/* 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 <QTest>
#include <QSignalSpy>

#include "TestUtil.h"

#include "updater/GoUpdate.h"
#include "updater/DownloadTask.h"
#include "updater/UpdateChecker.h"
#include <FileSystem.h>

using namespace GoUpdate;

FileSourceList encodeBaseFile(const char* suffix)
{
	auto base = QDir::currentPath();
	QUrl localFile = QUrl::fromLocalFile(base + suffix);
	QString localUrlString = localFile.toString(QUrl::FullyEncoded);
	auto item = FileSource("http", localUrlString);
	return FileSourceList({item});
}

Q_DECLARE_METATYPE(VersionFileList)
Q_DECLARE_METATYPE(Operation)

QDebug operator<<(QDebug dbg, const FileSource& f)
{
	dbg.nospace() << "FileSource(type=" << f.type << " url=" << f.url
				  << " comp=" << f.compressionType << ")";
	return dbg.maybeSpace();
}

QDebug operator<<(QDebug dbg, const VersionFileEntry& v)
{
	dbg.nospace() << "VersionFileEntry(path=" << v.path << " mode=" << v.mode
				  << " md5=" << v.md5 << " sources=" << v.sources << ")";
	return dbg.maybeSpace();
}

QDebug operator<<(QDebug dbg, const Operation::Type& t)
{
	switch (t) {
		case Operation::OP_REPLACE:
			dbg << "OP_COPY";
			break;
		case Operation::OP_DELETE:
			dbg << "OP_DELETE";
			break;
	}
	return dbg.maybeSpace();
}

QDebug operator<<(QDebug dbg, const Operation& u)
{
	dbg.nospace() << "Operation(type=" << u.type << " file=" << u.source
				  << " dest=" << u.destination << " mode=" << u.destinationMode
				  << ")";
	return dbg.maybeSpace();
}

class DownloadTaskTest : public QObject
{
	Q_OBJECT
  private slots:
	void initTestCase() {}
	void cleanupTestCase() {}

	void test_parseVersionInfo_data()
	{
		QTest::addColumn<QByteArray>("data");
		QTest::addColumn<VersionFileList>("list");
		QTest::addColumn<QString>("error");
		QTest::addColumn<bool>("ret");

		QTest::newRow("one")
			<< GET_TEST_FILE("data/1.json")
			<< (VersionFileList()
				<< VersionFileEntry{"fileOne", 493,
									encodeBaseFile("/data/fileOneA"),
									"9eb84090956c484e32cb6c08455a667b"}
				<< VersionFileEntry{"fileTwo", 644,
									encodeBaseFile("/data/fileTwo"),
									"38f94f54fa3eb72b0ea836538c10b043"}
				<< VersionFileEntry{"fileThree", 750,
									encodeBaseFile("/data/fileThree"),
									"f12df554b21e320be6471d7154130e70"})
			<< QString() << true;
		QTest::newRow("two")
			<< GET_TEST_FILE("data/2.json")
			<< (VersionFileList()
				<< VersionFileEntry{"fileOne", 493,
									encodeBaseFile("/data/fileOneB"),
									"42915a71277c9016668cce7b82c6b577"}
				<< VersionFileEntry{"fileTwo", 644,
									encodeBaseFile("/data/fileTwo"),
									"38f94f54fa3eb72b0ea836538c10b043"})
			<< QString() << true;
	}
	void test_parseVersionInfo()
	{
		QFETCH(QByteArray, data);
		QFETCH(VersionFileList, list);
		QFETCH(QString, error);
		QFETCH(bool, ret);

		VersionFileList outList;
		QString outError;
		bool outRet = parseVersionInfo(data, outList, outError);
		QCOMPARE(outRet, ret);
		QCOMPARE(outList, list);
		QCOMPARE(outError, error);
	}

	void test_processFileLists_data()
	{
		QTest::addColumn<QString>("tempFolder");
		QTest::addColumn<VersionFileList>("currentVersion");
		QTest::addColumn<VersionFileList>("newVersion");
		QTest::addColumn<OperationList>("expectedOperations");

		QTemporaryDir tempFolderObj;
		QString tempFolder = tempFolderObj.path();
		// update fileOne, keep fileTwo, remove fileThree
		QTest::newRow("test 1")
			<< tempFolder
			<< (VersionFileList()
				<< VersionFileEntry{"data/fileOne", 493,
									FileSourceList() << FileSource(
										"http", "http://host/path/fileOne-1"),
									"9eb84090956c484e32cb6c08455a667b"}
				<< VersionFileEntry{"data/fileTwo", 644,
									FileSourceList() << FileSource(
										"http", "http://host/path/fileTwo-1"),
									"38f94f54fa3eb72b0ea836538c10b043"}
				<< VersionFileEntry{"data/fileThree", 420,
									FileSourceList() << FileSource(
										"http", "http://host/path/fileThree-1"),
									"f12df554b21e320be6471d7154130e70"})
			<< (VersionFileList()
				<< VersionFileEntry{"data/fileOne", 493,
									FileSourceList() << FileSource(
										"http", "http://host/path/fileOne-2"),
									"42915a71277c9016668cce7b82c6b577"}
				<< VersionFileEntry{"data/fileTwo", 644,
									FileSourceList() << FileSource(
										"http", "http://host/path/fileTwo-2"),
									"38f94f54fa3eb72b0ea836538c10b043"})
			<< (OperationList()
				<< Operation::DeleteOp("data/fileThree")
				<< Operation::CopyOp(
					   FS::PathCombine(
						   tempFolder,
						   QString("data/fileOne").replace("/", "_")),
					   "data/fileOne", 493));
	}
	void test_processFileLists()
	{
		QFETCH(QString, tempFolder);
		QFETCH(VersionFileList, currentVersion);
		QFETCH(VersionFileList, newVersion);
		QFETCH(OperationList, expectedOperations);

		OperationList operations;

		shared_qobject_ptr<QNetworkAccessManager> network =
			new QNetworkAccessManager();
		processFileLists(currentVersion, newVersion, QDir::currentPath(),
						 tempFolder, new NetJob("Dummy", network), operations);
		qDebug() << (operations == expectedOperations);
		qDebug() << operations;
		qDebug() << expectedOperations;
		QCOMPARE(operations, expectedOperations);
	}
};

extern "C" {
QTEST_GUILESS_MAIN(DownloadTaskTest)
}

#include "DownloadTask_test.moc"