#include "bootpassword.h"
#include "numpaddialog.h"
#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(800);
    QVBoxLayout* lay = new QVBoxLayout(col);
    lay->setSpacing(24);
    lay->setAlignment(Qt::AlignHCenter);

    // 品牌区
    QLabel* brand = label("“玉兔”工业无线遥控器", 32, C::TEXT, true, col);
    brand->setAlignment(Qt::AlignCenter);
    QLabel* model = label("YTZT6K8EART2-aL25", 20, C::TEXT_SUB, false, col);
    model->setAlignment(Qt::AlignCenter);
    lay->addWidget(brand);
    lay->addWidget(model);
    lay->addSpacing(20);

    // 标题
    QLabel* title = label("请输入开机密码", 28, C::TEXT, true, col);
    title->setAlignment(Qt::AlignCenter);
    lay->addWidget(title);

    // 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(400, 88);
    m_input->setPlaceholderText("点击输入密码");
    m_input->setProperty("clickable", true);
    lay->addWidget(m_input, 0, Qt::AlignHCenter);
    m_input->installEventFilter(this);
    m_input->setFocusPolicy(Qt::NoFocus);

    // 错误提示（默认隐藏）
    m_error = label("密码输入有误，请重新输入", 18, C::DANGER, true, col);
    m_error->setAlignment(Qt::AlignCenter);
    m_error->hide();
    lay->addWidget(m_error);

    // 确认 / 取消
    QHBoxLayout* btnRow = new QHBoxLayout();
    btnRow->setSpacing(40);
    btnRow->addStretch(1);
    QPushButton* ok = button("确认", "primary", col);
    ok->setFixedSize(180, 72);
    connect(ok, &QPushButton::clicked, this, &BootPasswordPage::onConfirm);
    QPushButton* cancel = button("取消", "", col);
    cancel->setFixedSize(180, 72);
    connect(cancel, &QPushButton::clicked, this, &BootPasswordPage::onCancel);
    btnRow->addWidget(ok);
    btnRow->addWidget(cancel);
    btnRow->addStretch(1);
    lay->addLayout(btnRow);

    // 忘记密码链接
    QPushButton* forget = button("忘记密码／修改密码", "link", col);
    forget->setFixedHeight(44);
    forget->setCursor(Qt::PointingHandCursor);
    connect(forget, &QPushButton::clicked, this, &BootPasswordPage::onForget);
    lay->addWidget(forget);

    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 && ev->type() == QEvent::MouseButtonPress) {
        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()
{
    m_input->setText(m_value);
}