#include "settingnum.h"
#include "ui_settingnum.h"

#include <QDebug>
#include <QFile>
#include <QPainter>

#include "customcombobox.h"
#include "onesettingitem.h"
#include "oneshadow.h"

SettingNum::SettingNum(QDialog *parent) :
    QDialog(parent),
    ui(new Ui::SettingNum)
{
    ui->setupUi(this);

    m_logger = spdlog::get("EyeMap");
    if(m_logger == nullptr)
    {
        qDebug() << "获取 EyeMap logger 失败";
        return;
    }
    /* 注册事件过滤，主要是消除滚轮对comboBox的影响 */
    ui->comboBox_rowNum->installEventFilter(this);
    ui->comboBox_columnNum->installEventFilter(this);

    /* 设置无边框和背景透明 */
    this->setWindowFlags(Qt::FramelessWindowHint);
    this->setAttribute(Qt::WA_TranslucentBackground);
    /* 加载QSS */
    QFile fileQss(":/qss/SettingNum/SettingNum.qss");
    if(fileQss.open(QFile::ReadOnly))
    {
        QString qss = fileQss.readAll();
        this->setStyleSheet(qss);
        fileQss.close();
    } else
    {
        SPDLOG_LOGGER_ERROR(m_logger, "加载QSS文件失败");
    }
    /* 设置阴影 */
    m_shadow = new OneShadow(ui->widget->size(), 16);
    ui->verticalLayout->setMargin(16);

    /* 初始化变量 */
    for(auto item : m_listItem)
    {
        item = nullptr;
    }

    // ui->pBtn_close->move(ui->widget_top->width() - 40, 13);

    /* 设置下拉框可选个数 */
    QStringList listRow;
    listRow << "1" << "2" << "3" << "4";
    ui->comboBox_rowNum->addItems(listRow);
    ui->comboBox_columnNum->addItem("1");
    ui->comboBox_columnNum->addItem("2");
    ui->comboBox_rowNum->setCurrentIndex(1);
    ui->comboBox_columnNum->setCurrentIndex(1);


    connect(ui->pBtn_close, &QPushButton::clicked, this, &SettingNum::do_pBtn_close);
    connect(ui->pBtn_ok, &QPushButton::clicked, this, &SettingNum::do_pBtn_ok);
    connect(ui->pBtn_cancel, &QPushButton::clicked, this, &SettingNum::do_pBtn_cancel);

    connect(ui->comboBox_rowNum, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &SettingNum::do_selectRowAndColumn);
    connect(ui->comboBox_columnNum, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &SettingNum::do_selectRowAndColumn);

}

SettingNum::~SettingNum()
{
    for(auto item : m_listItem)
    {
        if(item == nullptr)
        {
            continue;
        }
        delete item;
        item = nullptr;
    }
    if(m_shadow != nullptr)
    {
        delete m_shadow;
        m_shadow = nullptr;
    }
    delete ui;
}

/* 设置行数和列数 */
void SettingNum::setRowAndColumn(int row, int column)
{
    ui->comboBox_rowNum->setCurrentIndex(row - 1);
    ui->comboBox_columnNum->setCurrentIndex(column - 1);
    /* 根据 行 x 列 总数计算需要显示的个数 */
    int num = row * column;
    for(int i = 0; i < 8; i++)
    {
        OneSettingItem *item = new OneSettingItem(ui->widget_list);
        item->setNum(i + 1);
        connect(item, &OneSettingItem::signal_select_channel, this, &SettingNum::do_selectChannel);
        m_listItem.append(item);
    }
    /* 移动item的位置 */
    layoutItem(num);
}

/* 设置每个项的信息 */
void SettingNum::setEveryEyeMapInfo(const QList<OneEyeMapInfo> &listInfo)
{
    for(auto &item : m_listItem)
    {
        for(auto &info : listInfo)
        {
            if(item->getNum() == info.num)
            {
                item->setItemInfo(info);
                break;
            }
        }
    }
}

/* 设置可用的通道信息 */
void SettingNum::setChannelList(const QList<OneChannelInfo> &listChannelInfo)
{
    for(auto &item : m_listItem)
    {
        item->setChannelList(listChannelInfo);
    }
}

/* 绘制阴影 */
void SettingNum::paintEvent(QPaintEvent *event)
{
    // QPainter painter(this);
    // painter.setRenderHint(QPainter::Antialiasing);
    // painter.drawImage(QPoint(0,0),m_shadow->image());
}

/* 事件过滤器 */
bool SettingNum::eventFilter(QObject *watched, QEvent *event)
{
    if(watched == ui->comboBox_rowNum || watched == ui->comboBox_columnNum)
    {
        if(event->type() == QEvent::Wheel)
        {
            return true;
        }
    }
    return QWidget::eventFilter(watched, event);
}

/* 关闭按钮槽函数 */
void SettingNum::do_pBtn_close()
{
    this->close();
}

/* 点击了OK按钮 */
void SettingNum::do_pBtn_ok()
{
    isOk = true;
    row = ui->comboBox_rowNum->currentText().toInt();
    column = ui->comboBox_columnNum->currentText().toInt();

    /* 更新全局信息 */
    for(auto &item : m_listItem)
    {
        GEyeMapInfo.updateSettingNum(item->getEyeMapInfo());
    }

    this->close();
}

/* 点击了取消按钮 */
void SettingNum::do_pBtn_cancel()
{
    isOk = false;
    this->close();
}

/* 选择行和列槽函数 */
void SettingNum::do_selectRowAndColumn(int index)
{
    row = ui->comboBox_rowNum->currentText().toInt();
    column = ui->comboBox_columnNum->currentText().toInt();
    int num = row * column;
    layoutItem(num);
}

/* 通道选择槽函数，选择了一个通道，取消其他项可能已经选择的相同通道 */
void SettingNum::do_selectChannel(const OscChnNum channel, const QString &channelName)
{
    auto sender = qobject_cast<OneSettingItem*>(QObject::sender());
    for(auto item : m_listItem)
    {
        if((item->getCurrentChannel().channel == channel) && (item != sender))
        {
            item->setCurrentChannel(GEyeMapInfo.getChannelName(OscChnNum::Osc_None));
        }
    }
}


/**
 * @brief 布局item
 * 
 * @param num 需要显示的几个item
 */
void SettingNum::layoutItem(int num)
{
    for(auto item : m_listItem)
    {
        auto dy = (item->getNum() - 1) * 48;
        item->move(0, dy);
        if(item->getNum() > num)
        {
            item->hide();
        } else
        {
            item->show();
        }
    }
    
}