#include "calendardtedit.h"
#include <QDebug>
#include <QApplication>
#include <QDesktopWidget>
#include <QKeyEvent>
#include <QEvent>

#include "calendarex.h"
#include "UIStyleManager.h"
#include "spdlog/spdlog.h"


CalendarDTEdit::CalendarDTEdit(QWidget *parent) : QDateTimeEdit(parent)
{
    setCalendarPopup(false);// 阻止自带的日历窗口

    setQSS();
}

CalendarDTEdit::~CalendarDTEdit()
{
}

void CalendarDTEdit::CloseCalendar()
{

}

/* 手动触发日期选择弹框 */
void CalendarDTEdit::triggerCalendarPopup()
{

}

/**
 * @brief 设置手动禁止修改日期区域，只能使用弹窗
 * 
 * @param value 是否禁止修改日期区域
 * @param triggerPopup 点击日期区域是否会跳出弹窗
 */
void CalendarDTEdit::setManualDisableEdit(bool value, bool triggerPopup)
{
    if(value)
    {
        setReadOnly(true);
        for(auto& it : children())
        {
            if(it->objectName() == "qt_spinbox_lineedit")
            {
                m_pCalendar = it;
                m_pCalendar->installEventFilter(this);
            }
        }
    }else {
        setReadOnly(false);
        if(m_pCalendar != nullptr)
        {
            m_pCalendar->removeEventFilter(this);
            m_pCalendar = nullptr;
        }
    }
    m_isPopup = triggerPopup;
}

/* 设置禁用日期选择器 */
void CalendarDTEdit::setCalendarEnabled(bool value)
{
    setEnabled(value);
    m_isEnableCalendar = value;
    
    /* 先清空样式表 */
    this->setProperty("disabled", !value);
    /* 重新生效QSS */
    this->style()->unpolish(this);
    this->style()->polish(this);
}

/* 鼠标进入离开事件 */
void CalendarDTEdit::enterEvent(QEvent* event)
{
    if(isEnabled() == false)
    {
        return;
    }

    this->setProperty("hover", true);

    this->style()->unpolish(this);
    this->style()->polish(this);
    QDateTimeEdit::enterEvent(event); // 保持父类行为
}

/* 鼠标离开事件 */
void CalendarDTEdit::leaveEvent(QEvent* event)
{
    if(isEnabled() == false)
    {
        return;
    }

    this->setProperty("hover", false);

    this->style()->unpolish(this);
    this->style()->polish(this);
    QDateTimeEdit::leaveEvent(event); // 保持父类行为
}

void CalendarDTEdit::mousePressEvent(QMouseEvent *e)
{
    Q_UNUSED(e);
    if(m_isEnableCalendar == false)
    {
        return;
    }
    CalendarEx *pC = new CalendarEx(date());
    if (nullptr == pC) return;
    connect(pC, &CalendarEx::sig_DateChanged, this, [this](const QDate& date){
        if (date.isValid()) {
            setDate(date);
        }
    });
    pC->show();
    pC->positionCalendarPopup(this);
}

/* 设置QSS */
void CalendarDTEdit::setQSS()
{
    QString qssPath;
    if(UIStyle.getUIStyle() == EUIStyle::UI_Light)
    {
        qssPath = QString(":/qss/calendardtedit_light.qss");
    }else {
        qssPath = QString(":/qss/calendardtedit_dark.qss");
    }
    QFile file(qssPath);
    if(file.open(QFile::ReadOnly))
    {
        QString qss = file.readAll();
        this->setStyleSheet(qss);
        file.close();
    } else
    {
        SPDLOG_WARN(nullptr, "打开QSS文件失败: {}", qssPath.toStdString());
    }
}


bool CalendarDTEdit::eventFilter(QObject* watched, QEvent* event)
{
    if(watched == m_pCalendar)
    {
        if(event->type() == QEvent::MouseButtonPress)
        {
            // qDebug() << "点击了日期区域";
            if(m_isPopup)
            {
                mousePressEvent(nullptr);
            }
        }
    }
    return QDateTimeEdit::eventFilter(watched, event);
}