#include "userlist.h"
#include "tab_userlists.h"
#include "tab_supervisor.h"
#include "abstractclient.h"
#include "pixmapgenerator.h"
#include "userinfobox.h"
#include "user_context_menu.h"
#include "gameselector.h"
#include <QHeaderView>
#include <QVBoxLayout>
#include <QMouseEvent>
#include <QMenu>
#include <QInputDialog>
#include <QLabel>
#include <QSpinBox>
#include <QRadioButton>
#include <QPlainTextEdit>
#include <QPushButton>
#include <QHBoxLayout>
#include <QCheckBox>
#include <QMessageBox>

#include "pending_command.h"
#include "pb/session_commands.pb.h"
#include "pb/moderator_commands.pb.h"
#include "pb/response_get_games_of_user.pb.h"
#include "pb/response_get_user_info.pb.h"

BanDialog::BanDialog(const ServerInfo_User &info, QWidget *parent)
    : QDialog(parent)
{
    setAttribute(Qt::WA_DeleteOnClose);
    
    nameBanCheckBox = new QCheckBox(tr("ban &user name"));
    nameBanCheckBox->setChecked(true);
    nameBanEdit = new QLineEdit(QString::fromStdString(info.name()));
    ipBanCheckBox = new QCheckBox(tr("ban &IP address"));
    ipBanCheckBox->setChecked(true);
    ipBanEdit = new QLineEdit(QString::fromStdString(info.address()));
    QGridLayout *banTypeGrid = new QGridLayout;
    banTypeGrid->addWidget(nameBanCheckBox, 0, 0);
    banTypeGrid->addWidget(nameBanEdit, 0, 1);
    banTypeGrid->addWidget(ipBanCheckBox, 1, 0);
    banTypeGrid->addWidget(ipBanEdit, 1, 1);
    QGroupBox *banTypeGroupBox = new QGroupBox(tr("Ban type"));
    banTypeGroupBox->setLayout(banTypeGrid);
    
    permanentRadio = new QRadioButton(tr("&permanent ban"));
    temporaryRadio = new QRadioButton(tr("&temporary ban"));
    temporaryRadio->setChecked(true);
    connect(temporaryRadio, SIGNAL(toggled(bool)), this, SLOT(enableTemporaryEdits(bool)));
    daysLabel = new QLabel(tr("&Days:"));
    daysEdit = new QSpinBox;
    daysEdit->setMinimum(0);
    daysEdit->setValue(0);
    daysEdit->setMaximum(10000);
    daysLabel->setBuddy(daysEdit);
    hoursLabel = new QLabel(tr("&Hours:"));
    hoursEdit = new QSpinBox;
    hoursEdit->setMinimum(0);
    hoursEdit->setValue(0);
    hoursEdit->setMaximum(24);
    hoursLabel->setBuddy(hoursEdit);
    minutesLabel = new QLabel(tr("&Minutes:"));
    minutesEdit = new QSpinBox;
    minutesEdit->setMinimum(0);
    minutesEdit->setValue(5);
    minutesEdit->setMaximum(60);
    minutesLabel->setBuddy(minutesEdit);
    QGridLayout *durationLayout = new QGridLayout;
    durationLayout->addWidget(permanentRadio, 0, 0, 1, 6);
    durationLayout->addWidget(temporaryRadio, 1, 0, 1, 6);
    durationLayout->addWidget(daysLabel, 2, 0);
    durationLayout->addWidget(daysEdit, 2, 1);
    durationLayout->addWidget(hoursLabel, 2, 2);
    durationLayout->addWidget(hoursEdit, 2, 3);
    durationLayout->addWidget(minutesLabel, 2, 4);
    durationLayout->addWidget(minutesEdit, 2, 5);
    QGroupBox *durationGroupBox = new QGroupBox(tr("Duration of the ban"));
    durationGroupBox->setLayout(durationLayout);
    
    QLabel *reasonLabel = new QLabel(tr("Please enter the reason for the ban.\nThis is only saved for moderators and cannot be seen by the banned person."));
    reasonEdit = new QPlainTextEdit;
    
    QLabel *visibleReasonLabel = new QLabel(tr("Please enter the reason for the ban that will be visible to the banned person."));
    visibleReasonEdit = new QPlainTextEdit;
    
    QPushButton *okButton = new QPushButton(tr("&OK"));
    okButton->setAutoDefault(true);
    connect(okButton, SIGNAL(clicked()), this, SLOT(okClicked()));
    QPushButton *cancelButton = new QPushButton(tr("&Cancel"));
    connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
    
    QHBoxLayout *buttonLayout = new QHBoxLayout;
    buttonLayout->addStretch();
    buttonLayout->addWidget(okButton);
    buttonLayout->addWidget(cancelButton);
    
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(banTypeGroupBox);
    vbox->addWidget(durationGroupBox);
    vbox->addWidget(reasonLabel);
    vbox->addWidget(reasonEdit);
    vbox->addWidget(visibleReasonLabel);
    vbox->addWidget(visibleReasonEdit);
    vbox->addLayout(buttonLayout);
    
    setLayout(vbox);
    setWindowTitle(tr("Ban user from server"));
}

void BanDialog::okClicked()
{
    if (!nameBanCheckBox->isChecked() && !ipBanCheckBox->isChecked()) {
        QMessageBox::critical(this, tr("Error"), tr("You have to select a name-based or IP-based ban, or both."));
        return;
    }
    accept();
}

void BanDialog::enableTemporaryEdits(bool enabled)
{
    daysLabel->setEnabled(enabled);
    daysEdit->setEnabled(enabled);
    hoursLabel->setEnabled(enabled);
    hoursEdit->setEnabled(enabled);
    minutesLabel->setEnabled(enabled);
    minutesEdit->setEnabled(enabled);
}

QString BanDialog::getBanName() const
{
    return nameBanCheckBox->isChecked() ? nameBanEdit->text() : QString();
}

QString BanDialog::getBanIP() const
{
    return ipBanCheckBox->isChecked() ? ipBanEdit->text() : QString();
}

int BanDialog::getMinutes() const
{
    return permanentRadio->isChecked() ? 0 : (daysEdit->value() * 24 * 60 + hoursEdit->value() * 60 + minutesEdit->value());
}

QString BanDialog::getReason() const
{
    return reasonEdit->toPlainText();
}

QString BanDialog::getVisibleReason() const
{
    return visibleReasonEdit->toPlainText();
}

UserListItemDelegate::UserListItemDelegate(QObject *const parent)
    : QStyledItemDelegate(parent)
{
}

bool UserListItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    if ((event->type() == QEvent::MouseButtonPress) && index.isValid()) {
        QMouseEvent *const mouseEvent = static_cast<QMouseEvent *>(event);
        if (mouseEvent->button() == Qt::RightButton) {
            static_cast<UserList *>(parent())->showContextMenu(mouseEvent->globalPos(), index);
            return true;
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index);
}

UserListTWI::UserListTWI(const ServerInfo_User &_userInfo)
    : QTreeWidgetItem(Type)
{
    setUserInfo(_userInfo);
}

void UserListTWI::setUserInfo(const ServerInfo_User &_userInfo)
{
    userInfo = _userInfo;

    setData(0, Qt::UserRole, userInfo.user_level());
    setIcon(0, QIcon(UserLevelPixmapGenerator::generatePixmap(12, UserLevelFlags(userInfo.user_level()))));
    setIcon(1, QIcon(CountryPixmapGenerator::generatePixmap(12, QString::fromStdString(userInfo.country()))));
    setData(2, Qt::UserRole, QString::fromStdString(userInfo.name()));
    setData(2, Qt::DisplayRole, QString::fromStdString(userInfo.name()));
}

void UserListTWI::setOnline(bool online)
{
    setData(0, Qt::UserRole + 1, online);
    setData(2, Qt::ForegroundRole, online ? QBrush() : QBrush(Qt::gray));
}

bool UserListTWI::operator<(const QTreeWidgetItem &other) const
{
    // Sort by online/offline
    if (data(0, Qt::UserRole + 1) != other.data(0, Qt::UserRole + 1))
        return data(0, Qt::UserRole + 1).toBool();
    
    // Sort by user level
    if (data(0, Qt::UserRole) != other.data(0, Qt::UserRole))
        return data(0, Qt::UserRole).toInt() > other.data(0, Qt::UserRole).toInt();
    
    // Sort by name
    return QString::localeAwareCompare(data(2, Qt::UserRole).toString(), other.data(2, Qt::UserRole).toString()) < 0;
}

UserList::UserList(TabSupervisor *_tabSupervisor, AbstractClient *_client, UserListType _type, QWidget *parent)
    : QGroupBox(parent), tabSupervisor(_tabSupervisor), client(_client), type(_type), onlineCount(0)
{
    itemDelegate = new UserListItemDelegate(this);
    userContextMenu = new UserContextMenu(tabSupervisor, this);
    connect(userContextMenu, SIGNAL(openMessageDialog(QString, bool)), this, SIGNAL(openMessageDialog(QString, bool)));
    
    userTree = new QTreeWidget;
    userTree->setColumnCount(3);
#if QT_VERSION < 0x050000
    userTree->header()->setResizeMode(QHeaderView::ResizeToContents);
#else
    userTree->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
#endif
    userTree->setHeaderHidden(true);
    userTree->setRootIsDecorated(false);
    userTree->setIconSize(QSize(20, 12));
    userTree->setItemDelegate(itemDelegate);
    userTree->setAlternatingRowColors(true);
    connect(userTree, SIGNAL(itemActivated(QTreeWidgetItem *, int)), this, SLOT(userClicked(QTreeWidgetItem *, int)));
    
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(userTree);
    
    setLayout(vbox);
    
    retranslateUi();
}

void UserList::retranslateUi()
{
    userContextMenu->retranslateUi();
    switch (type) {
        case AllUsersList: titleStr = tr("Users online: %1"); break;
        case RoomList: titleStr = tr("Users in this room: %1"); break;
        case BuddyList: titleStr = tr("Buddies online: %1 / %2"); break;
        case IgnoreList: titleStr = tr("Ignored users online: %1 / %2"); break;
    }
    updateCount();
}

void UserList::processUserInfo(const ServerInfo_User &user, bool online)
{
    const QString userName = QString::fromStdString(user.name());
    UserListTWI *item = users.value(userName);
    if (item)
        item->setUserInfo(user);
    else {
        item = new UserListTWI(user);
        users.insert(userName, item);
        userTree->addTopLevelItem(item);
        if (online)
            ++onlineCount;
        updateCount();
    }
    item->setOnline(online);
}

bool UserList::deleteUser(const QString &userName)
{
    UserListTWI *twi = users.value(userName);
    if (twi) {
        users.remove(userName);
        userTree->takeTopLevelItem(userTree->indexOfTopLevelItem(twi));
        if (twi->data(0, Qt::UserRole + 1).toBool())
            --onlineCount;
        delete twi;
        updateCount();
        return true;
    }
    
    return false;
}

void UserList::setUserOnline(const QString &userName, bool online)
{
    UserListTWI *twi = users.value(userName);
    if (!twi)
        return;
    
    twi->setOnline(online);
    if (online)
        ++onlineCount;
    else
        --onlineCount;
    updateCount();
}

void UserList::updateCount()
{
    QString str = titleStr;
    if ((type == BuddyList) || (type == IgnoreList))
        str = str.arg(onlineCount);
    setTitle(str.arg(userTree->topLevelItemCount()));
}

void UserList::userClicked(QTreeWidgetItem *item, int /*column*/)
{
    emit openMessageDialog(item->data(2, Qt::UserRole).toString(), true);
}

void UserList::showContextMenu(const QPoint &pos, const QModelIndex &index)
{
    const ServerInfo_User &userInfo = static_cast<UserListTWI *>(userTree->topLevelItem(index.row()))->getUserInfo();
    
    userContextMenu->showContextMenu(pos, QString::fromStdString(userInfo.name()), UserLevelFlags(userInfo.user_level()));
}

void UserList::sortItems()
{
    userTree->sortItems(1, Qt::AscendingOrder);
}