#include "mapheaderform.h"
#include "ui_mapheaderform.h"

MapHeaderForm::MapHeaderForm(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::MapHeaderForm)
{
    ui->setupUi(this);

    // This value is an s8 by default, but we don't need to unnecessarily limit users.
    ui->spinBox_FloorNumber->setMinimum(INT_MIN);
    ui->spinBox_FloorNumber->setMaximum(INT_MAX);

    // The layout for this UI keeps fields at their size hint, which is a little short for the line edit.
    ui->lineEdit_LocationName->setMinimumWidth(ui->comboBox_Location->sizeHint().width());

    connect(ui->comboBox_Song,        &QComboBox::currentTextChanged, this, &MapHeaderForm::onSongUpdated);
    connect(ui->comboBox_Location,    &QComboBox::currentTextChanged, this, &MapHeaderForm::onLocationChanged);
    connect(ui->comboBox_Region,      &QComboBox::currentTextChanged, this, &MapHeaderForm::onRegionChanged);
    connect(ui->comboBox_Weather,     &QComboBox::currentTextChanged, this, &MapHeaderForm::onWeatherChanged);
    connect(ui->comboBox_Type,        &QComboBox::currentTextChanged, this, &MapHeaderForm::onTypeChanged);
    connect(ui->comboBox_BattleScene, &QComboBox::currentTextChanged, this, &MapHeaderForm::onBattleSceneChanged);
    connect(ui->checkBox_RequiresFlash,    &QCheckBox::toggled, this, &MapHeaderForm::onRequiresFlashChanged);
    connect(ui->checkBox_ShowLocationName, &QCheckBox::toggled, this, &MapHeaderForm::onShowLocationNameChanged);
    connect(ui->checkBox_AllowRunning,     &QCheckBox::toggled, this, &MapHeaderForm::onAllowRunningChanged);
    connect(ui->checkBox_AllowBiking,      &QCheckBox::toggled, this, &MapHeaderForm::onAllowBikingChanged);
    connect(ui->checkBox_AllowEscaping,    &QCheckBox::toggled, this, &MapHeaderForm::onAllowEscapingChanged);

    connect(ui->spinBox_FloorNumber, QOverload<int>::of(&QSpinBox::valueChanged), this, &MapHeaderForm::onFloorNumberChanged);

    connect(ui->lineEdit_LocationName, &QLineEdit::textChanged, this, &MapHeaderForm::onLocationNameChanged);
}

MapHeaderForm::~MapHeaderForm()
{
    delete ui;
}

void MapHeaderForm::setProject(Project * project, bool allowChanges) {
    clear();

    if (m_project) {
        m_project->disconnect(this);
    }
    m_project = project;
    m_allowProjectChanges = allowChanges;

    if (!m_project)
        return;

    // Populate combo boxes

    const QSignalBlocker b_Song(ui->comboBox_Song);
    ui->comboBox_Song->clear();
    ui->comboBox_Song->addItems(m_project->songNames);

    const QSignalBlocker b_Weather(ui->comboBox_Weather);
    ui->comboBox_Weather->clear();
    ui->comboBox_Weather->addItems(m_project->weatherNames);

    const QSignalBlocker b_Type(ui->comboBox_Type);
    ui->comboBox_Type->clear();
    ui->comboBox_Type->addItems(m_project->mapTypes);

    const QSignalBlocker b_BattleScene(ui->comboBox_BattleScene);
    ui->comboBox_BattleScene->clear();
    ui->comboBox_BattleScene->addItems(m_project->mapBattleScenes);

    const QSignalBlocker b_Locations(ui->comboBox_Location);
    ui->comboBox_Location->clear();
    ui->comboBox_Location->addItems(m_project->locationNames());

    const QSignalBlocker b_Regions(ui->comboBox_Region);
    ui->comboBox_Region->clear();
    ui->comboBox_Region->addItems(m_project->regionIdNames);

    // Hide config-specific settings

    bool hasFlags = projectConfig.mapAllowFlagsEnabled;
    ui->checkBox_AllowRunning->setVisible(hasFlags);
    ui->checkBox_AllowBiking->setVisible(hasFlags);
    ui->checkBox_AllowEscaping->setVisible(hasFlags);
    ui->label_AllowRunning->setVisible(hasFlags);
    ui->label_AllowBiking->setVisible(hasFlags);
    ui->label_AllowEscaping->setVisible(hasFlags);

    bool floorNumEnabled = projectConfig.floorNumberEnabled;
    ui->spinBox_FloorNumber->setVisible(floorNumEnabled);
    ui->label_FloorNumber->setVisible(floorNumEnabled);

    // Enable/disable region combo box
    ui->label_Region->setVisible(m_project->usingMultiRegion);
    ui->comboBox_Region->setVisible(m_project->usingMultiRegion);

    // If the project changes any of the displayed data, update it accordingly.
    connect(m_project, &Project::mapSectionIdNamesChanged, this, &MapHeaderForm::setLocations);
    connect(m_project, &Project::regionIdNamesChanged, this, &MapHeaderForm::setRegions);
    connect(m_project, &Project::mapSectionDisplayNameChanged, this, &MapHeaderForm::updateLocationName);
}

void MapHeaderForm::setLocations(const QStringList &locations) {
    const QSignalBlocker b(ui->comboBox_Location);
    const QString before = ui->comboBox_Location->currentText();
    ui->comboBox_Location->clear();
    ui->comboBox_Location->addItems(locations);
    ui->comboBox_Location->setTextItem(before);
}

void MapHeaderForm::setRegions(const QStringList &regions) {
    const QSignalBlocker b(ui->comboBox_Region);
    const QString before = ui->comboBox_Region->currentText();
    ui->comboBox_Region->clear();
    ui->comboBox_Region->addItems(regions);
    ui->comboBox_Region->setTextItem(before);
}

// Assign a MapHeader that the form will keep in sync with the UI.
void MapHeaderForm::setHeader(MapHeader *header) {
    if (m_header == header)
        return;

    if (m_header) {
        m_header->disconnect(this);
    }
    m_header = header;

    if (!m_header) {
        clear();
        return;
    }

    // If the MapHeader is changed externally (for example, with the scripting API) update the UI accordingly
    connect(m_header, &MapHeader::songChanged, this, &MapHeaderForm::setSong);
    connect(m_header, &MapHeader::locationChanged, this, &MapHeaderForm::setLocation);
    connect(m_header, &MapHeader::regionChanged, this, &MapHeaderForm::setRegion);
    connect(m_header, &MapHeader::requiresFlashChanged, this, &MapHeaderForm::setRequiresFlash);
    connect(m_header, &MapHeader::weatherChanged, this, &MapHeaderForm::setWeather);
    connect(m_header, &MapHeader::typeChanged, this, &MapHeaderForm::setType);
    connect(m_header, &MapHeader::battleSceneChanged, this, &MapHeaderForm::setBattleScene);
    connect(m_header, &MapHeader::showsLocationNameChanged, this, &MapHeaderForm::setShowsLocationName);
    connect(m_header, &MapHeader::allowsRunningChanged, this, &MapHeaderForm::setAllowsRunning);
    connect(m_header, &MapHeader::allowsBikingChanged, this, &MapHeaderForm::setAllowsBiking);
    connect(m_header, &MapHeader::allowsEscapingChanged, this, &MapHeaderForm::setAllowsEscaping);
    connect(m_header, &MapHeader::floorNumberChanged, this, &MapHeaderForm::setFloorNumber);

    // Immediately update the UI to reflect the assigned MapHeader
    setHeaderData(*m_header);
}

void MapHeaderForm::clear() {
    m_header = nullptr;
    setHeaderData(MapHeader());
}

void MapHeaderForm::setHeaderData(const MapHeader &header) {
    setSong(header.song());
    setLocation(header.location());
    setRegion(header.region());
    setRequiresFlash(header.requiresFlash());
    setWeather(header.weather());
    setType(header.type());
    setBattleScene(header.battleScene());
    setShowsLocationName(header.showsLocationName());
    setAllowsRunning(header.allowsRunning());
    setAllowsBiking(header.allowsBiking());
    setAllowsEscaping(header.allowsEscaping());
    setFloorNumber(header.floorNumber());
    updateLocationName();
}

MapHeader MapHeaderForm::headerData() const {
    if (m_header)
        return *m_header;

    // Build header from UI
    MapHeader header;
    header.setSong(song());
    header.setLocation(location());
    header.setRegion(region());
    header.setRequiresFlash(requiresFlash());
    header.setWeather(weather());
    header.setType(type());
    header.setBattleScene(battleScene());
    header.setShowsLocationName(showsLocationName());
    header.setAllowsRunning(allowsRunning());
    header.setAllowsBiking(allowsBiking());
    header.setAllowsEscaping(allowsEscaping());
    header.setFloorNumber(floorNumber());
    return header;
}

void MapHeaderForm::updateLocationName() {
    setLocationName(m_project ? m_project->getMapsecDisplayName(location()) : QString());
}

// Set data in UI
void MapHeaderForm::setSong(const QString &song) {                 setText(ui->comboBox_Song, song); }
void MapHeaderForm::setLocation(const QString &location) {         setText(ui->comboBox_Location, location); }
void MapHeaderForm::setRegion(const QString &region) {             setText(ui->comboBox_Region, region); }
void MapHeaderForm::setLocationName(const QString &locationName) { setText(ui->lineEdit_LocationName, locationName); }
void MapHeaderForm::setRequiresFlash(bool requiresFlash) {         ui->checkBox_RequiresFlash->setChecked(requiresFlash); }
void MapHeaderForm::setWeather(const QString &weather) {           setText(ui->comboBox_Weather, weather); }
void MapHeaderForm::setType(const QString &type) {                 setText(ui->comboBox_Type, type); }
void MapHeaderForm::setBattleScene(const QString &battleScene) {   setText(ui->comboBox_BattleScene, battleScene); }
void MapHeaderForm::setShowsLocationName(bool showsLocationName) { ui->checkBox_ShowLocationName->setChecked(showsLocationName); }
void MapHeaderForm::setAllowsRunning(bool allowsRunning) {         ui->checkBox_AllowRunning->setChecked(allowsRunning); }
void MapHeaderForm::setAllowsBiking(bool allowsBiking) {           ui->checkBox_AllowBiking->setChecked(allowsBiking); }
void MapHeaderForm::setAllowsEscaping(bool allowsEscaping) {       ui->checkBox_AllowEscaping->setChecked(allowsEscaping); }
void MapHeaderForm::setFloorNumber(int floorNumber) {              ui->spinBox_FloorNumber->setValue(floorNumber); }

// If we always call setText / setTextItem the user's cursor may move to the end of the text while they're typing.
void MapHeaderForm::setText(NoScrollComboBox *combo, const QString &text) const {
    if (combo->currentText() != text)
        combo->setTextItem(text);
}
void MapHeaderForm::setText(QLineEdit *lineEdit, const QString &text) const {
    if (lineEdit->text() != text)
        lineEdit->setText(text);
}

// Read data from UI
QString MapHeaderForm::song() const {           return ui->comboBox_Song->currentText(); }
QString MapHeaderForm::location() const {       return ui->comboBox_Location->currentText(); }
QString MapHeaderForm::region() const {         return ui->comboBox_Region->currentText(); }
QString MapHeaderForm::locationName() const {   return ui->lineEdit_LocationName->text(); }
bool MapHeaderForm::requiresFlash() const {     return ui->checkBox_RequiresFlash->isChecked(); }
QString MapHeaderForm::weather() const {        return ui->comboBox_Weather->currentText(); }
QString MapHeaderForm::type() const {           return ui->comboBox_Type->currentText(); }
QString MapHeaderForm::battleScene() const {    return ui->comboBox_BattleScene->currentText(); }
bool MapHeaderForm::showsLocationName() const { return ui->checkBox_ShowLocationName->isChecked(); }
bool MapHeaderForm::allowsRunning() const {     return ui->checkBox_AllowRunning->isChecked(); }
bool MapHeaderForm::allowsBiking() const {      return ui->checkBox_AllowBiking->isChecked(); }
bool MapHeaderForm::allowsEscaping() const {    return ui->checkBox_AllowEscaping->isChecked(); }
int MapHeaderForm::floorNumber() const {        return ui->spinBox_FloorNumber->value(); }

// Send changes in UI to tracked MapHeader (if there is one)
void MapHeaderForm::onSongUpdated(const QString &song) {               if (m_header) m_header->setSong(song); }
void MapHeaderForm::onWeatherChanged(const QString &weather) {         if (m_header) m_header->setWeather(weather); }
void MapHeaderForm::onTypeChanged(const QString &type) {               if (m_header) m_header->setType(type); }
void MapHeaderForm::onBattleSceneChanged(const QString &battleScene) { if (m_header) m_header->setBattleScene(battleScene); }
void MapHeaderForm::onRequiresFlashChanged(bool enabled) {             if (m_header) m_header->setRequiresFlash(enabled); }
void MapHeaderForm::onShowLocationNameChanged(bool enabled) {          if (m_header) m_header->setShowsLocationName(enabled); }
void MapHeaderForm::onAllowRunningChanged(bool enabled) {              if (m_header) m_header->setAllowsRunning(enabled); }
void MapHeaderForm::onAllowBikingChanged(bool enabled) {               if (m_header) m_header->setAllowsBiking(enabled); }
void MapHeaderForm::onAllowEscapingChanged(bool enabled) {             if (m_header) m_header->setAllowsEscaping(enabled); }
void MapHeaderForm::onFloorNumberChanged(int offset) {                 if (m_header) m_header->setFloorNumber(offset); }
void MapHeaderForm::onLocationChanged(const QString &location) {
    if (m_header) m_header->setLocation(location);
    updateLocationName();
}
void MapHeaderForm::onRegionChanged(const QString &region) {           if (m_header) m_header->setRegion(region); }
void MapHeaderForm::onLocationNameChanged(const QString &locationName) {
    if (m_project && m_allowProjectChanges) {
        // The location name is actually part of the project, not the map header.
        // If the field is changed in the UI we can push these changes to the project.
        m_project->setMapsecDisplayName(location(), locationName);
    }
}