#include "numpaddialog.h"
#include <QVBoxLayout>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QLineEdit>
#include <QPushButton>
#include <QLabel>
#include "global.h"

NumPadDialog::NumPadDialog(QWidget* parent)
    : QDialog(parent)
{
    setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog);
    setAttribute(Qt::WA_TranslucentBackground);
    setModal(true);

    // 覆盖整个父窗口，作为半透明遮罩
    if (parent) setGeometry(parent->rect());
    setStyleSheet("background-color: rgba(0,0,0,102);");

    // 面板（居中）
    QWidget* panel = new QWidget(this);
    panel->setObjectName("NumPadPanel");
    panel->setFixedSize(960, 486);
    panel->setStyleSheet(QString(
        "QWidget#NumPadPanel{background-color:%1;border:2px solid %2;border-radius:16px;}")
        .arg(C::PANEL, C::BORDER));

    QVBoxLayout* panelLay = new QVBoxLayout(panel);
    panelLay->setContentsMargins(24, 24, 24, 24);
    panelLay->setSpacing(16);

    // 输入回显
    m_echo = new QLineEdit(panel);
    m_echo->setReadOnly(true);
    m_echo->setEchoMode(QLineEdit::Password);
    m_echo->setAlignment(Qt::AlignCenter);
    m_echo->setFixedHeight(64);
    panelLay->addWidget(m_echo);

    // 数字键区（1-9, 0, 退格, 清除）
    QGridLayout* grid = new QGridLayout();
    grid->setSpacing(10);
    const QString digits[3][3] = {{"1","2","3"},{"4","5","6"},{"7","8","9"}};
    for (int r = 0; r < 3; ++r)
        for (int c = 0; c < 3; ++c) {
            QPushButton* b = new QPushButton(digits[r][c], panel);
            b->setProperty("numpad", true);
            b->setFixedSize(130, 98);
            connect(b, &QPushButton::clicked, this, [this, d = digits[r][c]](){ onDigit(d); });
            grid->addWidget(b, r, c);
        }

    QPushButton* b0 = new QPushButton("0", panel);
    b0->setProperty("numpad", true);
    b0->setFixedSize(130, 98);
    connect(b0, &QPushButton::clicked, this, [this](){ onDigit("0"); });
    grid->addWidget(b0, 3, 0);

    QPushButton* bBack = new QPushButton("退格", panel);
    bBack->setProperty("numpad", true);
    bBack->setStyleSheet("font-size:28px;background-color:#2D3947;color:#E6EDF3;border:1px solid #3D4A59;border-radius:12px;");
    bBack->setFixedSize(130, 98);
    connect(bBack, &QPushButton::clicked, this, &NumPadDialog::onBackspace);
    grid->addWidget(bBack, 3, 1);

    QPushButton* bClear = new QPushButton("清除", panel);
    bClear->setProperty("numpad", true);
    bClear->setStyleSheet("font-size:28px;background-color:#2D3947;color:#E6EDF3;border:1px solid #3D4A59;border-radius:12px;");
    bClear->setFixedSize(130, 98);
    connect(bClear, &QPushButton::clicked, this, &NumPadDialog::onClear);
    grid->addWidget(bClear, 3, 2);

    // 确认 / 取消
    QPushButton* bOk = new QPushButton("确认", panel);
    bOk->setProperty("variant", "primary");
    bOk->setFixedSize(130, 98);
    connect(bOk, &QPushButton::clicked, this, &NumPadDialog::accept);

    QPushButton* bCancel = new QPushButton("取消", panel);
    bCancel->setFixedSize(130, 98);
    connect(bCancel, &QPushButton::clicked, this, &NumPadDialog::reject);

    grid->addWidget(bOk, 3, 3);
    grid->addWidget(bCancel, 3, 4);
    grid->setColumnStretch(4, 0);
    grid->setColumnStretch(5, 1);

    panelLay->addLayout(grid);
    panelLay->addStretch(1);

    // 居中放置面板
    QVBoxLayout* root = new QVBoxLayout(this);
    root->setContentsMargins(0, 0, 0, 0);
    root->addStretch(1);
    root->addWidget(panel, 0, Qt::AlignHCenter);
    root->addStretch(1);

    refreshEcho();
}

void NumPadDialog::setValue(const QString& v)
{
    m_value = v.left(m_maxLen);
    refreshEcho();
}

void NumPadDialog::clear()
{
    m_value.clear();
    refreshEcho();
}

void NumPadDialog::onDigit(const QString& d)
{
    if (m_value.size() >= m_maxLen)
        return; // 超过最大位数忽略
    m_value += d;
    refreshEcho();
}

void NumPadDialog::onBackspace()
{
    if (!m_value.isEmpty())
        m_value.chop(1);
    refreshEcho();
}

void NumPadDialog::onClear()
{
    m_value.clear();
    refreshEcho();
}

void NumPadDialog::refreshEcho()
{
    m_echo->setText(m_value);
    m_echo->setCursorPosition(m_value.size());
}