#include "DialogBase.h"

#include <QMouseEvent>
#include <QVBoxLayout>
#include <QLabel>
#include <QPushButton>
#include <QBoxLayout>
#include <QStyle>


#include "OneShadowEffect.h"


DialogBase::DialogBase(QWidget *parent)
    : QDialog(parent)
{
    m_logger = spdlog::get("ACASetting");
    if(m_logger == nullptr)
    {
        fmt::print("DialogBase: 未发现ACASetting日志记录器，请检查日志记录器是否已初始化。\n");
        return;
    }

    initUI();
    initSettings();
    /* 设置qss */
    connect(&UIStyle, &UIStyleManager::signal_qssChanged, this, &DialogBase::do_setQSS);
    /* 设置默认的UI */
    setQSS();
}

DialogBase::~DialogBase()
{

}

/* 设置标题 */
void DialogBase::setTitle(const QString &title, QSize size)
{
    m_labelTitle->setText(title);
    m_labelTitle->setFixedSize(size);
}

/* 获取标题 */
QString DialogBase::getTitle() const
{
    return m_labelTitle ? m_labelTitle->text() : QString();
}

/* 设置内容容器 */
bool DialogBase::setContentWidget(QWidget *widget)
{
    if(widget == nullptr)
    {
        SPDLOG_LOGGER_ERROR(m_logger, "设置内容容器失败，widget为nullptr");
        return false;
    }
    if(m_widgetContent != nullptr)
    {
        m_layoutBackground->removeWidget(m_widgetContent);
        delete m_widgetContent;
        m_widgetContent = nullptr;
    }
    QSize size = widget->size();
    m_widgetContent = widget;
    m_layoutBackground->insertWidget(1, m_widgetContent);
    m_widgetContent->resize(size);
    return true;
}

/* 设置低栏容器 */
bool DialogBase::setBottomWidget(QWidget *widget)
{
    if(widget == nullptr)
    {
        SPDLOG_LOGGER_ERROR(m_logger, "设置底部容器失败，widget为nullptr");
        return false;
    }
    if(m_widgetBottom != nullptr)
    {
        m_layoutBackground->removeWidget(m_widgetBottom);
        delete m_widgetBottom;
        m_widgetBottom = nullptr;
    }
    m_widgetBottom = widget;
    m_layoutBackground->insertWidget(2, m_widgetBottom);

    return true;
}

/* 初始化UI */
void DialogBase::initUI()
{
    /*--------------------- 设置对话框的属性 -----------------------*/
    this->setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog);
    this->setAttribute(Qt::WA_TranslucentBackground, true);
    // this->setObjectName("DialogBase");


    /*--------------------- 初始化背景容器 -----------------------*/
    m_widgetBackground = new QWidget(this);
    m_widgetBackground->setObjectName("widget_background");
    QVBoxLayout* layout = new QVBoxLayout(this);
    /* 设置边距，就是阴影的宽度 */
    layout->setContentsMargins(20, 20, 20, 20);
    layout->setSpacing(0);
    this->setLayout(layout);
    layout->addWidget(m_widgetBackground);

    /* 创建背景容器内部的布局 */
    m_layoutBackground = new QVBoxLayout(m_widgetBackground);
    m_layoutBackground->setContentsMargins(0, 0, 0, 0);
    m_layoutBackground->setSpacing(0);
    m_widgetBackground->setLayout(m_layoutBackground);

    /*--------------------- 初始顶栏 -----------------------*/
    /* 初始化顶部标题栏，高度56，下面分割线高度1 */
    m_widgetTop = new QWidget(this);
    m_widgetTop->setObjectName("widget_top");
    m_widgetTop->setFixedHeight(56);
    m_layoutBackground->addWidget(m_widgetTop);
    QHBoxLayout* topHBoxLayout = new QHBoxLayout(m_widgetTop);
    m_widgetTop->setLayout(topHBoxLayout);

    /* 初始化标题栏 */
    m_labelTitle = new QLabel(m_widgetTop);
    m_labelTitle->setObjectName("label_title");
    m_labelTitle->setText("Dialog Title");
    m_labelTitle->setFixedSize(120, 18);
    m_labelTitle->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
    /* 初始化关闭按钮 */
    m_pBtn_Close = new QPushButton(m_widgetTop);
    m_pBtn_Close->setObjectName("pBtn_Close");
    m_pBtn_Close->resize(32, 32);
    /* 安装事件过滤器，主要是处理鼠标悬停事件 */
    m_pBtn_Close->installEventFilter(this);
    /* 重新布局顶栏 */
    layoutTop();

    /*--------------------- 初始化内容栏 -----------------------*/
    // m_widgetContent = new QWidget(this);
    // m_layoutBackground->addWidget(m_widgetContent);

    /*--------------------- 初始底栏 -----------------------*/
    m_widgetBottom = new QWidget(this);
    m_widgetBottom->setObjectName("widget_bottom");
    m_widgetBottom->setFixedHeight(88);
    m_layoutBackground->addWidget(m_widgetBottom);
    QHBoxLayout* bottomHBoxLayout = new QHBoxLayout(m_widgetBottom);
    m_widgetBottom->setLayout(bottomHBoxLayout);
    /* 初始化取消按钮 */
    m_pBtn_Cancel = new QPushButton(m_widgetBottom);
    m_pBtn_Cancel->setObjectName("pBtn_Cancel");
    m_pBtn_Cancel->setText("取消");
    m_pBtn_Cancel->setFixedSize(60, 32);
    bottomHBoxLayout->addWidget(m_pBtn_Cancel, 0, Qt::AlignRight | Qt::AlignVCenter);
    /* 初始化确认按钮 */
    m_pBtn_OK = new QPushButton(m_widgetBottom);
    m_pBtn_OK->setObjectName("pBtn_OK");
    m_pBtn_OK->setText("确定");
    m_pBtn_OK->setFixedSize(60, 32);
    bottomHBoxLayout->addWidget(m_pBtn_OK, 0, Qt::AlignRight | Qt::AlignVCenter);
    /* 添加一个底部横向弹簧 */
    bottomHBoxLayout->insertStretch(0, 1);
    /* 设置底部按钮的间距 */
    bottomHBoxLayout->setContentsMargins(32, 24, 32, 32);
    bottomHBoxLayout->setSpacing(16);

    /*--------------------- 设置整体背景 -----------------------*/
    /* 这个背景需要在初始化所有的widget控件之后再设置 */
    // auto screenRect = QGuiApplication::screenAt(QCursor::pos())->geometry();
    // this->resize(screenRect.width(), screenRect.height());
    // /* 设置设置区域居中显示 */
    // m_widgetBackground->move(screenRect.width() / 2 - m_widgetBackground->width() / 2,
    //     screenRect.height() / 2 - m_widgetBackground->height() / 2);
    
    /*--------------------- 创建阴影 -----------------------*/
    auto pShadow = new OneShadowEffect(this);
    m_widgetBackground->setGraphicsEffect(pShadow);

}

/* 初始化其他设置 */
void DialogBase::initSettings()
{
    /* 初始化变量 */
    m_lastPos = QPoint(0, 0);
    /* 连接信号和槽 */
    connect(m_pBtn_Close, &QPushButton::clicked, this, &DialogBase::do_pBtn_Close_Clicked);
    connect(m_pBtn_OK, &QPushButton::clicked, this, &DialogBase::do_pBtn_OK_Clicked);
    connect(m_pBtn_Cancel, &QPushButton::clicked, this, &DialogBase::do_pBtnCancel_clicked);

    /* 设置样式表 */
    // setQSS();
}

/* 加载QSS */
void DialogBase::setQSS()
{
    /* 获取样式表路径 */
    QString qssPath = UIStyle.getQSSPath() + "/dialogbase.qss";
    QFile file(qssPath);
    if(file.open(QFile::ReadOnly))
    {
        QString qss = file.readAll();
        file.close();
        this->setStyleSheet(qss);
    } else
    {
        SPDLOG_LOGGER_ERROR(m_logger, "打开QSS文件失败: {}", qssPath.toStdString());
        SPDLOG_LOGGER_ERROR(m_logger, "错误信息: {}", file.errorString().toStdString());
    }
}

/* 设置top栏的位置布局，标题和关闭按钮的高度起始位置不一样，不方便使用布局，所有手动修改坐标
 * 标题位置32，18，高度18
 * 关闭按钮右对齐16，y12，大小32x32 */
void DialogBase::layoutTop()
{
    m_labelTitle->move(32, 18);
    int x = m_widgetTop->width() - m_pBtn_Close->width() - 16;
    m_pBtn_Close->move(x, 12);
}

/* 确认按钮点击事件 */
void DialogBase::do_pBtn_OK_Clicked()
{
    m_isOK = true;
    this->accept();
}

/* 设置QSS */
void DialogBase::do_setQSS(EUIStyle style)
{
    setQSS();
}

/* 重写鼠标按下事件 */
void DialogBase::mousePressEvent(QMouseEvent *event)
{
    m_lastPos = event->globalPos();
    event->accept();
}

/* 重写鼠标移动事件 */
void DialogBase::mouseMoveEvent(QMouseEvent *event)
{
    auto point = m_widgetTop->mapToGlobal(QPoint(0, 0));
    QRect rect(point, m_widgetTop->size());

    if(!rect.contains(m_lastPos))
    {
        event->accept();
        return;
    }

    int dx = event->globalX() - m_lastPos.x();
    int dy = event->globalY() - m_lastPos.y();
    // m_widgetBackground->move(m_widgetBackground->x() + dx, m_widgetBackground->y() + dy);
    move(x() + dx, y() + dy);
    m_lastPos = event->globalPos();
    event->accept();
}

/* 重写鼠标释放事件 */
void DialogBase::mouseReleaseEvent(QMouseEvent *event)
{
    event->accept();
}

/* 显示事件 */
void DialogBase::showEvent(QShowEvent *event)
{
    QDialog::showEvent(event);

    /* 重新布局顶栏 */
    layoutTop();
}


/* 重新设置大小 */
void DialogBase::resizeEvent(QResizeEvent *event)
{
    QDialog::resizeEvent(event);

    /* 重新布局顶栏 */ 
    layoutTop();
}

/* 事件过滤器 */
bool DialogBase::eventFilter(QObject *watched, QEvent *event)
{
    if(watched == m_pBtn_Close && event->type() == QEvent::HoverEnter)
    {
        m_pBtn_Close->setProperty("Hover", true);
        m_pBtn_Close->style()->unpolish(m_pBtn_Close);
        m_pBtn_Close->style()->polish(m_pBtn_Close);
        m_pBtn_Close->update();
        return true;
    }
    else if(watched == m_pBtn_Close && event->type() == QEvent::HoverLeave)
    {
        m_pBtn_Close->setProperty("Hover", false);
        m_pBtn_Close->style()->unpolish(m_pBtn_Close);
        m_pBtn_Close->style()->polish(m_pBtn_Close);
        m_pBtn_Close->update();
        return true;
    }
    return QDialog::eventFilter(watched, event);
}