#include "infocreator.hpp"

#include <algorithm>

#include <QLabel>
#include <QUuid>

#include <components/misc/stringops.hpp>

#include "../../model/doc/document.hpp"

#include "../../model/world/data.hpp"
#include "../../model/world/commands.hpp"
#include "../../model/world/columns.hpp"
#include "../../model/world/idtable.hpp"
#include "../../model/world/idcompletionmanager.hpp"

#include "../widget/droplineedit.hpp"

std::string CSVWorld::InfoCreator::getId() const
{
    std::string id = Misc::StringUtils::lowerCase (mTopic->text().toUtf8().constData());

    std::string unique = QUuid::createUuid().toByteArray().data();

    unique.erase (std::remove (unique.begin(), unique.end(), '-'), unique.end());

    unique = unique.substr (1, unique.size()-2);

    return id + '#' + unique;
}

void CSVWorld::InfoCreator::configureCreateCommand (CSMWorld::CreateCommand& command) const
{
    CSMWorld::IdTable& table = dynamic_cast<CSMWorld::IdTable&> (*getData().getTableModel (getCollectionId()));

    if (getCollectionId() == CSMWorld::UniversalId::Type_TopicInfos)
    {
        command.addValue (table.findColumnIndex(CSMWorld::Columns::ColumnId_Topic), mTopic->text());
        command.addValue (table.findColumnIndex(CSMWorld::Columns::ColumnId_Rank), -1);
        command.addValue (table.findColumnIndex(CSMWorld::Columns::ColumnId_Gender), -1);
        command.addValue (table.findColumnIndex(CSMWorld::Columns::ColumnId_PcRank), -1);
    }
    else
    {
        command.addValue (table.findColumnIndex(CSMWorld::Columns::ColumnId_Journal), mTopic->text());
    }
}

CSVWorld::InfoCreator::InfoCreator (CSMWorld::Data& data, QUndoStack& undoStack,
    const CSMWorld::UniversalId& id, CSMWorld::IdCompletionManager& completionManager)
: GenericCreator (data, undoStack, id)
{
    // Determine if we're dealing with topics or journals.
    CSMWorld::ColumnBase::Display displayType = CSMWorld::ColumnBase::Display_Topic;
    QString labelText = "Topic";
    if (getCollectionId().getType() == CSMWorld::UniversalId::Type_JournalInfos)
    {
        displayType = CSMWorld::ColumnBase::Display_Journal;
        labelText = "Journal";
    }

    QLabel *label = new QLabel (labelText, this);
    insertBeforeButtons (label, false);

    // Add topic/journal ID input with auto-completion.
    // Only existing topic/journal IDs are accepted so no ID validation is performed.
    mTopic = new CSVWidget::DropLineEdit(displayType, this);
    mTopic->setCompleter(completionManager.getCompleter(displayType).get());
    insertBeforeButtons (mTopic, true);

    setManualEditing (false);

    connect (mTopic, SIGNAL (textChanged (const QString&)), this, SLOT (topicChanged()));
    connect (mTopic, SIGNAL (returnPressed()), this, SLOT (inputReturnPressed()));
}

void CSVWorld::InfoCreator::cloneMode (const std::string& originId,
    const CSMWorld::UniversalId::Type type)
{
    CSMWorld::IdTable& infoTable =
        dynamic_cast<CSMWorld::IdTable&> (*getData().getTableModel (getCollectionId()));

    int topicColumn = infoTable.findColumnIndex (
        getCollectionId().getType()==CSMWorld::UniversalId::Type_TopicInfos ?
        CSMWorld::Columns::ColumnId_Topic : CSMWorld::Columns::ColumnId_Journal);

    mTopic->setText (
        infoTable.data (infoTable.getModelIndex (originId, topicColumn)).toString());

    GenericCreator::cloneMode (originId, type);
}

void CSVWorld::InfoCreator::reset()
{
    mTopic->setText ("");
    GenericCreator::reset();
}

std::string CSVWorld::InfoCreator::getErrors() const
{
    // We ignore errors from GenericCreator here, because they can never happen in an InfoCreator.
    std::string errors;

    std::string topic = mTopic->text().toUtf8().constData();

    if ((getCollectionId().getType()==CSMWorld::UniversalId::Type_TopicInfos ?
        getData().getTopics() : getData().getJournals()).searchId (topic)==-1)
    {
        errors += "Invalid Topic ID";
    }

    return errors;
}

void CSVWorld::InfoCreator::focus()
{
    mTopic->setFocus();
}

void CSVWorld::InfoCreator::topicChanged()
{
    update();
}

CSVWorld::Creator *CSVWorld::InfoCreatorFactory::makeCreator(CSMDoc::Document& document,
                                                             const CSMWorld::UniversalId& id) const
{
    return new InfoCreator(document.getData(),
                           document.getUndoStack(),
                           id,
                           document.getIdCompletionManager());
}
