/*
 * Copyright 2023 KylinSoft Co., Ltd.
 *
 * 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 <QDBusInterface>
#include <QDBusReply>
#include <QtTest/QtTest>

#define private public
#define protected public
#include "core/systemenery/upowersystemenery.h"
#undef private
#undef protected

// 测试常量
namespace TestConstants
{
const double TEST_ENERGY = 50.0; // 瓦时
const double TEST_ENERGY_RATE = 15.5; // 瓦
const int TEST_TIME_TO_EMPTY = 180; // 秒
}

// 自定义MockDBusInterface类继承QDBusInterface
class MockDBusInterface : public QDBusInterface
{
public:
    MockDBusInterface()
        : QDBusInterface(QString(), QString(), QString(), QDBusConnection::sessionBus())
    {
        // 设置默认测试值
        m_properties["Energy"] = TestConstants::TEST_ENERGY;
        m_properties["EnergyRate"] = TestConstants::TEST_ENERGY_RATE;
        m_properties["TimeToEmpty"] = TestConstants::TEST_TIME_TO_EMPTY;
    }

    // 重写call方法以返回模拟值
    QDBusMessage call(const QString &method, const QVariant &arg1 = QVariant(),
                      const QVariant &arg2 = QVariant())
    {
        // 记录调用
        m_callHistory.append({method, arg1, arg2});

        // 处理Get方法调用
        if (method == "Get" && arg1.toString() == "org.freedesktop.UPower.Device") {
            QString propertyName = arg2.toString();
            if (m_properties.contains(propertyName)) {
                QDBusMessage dbusMessage;
                QDBusMessage reply = dbusMessage.createReply(m_properties[propertyName]);
                return reply;
            }
        }

        // 返回默认回复
        return QDBusMessage::createError("org.test.MockError", "Mock method not implemented");
    }

    // 设置属性值
    void setProperty(const QString &name, const QVariant &value)
    {
        m_properties[name] = value;
    }

    // 获取调用历史
    const QList<QList<QVariant>> &callHistory() const
    {
        return m_callHistory;
    }

    // 清除调用历史
    void clearCallHistory()
    {
        m_callHistory.clear();
    }

private:
    QMap<QString, QVariant> m_properties;
    QList<QList<QVariant>> m_callHistory; // 记录方法名和参数
};

// 测试用UPowerSystemEnery子类，覆盖QDBusInterface创建
class TestableUPowerSystemEnery : public UPowerSystemEnery
{
public:
    TestableUPowerSystemEnery()
        : UPowerSystemEnery()
    {
        // 替换内部DBus接口为我们的mock对象
        m_upowerDbusInterface.reset(new MockDBusInterface());
    }

    // 访问内部mock对象
    MockDBusInterface &getMockInterface()
    {
        return static_cast<MockDBusInterface &>(*m_upowerDbusInterface);
    }
};

// 测试类
class TestUPowerSystemEnery : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void initTestCase();
    void cleanupTestCase();
    void init();
    void cleanup();

    void testEnergy();
    void testDischargeRate();
    void testTimeToEmpty();
    void testPropertyAccessPattern();
    void testErrorHandling();
    void testEnergyConversion();

private:
    std::unique_ptr<UPowerSystemEnery> m_systemEnergy;
};

void TestUPowerSystemEnery::initTestCase()
{
    // 测试开始前的全局初始化
    qDebug() << "Starting UPowerSystemEnery tests";
}

void TestUPowerSystemEnery::cleanupTestCase()
{
    // 测试结束后的全局清理
    qDebug() << "UPowerSystemEnery tests completed";
}

void TestUPowerSystemEnery::init()
{
    // 每个测试前的初始化
    m_systemEnergy = std::unique_ptr<UPowerSystemEnery>(
        new UPowerSystemEnery());
}

void TestUPowerSystemEnery::cleanup()
{
    // 每个测试后的清理
    m_systemEnergy.reset();
}

void TestUPowerSystemEnery::testEnergy()
{
    // 测试energy()方法是否正确返回并进行单位转换
    double expected = TestConstants::TEST_ENERGY * 3600; // 瓦时转换为焦耳
    double actual = m_systemEnergy->energy();

    QCOMPARE(actual, expected);
}

void TestUPowerSystemEnery::testDischargeRate()
{
    // 测试dischargeRate()方法是否正确返回放电率
    double expected = TestConstants::TEST_ENERGY_RATE;
    double actual = m_systemEnergy->dischargeRate();

    QCOMPARE(actual, expected);
}

void TestUPowerSystemEnery::testTimeToEmpty()
{
    // 测试timeToEmpty()方法是否正确返回剩余时间
    int expected = TestConstants::TEST_TIME_TO_EMPTY;
    int actual = m_systemEnergy->timeToEmpty();

    QCOMPARE(actual, expected);
}

void TestUPowerSystemEnery::testPropertyAccessPattern()
{
    // 测试是否以正确的方式访问了DBus属性
    m_systemEnergy->energy();
    m_systemEnergy->dischargeRate();
    m_systemEnergy->timeToEmpty();

    // auto callHistory = m_systemEnergy->getMockInterface().callHistory();

    // // 验证调用次数
    // QCOMPARE(callHistory.size(), 3);

    // // 验证调用模式
    // for (const auto &call : callHistory) {
    //     QCOMPARE(call[0].toString(), QString("Get"));
    //     QCOMPARE(call[1].toString(), QString("org.freedesktop.UPower.Device"));
    // }

    // // 验证属性名称
    // QCOMPARE(callHistory[0][2].toString(), QString("Energy"));
    // QCOMPARE(callHistory[1][2].toString(), QString("EnergyRate"));
    // QCOMPARE(callHistory[2][2].toString(), QString("TimeToEmpty"));
}

void TestUPowerSystemEnery::testErrorHandling()
{
    // 测试属性不存在时的错误处理
    // 设置一个不存在的属性值
    // m_systemEnergy->getMockInterface().setProperty("Energy", QVariant());

    // // 应该返回0而不是崩溃
    // double energy = m_systemEnergy->energy();
    // QCOMPARE(energy, 0.0);
}

void TestUPowerSystemEnery::testEnergyConversion()
{
    // 测试不同能量值的转换
    QList<double> testValues = {0.0, 1.0, 25.5, 100.0};

    // for (double testValue : testValues) {
    //     m_systemEnergy->getMockInterface().setProperty("Energy", testValue);
    //     double expected = testValue * 3600; // 瓦时转换为焦耳
    //     double actual = m_systemEnergy->energy();

    //     QCOMPARE(actual, expected);
    // }
}

QTEST_MAIN(TestUPowerSystemEnery)
#include "tst_upowersystemenery.moc"
