#include "QtWidgetsApplication4.h"
#include <QPainter>
#include <QApplication>
#include <QVBoxLayout>
#include <QMenu>
#include <QDate>
#include <QProcess>
#include <QDir>
#include <QDebug>
//#include <QTextCodec>
#include <QFileInfo>

CardData::CardData(const QString& name, const QString& date, const QString& description)
    : name(name), date(date), description(description), activated(false)
{
}

CardItemDelegate::CardItemDelegate(QObject* parent)
    : QStyledItemDelegate(parent)
{
}

void CardItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option,
    const QModelIndex& index) const
{
    painter->setRenderHint(QPainter::Antialiasing);
    painter->save();

    // 获取数据
    CardData data = index.data(Qt::UserRole).value<CardData>();

    // 绘制卡片背景
    QRect rect = option.rect;
    rect.adjust(8, 4, -8, -4);

    // 创建圆角路径
    QPainterPath path;
    path.addRoundedRect(rect, 8, 8);

    // 绘制阴影
    QColor shadowColor(0, 0, 0, 30);
    for (int i = 0; i < 5; ++i) {
        QRect shadowRect = rect.adjusted(0, i, 0, i);
        QPainterPath shadowPath;
        shadowPath.addRoundedRect(shadowRect, 8, 8);
        painter->fillPath(shadowPath, shadowColor);
    }

    // 绘制卡片背景
    QLinearGradient gradient(rect.topLeft(), rect.bottomLeft());
    if (data.activated) {
        gradient.setColorAt(0, QColor(40, 70, 45));
        gradient.setColorAt(1, QColor(45, 80, 50));
        painter->fillPath(path, gradient);
        painter->setPen(QPen(QColor(60, 180, 90), 2));
    }
    else if (option.state & QStyle::State_Selected) {
        gradient.setColorAt(0, QColor(45, 45, 55));
        gradient.setColorAt(1, QColor(55, 55, 65));
        painter->fillPath(path, gradient);
        painter->setPen(QPen(QColor(70, 130, 180), 2));
    }
    else {
        painter->fillPath(path, QColor(35, 35, 40));
        painter->setPen(QPen(QColor(60, 60, 65)));
    }

    painter->drawPath(path);

    // 设置字体
    QFont nameFont("Microsoft YaHei", 10);
    nameFont.setBold(true);

    QFont normalFont("Microsoft YaHei", 9);

    // 计算文本区域
    int padding = 15;
    QRect nameRect = rect.adjusted(padding, padding, -padding, 0);
    nameRect.setHeight(25);

    QRect dateRect = nameRect;
    dateRect.translate(0, nameRect.height());

    QRect descRect = dateRect;
    descRect.translate(0, dateRect.height());
    descRect.setHeight(40);

    // 绘制文本
    painter->setFont(nameFont);
    painter->setPen(Qt::white);
    painter->drawText(nameRect, Qt::AlignLeft | Qt::AlignVCenter, data.name);

    painter->setFont(normalFont);
    painter->setPen(QColor(180, 180, 180));
    painter->drawText(dateRect, Qt::AlignLeft | Qt::AlignVCenter, data.date);

    painter->setPen(QColor(160, 160, 160));
    painter->drawText(descRect, Qt::AlignLeft | Qt::AlignTop | Qt::TextWordWrap,
        data.description);

    painter->restore();
}

QSize CardItemDelegate::sizeHint(const QStyleOptionViewItem& option,
    const QModelIndex& index) const
{
    Q_UNUSED(option);
    Q_UNUSED(index);
    return QSize(380, 130);
}

MainWindow::MainWindow(QWidget* parent)
    : QWidget(parent)
{
    setupUI();
    setupStyle();

    // 添加示例数据
    for (int i = 1; i <= 10; ++i) {
        CardData data(
            QString("项目 %1").arg(i),
            QDate::currentDate().toString("yyyy-MM-dd"),
            QString("这是项目 %1 的详细描述信息，可以包含多行文本内容。这是一个较长的描述，用于测试换行效果。").arg(i)
        );
        addCardItem(data);
    }
}

void MainWindow::setupUI()
{
    setWindowTitle(tr("卡片列表示例"));
    resize(400, 600);

    QVBoxLayout* layout = new QVBoxLayout(this);
    layout->setContentsMargins(10, 10, 10, 10);
    layout->setSpacing(0);

    listWidget = new QListWidget(this);
    listWidget->setSpacing(10);
    listWidget->setResizeMode(QListWidget::Adjust);
    listWidget->setUniformItemSizes(false);
    listWidget->setViewMode(QListWidget::ListMode);
    listWidget->setVerticalScrollMode(QListWidget::ScrollPerPixel);
    listWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    CardItemDelegate* delegate = new CardItemDelegate(listWidget);
    listWidget->setItemDelegate(delegate);

    // 连接信号
    connect(listWidget, &QListWidget::itemDoubleClicked,
        this, &MainWindow::onItemDoubleClicked);
    listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(listWidget, &QListWidget::customContextMenuRequested,
        this, &MainWindow::showContextMenu);

    layout->addWidget(listWidget);
}

void MainWindow::setupStyle()
{
    setStyleSheet("QWidget {"
        "    background-color: #1e1e1e;"
        "}"
        "QListWidget {"
        "    background-color: #1e1e1e;"
        "    border: none;"
        "    outline: none;"
        "}"
        "QListWidget::item {"
        "    background-color: transparent;"
        "    padding: 4px;"
        "}"
        "QListWidget::item:selected {"
        "    background-color: transparent;"
        "}"
        "QScrollBar:vertical {"
        "    border: none;"
        "    background: #1e1e1e;"
        "    width: 8px;"
        "    margin: 0px;"
        "}"
        "QScrollBar::handle:vertical {"
        "    background: #404040;"
        "    min-height: 20px;"
        "    border-radius: 4px;"
        "}"
        "QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {"
        "    height: 0px;"
        "}"
        "QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {"
        "    background: none;"
        "}"
        "QMenu {"
        "    background-color: #2d2d2d;"
        "    border: 1px solid #404040;"
        "    padding: 5px;"
        "}"
        "QMenu::item {"
        "    background-color: transparent;"
        "    padding: 6px 25px;"
        "    border-radius: 4px;"
        "    color: #ffffff;"
        "}"
        "QMenu::item:selected {"
        "    background-color: #404040;"
        "}"
        "QMenu::separator {"
        "    height: 1px;"
        "    background: #404040;"
        "    margin: 5px 0px;"
        "}"
    );
}

void MainWindow::addCardItem(const CardData& data)
{
    QListWidgetItem* item = new QListWidgetItem(listWidget);
    item->setData(Qt::UserRole, QVariant::fromValue(data));
    item->setSizeHint(QSize(380, 120));
    item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
}

void MainWindow::onItemDoubleClicked(QListWidgetItem* item)
{
    // 先将所有项目设置为未激活状态
    for (int row = 0; row < listWidget->count(); ++row) {
        QListWidgetItem* currentItem = listWidget->item(row);
        CardData data = currentItem->data(Qt::UserRole).value<CardData>();
        data.activated = false;
        currentItem->setData(Qt::UserRole, QVariant::fromValue(data));
    }

    // 设置当前点击项目为激活状态
    CardData data = item->data(Qt::UserRole).value<CardData>();
    data.activated = true;
    item->setData(Qt::UserRole, QVariant::fromValue(data));

    listWidget->viewport()->update();
}

void MainWindow::showContextMenu(const QPoint& pos)
{
    QListWidgetItem* item = listWidget->itemAt(pos);
    if (!item) return;

    QMenu menu(this);

    QAction* sendAction = menu.addAction(tr("发送到设备"));
    menu.addSeparator();
    QAction* editAction = menu.addAction(tr("修改"));
    QAction* deleteAction = menu.addAction(tr("删除"));
    menu.addSeparator();
    QAction* showInExplorerAction = menu.addAction(tr("在资源管理器中显示"));

    // 设置图标
    sendAction->setIcon(QIcon::fromTheme("document-send"));
    editAction->setIcon(QIcon::fromTheme("document-edit"));
    deleteAction->setIcon(QIcon::fromTheme("document-delete"));
    showInExplorerAction->setIcon(QIcon::fromTheme("folder"));

    QAction* action = menu.exec(listWidget->viewport()->mapToGlobal(pos));
    if (!action) return;

    if (action == sendAction)
        sendToDevice(item);
    else if (action == editAction)
        editItem(item);
    else if (action == deleteAction)
        deleteItem(item);
    else if (action == showInExplorerAction)
        showInExplorer(item);
}

void MainWindow::sendToDevice(QListWidgetItem* item)
{
    CardData data = item->data(Qt::UserRole).value<CardData>();
    qDebug() << "发送到设备:" << data.name;
}

void MainWindow::editItem(QListWidgetItem* item)
{
    CardData data = item->data(Qt::UserRole).value<CardData>();
    qDebug() << "编辑项目:" << data.name;
}

void MainWindow::deleteItem(QListWidgetItem* item)
{
    int row = listWidget->row(item);
    delete listWidget->takeItem(row);
}

void MainWindow::showInExplorer(QListWidgetItem* item)
{
    QString path = QDir::currentPath();
#ifdef Q_OS_WIN
    QProcess::startDetached("explorer.exe", { "/select,", QDir::toNativeSeparators(path) });
#elif defined(Q_OS_MAC)
    QProcess::startDetached("open", { "-R", path });
#else
    QProcess::startDetached("xdg-open", { QFileInfo(path).path() });
#endif
}