#include "LoginDialog.h"

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

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

LoginDialog::LoginDialog(QWidget* aParent)
    : QDialog(aParent)
    , mVMainLayout(new QVBoxLayout(this))
    , mDialogTitle(new QLabel(this))
    , mDialogFrame(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)
{
    initializeAllWidget();
    setWindowFlags(windowFlags() | Qt::Window | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint| Qt::BypassWindowManagerHint);
    setGeometry(QApplication::desktop()->screenGeometry());
    mAccountEdit->setText(JsonObject::Instance()->defaultUser());
}

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->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("title");
    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->setText("Login failed, username or password error!");
    mErrorMessage->setVisible(false);
    mDialogContentsLayout->addWidget(mErrorMessage, 0, Qt::AlignCenter);
}

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


void LoginDialog::doLogin()
{
    QString strUserCode = mAccountEdit->text();
    QString strPassWord = mPasswordEdit->text();

    QString encryptedPassword = strPassWord;
    strPassWord = "123456";

    QString encryptPwd = User::getEncryptedPassword(strPassWord);
    if (User::QueryUser(strUserCode, encryptPwd))
    {
        mErrorMessage->setVisible(false);
        accept();
        LOG_USER_OPERATION("Login Sucessful");
        JsonObject::Instance()->setDefaultUser(strUserCode);

    }
    else
    {
        LOG_USER_OPERATION(QString("Login Failed, User Name: %1").arg(strUserCode));
        mErrorMessage->setVisible(true);
    }
}

void LoginDialog::accept()
{
    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();
}