#include "LoginDialog.h"

#include <QVBoxLayout>
#include <QApplication>
#include <QDesktopWidget>
#include <QToolButton>
#include <QtWidgets/QLabel>
#include <QTimer>

#include "event/EventCenter.h"
#include "dialogs/DialogManager.h"
#include "models/User.h"
#include "log/UserOperationLog.h"
#include "json/jsonobject.h"
#include "components/ULineEdit.h"
#include "appvals/AppGlobalValues.h"
#include "db/SQLHelper.h"


namespace
{
    const int LOGIN_LOCK_COUNT = 3;
    const int LOGIN_LOCK_MINUTIES = 1;
}

LoginDialog::LoginDialog(QWidget* aParent)
    : QDialog(aParent)
    , mVMainLayout(new QVBoxLayout(this))
    , mDialogTitle(new QLabel(this))
    , mDialogFrame(new QFrame(this))
    , mHideFrame(new QFrame(this))
    , mTurnoffFrame(new QFrame(this))
    , mDialogContentsLayout(new QVBoxLayout(mDialogFrame))
    , mAccountEdit(new ULineEdit(mDialogFrame))
    , mPasswordEdit(new ULineEdit(mDialogFrame))
    , mLoginButton(nullptr)
    , mErrorMessage(new QLabel(this))
    , mIsRunning(false)
    , mHideClickCount(0)
    , mLoginFailedCount(0)
    , mLoginFailedTimer(new QTimer(this))
{
    initializeAllWidget();
    setWindowFlags(windowFlags() | Qt::Window | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint| Qt::BypassWindowManagerHint);
    setGeometry(QApplication::desktop()->screenGeometry());
    mAccountEdit->setText(JsonObject::Instance()->defaultUser());
    mLoginFailedTimer->setSingleShot(true);
    connect(mLoginFailedTimer, &QTimer::timeout, this, &LoginDialog::resetLoginFailedCount);
}

LoginDialog::~LoginDialog()
{
}

void LoginDialog::initializeAllWidget()
{
    this->setObjectName("loginForm");
    setFocusPolicy(Qt::ClickFocus);

    initializeTitle();
    initializeDialogFrame();
    initializeLayout();
    initializeEdit();
    initializeLoginButton();
    initializeErrorMessage();
}

void LoginDialog::initializeLayout()
{
    mVMainLayout->setContentsMargins(0, 0, 0, 0);
    mVMainLayout->setSpacing(0);
    mVMainLayout->addWidget(mHideFrame, 0, Qt::AlignLeft);
    QHBoxLayout * hLayout1 = new QHBoxLayout(mHideFrame);
    hLayout1->setDirection(QBoxLayout::RightToLeft);
    QToolButton * hideBtn = new QToolButton(mHideFrame);
    hideBtn->setObjectName("HideBtn");
    hLayout1->addWidget(hideBtn);
    connect(hideBtn, &QToolButton::clicked, [=]()
    {
        mHideClickCount++;
        if (mHideClickCount == 5){
            mHideClickCount = 0;
            DialogResult result = DialogManager::Default()->requestResetAdminPwd();
            if (result.ResultCode != QDialog::Accepted) return;
            DialogManager::Default()->requestAlertMessage(QString(tr("New password:%1")).arg(result.ResultData.toString()),
            DialogButtonMode::OkOnly,tr("Reset success"));
        }
    });
    mVMainLayout->addSpacerItem(new QSpacerItem(20, 20, QSizePolicy::Minimum, QSizePolicy::Expanding));
    mVMainLayout->addWidget(mDialogTitle, 0, Qt::AlignCenter);
    mVMainLayout->addWidget(mDialogFrame, 0, Qt::AlignCenter);
    mVMainLayout->addSpacerItem(new QSpacerItem(20, 20, QSizePolicy::Minimum, QSizePolicy::Expanding));
    mTurnoffFrame->setObjectName("TurnoffFrame");
    mVMainLayout->addWidget(mTurnoffFrame, 0, Qt::AlignRight);
    QHBoxLayout * hLayout = new QHBoxLayout(mTurnoffFrame);
    hLayout->setDirection(QBoxLayout::RightToLeft);
    QToolButton * turnOffBtn = new QToolButton(mTurnoffFrame);
    turnOffBtn->setObjectName("TurnoffBtn");
    hLayout->addWidget(turnOffBtn);
    connect(turnOffBtn, &QToolButton::clicked, []()
    {
        if(DialogManager::Default()->requestAlertMessage(QString(tr("Shut down now ?")), DialogButtonMode::OkAndCancel,tr("Shut Down")) == QDialog::Accepted)
        {
            LOG_USER_OPERATION("Shut Down")
            EventCenter::Default()->triggerEvent(GUIEvents::RequestShutdown, nullptr, nullptr);
        }
    });
    mDialogContentsLayout->setSpacing(30);
    mDialogContentsLayout->setContentsMargins(20, 60, 20, 20);
}

void LoginDialog::initializeTitle()
{
    mDialogTitle->setObjectName("loginTitle");
    mDialogTitle->setText(tr("U S C T"));
}

void LoginDialog::initializeDialogFrame()
{
    mDialogFrame->setObjectName("loginFrame");
}

void LoginDialog::initializeEdit()
{
    mAccountEdit->setObjectName("combobox_UserName");
    mAccountEdit->setPlaceholderText(tr("Username"));
    mAccountEdit->setFocusPolicy(Qt::ClickFocus);
    mDialogContentsLayout->addWidget(mAccountEdit);
    mPasswordEdit->setObjectName("edt_Password");
    mPasswordEdit->setEchoMode(QLineEdit::Password);
    mPasswordEdit->setPlaceholderText(tr("Password"));
    mPasswordEdit->setFocusPolicy(Qt::ClickFocus);
    mDialogContentsLayout->addWidget(mPasswordEdit);
}

void LoginDialog::initializeLoginButton()
{
    auto btnLogin = new QToolButton(this);
    btnLogin->setObjectName("btnlogin");
    mDialogContentsLayout->addWidget(btnLogin);
    btnLogin->setText(tr("Login"));
    mDialogContentsLayout->removeWidget(btnLogin);
    mDialogContentsLayout->addWidget(btnLogin, 0, Qt::AlignCenter);
    mLoginButton = btnLogin;
    connect(mLoginButton, SIGNAL(clicked()), this, SLOT(doLogin()));
}

void LoginDialog::initializeErrorMessage()
{
    mErrorMessage->setObjectName("warn");
    mErrorMessage->setVisible(false);
    mDialogContentsLayout->addWidget(mErrorMessage, 0, Qt::AlignCenter);
}

void LoginDialog::clearInputData()
{
    mAccountEdit->clear();
    mPasswordEdit->clear();
}


void LoginDialog::doLogin()
{
    if (!(AppGlobalValues::DBconnected().toBool())){
        bool sqlConnected= SQLHelper::Open();
        if (sqlConnected)
        {
            AppGlobalValues::setDBconnected(true);
        }
        else{
            mErrorMessage->setText(QString(tr("Can't connect db. Please reboot the device and retry, or call for the service help.")).arg(LOGIN_LOCK_MINUTIES));
            mErrorMessage->setVisible(true);
            return;
        }
    }
    if(mLoginFailedCount >= LOGIN_LOCK_COUNT)
    {
        mErrorMessage->setText(QString(tr("Login locked. Please retry after %1 minutes.")).arg(LOGIN_LOCK_MINUTIES));
        mErrorMessage->setVisible(true);
        return;
    }

    QString strUserCode = mAccountEdit->text();
    QString strPassWord = mPasswordEdit->text();

    QString encryptedPassword = strPassWord;
    // strPassWord = "123456";

    QString encryptPwd = User::getEncryptedPassword(strPassWord);
    if (User::QueryUser(strUserCode, encryptPwd))
    {
        resetLoginFailedCount();
        mErrorMessage->setVisible(false);
        EventCenter::Default()->triggerEvent(GUIEvents::LoginSuccess,nullptr,nullptr);
        accept();
        LOG_USER_OPERATION("Login Sucessful");
        JsonObject::Instance()->setDefaultUser(strUserCode);
        mHideClickCount = 0;
    }
    else
    {
        LOG_USER_OPERATION(QString("Login Failed, User Name: %1").arg(strUserCode));
        ++mLoginFailedCount;
        mErrorMessage->setText(QString(tr("Login failed, username or password error! Remaining retries: %1")).arg(LOGIN_LOCK_COUNT - mLoginFailedCount));
        mErrorMessage->setVisible(true);
        if(LOGIN_LOCK_COUNT - mLoginFailedCount == 0)
        {
            mLoginFailedTimer->start(LOGIN_LOCK_MINUTIES * 60000);
        }
    }
}

void LoginDialog::accept()
{
    if (JsonObject::Instance()->getAnonymousMode()){
        DialogManager::Default()->requestAlertMessage(tr("Anonymous Mode active!"),
        DialogButtonMode::OkOnly,tr("System mode Notice"));
    }
    QDialog::accept();
    clearInputData();
    mIsRunning = false;
}

int LoginDialog::exec()
{
    mIsRunning = true;
    return QDialog::exec();
}

bool LoginDialog::isRunning()
{
    return mIsRunning;
}

void LoginDialog::showEvent(QShowEvent* event)
{
    QDialog::showEvent(event);
    emit loginDialogShown();
}

void LoginDialog::resetLoginFailedCount()
{
    mLoginFailedCount = 0;
}