#include "QFDApp.h"
#include "ui_QFDApp.h"
#include "CustomGrip.h"

#include <QPropertyAnimation>
#include <QTimer>
#include <QDebug>
#include <QParallelAnimationGroup>

class Settings
{
public:
    static bool ENABLE_CUSTOM_TITLE_BAR;
    static int MENU_WIDTH;
    static int LEFT_BOX_WIDTH;
    static int RIGHT_BOX_WIDTH;
    static int TIME_ANIMATION;

    // BTNS LEFT AND RIGHT BOX COLORS
    static QString BTN_LEFT_BOX_COLOR;
    static QString BTN_RIGHT_BOX_COLOR;

    // MENU SELECTED STYLESHEET
    static QString MENU_SELECTED_STYLESHEET;
};

bool Settings::ENABLE_CUSTOM_TITLE_BAR = true;
int Settings::MENU_WIDTH               = 240;
int Settings::LEFT_BOX_WIDTH           = 240;
int Settings::RIGHT_BOX_WIDTH          = 240;
int Settings::TIME_ANIMATION           = 500;
QString Settings::BTN_LEFT_BOX_COLOR   = "background-color: rgb(44, 49, 58);";
QString Settings::BTN_RIGHT_BOX_COLOR  = "background-color: #ff79c6;";
QString Settings::MENU_SELECTED_STYLESHEET =
        "border-left: 22px solid qlineargradient(spread:pad, x1:0.034, y1:0, x2:0.216, y2:0, stop:0.499 rgba(255, 121, "
        "198, 255), stop:0.5 rgba(85, 170, 255, 0));  background-color: rgb(40, 44, 52);";

static bool GLOBAL_STATE     = false;
static bool GLOBAL_TITLE_BAR = true;

QFDApp::QFDApp(QWidget *parent) : QMainWindow(parent), ui(new Ui::QFDApp)
{
    ui->setupUi(this);

    init();
}

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

/**
 * @brief TOGGLE MENU
 * @param checked
 */
void QFDApp::toggleMenu()
{
    // GET WIDTH
    int width = ui->leftMenuBg->width();
    //        qDebug() << width;
    int maxExtend     = Settings::MENU_WIDTH;
    int widthExtended = 60;  // default

    // SET MAX WIDTH
    if (width == 60) {
        widthExtended = maxExtend;
    }

    QPropertyAnimation *animation = new QPropertyAnimation(ui->leftMenuBg, QByteArray("minimumWidth"));
    animation->setDuration(Settings::TIME_ANIMATION);
    animation->setStartValue(width);
    animation->setEndValue(widthExtended);
    animation->setEasingCurve(QEasingCurve::InOutQuart);
    animation->start(QAbstractAnimation::DeleteWhenStopped);
}

void QFDApp::maximizeRestore()
{
    if (!GLOBAL_STATE) {
        this->showMaximized();
        GLOBAL_STATE = true;
        ui->appMargins->setContentsMargins(0, 0, 0, 0);
        ui->maximizeRestoreAppBtn->setToolTip("向下还原");
        ui->maximizeRestoreAppBtn->setIcon(QIcon(":/res/icons/icon_restore.png"));
        ui->frame_size_grip->hide();
        this->m_leftGrip->hide();
        this->m_rightGrip->hide();
        this->m_topGrip->hide();
        this->m_bottomGrip->hide();
    } else {
        GLOBAL_STATE = false;
        this->showNormal();
        this->resize(this->width() + 1, this->height() + 1);
        ui->appMargins->setContentsMargins(10, 10, 10, 10);
        ui->maximizeRestoreAppBtn->setToolTip("最大化");
        ui->maximizeRestoreAppBtn->setIcon(QIcon(":/res/icons/icon_maximize.png"));
        ui->frame_size_grip->show();
        this->m_leftGrip->show();
        this->m_rightGrip->show();
        this->m_topGrip->show();
        this->m_bottomGrip->show();
    }
}

void QFDApp::leftMenuButtonClick()
{
    QPushButton *btn = qobject_cast<QPushButton *>(sender());
    QString btnName  = btn->objectName();

    if (btnName == "btn_home") {
        ui->stackedWidget->setCurrentWidget(ui->home);
        this->resetStyle(btnName);
        btn->setStyleSheet(this->selectMenu(btn->styleSheet()));
    }

    if (btnName == "btn_widgets") {
        ui->stackedWidget->setCurrentWidget(ui->widgets);
        this->resetStyle(btnName);
        btn->setStyleSheet(this->selectMenu(btn->styleSheet()));
    }

    if (btnName == "btn_new") {
        ui->stackedWidget->setCurrentWidget(ui->new_page);
        this->resetStyle(btnName);
        btn->setStyleSheet(this->selectMenu(btn->styleSheet()));
    }

    if (btnName == "btn_save") {
        qDebug() << "Save BTN clicked!";
    }
    qDebug() << "Button " + btnName + " clicked!";
}

void QFDApp::openCloseLeftBox()
{
    // GET WIDTH
    int width         = ui->extraLeftBox->width();
    int widthRightBox = ui->extraRightBox->width();
    //    int maxExtend     = Settings::LEFT_BOX_WIDTH;
    QString color = Settings::BTN_LEFT_BOX_COLOR;
    //    int standard      = 0;

    // GET BTN STYLE
    QString style = ui->toggleLeftBox->styleSheet();

    // SET MAX WIDTH
    if (width == 0) {
        // SELECT BTN
        ui->toggleLeftBox->setStyleSheet(style + color);
        if (widthRightBox != 0) {
            style = ui->settingsTopBtn->styleSheet();
            ui->settingsTopBtn->setStyleSheet(style.replace(Settings::BTN_LEFT_BOX_COLOR, ""));
        }
    } else {
        // RESET BTN
        ui->toggleLeftBox->setStyleSheet(style.replace(color, ""));
    }

    this->startBoxAnimation(width, widthRightBox, "left");
}

void QFDApp::openCloseRightBox()
{  // GET WIDTH
    int width        = ui->extraRightBox->width();
    int widthLeftBox = ui->extraLeftBox->width();
    int maxExtend    = Settings::RIGHT_BOX_WIDTH;
    QString color    = Settings::BTN_RIGHT_BOX_COLOR;
    int standard     = 0;

    // GET BTN STYLE
    QString style = ui->settingsTopBtn->styleSheet();

    // SET MAX WIDTH
    if (width == 0) {
        // SELECT BTN
        ui->settingsTopBtn->setStyleSheet(style + color);
        if (widthLeftBox != 0) {
            style = ui->toggleLeftBox->styleSheet();
            ui->toggleLeftBox->setStyleSheet(style.replace(Settings::BTN_LEFT_BOX_COLOR, ""));
        }
    } else {
        // RESET BTN
        ui->settingsTopBtn->setStyleSheet(style.replace(color, ""));
    }

    this->startBoxAnimation(widthLeftBox, width, "right");
}

void QFDApp::init()
{
    // USE CUSTOM TITLE BAR | USE AS "False" FOR MAC OR LINUX
    Settings::ENABLE_CUSTOM_TITLE_BAR = true;

    // APP NAME
    QString title       = "QFD - 专家决策软件";
    QString description = "QFD APP - Dracula主题风格.";
    this->setWindowTitle(title);
    ui->titleRightInfo->setText(description);

    // TOGGLE MENU
    connect(ui->toggleButton, &QPushButton::clicked, this, &QFDApp::toggleMenu);
    uiDefinitions();

    // QTableWidget PARAMETERS
    ui->tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);

    // LEFT MENUS
    connect(ui->btn_home, &QPushButton::clicked, this, &QFDApp::leftMenuButtonClick);
    connect(ui->btn_widgets, &QPushButton::clicked, this, &QFDApp::leftMenuButtonClick);
    connect(ui->btn_new, &QPushButton::clicked, this, &QFDApp::leftMenuButtonClick);
    connect(ui->btn_save, &QPushButton::clicked, this, &QFDApp::leftMenuButtonClick);

    // EXTRA LEFT BOX
    connect(ui->toggleLeftBox, &QPushButton::clicked, this, &QFDApp::openCloseLeftBox);
    connect(ui->extraCloseColumnBtn, &QPushButton::clicked, this, &QFDApp::openCloseLeftBox);

    // EXTRA RIGHT BOX
    connect(ui->settingsTopBtn, &QPushButton::clicked, this, &QFDApp::openCloseRightBox);

    // SET CUSTOM THEME
    bool useCustomTheme = false;
    QString themeFile   = "themes\\py_dracula_light.qss";

    // SET THEME AND HACKS
    if (useCustomTheme) {
        // LOAD AND APPLY STYLE
        this->loadTheme(themeFile, true);

        // SET HACKS
        this->setThemeHack();
    }

    // SET HOME PAGE AND SELECT MENU

    ui->stackedWidget->setCurrentWidget(ui->home);
    ui->btn_home->setStyleSheet(this->selectMenu(ui->btn_home->styleSheet()));
}

void QFDApp::loadTheme(const QString &file, bool useCustomTheme)
{
    if (useCustomTheme) {
        QFile qssFile(file);
        if (qssFile.open(QIODevice::ReadOnly)) {
            QTextStream in(&qssFile);
            in.setCodec("UTF-8");
            this->setStyle(nullptr);
            this->setStyleSheet(in.readAll());
            qssFile.close();
        }
    }
}

void QFDApp::setThemeHack()
{
    Settings::BTN_LEFT_BOX_COLOR  = "background-color: #495474;";
    Settings::BTN_RIGHT_BOX_COLOR = "background-color: #495474;";
    Settings::MENU_SELECTED_STYLESHEET =
            "border-left: 22px solid qlineargradient(spread:pad, x1:0.034, y1:0, x2:0.216, y2:0, stop:0.499 rgba(255, "
            "121, 198, 255), stop:0.5 rgba(85, 170, 255, 0)); background-color: #566388;";

    // SET MANUAL STYLES
    ui->lineEdit->setStyleSheet("background-color: #6272a4;");
    ui->pushButton->setStyleSheet("background-color: #6272a4;");
    ui->plainTextEdit->setStyleSheet("background-color: #6272a4;");
    ui->tableWidget->setStyleSheet(
            "QScrollBar:vertical { background: #6272a4; } QScrollBar:horizontal { background: #6272a4; }");
    ui->scrollArea->setStyleSheet(
            "QScrollBar:vertical { background: #6272a4; } QScrollBar:horizontal { background: #6272a4; }");
    ui->comboBox->setStyleSheet("background-color: #6272a4;");
    ui->horizontalScrollBar->setStyleSheet("background-color: #6272a4;");
    ui->verticalScrollBar->setStyleSheet("background-color: #6272a4;");
    ui->commandLinkButton->setStyleSheet("color: #ff79c6;");
}

void QFDApp::uiDefinitions()
{
    ui->settingsTopBtn->setToolTip("右侧设置");
    ui->minimizeAppBtn->setToolTip("最小化");
    ui->maximizeRestoreAppBtn->setToolTip("最大化");
    ui->closeAppBtn->setToolTip("关闭");
    ui->toggleLeftBox->setToolTip("设置");

    ui->titleRightInfo->installEventFilter(this);

    if (Settings::ENABLE_CUSTOM_TITLE_BAR) {
        // STANDARD TITLE BAR
        this->setWindowFlags(Qt::FramelessWindowHint);
        this->setAttribute(Qt::WA_TranslucentBackground);

        // CUSTOM GRIPS
        this->m_leftGrip   = new CustomGrip(this, Qt::LeftEdge, true);
        this->m_rightGrip  = new CustomGrip(this, Qt::RightEdge, true);
        this->m_topGrip    = new CustomGrip(this, Qt::TopEdge, true);
        this->m_bottomGrip = new CustomGrip(this, Qt::BottomEdge, true);
    } else {
        ui->appMargins->setContentsMargins(0, 0, 0, 0);
        ui->minimizeAppBtn->hide();
        ui->maximizeRestoreAppBtn->hide();
        ui->closeAppBtn->hide();
        ui->frame_size_grip->hide();
    }

    // DROP SHADOW
    this->shadow = new QGraphicsDropShadowEffect(this);
    this->shadow->setBlurRadius(17);
    this->shadow->setXOffset(0);
    this->shadow->setYOffset(0);
    this->shadow->setColor(QColor(0, 0, 0, 150));
    ui->bgApp->setGraphicsEffect(this->shadow);

    // RESIZE WINDOW
    this->sizegrip = new QSizeGrip(ui->frame_size_grip);
    this->sizegrip->setStyleSheet("width: 20px; height: 20px; margin 0px; padding: 0px;");

    // MINIMIZE
    connect(ui->minimizeAppBtn, &QPushButton::clicked, this, &QFDApp::showMinimized);
    // MAXIMIZE/RESTORE
    connect(ui->maximizeRestoreAppBtn, &QPushButton::clicked, this, &QFDApp::maximizeRestore);
    // CLOSE APPLICATION
    connect(ui->closeAppBtn, &QPushButton::clicked, this, &QFDApp::close);
}

bool QFDApp::returStatus()
{
    return GLOBAL_STATE;
}

void QFDApp::setStatus(bool status)
{
    GLOBAL_STATE = status;
}

QString QFDApp::selectMenu(const QString &getStyle)
{
    QString select = getStyle + Settings::MENU_SELECTED_STYLESHEET;
    return select;
}

QString QFDApp::deselectMenu(const QString &getStyle)
{
    QString style    = getStyle;
    QString deselect = style.replace(Settings::MENU_SELECTED_STYLESHEET, "");
    return deselect;
}

/**
 * @brief START SELECTION
 * @param widget
 */
void QFDApp::selectStandardMenu(const QString &widget)
{
    for (auto w : ui->topMenu->findChildren<QPushButton *>()) {
        if (w->objectName() != widget) {
            w->setStyleSheet(this->selectMenu(w->styleSheet()));
        }
    }
}

/**
 * @brief RESET SELECTION
 * @param widget
 */
void QFDApp::resetStyle(const QString &widget)
{
    for (auto w : ui->topMenu->findChildren<QPushButton *>()) {
        if (w->objectName() != widget) {
            w->setStyleSheet(this->deselectMenu(w->styleSheet()));
        }
    }
}

void QFDApp::resizeGrips()
{
    if (Settings::ENABLE_CUSTOM_TITLE_BAR) {
        this->m_leftGrip->setGeometry(0, 10, 10, this->height());
        this->m_rightGrip->setGeometry(this->width() - 10, 10, 10, this->height());
        this->m_topGrip->setGeometry(0, 0, this->width(), 10);
        this->m_bottomGrip->setGeometry(0, this->height() - 10, this->width(), 10);
    }
}

void QFDApp::startBoxAnimation(int leftBoxWidth, int rightBoxWidth, const QString &direction)
{
    int rightWidth = 0;
    int leftWidth  = 0;

    // Check values
    if (leftBoxWidth == 0 && direction == "left") {
        leftWidth = 240;
    }

    if (rightBoxWidth == 0 && direction == "right") {
        rightWidth = 240;
    }

    // ANIMATION LEFT BOX
    QPropertyAnimation *leftBox = new QPropertyAnimation(ui->extraLeftBox, QByteArray("minimumWidth"));
    leftBox->setDuration(Settings::TIME_ANIMATION);
    leftBox->setStartValue(leftBoxWidth);
    leftBox->setEndValue(leftWidth);
    leftBox->setEasingCurve(QEasingCurve::InOutQuart);

    // ANIMATION RIGHT BOX
    QPropertyAnimation *rightBox = new QPropertyAnimation(ui->extraRightBox, QByteArray("minimumWidth"));
    rightBox->setDuration(Settings::TIME_ANIMATION);
    rightBox->setStartValue(rightBoxWidth);
    rightBox->setEndValue(rightWidth);
    rightBox->setEasingCurve(QEasingCurve::InOutQuart);

    // GROUP ANIMATION
    QParallelAnimationGroup *group = new QParallelAnimationGroup(this);
    group->addAnimation(leftBox);
    group->addAnimation(rightBox);
    group->start(QAbstractAnimation::DeleteWhenStopped);
}

void QFDApp::mousePressEvent(QMouseEvent *event)
{
    // SET DRAG POS WINDOW
    this->dragPos = event->globalPos();

    // PRINT MOUSE EVENTS
    if (event->buttons() == Qt::LeftButton) {
        qDebug() << "Mouse click: LEFT CLICK";
    } else if (event->buttons() == Qt::RightButton) {
        qDebug() << "Mouse click: RIGHT CLICK";
    }
}

void QFDApp::resizeEvent(QResizeEvent *event)
{
    resizeGrips();
}

bool QFDApp::eventFilter(QObject *watched, QEvent *event)
{
    if (watched == ui->titleRightInfo) {
        if (event->type() == QEvent::MouseButtonDblClick) {
            QTimer::singleShot(250, this, &QFDApp::maximizeRestore);
            //            return true;
        }

        if (event->type() == QEvent::MouseMove) {
            QMouseEvent *moveEvent = static_cast<QMouseEvent *>(event);
            // IF MAXIMIZED CHANGE TO NORMAL
            if (returStatus()) {
                maximizeRestore();
            }
            // MOVE WINDOW
            if (moveEvent->buttons() == Qt::LeftButton) {
                this->move(this->pos() + moveEvent->globalPos() - this->dragPos);
                this->dragPos = moveEvent->globalPos();
                //                event->accept();
                //                return true;
            }
        }
    }

    return QMainWindow::eventFilter(watched, event);
}