/* 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 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 <fstream>
#include <string>

#include "PrintInstanceInfo.h"
#include <launch/LaunchTask.h>

#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
namespace
{
#if defined(Q_OS_LINUX)
	void probeProcCpuinfo(QStringList& log)
	{
		std::ifstream cpuin("/proc/cpuinfo");
		for (std::string line; std::getline(cpuin, line);) {
			if (strncmp(line.c_str(), "model name", 10) == 0) {
				log << QString::fromStdString(
					line.substr(13, std::string::npos));
				break;
			}
		}
	}

	void runLspci(QStringList& log)
	{
		// FIXME: fixed size buffers...
		char buff[512];
		int gpuline = -1;
		int cline = 0;
		FILE* lspci = popen("lspci -k", "r");

		if (!lspci)
			return;

		while (fgets(buff, 512, lspci) != NULL) {
			std::string str(buff);
			if (str.length() < 9)
				continue;
			if (str.substr(8, 3) == "VGA") {
				gpuline = cline;
				log << QString::fromStdString(
					str.substr(35, std::string::npos));
			}
			if (gpuline > -1 && gpuline != cline) {
				if (cline - gpuline < 3) {
					log << QString::fromStdString(
						str.substr(1, std::string::npos));
				}
			}
			cline++;
		}
		pclose(lspci);
	}
#elif defined(Q_OS_FREEBSD)
	void runSysctlHwModel(QStringList& log)
	{
		char buff[512];
		FILE* hwmodel = popen("sysctl hw.model", "r");
		while (fgets(buff, 512, hwmodel) != NULL) {
			log << QString::fromUtf8(buff);
			break;
		}
		pclose(hwmodel);
	}

	void runPciconf(QStringList& log)
	{
		char buff[512];
		std::string strcard;
		FILE* pciconf = popen("pciconf -lv -a vgapci0", "r");
		while (fgets(buff, 512, pciconf) != NULL) {
			if (strncmp(buff, "    vendor", 10) == 0) {
				std::string str(buff);
				strcard.append(str.substr(str.find_first_of("'") + 1,
										  str.find_last_not_of("'") -
											  (str.find_first_of("'") + 2)));
				strcard.append(" ");
			} else if (strncmp(buff, "    device", 10) == 0) {
				std::string str2(buff);
				strcard.append(str2.substr(str2.find_first_of("'") + 1,
										   str2.find_last_not_of("'") -
											   (str2.find_first_of("'") + 2)));
			}
			log << QString::fromStdString(strcard);
			break;
		}
		pclose(pciconf);
	}
#endif
	void runGlxinfo(QStringList& log)
	{
		// FIXME: fixed size buffers...
		char buff[512];
		FILE* glxinfo = popen("glxinfo", "r");
		if (!glxinfo)
			return;

		while (fgets(buff, 512, glxinfo) != NULL) {
			if (strncmp(buff, "OpenGL version string:", 22) == 0) {
				log << QString::fromUtf8(buff);
				break;
			}
		}
		pclose(glxinfo);
	}

} // namespace
#endif

void PrintInstanceInfo::executeTask()
{
	auto instance = m_parent->instance();
	QStringList log;

#if defined(Q_OS_LINUX)
	::probeProcCpuinfo(log);
	::runLspci(log);
	::runGlxinfo(log);
#elif defined(Q_OS_FREEBSD)
	::runSysctlHwModel(log);
	::runPciconf(log);
	::runGlxinfo(log);
#endif

	logLines(log, MessageLevel::MeshMC);
	logLines(instance->verboseDescription(m_session, m_serverToJoin),
			 MessageLevel::MeshMC);
	emitSucceeded();
}