#include "bootpassword.h"
#include "numpaddialog.h"
#include <QKeyEvent>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLineEdit>
#include <QLabel>
#include <QPushButton>
#include <QTimer>
#include "global.h"

BootPasswordPage::BootPasswordPage(AppContext* ctx, QWidget* parent)
    : BasePage(ctx, parent)
{
    QVBoxLayout* root = new QVBoxLayout(this);
    root->setContentsMargins(0, 0, 0, 0);
    root->addStretch(1);

    QWidget* col = new QWidget(this);
    col->setFixedWidth(600);
    col->setProperty("card", true);           // 登录主体框体背景（面板色 + 圆角边框）
    QVBoxLayout* lay = new QVBoxLayout(col);
    lay->setContentsMargins(40, 40, 40, 40);   // 框体内边距
    lay->setSpacing(50);
    lay->setAlignment(Qt::AlignHCenter);


    // 标题
    QLabel* title = label("请输入开机密码", 60, C::TEXT, true, col);
    title->setAlignment(Qt::AlignCenter);
    lay->addWidget(title);
    lay->addSpacing(30);

    // 密码输入框（只读回显，点击弹出数字键盘）
    m_input = new QLineEdit(col);
    m_input->setReadOnly(true);
    m_input->setEchoMode(QLineEdit::Password);
    m_input->setAlignment(Qt::AlignCenter);
    m_input->setFixedSize(450, 120);
    m_input->setStyleSheet("font-size:80px");
    m_input->setProperty("clickable", true);
    lay->addWidget(m_input, 0, Qt::AlignHCenter);
    lay->addSpacing(40);
    m_input->installEventFilter(this);
    m_input->setFocusPolicy(Qt::StrongFocus);

    // 错误提示（默认隐藏）
    m_error = label("密码输入有误，请重新输入", 80, C::DANGER, true, col);
    m_error->setAlignment(Qt::AlignCenter);
    m_error->setStyleSheet("font-size:80px");
    m_error->hide();
    lay->addWidget(m_error);

    // 确认 / 取消
    QHBoxLayout* btnRow = new QHBoxLayout();
    btnRow->setSpacing(80);
    btnRow->addStretch(1);
    QPushButton* ok = button("确认", "", col);
    ok->setFixedSize(160, 140);
    ok->setStyleSheet("font-size:60px;"); 
    connect(ok, &QPushButton::clicked, this, &BootPasswordPage::onConfirm);
    QPushButton* cancel = button("取消", "", col);
    cancel->setFixedSize(160, 140);
    // 取消语义：选中时红底白字（内联 :focus，确保覆盖全局蓝色选中态）
    cancel->setStyleSheet("font-size:60px;QPushButton:focus{background-color:#E5484D;color:#FFFFFF;border:2px solid #FFA6A9;}");
    connect(cancel, &QPushButton::clicked, this, &BootPasswordPage::onCancel);
    btnRow->addWidget(ok);
    btnRow->addWidget(cancel);
    btnRow->addStretch(1);
    lay->addLayout(btnRow);

    // 忘记密码 / 修改密码（平时红字透明底，按下红底白字）
    const QString linkBtnStyle =
        "QPushButton{color:#E5484D;background:transparent;border:1px solid transparent;border-radius:6px;font-size:30px;}"
        "QPushButton:hover,QPushButton:pressed,QPushButton:focus{background-color:#E5484D;color:#FFFFFF;border:1px solid #FFA6A9;}";
    QHBoxLayout* forgetRow = new QHBoxLayout();
    forgetRow->setSpacing(80);
    forgetRow->addStretch(1);
    QPushButton* forget = button("忘记密码", "", col);
    forget->setFixedSize(130, 60);
    forget->setStyleSheet(linkBtnStyle);
    connect(forget, &QPushButton::clicked, this, &BootPasswordPage::onForget);
    QPushButton* modify = button("修改密码", "", col);
    modify->setFixedSize(130, 60);
    modify->setStyleSheet(linkBtnStyle); 
    connect(modify, &QPushButton::clicked, this, &BootPasswordPage::onForget);
    forgetRow->addWidget(forget);
    forgetRow->addWidget(modify);
    forgetRow->addStretch(1);
    lay->addLayout(forgetRow);

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

    refreshInput();
}

// 点击密码输入框 → 弹出数字键盘（拦截鼠标点击）
bool BootPasswordPage::eventFilter(QObject* obj, QEvent* ev)
{
    if (obj == m_input) {
        if (ev->type() == QEvent::MouseButtonPress) {
            onInputClicked();
            return true;
        }
        if (ev->type() == QEvent::KeyPress) {
            QKeyEvent* ke = static_cast<QKeyEvent*>(ev);
            if (ke->key() == Qt::Key_Return || ke->key() == Qt::Key_Enter) {
                onInputClicked();
                return true;
            }
        }
    }
    return BasePage::eventFilter(obj, ev);
}

void BootPasswordPage::onInputClicked()
{
    if (m_locked)
        return;
    NumPadDialog dlg(this);
    dlg.setMaxLen(4);
    dlg.setValue(m_value);
    if (dlg.exec() == QDialog::Accepted) {
        m_value = dlg.value();
        m_error->hide();
        refreshInput();
    }
}

void BootPasswordPage::onConfirm()
{
    if (m_locked)
        return;

    if (m_value == ctx()->password()) {
        m_wrongCount = 0;
        clearInput();
        emit navigate(PageSelfCheck);
    } else {
        m_wrongCount++;
        clearInput();
        if (m_wrongCount >= 5) {
            // 【设计建议】连续 5 次错误锁定 30s
            m_locked = true;
            m_error->setText("连续输入错误，已锁定 30 秒");
            m_error->show();
            QTimer::singleShot(30000, this, [this]() {
                m_locked = false;
                m_wrongCount = 0;
                m_error->hide();
            });
        } else {
            emit navigate(PageWarning);
        }
    }
}

void BootPasswordPage::onCancel()
{
    clearInput();
}

void BootPasswordPage::onForget()
{
    clearInput();
    emit navigate(PageMgmtLogin);
}

void BootPasswordPage::clearInput()
{
    m_value.clear();
    refreshInput();
}

void BootPasswordPage::focusInput()
{
    onInputClicked();
}

void BootPasswordPage::refreshInput()
{
    const bool empty = m_value.isEmpty();
    // 空态：无论是否被选中都显示提示文字（灰字）；有内容：显示密码圆点
    m_input->setEchoMode(empty ? QLineEdit::Normal : QLineEdit::Password);
    m_input->setText(empty ? "点击输入密码" : m_value);
    m_input->setStyleSheet(empty ? "font-size:50px;color:#9AA7B4;" : "font-size:80px;");
}