1 files changed, 85 insertions, 0 deletions
diff --git a/meshmc/launcher/modplatform/modrinth/ModrinthPackManifest.cpp b/meshmc/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
new file mode 100644
index 0000000000..f2962925b2
--- /dev/null
+++ b/meshmc/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
@@ -0,0 +1,85 @@
+/* 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/>.
+ */
+
+#include "ModrinthPackManifest.h"
+
+#include "Json.h"
+
+static void loadFile(Modrinth::File& f, QJsonObject& fileObj)
+{
+	f.path = Json::requireString(fileObj, "path");
+
+	auto downloads = Json::requireArray(fileObj, "downloads");
+	if (!downloads.isEmpty()) {
+		f.downloadUrl = QUrl(downloads.first().toString());
+	}
+
+	auto hashes = Json::ensureObject(fileObj, "hashes");
+	f.sha1 = Json::ensureString(hashes, "sha1", "");
+	f.sha512 = Json::ensureString(hashes, "sha512", "");
+
+	f.fileSize = Json::ensureInteger(fileObj, "fileSize", 0);
+}
+
+static void loadDependencies(Modrinth::Manifest& m, QJsonObject& deps)
+{
+	m.minecraftVersion = Json::ensureString(deps, "minecraft", "");
+	m.forgeVersion = Json::ensureString(deps, "forge", "");
+	m.fabricVersion = Json::ensureString(deps, "fabric-loader", "");
+	m.quiltVersion = Json::ensureString(deps, "quilt-loader", "");
+	m.neoForgeVersion = Json::ensureString(deps, "neoforge", "");
+}
+
+void Modrinth::loadManifest(Modrinth::Manifest& m, const QString& filepath)
+{
+	auto doc = Json::requireDocument(filepath);
+	auto obj = Json::requireObject(doc);
+
+	m.formatVersion = Json::requireInteger(obj, "formatVersion");
+	if (m.formatVersion != 1) {
+		throw JSONValidationError(
+			QString("Unsupported Modrinth modpack format version: %1")
+				.arg(m.formatVersion));
+	}
+
+	m.game = Json::requireString(obj, "game");
+	if (m.game != "minecraft") {
+		throw JSONValidationError(
+			QString("Unsupported game in Modrinth modpack: %1").arg(m.game));
+	}
+
+	m.versionId = Json::ensureString(obj, "versionId", "");
+	m.name = Json::ensureString(obj, "name", "Unnamed");
+	m.summary = Json::ensureString(obj, "summary", "");
+
+	auto files = Json::requireArray(obj, "files");
+	for (auto fileRaw : files) {
+		auto fileObj = Json::requireObject(fileRaw);
+		Modrinth::File file;
+		loadFile(file, fileObj);
+		m.files.append(file);
+	}
+
+	auto deps = Json::ensureObject(obj, "dependencies");
+	if (!deps.isEmpty()) {
+		loadDependencies(m, deps);
+	}
+}