/* 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 2020-2021 Jamie Mansfield <jmansfield@cadixdev.org>
 * Copyright 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 "ATLPackManifest.h"

#include "Json.h"

static ATLauncher::DownloadType parseDownloadType(QString rawType)
{
	if (rawType == QString("server")) {
		return ATLauncher::DownloadType::Server;
	} else if (rawType == QString("browser")) {
		return ATLauncher::DownloadType::Browser;
	} else if (rawType == QString("direct")) {
		return ATLauncher::DownloadType::Direct;
	}

	return ATLauncher::DownloadType::Unknown;
}

static ATLauncher::ModType parseModType(QString rawType)
{
	// See https://wiki.atlauncher.com/mod_types
	if (rawType == QString("root")) {
		return ATLauncher::ModType::Root;
	} else if (rawType == QString("forge")) {
		return ATLauncher::ModType::Forge;
	} else if (rawType == QString("jar")) {
		return ATLauncher::ModType::Jar;
	} else if (rawType == QString("mods")) {
		return ATLauncher::ModType::Mods;
	} else if (rawType == QString("flan")) {
		return ATLauncher::ModType::Flan;
	} else if (rawType == QString("dependency") ||
			   rawType == QString("depandency")) {
		return ATLauncher::ModType::Dependency;
	} else if (rawType == QString("ic2lib")) {
		return ATLauncher::ModType::Ic2Lib;
	} else if (rawType == QString("denlib")) {
		return ATLauncher::ModType::DenLib;
	} else if (rawType == QString("coremods")) {
		return ATLauncher::ModType::Coremods;
	} else if (rawType == QString("mcpc")) {
		return ATLauncher::ModType::MCPC;
	} else if (rawType == QString("plugins")) {
		return ATLauncher::ModType::Plugins;
	} else if (rawType == QString("extract")) {
		return ATLauncher::ModType::Extract;
	} else if (rawType == QString("decomp")) {
		return ATLauncher::ModType::Decomp;
	} else if (rawType == QString("texturepack")) {
		return ATLauncher::ModType::TexturePack;
	} else if (rawType == QString("resourcepack")) {
		return ATLauncher::ModType::ResourcePack;
	} else if (rawType == QString("shaderpack")) {
		return ATLauncher::ModType::ShaderPack;
	} else if (rawType == QString("texturepackextract")) {
		return ATLauncher::ModType::TexturePackExtract;
	} else if (rawType == QString("resourcepackextract")) {
		return ATLauncher::ModType::ResourcePackExtract;
	} else if (rawType == QString("millenaire")) {
		return ATLauncher::ModType::Millenaire;
	}

	return ATLauncher::ModType::Unknown;
}

static void loadVersionLoader(ATLauncher::VersionLoader& p, QJsonObject& obj)
{
	p.type = Json::requireString(obj, "type");
	p.choose = Json::ensureBoolean(obj, QString("choose"), false);

	auto metadata = Json::requireObject(obj, "metadata");
	p.latest = Json::ensureBoolean(metadata, QString("latest"), false);
	p.recommended =
		Json::ensureBoolean(metadata, QString("recommended"), false);

	// Minecraft Forge
	if (p.type == "forge") {
		p.version = Json::ensureString(metadata, "version", "");
	}

	// Fabric Loader
	if (p.type == "fabric") {
		p.version = Json::ensureString(metadata, "loader", "");
	}
}

static void loadVersionLibrary(ATLauncher::VersionLibrary& p, QJsonObject& obj)
{
	p.url = Json::requireString(obj, "url");
	p.file = Json::requireString(obj, "file");
	p.md5 = Json::requireString(obj, "md5");

	p.download_raw = Json::requireString(obj, "download");
	p.download = parseDownloadType(p.download_raw);

	p.server = Json::ensureString(obj, "server", "");
}

static void loadVersionConfigs(ATLauncher::VersionConfigs& p, QJsonObject& obj)
{
	p.filesize = Json::requireInteger(obj, "filesize");
	p.sha1 = Json::requireString(obj, "sha1");
}

static void loadVersionMod(ATLauncher::VersionMod& p, QJsonObject& obj)
{
	p.name = Json::requireString(obj, "name");
	p.version = Json::requireString(obj, "version");
	p.url = Json::requireString(obj, "url");
	p.file = Json::requireString(obj, "file");
	p.md5 = Json::ensureString(obj, "md5", "");

	p.download_raw = Json::requireString(obj, "download");
	p.download = parseDownloadType(p.download_raw);

	p.type_raw = Json::requireString(obj, "type");
	p.type = parseModType(p.type_raw);

	// This contributes to the Minecraft Forge detection, where we rely on
	// mod.type being "Forge" when the mod represents Forge. As there is little
	// difference between "Jar" and "Forge, some packs regretfully use "Jar".
	// This will correct the type to "Forge" in these cases (as best it can).
	if (p.name == QString("Minecraft Forge") &&
		p.type == ATLauncher::ModType::Jar) {
		p.type_raw = "forge";
		p.type = ATLauncher::ModType::Forge;
	}

	if (obj.contains("extractTo")) {
		p.extractTo_raw = Json::requireString(obj, "extractTo");
		p.extractTo = parseModType(p.extractTo_raw);
		p.extractFolder =
			Json::ensureString(obj, "extractFolder", "").replace("%s%", "/");
	}

	if (obj.contains("decompType")) {
		p.decompType_raw = Json::requireString(obj, "decompType");
		p.decompType = parseModType(p.decompType_raw);
		p.decompFile = Json::requireString(obj, "decompFile");
	}

	p.description = Json::ensureString(obj, QString("description"), "");
	p.optional = Json::ensureBoolean(obj, QString("optional"), false);
	p.recommended = Json::ensureBoolean(obj, QString("recommended"), false);
	p.selected = Json::ensureBoolean(obj, QString("selected"), false);
	p.hidden = Json::ensureBoolean(obj, QString("hidden"), false);
	p.library = Json::ensureBoolean(obj, QString("library"), false);
	p.group = Json::ensureString(obj, QString("group"), "");
	if (obj.contains("depends")) {
		auto dependsArr = Json::requireArray(obj, "depends");
		for (const auto depends : dependsArr) {
			p.depends.append(Json::requireString(depends));
		}
	}

	p.client = Json::ensureBoolean(obj, QString("client"), false);

	// computed
	p.effectively_hidden = p.hidden || p.library;
}

void ATLauncher::loadVersion(PackVersion& v, QJsonObject& obj)
{
	v.version = Json::requireString(obj, "version");
	v.minecraft = Json::requireString(obj, "minecraft");
	v.noConfigs = Json::ensureBoolean(obj, QString("noConfigs"), false);

	if (obj.contains("mainClass")) {
		auto main = Json::requireObject(obj, "mainClass");
		v.mainClass = Json::ensureString(main, "mainClass", "");
	}

	if (obj.contains("extraArguments")) {
		auto arguments = Json::requireObject(obj, "extraArguments");
		v.extraArguments = Json::ensureString(arguments, "arguments", "");
	}

	if (obj.contains("loader")) {
		auto loader = Json::requireObject(obj, "loader");
		loadVersionLoader(v.loader, loader);
	}

	if (obj.contains("libraries")) {
		auto libraries = Json::requireArray(obj, "libraries");
		for (const auto libraryRaw : libraries) {
			auto libraryObj = Json::requireObject(libraryRaw);
			ATLauncher::VersionLibrary target;
			loadVersionLibrary(target, libraryObj);
			v.libraries.append(target);
		}
	}

	if (obj.contains("mods")) {
		auto mods = Json::requireArray(obj, "mods");
		for (const auto modRaw : mods) {
			auto modObj = Json::requireObject(modRaw);
			ATLauncher::VersionMod mod;
			loadVersionMod(mod, modObj);
			v.mods.append(mod);
		}
	}

	if (obj.contains("configs")) {
		auto configsObj = Json::requireObject(obj, "configs");
		loadVersionConfigs(v.configs, configsObj);
	}
}