#include "timewidget.h"
#include "ui_timewidget.h"
#include <QListWidgetItem>
#include <QMouseEvent>
#include <QDebug>
#include <QSizePolicy>
#include <QFile>
#include "timepartwidget.h"
#include "shadowwidget.h"
#include "UIStyleManager.h"
#include "spdlog/spdlog.h"
#include "timepopupwidget.h"

TimeWidget::TimeWidget(QWidget *parent, ShowType type) :
    QFrame(parent),
    ui(new Ui::TimeWidget),
    m_wdgTimeArea(nullptr),
    m_pMainWindow(parent),
    m_type(type)
{
    ui->setupUi(this);
    Init();
}


// TimeWidget::TimeWidget(ShowType type) : 
//     QFrame(nullptr),
//     ui(new Ui::TimeWidget),
//     m_wdgTimeArea(nullptr),
//     m_pMainWindow(nullptr),
//     m_type(type)
// {
//     ui->setupUi(this);
//     Init();
// }

TimeWidget::~TimeWidget()
{
    delete ui;
}


void TimeWidget::SetMainWindow(QWidget* pWidget)
{
    if (nullptr != m_pMainWindow) {
        this->removeEventFilter(m_pMainWindow);
    }
    if (nullptr != pWidget) {
        pWidget->installEventFilter(this);
    }
    m_pMainWindow = pWidget;
}

/* 返回时间 */
QTime TimeWidget::getTime()
{
    return ui->dateTimeEdit->time();
}



void TimeWidget::setTime(const QTime& t)
{
    ui->dateTimeEdit->setTime(t);
    ui->lbl_tip->hide();
    ui->dateTimeEdit->show();
    UpdatePopupTime(ui->dateTimeEdit->dateTime());
    m_formerDateTime.setTime(t);
}

void TimeWidget::clearTime()
{
    ui->dateTimeEdit->setTime(QTime(0, 0, 0));
    ui->dateTimeEdit->hide();
    ui->lbl_tip->show();
}

QString TimeWidget::tipText() const
{
    return ui->lbl_tip->text();
}
/* 设置时间选择区域的大小，不能超过时间编辑栏的大小，这个主要是防止时间栏太宽，影响美观 */
// void TimeWidget::setTimeAreaWidth(int w)
// {
//     if(w < 0)
//     {
//         m_width = 0;
//     }
//     else if(w > this->width())
//     {
//         m_width = this->width();
//     }
//     else
//     {
//         m_width = w;
//     }
// }

void TimeWidget::showTimeEditArea()
{
    this->show();
    ShowPopupArea(true);
}

/* 以弹窗的模式模态显示 */
void TimeWidget::execShow()
{
    QEventLoop loop;
    connect (this, &TimeWidget::signal_close, &loop, &QEventLoop::quit);
    this->show();
    ShowPopupArea(true);
    loop.exec();

    deleteLater();
}

/* 设置时间图标 */
void TimeWidget::setIcon(const QString& icon)
{
    /* 设置图片适应按钮大小 */
    QString ss = QString("border-image: url(%1)").arg(icon);
    ui->btn_tip->setStyleSheet(ss);
    ui->btn_tip->show();
}

/* 设置图标显示 */
void TimeWidget::setIconShow(bool isShow)
{
    if(isShow)
    {
        ui->btn_tip->show();
    }else {
        ui->btn_tip->hide();
    }
}

/* 设置图标大小 */
void TimeWidget::setIconSize(int w, int h)
{
    ui->btn_tip->setMinimumSize(w, h);
    /* 设置为固定大小 */
    ui->btn_tip->setFixedSize(w, h);
    // ui->btn_tip->resize(w, h);
}

/* 设置编辑栏大小 */
void TimeWidget::setEditLine(int w, int h)
{
    this->resize(w, h);
}

/* 设置禁止使用滚轮修改时间 */
void TimeWidget::setWheelDisabled(bool disabled)
{
    m_isDisableWheel = disabled;
}


/* 设置启用与否*/
void TimeWidget::setEditLineEnable(bool enable)
{
    this->setEnabled(enable);
    if(!enable)
    {
        if(m_pTimePopupWidget != nullptr && m_pTimePopupWidget->isVisible())
        {
            m_isBanPopupShow = true;
            ShowPopupArea(false);
            UpdateProperty(this, "hover", false);
        }
        ui->btn_tip->hide();
    }else 
    {
        ui->btn_tip->show();
    }
}


/* 设置QSS */
void TimeWidget::setQSS()
{
    QString qssPath;
    if(UIStyle.getUIStyle() == EUIStyle::UI_Light)
    {
        qssPath = ":/Res/light/timewidget.qss";
    } else {
        qssPath = ":/Res/dark/timewidget.qss";
    }

    QFile file(qssPath);
    if(file.open(QFile::ReadOnly))
    {
        QString styleSheet = QLatin1String(file.readAll());
        setStyleSheet(styleSheet);
        file.close();
    }
    else 
    {
        SPDLOG_ERROR("open qss file failed: {}", qssPath.toStdString());
    }
}


/* 点击了时间图标 */
void TimeWidget::do_pBtn_tip_Clicked()
{
    if(m_pTimePopupWidget == nullptr)
    {
        return;
    }
    if(m_pTimePopupWidget->isVisible())
    {
        return;
    }
    /* 展示弹窗 */
    showTimeEditArea();
}

/**
 * @brief 这里添加了两个信号，一个是修改过的新时间，一个是旧时间
 * @param obj
 * @param e
 * @return
 */
bool TimeWidget::eventFilter(QObject* obj, QEvent* e)
{
    if (obj == ui->dateTimeEdit) 
    {
        if(e->type() == QEvent::Wheel && m_isDisableWheel)
        {
            // 禁止滚轮修改时间
            return true;
        }
        if (e->type() == QEvent::FocusIn && m_type == EditLine)
        {
            /* 如果Popup正在关闭 */

                if(m_isBanPopupShow == true)
                {
                    m_isBanPopupShow = false;
                    /* 这里需要再次失去焦点，否则下次点击编辑栏无法弹出Popup */
                    ui->dateTimeEdit->clearFocus();
                    return QWidget::eventFilter(obj, e);
                }
            
            
            //qInfo() << "dateTimeEdit focusIn";
            ShowPopupArea(true);
            UpdateProperty(ui->btn_tip, "selected", true);
            // emit signal_formerTimer(ui->dateTimeEdit->time());
        }
        return QWidget::eventFilter(obj, e);
    } 
    else if (obj == ui->lbl_tip) 
    {
        if (e->type() == QEvent::MouseButtonPress && m_type == EditLine)
        {
            //qInfo() << "mouseButtonPress";
            ui->dateTimeEdit->show();
            ui->lbl_tip->hide();
            ShowPopupArea(true);
            //ui->dateTimeEdit->setFocus();//
            return QWidget::eventFilter(obj, e);
        }
    } 
    else if (obj == this) 
    {
        if (e->type() == QEvent::Enter) 
        {
            UpdateProperty(this, "hover", true);
        } else if (e->type() == QEvent::Leave &&
                   ((m_wdgTimeArea.isNull() && !ui->dateTimeEdit->hasFocus()) ||
                    (m_wdgTimeArea && m_wdgTimeArea->isHidden())) ) {
            UpdateProperty(this, "hover", false);
        }
    }
    /* 判断是不是显示区外面，是的话就隐藏 */
    QMouseEvent* pMouse = reinterpret_cast<QMouseEvent*>(e);
    if (nullptr != pMouse) 
    {
        if (pMouse->type() == QEvent::MouseButtonPress) 
        {
            //qInfo() << "focusOut";
            QPoint gtl = this->mapToGlobal(rect().topLeft());
            QRect rc(gtl.x(), gtl.y(), width(), height()); // 全局位置判断
            if (!rc.contains(pMouse->globalPos())) 
            {
                if(m_wdgTimeArea == nullptr)
                {
                    return QWidget::eventFilter(obj, e);
                }
                /* Pupop不可见，直接返回 */
                if(!m_wdgTimeArea->isVisible())
                {
                    return QWidget::eventFilter(obj, e);
                }
                /* 如果焦点不在编辑栏，Popup窗口隐藏后，编辑栏会重新获取焦点，将会再次跳出Popup窗口
                    因此在其没有焦点的时候设置 m_isBanPopupShow ，防止Popup隐藏后编辑栏再次获取焦点再次弹出Popup */
                if(!ui->dateTimeEdit->hasFocus())
                {
                    m_isBanPopupShow = true;
                }
                
                ShowPopupArea(false);
                UpdateProperty(this, "hover", false);
                
                if(m_type == Dialog)
                {
                    this->close();
                }
            }
        }
    }

    return QWidget::eventFilter(obj, e);
}
/**
 * @brief m_wdgTimeArea跟随时间栏移动
 * @param event
 */
void TimeWidget::moveEvent(QMoveEvent *event)
{
    if(m_type == Dialog && m_wdgTimeArea != nullptr)
    {
        QPoint pt = this->mapTo(m_pMainWindow, QPoint(0, 0));
        m_wdgTimeArea->move(QPoint(pt.x() - SHADOW_MARGIN, pt.y() + this->height()));
//        qDebug() << "posX:" << pt.x() << "posY:" << pt.y();
    }
}

/* 这个用来实时修改编辑栏的时间 */
void TimeWidget::do_dateTimeChanged(const QTime& dt)
{
    ui->dateTimeEdit->setTime(dt);
}


/**
 * @brief QDateTimeEdit控件时间改变事件
 * @param dt
 */
void TimeWidget::onDateTimeChanged(const QDateTime& dt)
{
    if (dt.time() != QTime(0, 0, 0)) {
        UpdateProperty(ui->btn_tip, "selected", true);
    }
    // 同步到popupWidget
    if (!m_bTimeFlag) {
        UpdatePopupTime(dt);
    }
    m_bTimeFlag = false;
}

/* 关闭Popup弹窗 */
void TimeWidget::do_closePopup(bool isOk)
{
    if(isOk == false)
    {
        ui->dateTimeEdit->setTime(m_formerDateTime.time());
    }
    m_isBanPopupShow = true;
    ShowPopupArea(false);
    UpdateProperty(this, "hover", false);
    if(m_type == Dialog)
    {
        this->close();
    }
}


void TimeWidget::UpdateProperty(QObject* obj, const char *name, bool flag)
{
    if (nullptr == obj || nullptr == name) {
        return;
    }
    obj->setProperty(name, flag);
    QWidget* pWdg = qobject_cast<QWidget*>(obj);
    if (nullptr != pWdg) {
        this->style()->unpolish(pWdg);
        this->style()->polish(pWdg);
    }
}
/**
 * @brief 更新popup列表选中时间
 * @param dt
 */
void TimeWidget::UpdatePopupTime(const QDateTime& dt)
{
    // 如果时间列表还没初始化就不会设置时间了
    if(m_pTimePopupWidget == nullptr)
    {
        return;
    }
    m_pTimePopupWidget->setTime(dt);
    // for (int i = 0; i < m_vecTimeSections.size(); ++i) 
    // {
    //     auto type = m_vecTimeSections.at(i);
    //     TimePartWidget::emSection emType = static_cast<TimePartWidget::emSection>(type);
    //     if (emType >= TimePartWidget::emSection::MAX_SECTION) {
    //         continue;
    //     }
    //     if (i < m_vecTimePart.size()) 
    //     {
    //         TimePartWidget* pWdg = m_vecTimePart.at(i);
    //         if (nullptr == pWdg) continue;
    //         pWdg->SetTime(dt);
    //     }
    // }
}

/**
 * @brief wdgTimeArea区域是创建出来的，不属于ui区域，他的父类是m_pMainWindow，因此移动的时候需要使用m_pMainWindow的坐标
 * @param bShow
 */
void TimeWidget::ShowPopupArea(bool bShow)
{
    if (m_wdgTimeArea.isNull()) 
    {
        CreatePopupWidget();
    }
    if (!m_wdgTimeArea.isNull()) 
    {
        if (bShow) 
        {
            // 重新定位再显示
            QPoint pt = this->mapTo(m_pMainWindow, QPoint(0, 0));
            m_wdgTimeArea->move(QPoint(pt.x() - SHADOW_MARGIN, pt.y() + this->height()));

            /* 设置弹窗Popup的大小，使用默认的固定大小，不允许改变
               关于高度：确定取消按钮所占的高度是固定的32，和一节大小一样，所以这里 */
            int width = 2 * SHADOW_MARGIN + TIME_AREA_WIDTH * m_vecTimeSections.size();
            int height = TIME_AREA_HEIGHT * 7 + 2 * SHADOW_MARGIN + 8;
            m_wdgTimeArea->resize(QSize(width, height));
            UpdatePopupTime(ui->dateTimeEdit->dateTime());
            /* 保存现在的时间 */
            m_formerDateTime = ui->dateTimeEdit->dateTime();
            m_wdgTimeArea->show();
        } else 
        {
            m_wdgTimeArea->hide();
            emit signal_close();
            /* 关闭显示，发送携带时间的信号，判断一下时间是否改变，不改变不发信号 */
            if(m_formerDateTime.time() != ui->dateTimeEdit->time())
            {
                emit signal_timeChanged(m_formerDateTime.time(), ui->dateTimeEdit->time());
            }
            /* 让编辑栏失去焦点 */
            ui->dateTimeEdit->clearFocus();
        }
    }
}

void TimeWidget::CreatePopupWidget()
{
    // CreateTimeArea
    m_vecTimeSections = {TimePartWidget::HOUR, TimePartWidget::MINUTE, TimePartWidget::SECOND};
    // CreateTimeVector(m_vecTimeSections);
    if(m_pTimePopupWidget == nullptr)
    {
        m_pTimePopupWidget = new TimePopupWidget();
        m_pTimePopupWidget->Init(m_vecTimeSections);
        connect(m_pTimePopupWidget, &TimePopupWidget::signal_timeChanged, this, &TimeWidget::do_dateTimeChanged);
        connect(m_pTimePopupWidget, &TimePopupWidget::signal_closePopup, this, &TimeWidget::do_closePopup);
    }
    m_wdgTimeArea.reset(new ShadowWidget(m_pMainWindow));
    if (!m_wdgTimeArea.isNull()) 
    {
        if (m_wdgTimeArea->centralWidget() != nullptr) 
        {
            m_wdgTimeArea->centralWidget()->setObjectName(QLatin1String("wdg_TimeArea"));
            m_wdgTimeArea->centralWidget()->setStyleSheet("QWidget#wdg_TimeArea{border-radius: 2px;border: none; }");
        }

        /* 创建显示时间条的HBox */
        QHBoxLayout* hLayout = new QHBoxLayout();
        hLayout->setMargin(1);
        hLayout->setSpacing(0);
        m_wdgTimeArea->setCentralLayout(hLayout);
        if (nullptr == m_wdgTimeArea->getLayout()) 
        {
            delete hLayout;
            hLayout = nullptr;
        }
        m_wdgTimeArea->resize(QSize(width() + 2 * SHADOW_MARGIN, TIME_AREA_HEIGHT * 6 + 2 * SHADOW_MARGIN));
        m_wdgTimeArea->setMaximumWidth(width() + 2 * SHADOW_MARGIN);
        m_wdgTimeArea->hide();

        if (nullptr != m_wdgTimeArea->getLayout()) 
        {
            m_wdgTimeArea->getLayout()->addWidget(m_pTimePopupWidget);
            // foreach (auto wdg, m_vecTimePart) 
            // {
            //     m_wdgTimeArea->getLayout()->addWidget(wdg);
            //     connect(wdg, &TimePartWidget::sigItemClicked, this, &TimeWidget::onListItemClicked);
            // }
        }

    }
}

/* 初始化函数 */
void TimeWidget::Init()
{
    /* 设置QSS */
    setQSS();
    // InitUI
    ui->dateTimeEdit->hide();
    ui->dateTimeEdit->installEventFilter(this);
    this->installEventFilter(this);
    ui->lbl_tip->installEventFilter(this);
    if (nullptr != m_pMainWindow) {
        m_pMainWindow->installEventFilter(this);
    }
    ui->btn_tip->setProperty("selected", false);

    /* 设置时间图标大小 */
    ui->btn_tip->setFixedSize(16, 16);

    /* 设置初始值 */
    QTime t(0, 0, 0);
    ui->dateTimeEdit->setTime(t);
    ui->lbl_tip->hide();
    /* 使用这个阻止show的时候获取焦点自动弹出Popup */
    m_isBanPopupShow = true;
    ui->dateTimeEdit->show();
    m_formerDateTime.setTime(t);

    connect(ui->btn_tip, &QPushButton::clicked, this, &TimeWidget::do_pBtn_tip_Clicked);
    connect(ui->dateTimeEdit, &QDateTimeEdit::dateTimeChanged, this, &TimeWidget::onDateTimeChanged);

    // setDefaultStyle();
    
}