#include "passwordmgmt.h"
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QPushButton>
#include <QCheckBox>
#include <QEvent>
#include <QColor>
#include <QGraphicsDropShadowEffect>
#include "global.h"

namespace {

class CardFocusGlow : public QObject
{
public:
    CardFocusGlow(QWidget* card, const QString& normalQss, const QString& focusQss,
                  const QColor& glow, QObject* parent = nullptr)
        : QObject(parent), m_card(card), m_normal(normalQss), m_focus(focusQss), m_glow(glow) {}

protected:
    bool eventFilter(QObject* obj, QEvent* ev) override
    {
        if (ev->type() == QEvent::FocusIn) {
            m_card->setStyleSheet(m_focus);
            if (!m_card->graphicsEffect()) {
                QGraphicsDropShadowEffect* g = new QGraphicsDropShadowEffect(m_card);   // 偏移 0 → 四周光晕
                g->setBlurRadius(40);
                g->setOffset(0, 0);
                g->setColor(m_glow);
                m_card->setGraphicsEffect(g);
            }
        } else if (ev->type() == QEvent::FocusOut) {
            m_card->setStyleSheet(m_normal);
            QWidget* parent = m_card->parentWidget();
            // 光晕溢出卡片矩形，只重绘卡片自身会留下残影，把父控件一并标脏
            m_card->setGraphicsEffect(nullptr);   // Qt 会删除旧效果
            m_card->update();
            if (parent)
                parent->update(parent->rect());
        }
        return QObject::eventFilter(obj, ev);
    }

private:
    QWidget* m_card;
    QString m_normal;
    QString m_focus;
    QColor  m_glow;
};

} // namespace

PasswordMgmtPage::PasswordMgmtPage(AppContext* ctx, QWidget* parent)
    : BasePage(ctx, parent)
{
    QVBoxLayout* root = new QVBoxLayout(this);
    root->addStretch(1);

    QWidget* col = new QWidget(this);
    col->setFixedWidth(700);
    QVBoxLayout* lay = new QVBoxLayout(col);
    lay->setSpacing(50);
    lay->setAlignment(Qt::AlignHCenter);

    QLabel* title = label("密码管理界面", 60, C::TEXT, true, col);
    title->setAlignment(Qt::AlignCenter);
    lay->addWidget(title);

    // 功能选项列表
    QWidget* option = new QWidget(col);
    option->setProperty("card", true);
    const QString cardQss = QString("QWidget[card=\"true\"]{background-color:%1;border:2px solid %2;border-radius:12px;}")
                                .arg(C::PANEL, C::BORDER);
    const QString cardFocusQss = QString("QWidget[card=\"true\"]{background-color:%1;border:3px solid %2;border-radius:12px;}")
                                     .arg(C::PANEL, "#8ABFFF");
    option->setStyleSheet(cardQss);
    QVBoxLayout* optLay = new QVBoxLayout(option);
    m_reset = new QCheckBox("重置密码功能", option);
    m_reset->setChecked(true);
    m_reset->setStyleSheet(QString(
        "QCheckBox{color:%1;font-size:40px;spacing:16px;}"
        "QCheckBox::indicator{width:40px;height:40px;border:2px solid %2;border-radius:6px;background-color:%3;}"
        "QCheckBox::indicator:checked{background-color:%4;border-color:%4;image:none;}"
        "QCheckBox:focus{color:#FFFFFF;}"
        "QCheckBox:focus::indicator{border:4px solid #8ABFFF;}")
        .arg(C::TEXT, C::BORDER, C::BG, C::PRIMARY));
    // 复选框获得焦点（Tab 选中）时点亮整个卡片
    m_reset->installEventFilter(new CardFocusGlow(option, cardQss, cardFocusQss, QColor("#7FBBFF"), m_reset));
    optLay->addWidget(m_reset);
    lay->addWidget(option);

    // 确认 / 退出
    QHBoxLayout* btnRow = new QHBoxLayout();
    btnRow->setSpacing(80);
    btnRow->addStretch(1);
    QPushButton* ok = button("确认", "", col);
    ok->setFixedSize(160, 120);
    ok->setStyleSheet("font-size:60px;");
    connect(ok, &QPushButton::clicked, this, [this]() { emit navigate(PageReset); });
    QPushButton* exit = button("退出", "", col);
    exit->setFixedSize(160, 120);
    exit->setStyleSheet(cancelButtonStyle(60));   // 选中时红底白字
    connect(exit, &QPushButton::clicked, this, [this]() { emit navigate(PageBoot); });
    btnRow->addWidget(ok);
    btnRow->addWidget(exit);
    btnRow->addStretch(1);
    lay->addLayout(btnRow);

    root->addWidget(col, 0, Qt::AlignHCenter);
    root->addStretch(1);
}