#include <QtGui>

#include "findresultitem.h"
#include "findresultmodel.h"
#include "settings.h"
#include "treeitem.h"

extern Settings settings;

FindResultModel::FindResultModel(QObject *parent) : QAbstractItemModel(parent)
{
    QVector<QVariant> rootData;
    rootData << "Heading";
    rootItem = new FindResultItem(rootData);
    showParentsLevel =
        settings.value("/satellite/findResults/showParentsLevel", 1).toInt();
}

FindResultModel::~FindResultModel() { delete rootItem; }

void FindResultModel::clear()
{
    if (rootItem->childCount() > 0)
        removeRows(0, rowCount(QModelIndex()));
}

int FindResultModel::columnCount(const QModelIndex & /* parent */) const
{
    return rootItem->columnCount();
}

QVariant FindResultModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();

    if (role != Qt::DisplayRole && role != Qt::EditRole)
        return QVariant();

    FindResultItem *item = getItem(index);

    return item->data(index.column());
}

Qt::ItemFlags FindResultModel::flags(const QModelIndex &index) const
{
    if (!index.isValid())
        return Qt::NoItemFlags;

    return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}

QVariant FindResultModel::headerData(int section, Qt::Orientation orientation,
                                     int role) const
{
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
        return rootItem->data(section);

    return QVariant();
}

QModelIndex FindResultModel::index(FindResultItem *fri)
{
    if (!fri->parent())
        return QModelIndex();
    else
        return createIndex(fri->row(), 0, fri);
}

QModelIndex FindResultModel::index(int row, int column,
                                   const QModelIndex &parent) const
{
    if (parent.isValid() && parent.column() != 0)
        return QModelIndex();

    FindResultItem *parentItem = getItem(parent);

    FindResultItem *childItem = parentItem->child(row);
    if (childItem)
        return createIndex(row, column, childItem);
    else
        return QModelIndex();
}

bool FindResultModel::insertColumns(int position, int columns,
                                    const QModelIndex &parent)
{
    bool success;

    beginInsertColumns(parent, position, position + columns - 1);
    success = rootItem->insertColumns(position, columns);
    endInsertColumns();

    return success;
}

bool FindResultModel::insertRows(int position, int rows,
                                 const QModelIndex &parent)
{
    FindResultItem *parentItem = getItem(parent);
    bool success;

    beginInsertRows(parent, position, position + rows - 1);
    success =
        parentItem->insertChildren(position, rows, rootItem->columnCount());
    endInsertRows();

    return success;
}

QModelIndex FindResultModel::parent(const QModelIndex &index) const
{
    if (!index.isValid())
        return QModelIndex();

    FindResultItem *childItem = getItem(index);
    FindResultItem *parentItem = childItem->parent();

    if (parentItem == rootItem)
        return QModelIndex();

    return createIndex(parentItem->row(), 0, parentItem);
}

bool FindResultModel::removeColumns(int position, int columns,
                                    const QModelIndex &parent)
{
    bool success;

    beginRemoveColumns(parent, position, position + columns - 1);
    success = rootItem->removeColumns(position, columns);
    endRemoveColumns();

    if (rootItem->columnCount() == 0)
        removeRows(0, rowCount());

    return success;
}

bool FindResultModel::removeRows(int position, int rows,
                                 const QModelIndex &parent)
{
    FindResultItem *parentItem = getItem(parent);
    bool success = true;

    beginRemoveRows(parent, position, position + rows - 1);
    success = parentItem->removeChildren(position, rows);
    endRemoveRows();

    return success;
}

int FindResultModel::rowCount(const QModelIndex &parent) const
{
    FindResultItem *parentItem = getItem(parent);

    return parentItem->childCount();
}

bool FindResultModel::setData(const QModelIndex &index, const QVariant &value,
                              int role)
{
    if (role != Qt::EditRole)
        return false;

    FindResultItem *item = getItem(index);
    bool result = item->setData(index.column(), value);

    if (result)
        emit dataChanged(index, index);

    return result;
}

bool FindResultModel::setHeaderData(int section, Qt::Orientation orientation,
                                    const QVariant &value, int role)
{
    if (role != Qt::EditRole || orientation != Qt::Horizontal)
        return false;

    bool result = rootItem->setData(section, value);

    if (result)
        emit headerDataChanged(orientation, section, section);

    return result;
}

FindResultItem *FindResultModel::getItem(const QModelIndex &index) const
{
    if (index.isValid()) {
        FindResultItem *item =
            static_cast<FindResultItem *>(index.internalPointer());
        if (item)
            return item;
    }
    return rootItem;
}

FindResultItem *FindResultModel::addItem(TreeItem *ti)
{
    FindResultItem *ni = nullptr;
    if (ti) {
        QModelIndex parix(index(rootItem));

        emit layoutAboutToBeChanged();

        int n = rowCount(parix);
        beginInsertRows(parix, n, n);
        if (rootItem->insertChildren(n, 1, 0)) {
            QString h = ti->headingPlainWithParents(showParentsLevel);
            QModelIndex ix = index(n, 0, QModelIndex());
            setData(ix, QVariant(h), Qt::EditRole);
            ni = getItem(ix);
            ni->setOriginal(ti);
        }
        endInsertRows();

        emit layoutChanged();
    }
    return ni;
}

FindResultItem *FindResultModel::addSubItem(FindResultItem *parent,
                                            const QString &s, TreeItem *pi,
                                            int i)
{
    FindResultItem *ni = nullptr;
    if (pi && parent) {
        QModelIndex parix(index(parent));

        emit layoutAboutToBeChanged();

        int n = rowCount(parix);
        beginInsertRows(parix, n, n);

        QModelIndex ix;
        if (parent->insertChildren(n, 1, 0)) {
            ix = index(n, 0, parix);
            setData(ix, QVariant(s), Qt::EditRole);
            ni = getItem(ix);
            ni->setOriginal(pi);
            ni->setOriginalIndex(i);
        }
        endInsertRows();
        emit layoutChanged();
    }
    return ni;
}

void FindResultModel::setSearchString(const QString &s) { searchString = s; }

QString FindResultModel::getSearchString() { return searchString; }

void FindResultModel::setSearchFlags(QTextDocument::FindFlags f)
{
    searchFlags = f;
}

QTextDocument::FindFlags FindResultModel::getSearchFlags()
{
    return searchFlags;
}

void FindResultModel::setShowParentsLevel(uint i)
{
    showParentsLevel = i;
    settings.setValue("/findResults/showParentsLevel", showParentsLevel);
}

uint FindResultModel::getShowParentsLevel() { return showParentsLevel; }
