// SPDX-FileCopyrightText: 2022 Tobias Fella <tobias.fella@kde.org>
// SPDX-License-Identifier: LGPL-2.0-or-later

#include "completionmodel.h"
#include <QDebug>

// #include "actionsmodel.h"
// #include "completionproxymodel.h"
// #include "customemojimodel.h"
// #include "emojimodel.h"
#include "neochatroom.h"
// #include "roommanager.h"
// #include "userlistmodel.h"

CompletionModel::CompletionModel(QObject *parent)
    : QAbstractListModel(parent)
    // , m_filterModel(new CompletionProxyModel())
    // , m_userListModel(RoomManager::instance().userListModel())
    , m_emojiModel(new QConcatenateTablesProxyModel(this))
{
    connect(this, &CompletionModel::textChanged, this, &CompletionModel::updateCompletion);
    // m_emojiModel->addSourceModel(&CustomEmojiModel::instance());
    // m_emojiModel->addSourceModel(&EmojiModel::instance());
}

QString CompletionModel::text() const
{
    return m_text;
}

void CompletionModel::setText(const QString &text, const QString &fullText)
{
    m_text = text;
    m_fullText = fullText;
    Q_EMIT textChanged();
}

int CompletionModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    if (m_autoCompletionType == None) {
        return 0;
    }
    // return m_filterModel->rowCount();
    return {};
}

QVariant CompletionModel::data(const QModelIndex &index, int role) const
{
    // if (index.row() < 0 || index.row() >= m_filterModel->rowCount()) {
    //     return {};
    // }
    // auto filterIndex = m_filterModel->index(index.row(), 0);
    // if (m_autoCompletionType == User) {
    //     if (role == DisplayNameRole) {
    //         return m_filterModel->data(filterIndex, UserListModel::DisplayNameRole);
    //     }
    //     if (role == SubtitleRole) {
    //         return m_filterModel->data(filterIndex, UserListModel::UserIdRole);
    //     }
    //     if (role == IconNameRole) {
    //         return m_filterModel->data(filterIndex, UserListModel::AvatarRole);
    //     }
    // }
    //
    // if (m_autoCompletionType == Command) {
    //     if (role == DisplayNameRole) {
    //         return u"%1 %2"_s.arg(m_filterModel->data(filterIndex, ActionsModel::Prefix).toString(),
    //                               m_filterModel->data(filterIndex, ActionsModel::Parameters).toString());
    //     }
    //     if (role == SubtitleRole) {
    //         return m_filterModel->data(filterIndex, ActionsModel::Description);
    //     }
    //     if (role == IconNameRole) {
    //         return u"invalid"_s;
    //     }
    //     if (role == ReplacedTextRole) {
    //         return m_filterModel->data(filterIndex, ActionsModel::Prefix);
    //     }
    // }
    // if (m_autoCompletionType == Room) {
    //     if (role == DisplayNameRole) {
    //         return m_filterModel->data(filterIndex, RoomListModel::DisplayNameRole);
    //     }
    //     if (role == SubtitleRole) {
    //         return m_filterModel->data(filterIndex, RoomListModel::CanonicalAliasRole);
    //     }
    //     if (role == IconNameRole) {
    //         return m_filterModel->data(filterIndex, RoomListModel::AvatarRole).toString();
    //     }
    // }
    // if (m_autoCompletionType == Emoji) {
    //     if (role == DisplayNameRole) {
    //         return m_filterModel->data(filterIndex, CustomEmojiModel::DisplayRole);
    //     }
    //     if (role == IconNameRole) {
    //         return m_filterModel->data(filterIndex, CustomEmojiModel::MxcUrl);
    //     }
    //     if (role == ReplacedTextRole) {
    //         return m_filterModel->data(filterIndex, CustomEmojiModel::ReplacedTextRole);
    //     }
    //     if (role == SubtitleRole) {
    //         return m_filterModel->data(filterIndex, EmojiModel::DescriptionRole);
    //     }
    // }

    return {};
}

QHash<int, QByteArray> CompletionModel::roleNames() const
{
    return {
        {DisplayNameRole, "displayName"},
        {SubtitleRole, "subtitle"},
        {IconNameRole, "iconName"},
        {ReplacedTextRole, "replacedText"},
    };
}

void CompletionModel::updateCompletion()
{
    // if (text().startsWith(QLatin1Char('@'))) {
    //     m_filterModel->setSourceModel(m_userListModel);
    //     m_filterModel->setFilterRole(UserListModel::UserIdRole);
    //     m_filterModel->setSecondaryFilterRole(UserListModel::DisplayNameRole);
    //     m_filterModel->setFullText(m_fullText);
    //     m_filterModel->setFilterText(m_text);
    //     m_autoCompletionType = User;
    //     m_filterModel->invalidate();
    // } else if (text().startsWith(QLatin1Char('/'))) {
    //     m_filterModel->setSourceModel(&ActionsModel::instance());
    //     m_filterModel->setFilterRole(ActionsModel::Prefix);
    //     m_filterModel->setSecondaryFilterRole(-1);
    //     m_filterModel->setFullText(m_fullText);
    //     m_filterModel->setFilterText(m_text.mid(1));
    //     m_autoCompletionType = Command;
    //     m_filterModel->invalidate();
    // } else if (text().startsWith(QLatin1Char('#'))) {
    //     m_autoCompletionType = Room;
    //     m_filterModel->setSourceModel(m_roomListModel);
    //     m_filterModel->setFilterRole(RoomListModel::CanonicalAliasRole);
    //     m_filterModel->setSecondaryFilterRole(RoomListModel::DisplayNameRole);
    //     m_filterModel->setFullText(m_fullText);
    //     m_filterModel->setFilterText(m_text);
    //     m_filterModel->invalidate();
    // } else if (text().startsWith(QLatin1Char(':')) && text().size() > 1 && !text()[1].isUpper()
    //            && (m_fullText.indexOf(QLatin1Char(':'), 1) == -1
    //                || (m_fullText.indexOf(QLatin1Char(' ')) != -1 && m_fullText.indexOf(QLatin1Char(':'), 1) > m_fullText.indexOf(QLatin1Char(' '), 1)))) {
    //     m_filterModel->setSourceModel(m_emojiModel);
    //     m_autoCompletionType = Emoji;
    //     m_filterModel->setFilterRole(CustomEmojiModel::Name);
    //     m_filterModel->setSecondaryFilterRole(EmojiModel::DescriptionRole);
    //     m_filterModel->setFullText(m_fullText);
    //     m_filterModel->setFilterText(m_text);
    //     m_filterModel->invalidate();
    // } else {
    //     m_autoCompletionType = None;
    // }
    beginResetModel();
    endResetModel();
}

NeoChatRoom *CompletionModel::room() const
{
    return m_room.get();
}

void CompletionModel::setRoom(NeoChatRoom *room)
{
    m_room = room;
    Q_EMIT roomChanged();
}

CompletionModel::AutoCompletionType CompletionModel::autoCompletionType() const
{
    return m_autoCompletionType;
}

void CompletionModel::setAutoCompletionType(AutoCompletionType autoCompletionType)
{
    m_autoCompletionType = autoCompletionType;
    Q_EMIT autoCompletionTypeChanged();
}

RoomListModel *CompletionModel::roomListModel() const
{
    return m_roomListModel;
}

void CompletionModel::setRoomListModel(RoomListModel *roomListModel)
{
    m_roomListModel = roomListModel;
    Q_EMIT roomListModelChanged();
}

#include "moc_completionmodel.cpp"