#include "onlineuserswidget.h"
#include <QApplication>
#include <QDateTime>
#include <QDebug>
#include <QJsonDocument>
#include "network/networkaccessmanager.h"
#include "qglobal.h"

#include <qtpromise/qpromise.h>
#include <qtpromise/qpromisefuture.h>
#include <qtpromise/qpromisehelpers.h>

OnlineUsersWidget::OnlineUsersWidget(QWidget *parent)
    : QWidget(parent)
    , m_mainLayout(nullptr)
    , m_headerLayout(nullptr)
    , m_titleLabel(nullptr)
    , m_countLabel(nullptr)
    , m_refreshButton(nullptr)
    , m_searchEdit(nullptr)
    , m_usersTable(nullptr)
    , m_emptyStateLabel(nullptr)
    , m_contextMenu(nullptr)
    , m_privateMessageAction(nullptr)
    , m_viewProfileAction(nullptr)
    , m_kickUserAction(nullptr)
    , m_totalCount(0)
{
    // 初始化统计数据
    for (int i = 0; i < 7; ++i) {
        m_globalStats[i] = 0;
    }
    
    setupUI();
    setupTable();
    setupContextMenu();
    applyStyles();

    // 添加一些示例数据
    addUser(OnlineUser("1", "管理员", "在线"));
    addUser(OnlineUser("2", "用户A", "在线"));
    addUser(OnlineUser("3", "用户B", "离开"));
    addUser(OnlineUser("4", "用户C", "忙碌"));
}

OnlineUsersWidget::~OnlineUsersWidget() {}

void OnlineUsersWidget::setupUI()
{
    m_mainLayout = new QVBoxLayout(this);
    m_mainLayout->setContentsMargins(8, 8, 8, 8);
    m_mainLayout->setSpacing(6);

    // 头部布局
    m_headerLayout = new QHBoxLayout();

    m_titleLabel = new QLabel("在线用户", this);
    m_titleLabel->setObjectName("titleLabel");

    m_countLabel = new QLabel("(0)", this);
    m_countLabel->setObjectName("countLabel");

    m_refreshButton = new QPushButton("刷新", this);
    m_refreshButton->setObjectName("refreshButton");
    m_refreshButton->setMaximumWidth(60);

    m_headerLayout->addWidget(m_titleLabel);
    m_headerLayout->addWidget(m_countLabel);
    m_headerLayout->addStretch();
    m_headerLayout->addWidget(m_refreshButton);

    // 搜索框
    m_searchEdit = new QLineEdit(this);
    m_searchEdit->setPlaceholderText("搜索用户...");
    m_searchEdit->setObjectName("searchEdit");

    // 用户表格
    m_usersTable = new QTableWidget(this);
    m_usersTable->setObjectName("usersTable");

    // 空状态提示标签
    m_emptyStateLabel = new QLabel(this);
    m_emptyStateLabel->setObjectName("emptyStateLabel");
    m_emptyStateLabel->setText("请选择一个房间查看在线用户");
    m_emptyStateLabel->setAlignment(Qt::AlignCenter);
    m_emptyStateLabel->setWordWrap(true);
    m_emptyStateLabel->hide(); // 默认隐藏

    // 添加到主布局
    m_mainLayout->addLayout(m_headerLayout);
    m_mainLayout->addWidget(m_searchEdit);
    m_mainLayout->addWidget(m_usersTable);
    m_mainLayout->addWidget(m_emptyStateLabel);

    // 连接信号
    connect(m_refreshButton, &QPushButton::clicked, this, &OnlineUsersWidget::onRefreshClicked);
    connect(m_searchEdit, &QLineEdit::textChanged, this, &OnlineUsersWidget::onSearchTextChanged);
}

void OnlineUsersWidget::setupTable()
{
    // 设置表格列 - 原有3列 + 新增7列 (0-6)
    m_usersTable->setColumnCount(10);
    QStringList headers;
    headers << "状态" << "用户名" << "最后活动" << "0" << "1" << "2" << "3" << "4" << "5" << "6";
    m_usersTable->setHorizontalHeaderLabels(headers);

    // 设置表格属性
    m_usersTable->setSelectionBehavior(QAbstractItemView::SelectRows);
    m_usersTable->setSelectionMode(QAbstractItemView::SingleSelection);
    m_usersTable->setAlternatingRowColors(true);
    m_usersTable->setShowGrid(false);
    m_usersTable->verticalHeader()->setVisible(false);

    // 设置列宽
    QHeaderView *header = m_usersTable->horizontalHeader();
    header->setStretchLastSection(false);
    header->resizeSection(0, 60);  // 状态列
    header->resizeSection(1, 120); // 用户名列
    header->resizeSection(2, 80);  // 最后活动列
    // 设置新增的0-6列宽度
    for (int i = 3; i < 10; ++i) {
        header->resizeSection(i, 40);
    }

    // 连接信号
    connect(m_usersTable, &QTableWidget::itemDoubleClicked, [this](QTableWidgetItem *item) {
        if (item) {
            onTableDoubleClicked(item->row(), item->column());
        }
    });

    m_usersTable->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(m_usersTable,
            &QTableWidget::customContextMenuRequested,
            this,
            &OnlineUsersWidget::onTableContextMenu);
}

void OnlineUsersWidget::setupContextMenu()
{
    m_contextMenu = new QMenu(this);

    m_privateMessageAction = new QAction("发送私信", this);
    m_viewProfileAction = new QAction("查看资料", this);
    m_kickUserAction = new QAction("踢出用户", this);

    m_contextMenu->addAction(m_privateMessageAction);
    m_contextMenu->addAction(m_viewProfileAction);
    m_contextMenu->addSeparator();
    m_contextMenu->addAction(m_kickUserAction);

    // 连接信号
    connect(m_privateMessageAction, &QAction::triggered, [this]() {
        if (!m_selectedUserId.isEmpty()) {
            emit privateMessageRequested(m_selectedUserId, m_selectedUsername);
        }
    });

    connect(m_viewProfileAction, &QAction::triggered, [this]() {
        if (!m_selectedUserId.isEmpty()) {
            emit userProfileRequested(m_selectedUserId, m_selectedUsername);
        }
    });

    connect(m_kickUserAction, &QAction::triggered, [this]() {
        // TODO: 实现踢出用户功能
        qDebug() << "踢出用户:" << m_selectedUsername;
    });
}

void OnlineUsersWidget::applyStyles()
{
    // setStyleSheet("#titleLabel {"
    //               "    font-size: 14px;"
    //               "    font-weight: bold;"
    //               "    color: #2c3e50;"
    //               "}"

    //               "#countLabel {"
    //               "    font-size: 12px;"
    //               "    color: #7f8c8d;"
    //               "    margin-left: 5px;"
    //               "}"

    //               "#searchEdit {"
    //               "    padding: 6px;"
    //               "    border: 1px solid #bdc3c7;"
    //               "    border-radius: 3px;"
    //               "    font-size: 12px;"
    //               "}"

    //               "#usersTable {"
    //               "    border: 1px solid #bdc3c7;"
    //               "    border-radius: 3px;"
    //               "    background-color: white;"
    //               "    gridline-color: #ecf0f1;"
    //               "}"

    //               "#usersTable::item {"
    //               "    padding: 8px;"
    //               "    border-bottom: 1px solid #ecf0f1;"
    //               "}"

    //               "#usersTable::item:selected {"
    //               "    background-color: #3498db;"
    //               "    color: white;"
    //               "}"

    //               "#usersTable::item:hover {"
    //               "    background-color: #ecf0f1;"
    //               "}"

    //               "#emptyStateLabel {"
    //               "    font-size: 14px;"
    //               "    color: #7f8c8d;"
    //               "    padding: 40px 20px;"
    //               "    background-color: #f8f9fa;"
    //               "    border: 1px solid #e9ecef;"
    //               "    border-radius: 6px;"
    //               "    margin: 20px 0;"
    //               "}");
}

void OnlineUsersWidget::addUser(const OnlineUser &user)
{
    // 检查用户是否已存在
    int existingRow = findUserRow(user.userId);
    if (existingRow >= 0) {
        // 更新现有用户
        m_users[existingRow] = user;
        updateTableRow(existingRow, user);
        return;
    }

    // 添加新用户
    m_users.append(user);

    // 如果当前有过滤条件，检查是否匹配
    if (!m_currentFilter.isEmpty()) {
        if (!user.username.contains(m_currentFilter, Qt::CaseInsensitive)) {
            updateUserCountLabel();
            return;
        }
    }

    // 添加到表格
    int row = m_usersTable->rowCount();
    m_usersTable->insertRow(row);
    updateTableRow(row, user);

    updateUserCountLabel();
    
    // 确保表格可见（隐藏空状态）
    if (m_emptyStateLabel->isVisible()) {
        m_emptyStateLabel->hide();
        m_usersTable->show();
    }
}

void OnlineUsersWidget::removeUser(const QString &userId)
{
    int row = findUserRow(userId);
    if (row >= 0) {
        m_users.removeAt(row);
        m_usersTable->removeRow(row);
        updateUserCountLabel();
    }
}

void OnlineUsersWidget::updateUserStatus(const QString &userId, const QString &status)
{
    int userIndex = -1;
    for (int i = 0; i < m_users.size(); ++i) {
        if (m_users[i].userId == userId) {
            userIndex = i;
            break;
        }
    }

    if (userIndex >= 0) {
        m_users[userIndex].status = status;
        m_users[userIndex].lastSeen = QDateTime::currentDateTime();

        // 更新表格中对应的行
        int row = findUserRow(userId);
        if (row >= 0) {
            updateTableRow(row, m_users[userIndex]);
        }
    }
}

void OnlineUsersWidget::updateUserList(const QJsonArray &users)
{
    clearUsers();

    for (const auto &value : users) {
        if (value.isObject()) {
            QJsonObject userObj = value.toObject();
            OnlineUser user;
            user.userId = userObj["id"].toString();
            user.username = userObj["username"].toString();
            user.status = userObj["status"].toString("在线");
            user.isAdmin = userObj["isAdmin"].toBool(false);

            if (userObj.contains("lastSeen")) {
                user.lastSeen = QDateTime::fromString(userObj["lastSeen"].toString(), Qt::ISODate);
            } else {
                user.lastSeen = QDateTime::currentDateTime();
            }

            addUser(user);
        }
    }
}

void OnlineUsersWidget::clearUsers()
{
    m_users.clear();
    m_usersTable->setRowCount(0);
    updateUserCountLabel();
}

QList<OnlineUser> OnlineUsersWidget::getAllUsers() const
{
    return m_users;
}

OnlineUser OnlineUsersWidget::getUser(const QString &userId) const
{
    for (const auto &user : m_users) {
        if (user.userId == userId) {
            return user;
        }
    }
    return OnlineUser();
}

int OnlineUsersWidget::getUserCount() const
{
    return m_users.size();
}

void OnlineUsersWidget::setSearchVisible(bool visible)
{
    m_searchEdit->setVisible(visible);
}

void OnlineUsersWidget::filterUsers(const QString &keyword)
{
    m_currentFilter = keyword;

    // 清空表格
    m_usersTable->setRowCount(0);

    // 重新添加匹配的用户
    for (const auto &user : m_users) {
        if (keyword.isEmpty() || user.username.contains(keyword, Qt::CaseInsensitive)) {
            int row = m_usersTable->rowCount();
            m_usersTable->insertRow(row);
            updateTableRow(row, user);
        }
    }

    updateUserCountLabel();
}

void OnlineUsersWidget::onTableDoubleClicked(int row, int column)
{
    Q_UNUSED(column);

    if (row >= 0 && row < m_usersTable->rowCount()) {
        QTableWidgetItem *userItem = m_usersTable->item(row, 1); // 用户名列
        if (userItem) {
            QString username = userItem->text();
            // 从用户列表中找到对应的userId
            for (const auto &user : m_users) {
                if (user.username == username) {
                    emit userDoubleClicked(user.userId, username);
                    break;
                }
            }
        }
    }
}

void OnlineUsersWidget::onTableContextMenu(const QPoint &position)
{
    QTableWidgetItem *item = m_usersTable->itemAt(position);
    if (!item)
        return;

    int row = item->row();
    QTableWidgetItem *userItem = m_usersTable->item(row, 1);
    if (!userItem)
        return;

    QString username = userItem->text();
    // 从用户列表中找到对应的userId
    for (const auto &user : m_users) {
        if (user.username == username) {
            m_selectedUserId = user.userId;
            m_selectedUsername = username;

            // 根据用户权限显示/隐藏菜单项
            m_kickUserAction->setVisible(user.isAdmin); // 示例：只有管理员能踢人

            QPoint globalPos = m_usersTable->mapToGlobal(position);
            emit userRightClicked(user.userId, username, globalPos);
            m_contextMenu->exec(globalPos);
            break;
        }
    }
}

void OnlineUsersWidget::onSearchTextChanged(const QString &text)
{
    filterUsers(text);
}

void OnlineUsersWidget::onRefreshClicked()
{
    if (!m_currentRoomId.isEmpty()) {
        refreshRoomUsers();
    } else {
        // 当没有房间ID时，显示空状态提示
        clearUsers();
        updateEmptyState();
        qDebug() << "没有选择房间，显示空状态提示";
    }
}

void OnlineUsersWidget::updateUserCountLabel()
{
    int totalUsers = m_users.size();
    int displayedUsers = m_usersTable->rowCount();

    if (m_currentFilter.isEmpty()) {
        m_countLabel->setText(QString("(%1)").arg(totalUsers));
    } else {
        m_countLabel->setText(QString("(%1/%2)").arg(displayedUsers).arg(totalUsers));
    }
}

void OnlineUsersWidget::updateTableRow(int row, const OnlineUser &user)
{
    // 状态列
    QTableWidgetItem *statusItem = new QTableWidgetItem(getStatusIcon(user.status) + " "
                                                        + user.status);
    statusItem->setFlags(statusItem->flags() & ~Qt::ItemIsEditable);
    m_usersTable->setItem(row, 0, statusItem);

    // 用户名列
    QTableWidgetItem *nameItem = new QTableWidgetItem(user.username);
    nameItem->setFlags(nameItem->flags() & ~Qt::ItemIsEditable);
    if (user.isAdmin) {
        nameItem->setText(user.username + " (管理员)");
        nameItem->setForeground(QColor("#e74c3c"));
    }
    m_usersTable->setItem(row, 1, nameItem);

    // 最后活动时间列
    QString timeText = user.lastSeen.toString("hh:mm");
    QTableWidgetItem *timeItem = new QTableWidgetItem(timeText);
    timeItem->setFlags(timeItem->flags() & ~Qt::ItemIsEditable);
    m_usersTable->setItem(row, 2, timeItem);

    // 添加0-6列的统计数据
    for (int i = 0; i < 7; ++i) {
        QTableWidgetItem *statsItem = new QTableWidgetItem(QString::number(user.messageStats[i]));
        statsItem->setFlags(statsItem->flags() & ~Qt::ItemIsEditable);
        statsItem->setTextAlignment(Qt::AlignCenter);
        m_usersTable->setItem(row, i + 3, statsItem);
    }
}

int OnlineUsersWidget::findUserRow(const QString &userId) const
{
    for (int i = 0; i < m_users.size(); ++i) {
        if (m_users[i].userId == userId) {
            // 在表格中查找对应行
            for (int row = 0; row < m_usersTable->rowCount(); ++row) {
                QTableWidgetItem *nameItem = m_usersTable->item(row, 1);
                if (nameItem && nameItem->text().contains(m_users[i].username)) {
                    return row;
                }
            }
            break;
        }
    }
    return -1;
}

QString OnlineUsersWidget::getStatusIcon(const QString &status) const
{
    if (status == "在线") {
        return "🟢";
    } else if (status == "离开") {
        return "🟡";
    } else if (status == "忙碌") {
        return "🔴";
    } else {
        return "⚪";
    }
}

void OnlineUsersWidget::updateEmptyState()
{
    // 根据当前状态显示相应的空状态提示
    if (m_currentRoomId.isEmpty()) {
        m_emptyStateLabel->setText("请选择一个房间查看在线用户");
        m_emptyStateLabel->show();
        m_usersTable->hide();
    } else {
        m_emptyStateLabel->hide();
        m_usersTable->show();
    }
}

void OnlineUsersWidget::updateUserListFromRoomUsers(const QList<RoomUserInfo> &roomUsers)
{
    // 保存现有用户的统计数据
    QHash<QString, OnlineUser> existingUsers;
    for (const auto &user : m_users) {
        existingUsers[user.userId] = user;
    }
    
    clearUsers();

    for (const auto &roomUser : roomUsers) {
        OnlineUser user;
        user.userId = roomUser.userId;
        user.username = roomUser.userName;
        user.status = "在线"; // 房间用户默认为在线状态
        user.lastSeen = QDateTime::currentDateTime();
        user.isAdmin = false; // 可以根据需要设置管理员状态

        // 如果用户之前存在，恢复其统计数据
        if (existingUsers.contains(user.userId)) {
            const OnlineUser &existingUser = existingUsers[user.userId];
            for (int i = 0; i < 7; ++i) {
                user.messageStats[i] = existingUser.messageStats[i];
            }
            user.isAdmin = existingUser.isAdmin; // 保持管理员状态
        }

        addUser(user);
    }
}

void OnlineUsersWidget::setCurrentRoomId(const QString &roomId)
{
    m_currentRoomId = roomId;
    if (!roomId.isEmpty()) {
        refreshRoomUsers();
    } else {
        // 当房间ID为空时，显示空状态
        clearUsers();
        updateEmptyState();
    }
}

void OnlineUsersWidget::refreshRoomUsers()
{
    if (m_currentRoomId.isEmpty()) {
        qDebug() << "房间ID为空，无法刷新用户列表";
        return;
    }

    qDebug() << "刷新房间用户列表，房间ID:" << m_currentRoomId;

    // 调用API获取房间用户列表
    QFuture<HttpResponse> future = getRoomUsersApi(m_currentRoomId);

    // 使用QtPromise处理异步响应
    QtPromise::QPromise<HttpResponse> roomUsersPromise = QtPromise::resolve(future);

    roomUsersPromise
        .then([this](const HttpResponse &response) {
            qDebug() << response.rawData;
            if (response.code == 0) {
                // 解析响应数据

                qDebug() << "response.data" << response.data;
                if (response.data.isArray()) {
                    QJsonArray userArray = response.data.toArray();
                    
                    // 直接从数组解析用户数据
                    QList<RoomUserInfo> roomUsers;
                    for (const QJsonValue &value : userArray) {
                        if (value.isObject()) {
                            QJsonObject userObj = value.toObject();
                            RoomUserInfo userInfo;
                            userInfo.userId = userObj["userId"].toString();
                            userInfo.userName = userObj["userName"].toString();
                            userInfo.clientId = userObj["clientId"].toString();
                            roomUsers.append(userInfo);
                        }
                    }

                    // 更新用户列表
                    updateUserListFromRoomUsers(roomUsers);

                    qDebug() << "成功获取房间用户列表，用户数量:" << roomUsers.size();
                }
            } else {
                qDebug() << "获取房间用户列表失败:" << response.message;
            }
        })
        .fail([](const std::exception &e) { qDebug() << "获取房间用户列表异常:" << e.what(); });
}

void OnlineUsersWidget::onUserListUpdate(const QString &roomId, const QJsonArray &userList)
{
    // 检查是否是当前房间的用户列表更新
    if (roomId != m_currentRoomId) {
        return;
    }

    qDebug() << "收到房间用户列表更新消息，房间ID:" << roomId << "用户数量:" << userList.size();

    // 将QJsonArray转换为RoomUserInfo列表
    QList<RoomUserInfo> roomUsers;
    for (const QJsonValue &value : userList) {
        if (value.isObject()) {
            QJsonObject userObj = value.toObject();
            RoomUserInfo userInfo;
            userInfo.userId = userObj["userId"].toString();
            userInfo.userName = userObj["userName"].toString();
            userInfo.clientId = userObj["clientId"].toString();
            roomUsers.append(userInfo);
        }
    }

    // 更新用户列表显示
    updateUserListFromRoomUsers(roomUsers);
}

// 统计功能方法 (从 StatsWidget 迁移)
void OnlineUsersWidget::updateStats(const QJsonObject& statsData)
{
    qDebug() << "[OnlineUsersWidget] 收到统计更新:" << statsData;
    
    // 解析data数组并更新用户统计数据
    if (statsData.contains("data") && statsData["data"].isArray()) {
        QJsonArray dataArray = statsData["data"].toArray();
        
        // 重置全局累计数据
        m_totalCount = 0;
        for (int i = 0; i < 7; ++i) {
            m_globalStats[i] = 0;
        }
        QDateTime latestUpdate;
        
        // 遍历所有用户数据进行更新
        for (const QJsonValue& value : dataArray) {
            if (value.isObject()) {
                QJsonObject userStats = value.toObject();
                QString userId = userStats["userId"].toString();
                
                // 更新单个用户的统计数据
                updateUserStats(userId, userStats);
                
                // 累加到全局统计
                m_totalCount += userStats["totalCount"].toInt();
                for (int i = 0; i < 7; ++i) {
                    QString typeKey = QString("type%1Count").arg(i);
                    m_globalStats[i] += userStats[typeKey].toInt();
                }
                
                // 找到最新的更新时间
                QString lastUpdateStr = userStats["lastUpdate"].toString();
                QDateTime userUpdate = QDateTime::fromString(lastUpdateStr, Qt::ISODate);
                if (userUpdate.isValid() && (!latestUpdate.isValid() || userUpdate > latestUpdate)) {
                    latestUpdate = userUpdate;
                }
            }
        }
        
        m_lastStatsUpdate = latestUpdate;
        
        qDebug() << "[OnlineUsersWidget] 全局统计信息已更新 - 总数:" << m_totalCount 
                 << "类型0-6:" << m_globalStats[0] << m_globalStats[1] << m_globalStats[2] 
                 << m_globalStats[3] << m_globalStats[4] << m_globalStats[5] << m_globalStats[6]
                 << "用户数:" << dataArray.size();
    }
}

void OnlineUsersWidget::updateUserStats(const QString &userId, const QJsonObject& userStats)
{
    // 查找用户
    int userIndex = -1;
    for (int i = 0; i < m_users.size(); ++i) {
        if (m_users[i].userId == userId) {
            userIndex = i;
            break;
        }
    }
    
    if (userIndex >= 0) {
        // 更新用户的统计数据
        for (int i = 0; i < 7; ++i) {
            QString typeKey = QString("type%1Count").arg(i);
            m_users[userIndex].messageStats[i] = userStats[typeKey].toInt();
        }
        
        // 更新表格显示
        int row = findUserRow(userId);
        if (row >= 0) {
            updateTableRow(row, m_users[userIndex]);
        }
        
        qDebug() << "[OnlineUsersWidget] 用户统计已更新:" << userId 
                 << "统计数据:" << m_users[userIndex].messageStats[0] 
                 << m_users[userIndex].messageStats[1] << m_users[userIndex].messageStats[2]
                 << m_users[userIndex].messageStats[3] << m_users[userIndex].messageStats[4]
                 << m_users[userIndex].messageStats[5] << m_users[userIndex].messageStats[6];
    } else {
        qDebug() << "[OnlineUsersWidget] 未找到用户:" << userId;
    }
}