/************************************************************************
 **
 **  @file   dialogalongline.cpp
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   November 15, 2013
 **
 **  @brief
 **  @copyright
 **  This source code is part of the Valentina project, a pattern making
 **  program, whose allow create and modeling patterns of clothing.
 **  Copyright (C) 2013-2015 Valentina project
 **  <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
 **
 **  Valentina is free software: you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License as published by
 **  the Free Software Foundation, either version 3 of the License, or
 **  (at your option) any later version.
 **
 **  Valentina is distributed in the hope that it will be useful,
 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 **  GNU General Public License for more details.
 **
 **  You should have received a copy of the GNU General Public License
 **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
 **
 *************************************************************************/

#include "dialogalongline.h"

#include <QColor>
#include <QComboBox>
#include <QDialog>
#include <QLabel>
#include <QLatin1String>
#include <QLineEdit>
#include <QPlainTextEdit>
#include <QPointer>
#include <QPushButton>
#include <QSharedPointer>
#include <QTimer>
#include <QToolButton>
#include <new>

#include "../../visualization/line/vistoolalongline.h"
#include "../../visualization/visualization.h"
#include "../ifc/xml/vabstractpattern.h"
#include "../support/dialogeditwrongformula.h"
#include "../vgeometry/../ifc/ifcdef.h"
#include "../vgeometry/vpointf.h"
#include "../vmisc/vabstractapplication.h"
#include "../vmisc/vcommonsettings.h"
#include "../vpatterndb/vcontainer.h"
#include "../vpatterndb/variables/vlinelength.h"
#include "../vpatterndb/vtranslatevars.h"
#include "ui_dialogalongline.h"
#include "../vwidgets/vabstractmainwindow.h"

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief DialogAlongLine create dialog
 * @param data container with data
 * @param parent parent widget
 */
DialogAlongLine::DialogAlongLine(const VContainer *data, quint32 toolId, QWidget *parent)
    : DialogTool(data, toolId, parent),
      ui(new Ui::DialogAlongLine),
      m_timerFormula(new QTimer(this))
{
    ui->setupUi(this);

    m_timerFormula->setSingleShot(true);
    connect(m_timerFormula, &QTimer::timeout, this, &DialogAlongLine::EvalFormula);

    ui->lineEditNamePoint->setClearButtonEnabled(true);

    ui->lineEditNamePoint->setText(
                VAbstractValApplication::VApp()->getCurrentDocument()->GenerateLabel(LabelType::NewLabel));

    this->m_formulaBaseHeight = ui->plainTextEditFormula->height();
    ui->plainTextEditFormula->installEventFilter(this);

    InitOkCancelApply(ui);

    FillComboBoxPoints(ui->comboBoxFirstPoint);
    FillComboBoxPoints(ui->comboBoxSecondPoint);
    FillComboBoxTypeLine(ui->comboBoxLineType, LineStylesPics());
    FillComboBoxLineColors(ui->comboBoxLineColor);

    connect(ui->toolButtonExprLength, &QPushButton::clicked, this, &DialogAlongLine::FXLength);
    connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, [this]()
    {
        CheckPointLabel(this, ui->lineEditNamePoint, ui->labelEditNamePoint, m_pointName, this->data, m_flagName);
        CheckState();
    });
    connect(ui->plainTextEditFormula, &QPlainTextEdit::textChanged, this, [this]()
    {
        m_timerFormula->start(formulaTimerTimeout);
    });
    connect(ui->pushButtonGrowLength, &QPushButton::clicked, this, &DialogAlongLine::DeployFormulaTextEdit);
    connect(ui->comboBoxFirstPoint, &QComboBox::currentTextChanged,
            this, &DialogAlongLine::PointChanged);
    connect(ui->comboBoxSecondPoint, &QComboBox::currentTextChanged,
            this, &DialogAlongLine::PointChanged);

    vis = new VisToolAlongLine(data);

    // Call after initialization vis!!!!
    SetTypeLine(TypeLineNone);//By default don't show line

    ui->tabWidget->setCurrentIndex(0);
    SetTabStopDistance(ui->plainTextEditToolNotes);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::PointChanged()
{
    QColor color;
    if (GetFirstPointId() == GetSecondPointId())
    {
        m_flagError = false;
        color = errorColor;
    }
    else
    {
        m_flagError = true;
        color = OkColor(this);
    }
    SetCurrentLength();
    ChangeColor(ui->labelFirstPoint, color);
    ChangeColor(ui->labelSecondPoint, color);
    CheckState();
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::FXLength()
{
    auto *dialog = new DialogEditWrongFormula(data, toolId, this);
    dialog->setWindowTitle(tr("Edit length"));
    dialog->SetFormula(GetFormula());
    dialog->setPostfix(UnitsToStr(VAbstractValApplication::VApp()->patternUnits(), true));
    if (dialog->exec() == QDialog::Accepted)
    {
        SetFormula(dialog->GetFormula());
    }
    delete dialog;
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::EvalFormula()
{
    FormulaData formulaData;
    formulaData.formula = ui->plainTextEditFormula->toPlainText();
    formulaData.variables = data->DataVariables();
    formulaData.labelEditFormula = ui->labelEditFormula;
    formulaData.labelResult = ui->labelResultCalculation;
    formulaData.postfix = UnitsToStr(VAbstractValApplication::VApp()->patternUnits(), true);
    formulaData.checkZero = false;

    Eval(formulaData, m_flagFormula);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::ShowVisualization()
{
    AddVisualization<VisToolAlongLine>();
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::DeployFormulaTextEdit()
{
    DeployFormula(this, ui->plainTextEditFormula, ui->pushButtonGrowLength, m_formulaBaseHeight);
}

//---------------------------------------------------------------------------------------------------------------------
DialogAlongLine::~DialogAlongLine()
{
    delete ui;
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief ChoosedObject gets id and type of selected object. Save right data and ignore wrong.
 * @param id id of point or detail
 * @param type type of object
 */
void DialogAlongLine::ChosenObject(quint32 id, const SceneObject &type)
{
    if (prepare)// After first choose we ignore all objects
    {
        return;
    }

    if (type == SceneObject::Point)
    {
        auto *line = qobject_cast<VisToolAlongLine *>(vis);
        SCASSERT(line != nullptr)

        const QString toolTip = tr("Select second point of line");
        switch (m_number)
        {
            case 0:
                if (SetObject(id, ui->comboBoxFirstPoint, toolTip))
                {
                    m_number++;
                    line->VisualMode(id);
                }
                break;
            case 1:
                ChosenSecondPoint(id, toolTip);
                break;
            default:
                break;
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::SaveData()
{
    m_pointName = ui->lineEditNamePoint->text();

    m_formula = ui->plainTextEditFormula->toPlainText();

    auto *line = qobject_cast<VisToolAlongLine *>(vis);
    SCASSERT(line != nullptr)

    line->SetPoint1Id(GetFirstPointId());
    line->SetPoint2Id(GetSecondPointId());
    line->SetLength(m_formula);
    line->SetLineStyle(LineStyleToPenStyle(GetTypeLine()));
    line->RefreshGeometry();
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::closeEvent(QCloseEvent *event)
{
    ui->plainTextEditFormula->blockSignals(true);
    DialogTool::closeEvent(event);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::SetCurrentLength()
{
    VLengthLine *length = nullptr;
    try
    {
        const QSharedPointer<VPointF> p1 = data->GeometricObject<VPointF>(GetFirstPointId());
        const QSharedPointer<VPointF> p2 = data->GeometricObject<VPointF>(GetSecondPointId());

        length = new VLengthLine(p1.data(), GetFirstPointId(), p2.data(), GetSecondPointId(), *data->GetPatternUnit());
    }
    catch (const VExceptionBadId &)
    {
        QScopedPointer<VPointF> p1(new VPointF());
        QScopedPointer<VPointF> p2(new VPointF());
        length = new VLengthLine(p1.data(), GetFirstPointId(), p2.data(), GetSecondPointId(), *data->GetPatternUnit());
    }

    SCASSERT(length != nullptr)
    length->SetName(currentLength);

    auto *locData = const_cast<VContainer *> (data);
    locData->AddVariable(length);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::ChosenSecondPoint(quint32 id, const QString &toolTip)
{
    if (SetObject(id, ui->comboBoxSecondPoint, QString()))
    {
        auto *line = qobject_cast<VisToolAlongLine *>(vis);
        SCASSERT(line != nullptr)

        if (m_flagError)
        {
            line->SetPoint2Id(id);
            if (m_buildMidpoint)
            {
                SetFormula(currentLength + QStringLiteral("/2"));
                line->SetMode(Mode::Show);
            }
            else
            {
                auto *window = qobject_cast<VAbstractMainWindow *>(
                    VAbstractValApplication::VApp()->getMainWindow());
                SCASSERT(window != nullptr)
                connect(line, &Visualization::ToolTip, window, &VAbstractMainWindow::ShowToolTip);
            }

            line->RefreshGeometry();

            prepare = true;

            if (m_buildMidpoint || not VAbstractValApplication::VApp()->Settings()->IsInteractiveTools())
            {
                FinishCreating();
            }
        }
        else
        {
            emit ToolTip(toolTip);
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::FinishCreating()
{
    vis->SetMode(Mode::Show);
    vis->RefreshGeometry();
    emit ToolTip(QString());
    setModal(true);
    show();
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief SetSecondPointId set id second point of line
 * @param value id
 */
void DialogAlongLine::SetSecondPointId(quint32 value)
{
    setCurrentPointId(ui->comboBoxSecondPoint, value);

    auto *line = qobject_cast<VisToolAlongLine *>(vis);
    SCASSERT(line != nullptr)
    line->SetPoint2Id(value);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::SetNotes(const QString &notes)
{
    ui->plainTextEditToolNotes->setPlainText(notes);
}

//---------------------------------------------------------------------------------------------------------------------
auto DialogAlongLine::GetNotes() const -> QString
{
    return ui->plainTextEditToolNotes->toPlainText();
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::Build(const Tool &type)
{
    if (type == Tool::Midpoint)
    {
        m_buildMidpoint = true;
        auto *line = qobject_cast<VisToolAlongLine *>(vis);
        SCASSERT(line != nullptr)
        line->SetMidPointMode(m_buildMidpoint);
    }
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::ShowDialog(bool click)
{
    if (not prepare || m_buildMidpoint)
    {
        return;
    }

    if (click)
    {
        // The check need to ignore first release of mouse button.
        // User can select point by clicking on a label.
        if (not m_firstRelease)
        {
            m_firstRelease = true;
            return;
        }

        auto *scene = qobject_cast<VMainGraphicsScene *>(VAbstractValApplication::VApp()->getCurrentScene());
        SCASSERT(scene != nullptr)

        const QSharedPointer<VPointF> p1 = data->GeometricObject<VPointF>(GetFirstPointId());
        const QSharedPointer<VPointF> p2 = data->GeometricObject<VPointF>(GetSecondPointId());
        QLineF baseLine(static_cast<QPointF>(*p1), static_cast<QPointF>(*p2));

        QLineF line(static_cast<QPointF>(*p1), scene->getScenePos());

        qreal len = line.length();
        qreal angleTo = baseLine.angleTo(line);
        if (angleTo > 90 && angleTo < 270)
        {
            len *= -1;
        }

        SetFormula(QString::number(FromPixel(len, *data->GetPatternUnit())));
    }

    FinishCreating();
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief SetFirstPointId set id first point of line
 * @param value id
 */
void DialogAlongLine::SetFirstPointId(quint32 value)
{
    setCurrentPointId(ui->comboBoxFirstPoint, value);

    auto *line = qobject_cast<VisToolAlongLine *>(vis);
    SCASSERT(line != nullptr)
    line->SetPoint1Id(value);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief SetFormula set string of formula
 * @param value formula
 */
void DialogAlongLine::SetFormula(const QString &value)
{
    m_formula = VAbstractApplication::VApp()->TrVars()
            ->FormulaToUser(value, VAbstractApplication::VApp()->Settings()->GetOsSeparator());
    // increase height if needed.
    if (m_formula.length() > 80)
    {
        this->DeployFormulaTextEdit();
    }
    ui->plainTextEditFormula->setPlainText(m_formula);

    auto *line = qobject_cast<VisToolAlongLine *>(vis);
    SCASSERT(line != nullptr)
    line->SetLength(m_formula);

    MoveCursorToEnd(ui->plainTextEditFormula);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief SetTypeLine set type of line
 * @param value type
 */
void DialogAlongLine::SetTypeLine(const QString &value)
{
    ChangeCurrentData(ui->comboBoxLineType, value);
    vis->SetLineStyle(LineStyleToPenStyle(value));
}

//---------------------------------------------------------------------------------------------------------------------
auto DialogAlongLine::GetLineColor() const -> QString
{
    return GetComboBoxCurrentData(ui->comboBoxLineColor, ColorBlack);
}

//---------------------------------------------------------------------------------------------------------------------
void DialogAlongLine::SetLineColor(const QString &value)
{
    ChangeCurrentData(ui->comboBoxLineColor, value);
}

//---------------------------------------------------------------------------------------------------------------------
auto DialogAlongLine::GetPointName() const -> QString
{
    return m_pointName;
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief SetPointName set name of point
 * @param value name
 */
void DialogAlongLine::SetPointName(const QString &value)
{
    m_pointName = value;
    ui->lineEditNamePoint->setText(m_pointName);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief GetTypeLine return type of line
 * @return type
 */
auto DialogAlongLine::GetTypeLine() const -> QString
{
    return GetComboBoxCurrentData(ui->comboBoxLineType, TypeLineLine);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief GetFormula return string of formula
 * @return formula
 */
auto DialogAlongLine::GetFormula() const -> QString
{
    return VTranslateVars::TryFormulaFromUser(m_formula, VAbstractApplication::VApp()->Settings()->GetOsSeparator());
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief GetFirstPointId return id first point of line
 * @return id
 */
auto DialogAlongLine::GetFirstPointId() const -> quint32
{
    return getCurrentObjectId(ui->comboBoxFirstPoint);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief GetSecondPointId return id second point of line
 * @return id
 */
auto DialogAlongLine::GetSecondPointId() const -> quint32
{
    return getCurrentObjectId(ui->comboBoxSecondPoint);
}