// SPDX-FileCopyrightText: 2025 - 2026 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later

#include <gtest/gtest.h>
#include <memory>
#include <vector>
#include <string>
#include <thread>
#include <atomic>
#include <chrono>
#include <climits>

#include <dfm-extension/window/dfmextwindowproxy.h>
#include <dfm-extension/window/dfmextwindow.h>
#include <dfm-extension/window/private/dfmextwindowproxyprivate.h>
#include "stubext.h"

using namespace dfmext;

class TestDFMExtWindowProxy : public testing::Test
{
public:
    void SetUp() override
    {
        std::cout << "start TestDFMExtWindowProxy" << std::endl;
        // 创建实际的 DFMExtWindowProxy 实例进行测试
        privateImpl = new DFMExtWindowProxyPrivate();
        windowProxy = new DFMExtWindowProxy(privateImpl);
    }

    void TearDown() override
    {
        std::cout << "end TestDFMExtWindowProxy" << std::endl;
        delete windowProxy;
        windowProxy = nullptr;
        privateImpl = nullptr;  // windowProxy destructor will delete privateImpl
        stub.clear();
    }

public:
    DFMExtWindowProxy *windowProxy {nullptr};
    DFMExtWindowProxyPrivate *privateImpl {nullptr};
    stub_ext::StubExt stub;
};

// ==================== DFMExtWindowProxy 单元测试 ====================

TEST_F(TestDFMExtWindowProxy, createAndDestroy)
{
    // 测试创建和销毁
    DFMExtWindowProxyPrivate *priv = new DFMExtWindowProxyPrivate();
    DFMExtWindowProxy *proxy = new DFMExtWindowProxy(priv);
    EXPECT_NE(proxy, nullptr);
    EXPECT_NE(priv, nullptr);
    EXPECT_EQ(proxy->d, priv);
    
    // 测试创建后立即销毁，确保内存管理正确
    delete proxy;
    SUCCEED();
}

TEST_F(TestDFMExtWindowProxy, createWindow)
{
    // 测试创建窗口
    std::string url = "/test/path";
    DFMExtWindow *window = windowProxy->createWindow(url);
    
    // 根据当前实现，应该返回空指针（TODO: impl me）
    EXPECT_EQ(window, nullptr);
    
    // 测试空 URL
    DFMExtWindow *window2 = windowProxy->createWindow("");
    EXPECT_EQ(window2, nullptr);
    
    // 测试多次创建相同窗口
    DFMExtWindow *window3 = windowProxy->createWindow(url);
    EXPECT_EQ(window3, nullptr);
}

TEST_F(TestDFMExtWindowProxy, showWindow)
{
    // 测试显示窗口
    uint64_t winId = 12345;
    windowProxy->showWindow(winId);
    
    // 根据当前实现，这个方法应该不会崩溃（TODO: impl me）
    SUCCEED();
    
    // 测试显示不存在的窗口
    uint64_t invalidWinId = 0;
    windowProxy->showWindow(invalidWinId);
    SUCCEED();
    
    // 测试显示最大值窗口 ID
    uint64_t maxWinId = UINT64_MAX;
    windowProxy->showWindow(maxWinId);
    SUCCEED();
}

TEST_F(TestDFMExtWindowProxy, windowIdList)
{
    // 测试获取窗口 ID 列表
    std::vector<uint64_t> windowIds = windowProxy->windowIdList();
    
    // 根据当前实现，应该返回空列表（TODO: impl me）
    EXPECT_TRUE(windowIds.empty());
    EXPECT_EQ(windowIds.size(), 0);
    
    // 多次调用结果应该一致
    std::vector<uint64_t> windowIds2 = windowProxy->windowIdList();
    EXPECT_EQ(windowIds.size(), windowIds2.size());
    EXPECT_TRUE(windowIds == windowIds2);
}

TEST_F(TestDFMExtWindowProxy, destructor)
{
    // 测试析构函数
    DFMExtWindowProxyPrivate *priv = new DFMExtWindowProxyPrivate();
    DFMExtWindowProxy *proxy = new DFMExtWindowProxy(priv);
    
    // 验证内部指针正确设置
    EXPECT_EQ(proxy->d, priv);
    
    // 析构应该正确清理 privateImpl
    delete proxy;
    SUCCEED();
}

// ==================== 边界条件和压力测试 ====================

TEST_F(TestDFMExtWindowProxy, createWindowBoundaryConditions)
{
    // 边界条件测试：创建窗口
    
    // 测试长路径
    std::string longPath(1000, 'a');
    DFMExtWindow *window1 = windowProxy->createWindow(longPath);
    EXPECT_EQ(window1, nullptr);
    
    // 测试包含特殊字符的路径
    std::string specialPath = "/path/with/special@#$%^&*()chars";
    DFMExtWindow *window2 = windowProxy->createWindow(specialPath);
    EXPECT_EQ(window2, nullptr);
    
    // 测试 Unicode 路径
    std::string unicodePath = "/路径/包含/中文/字符";
    DFMExtWindow *window3 = windowProxy->createWindow(unicodePath);
    EXPECT_EQ(window3, nullptr);
    
    // 测试空字符串路径
    std::string emptyPath = "";
    DFMExtWindow *window4 = windowProxy->createWindow(emptyPath);
    EXPECT_EQ(window4, nullptr);
}

TEST_F(TestDFMExtWindowProxy, showWindowBoundaryConditions)
{
    // 边界条件测试：显示窗口
    
    // 测试各种窗口 ID
    std::vector<uint64_t> testIds = {
        0,           // 最小值
        1,           // 最小有效值
        UINT32_MAX,  // 32位最大值
        UINT64_MAX,  // 64位最大值
        123456789,   // 大数值
        0xFFFFFFFF   // 边界值
    };
    
    for (uint64_t id : testIds) {
        windowProxy->showWindow(id);
        SUCCEED();  // 只要没有崩溃就成功
    }
}

TEST_F(TestDFMExtWindowProxy, memoryLeakTest)
{
    // 内存泄漏测试
    for (int i = 0; i < 1000; ++i) {
        DFMExtWindowProxyPrivate *priv = new DFMExtWindowProxyPrivate();
        DFMExtWindowProxy *proxy = new DFMExtWindowProxy(priv);
        
        // 执行各种操作
        proxy->createWindow("/test/path");
        proxy->showWindow(12345);
        proxy->windowIdList();
        
        delete proxy;
    }
    
    SUCCEED();  // 如果能到达这里说明没有明显的内存泄漏
}

TEST_F(TestDFMExtWindowProxy, threadSafetyTest)
{
    // 线程安全测试（简单版本）
    const int iterationCount = 100;
    std::atomic<int> successCount(0);
    
    auto worker1 = [this, &successCount]() {
        for (int i = 0; i < iterationCount; ++i) {
            windowProxy->createWindow("/test/path" + std::to_string(i));
            successCount++;
        }
    };
    
    auto worker2 = [this, &successCount]() {
        for (int i = 0; i < iterationCount; ++i) {
            windowProxy->showWindow(i);
            successCount++;
        }
    };
    
    auto worker3 = [this, &successCount]() {
        for (int i = 0; i < iterationCount; ++i) {
            windowProxy->windowIdList();
            successCount++;
        }
    };
    
    std::thread t1(worker1);
    std::thread t2(worker2);
    std::thread t3(worker3);
    
    t1.join();
    t2.join();
    t3.join();
    
    EXPECT_EQ(successCount.load(), iterationCount * 3);
}

TEST_F(TestDFMExtWindowProxy, performanceTest)
{
    // 性能测试
    auto startTime = std::chrono::high_resolution_clock::now();
    
    const int iterationCount = 10000;
    
    // 测试 createWindow 性能
    for (int i = 0; i < iterationCount; ++i) {
        windowProxy->createWindow("/test/path" + std::to_string(i));
    }
    
    // 测试 showWindow 性能
    for (int i = 0; i < iterationCount; ++i) {
        windowProxy->showWindow(i);
    }
    
    // 测试 windowIdList 性能
    for (int i = 0; i < iterationCount; ++i) {
        windowProxy->windowIdList();
    }
    
    auto endTime = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(endTime - startTime);
    
    // 性能应该在合理范围内（这里设置为5秒）
    EXPECT_LT(duration.count(), 5000) << "Performance test took too long: " << duration.count() << "ms";
}

TEST_F(TestDFMExtWindowProxy, consistencyTest)
{
    // 一致性测试
    
    // 多次调用 windowIdList 应该返回一致的结果
    std::vector<uint64_t> list1 = windowProxy->windowIdList();
    std::vector<uint64_t> list2 = windowProxy->windowIdList();
    std::vector<uint64_t> list3 = windowProxy->windowIdList();
    
    EXPECT_EQ(list1.size(), list2.size());
    EXPECT_EQ(list2.size(), list3.size());
    EXPECT_TRUE(list1 == list2);
    EXPECT_TRUE(list2 == list3);
    
    // 多次创建相同路径的窗口应该返回相同的结果
    std::string testPath = "/test/consistency";
    DFMExtWindow *window1 = windowProxy->createWindow(testPath);
    DFMExtWindow *window2 = windowProxy->createWindow(testPath);
    DFMExtWindow *window3 = windowProxy->createWindow(testPath);
    
    EXPECT_EQ(window1, window2);
    EXPECT_EQ(window2, window3);
    EXPECT_EQ(window3, nullptr);  // 根据当前实现
}

TEST_F(TestDFMExtWindowProxy, integrationTest)
{
    // 集成测试：测试多个方法的组合使用
    
    // 1. 创建多个窗口
    std::vector<std::string> paths = {
        "/home/user",
        "/tmp",
        "/var/log",
        "/opt/application"
    };
    
    std::vector<DFMExtWindow*> windows;
    for (const auto& path : paths) {
        DFMExtWindow *window = windowProxy->createWindow(path);
        windows.push_back(window);
    }
    
    // 2. 获取窗口 ID 列表
    std::vector<uint64_t> windowIds = windowProxy->windowIdList();
    
    // 3. 尝试显示窗口（使用假设的 ID）
    for (uint64_t id = 1000; id < 1000 + windows.size(); ++id) {
        windowProxy->showWindow(id);
    }
    
    // 验证基本行为
    for (DFMExtWindow *window : windows) {
        EXPECT_EQ(window, nullptr);  // 根据当前实现
    }
    
    EXPECT_TRUE(windowIds.empty());  // 根据当前实现
}

TEST_F(TestDFMExtWindowProxy, errorHandlingTest)
{
    // 错误处理测试
    
    // 测试各种异常输入
    std::vector<std::string> invalidPaths = {
        "",                    // 空路径
        std::string(10000, 'x'), // 极长路径
        "\x00\x01\x02",        // 二进制数据
        "/invalid\x00path",    // 包含空字符的路径
    };
    
    for (const auto& path : invalidPaths) {
        DFMExtWindow *window = windowProxy->createWindow(path);
        EXPECT_EQ(window, nullptr) << "Should handle invalid path: " << path;
    }
    
    // 测试无效的窗口 ID
    std::vector<uint64_t> invalidIds = {
        UINT64_MAX,  // 最大值
        0,           // 零值
        0xFFFFFFFF   // 特殊边界值
    };
    
    for (uint64_t id : invalidIds) {
        windowProxy->showWindow(id);
        SUCCEED();  // 只要没有崩溃就成功
    }
}


