#include "dbBrowser.h"
#include "ui_dbBrowser.h"
#include "mainwindow.h"
#include "attributeView.h"
#include <QTabBar>
#include <QRegularExpressionValidator>

DatabaseBrowser::DatabaseBrowser(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::DatabaseBrowser)
    , m_pMainWindow(nullptr)
{
    ui->setupUi(this);
    m_previousTabIndex = -1;

    //正则表达式，只能输入数字
    QRegularExpression regExp("[0-9]+");
    QRegularExpressionValidator* validator = new QRegularExpressionValidator(regExp, this);
    ui->lineEditPage->setValidator(validator);

    connect(ui->tabWidget, &QTabWidget::tabCloseRequested, this, &DatabaseBrowser::onTabCloseRequested);
    connect(ui->tabWidget, &QTabWidget::currentChanged, this, &DatabaseBrowser::onCurrentTabChanged);

    connect(ui->btnAdd, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_addRecord);
    connect(ui->btnRemove, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_removeRecord);
    connect(ui->btnSave, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_submitChanges);
    connect(ui->btnCancle, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_cancleChanges);
    connect(ui->btnRefresh, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_refreshData);

    connect(ui->btnFirstPage, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_firstPage);
    connect(ui->btnPreviousPage, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_previousPage);
    connect(ui->btnNextPage, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_nextPage);
    connect(ui->btnLastPage, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClicked_lastPage);

    connect(ui->lineEditPage, &QLineEdit::returnPressed, this, &DatabaseBrowser::onEditingFinished_page);
}

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

void DatabaseBrowser::setMainWindow(MainWindow* window)
{
    m_pMainWindow = window;
}

int DatabaseBrowser::tabIndex(const QString& tabText)
{
    for(int i = 0; i < ui->tabWidget->count(); i++)
    {
        if(ui->tabWidget->tabText(i) == tabText)
            return i;
    }

    return -1;
}

void DatabaseBrowser::addTab_attribute(const QString& connection, ModelAttributeGroup& attributeGroup)
{
    QString tabText = attributeGroup.strModelName + "/" + attributeGroup.strGroupName;
    int index = tabIndex(tabText);
    if(index != -1)
    {
        ui->tabWidget->setCurrentIndex(index);
        return;
    }

    AttributeView* view = new AttributeView(attributeGroup, ui->tabWidget, connection);
    connect(view, &AttributeView::showMessage, this, &DatabaseBrowser::onShowMessage);
    connect(view->model(), &AttributeTableModel::showMessage, this, &DatabaseBrowser::onShowMessage);
    connect(view->model(), &AttributeTableModel::syncDataStatus, this, &DatabaseBrowser::onSyncDataStatus);
    connect(view->delegate(), &AttributeTableDelegate::showMessage, this, &DatabaseBrowser::onShowMessage);
    index = ui->tabWidget->addTab(view, QIcon(":/img/images/icon_hierarchy.png"), tabText);
    //添加自定义按钮
    /*QPushButton* closeBtn = new QPushButton("");
    closeBtn->setProperty("index", index);
    connect(closeBtn, &QPushButton::clicked, this, &DatabaseBrowser::onBtnClick_tabCloseBtn);
    closeBtn->setFixedSize(12, 12);
    closeBtn->setStyleSheet("QPushButton\n"
                               "{\n"
                               "	border-image: url(:/img/images/btn_close_default.png);\n"
                               "}\n"
                               "QPushButton:hover\n"
                               "{\n"
                               "	border-image: url(:/img/images/btn_close_hover.png);\n"
                               "}\n"
                               "QPushButton:pressed\n"
                               "{\n"
                               "	border-image: url(:/img/images/btn_close_pressed.png);\n"
                               "}");
    QTabBar* tabBar = ui->tabWidget->tabBar();
    tabBar->setTabButton(index, QTabBar::RightSide, closeBtn);*/

    ui->tabWidget->setCurrentIndex(index);
}

void DatabaseBrowser::closeTab_attribute(ModelAttributeGroup& attributeGroup)
{
    if(attributeGroup.groupID == -1) //关闭该模型下所有打开的tab
    {
        //int tabCount = ui->tabWidget->count();
        for(int i = 0; i < ui->tabWidget->count(); i++)
        {
            if(ui->tabWidget->tabText(i).contains(attributeGroup.strModelName + "/"))
            {
                onTabCloseRequested(i);
                i--;
            }
        }

    }
    else //关闭具体的tab
    {
        QString tabText = attributeGroup.strModelName + "/" + attributeGroup.strGroupName;
        int index = tabIndex(tabText);
        if(index == -1)
            return;

        onTabCloseRequested(index);
    }
}

void DatabaseBrowser::closeAllTab_attribute()
{
    int tabCount = ui->tabWidget->count();
    for(int index = 0; index < tabCount; index++)
        onTabCloseRequested(0);
}

void DatabaseBrowser::onTabCloseRequested(int index)
{
    /*QObject* sender = QObject::sender();
    QPushButton* button = qobject_cast<QPushButton*>(sender);
    if(!button)
        return;

    int index = button->property("index").toInt();*/
    QWidget* widget = ui->tabWidget->widget(index);
    ui->tabWidget->removeTab(index);
    delete widget;
}

void DatabaseBrowser::onCurrentTabChanged(int index)
{
    if(m_previousTabIndex != -1)
    {
        ui->tabWidget->setTabIcon(m_previousTabIndex, QIcon(":/img/images/icon_hierarchy_unchecked.png"));
    }
    m_previousTabIndex = index;

    if(index == -1) //最后一个tab关闭时会触发
    {
        ui->btnAdd->setEnabled(false);
        ui->btnRemove->setEnabled(false);
        ui->btnCancle->setEnabled(false);
        ui->btnRefresh->setEnabled(false);
        ui->btnSave->setEnabled(false);
        ui->btnCancle->setEnabled(false);

        ui->btnFirstPage->setEnabled(false);
        ui->btnPreviousPage->setEnabled(false);
        ui->btnNextPage->setEnabled(false);
        ui->btnLastPage->setEnabled(false);
        ui->recordInfo->clear();
        ui->lineEditPage->setEnabled(false);
        ui->lineEditPage->setText("1");
        return;
    }

    ui->tabWidget->setTabIcon(m_previousTabIndex, QIcon(":/img/images/icon_hierarchy.png"));
    QWidget* widget = ui->tabWidget->widget(index);
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        ui->btnAdd->setEnabled(true);
        ui->btnRemove->setEnabled(true);
        ui->btnCancle->setEnabled(true);
        ui->btnRefresh->setEnabled(true);

        ui->btnFirstPage->setEnabled(true);
        ui->btnPreviousPage->setEnabled(true);
        ui->btnNextPage->setEnabled(true);
        ui->btnLastPage->setEnabled(true);
        ui->lineEditPage->setEnabled(true);

        attributeView->active();
    }
}

void DatabaseBrowser::onBtnClicked_addRecord()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
        {
            int row = model->rowCount(); //当前插入都是在最后一行
            /*QModelIndex currentIndex = view->currentIndex();
            if(currentIndex.row() != -1)
                row = currentIndex.row();*/
            model->insertRecord(row);
            ui->btnSave->setEnabled(true);
            ui->btnCancle->setEnabled(true);
        }
    }
}

void DatabaseBrowser::onBtnClicked_removeRecord()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
        {
            QModelIndex currentIndex = view->currentIndex();
            int row = currentIndex.row();
            if( row != -1)
            {
                model->removeRecord(row);
                ui->btnSave->setEnabled(true);
                ui->btnCancle->setEnabled(true);
            }
        }
    }
}

void DatabaseBrowser::onBtnClicked_submitChanges()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
        {
            model->submitChanges();
            attributeView->syncChangeRecord();
        }
    }
}

void DatabaseBrowser::onBtnClicked_cancleChanges()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->cancleChanges();
    }
}

void DatabaseBrowser::onBtnClicked_refreshData()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->refresh();
    }
}

void DatabaseBrowser::onBtnClicked_firstPage()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->firstPage();
    }
}

void DatabaseBrowser::onBtnClicked_previousPage()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->previousPage();
    }
}

void DatabaseBrowser::onBtnClicked_nextPage()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->nextPage();
    }
}

void DatabaseBrowser::onBtnClicked_lastPage()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
            model->lastPage();
    }
}

void DatabaseBrowser::onEditingFinished_page()
{
    QWidget* widget = ui->tabWidget->currentWidget();
    AttributeView* attributeView = qobject_cast<AttributeView*>(widget);
    if(attributeView)
    {
        QTableView* view = attributeView->view();
        AttributeTableModel* model = attributeView->model();
        if(view && model)
        {
            QString strPage = ui->lineEditPage->text();
            bool result = model->setCurrentPage(strPage.toInt());
            if(!result)
                ui->lineEditPage->setText(QString::number(model->currentPage()));
        }

    }
}

void DatabaseBrowser::onSyncDataStatus(bool hasModifiedData, const PaginationInfo& paginationInfo)
{
    ui->btnSave->setEnabled(hasModifiedData);
    ui->btnCancle->setEnabled(hasModifiedData);

    QString recordInfo = QString::fromWCharArray(L"共 %1 条记录").arg(paginationInfo.totalEntries);
    ui->recordInfo->setText(recordInfo);
    ui->lineEditPage->setText(QString::number(paginationInfo.currentPage));
}

void DatabaseBrowser::onShowMessage(MessageDialogType type,const QString& strTitle,const QString& strContent)
{
    if(m_pMainWindow)
        m_pMainWindow->showMessageDialog(type, strTitle, strContent);
}