger(cf, "file");
+		// CurseForge edge CDN URL format: files/{first 4 digits}/{remaining
+		// digits}/{filename}
+		QString fileIdStr = QString::number(cfFileId);
+		QString prefix = fileIdStr.mid(0, 4);
+		QString suffix = fileIdStr.mid(4);
+		a.url = QString("https://edge.forgecdn.net/files/%1/%2/%3")
+					.arg(prefix, suffix, a.name);
+		qDebug() << "Constructed CurseForge CDN URL for" << a.name << ":"
+				 << a.url;
+	}
+}
+
+void ModpacksCH::loadVersion(ModpacksCH::Version& m, QJsonObject& obj)
+{
+	m.id = Json::requireInteger(obj, "id");
+	m.parent = Json::requireInteger(obj, "parent");
+	m.name = Json::requireString(obj, "name");
+	m.type = Json::requireString(obj, "type");
+	m.installs = Json::requireInteger(obj, "installs");
+	m.plays = Json::requireInteger(obj, "plays");
+	m.updated = Json::requireInteger(obj, "updated");
+	m.refreshed = Json::requireInteger(obj, "refreshed");
+	auto specs = Json::requireObject(obj, "specs");
+	loadSpecs(m.specs, specs);
+	auto targetArr = Json::requireArray(obj, "targets");
+	for (QJsonValueRef targetRaw : targetArr) {
+		auto versionObj = Json::requireObject(targetRaw);
+		ModpacksCH::VersionTarget target;
+		loadVersionTarget(target, versionObj);
+		m.targets.append(target);
+	}
+	auto fileArr = Json::requireArray(obj, "files");
+	for (QJsonValueRef fileRaw : fileArr) {
+		auto fileObj = Json::requireObject(fileRaw);
+		ModpacksCH::VersionFile file;
+		loadVersionFile(file, fileObj);
+		m.files.append(file);
+	}
+}
+
+// static void loadVersionChangelog(ModpacksCH::VersionChangelog & m,
+// QJsonObject & obj)
+//{
+//     m.content = Json::requireString(obj, "content");
+//     m.updated = Json::requireInteger(obj, "updated");
+// }