#include "dlg_create_token.h"

#include "../../client/settings/cache_settings.h"
#include "../../interface/widgets/printing_selector/printing_selector.h"
#include "libcockatrice/card/card_info.h"
#include "libcockatrice/card/database/card_database_querier.h"
#include "libcockatrice/card/printing/exact_card.h"
#include "token_preview_widget.h"

#include <QByteArray>
#include <QChar>
#include <QCheckBox>
#include <QCloseEvent>
#include <QComboBox>
#include <QDialogButtonBox>
#include <QGridLayout>
#include <QGroupBox>
#include <QHeaderView>
#include <QItemSelectionModel>
#include <QLabel>
#include <QLineEdit>
#include <QModelIndex>
#include <QRadioButton>
#include <QSet>
#include <QSignalBlocker>
#include <QTabWidget>
#include <QTimer>
#include <QTreeView>
#include <QVBoxLayout>
#include <QVariant>
#include <QWidget>
#include <libcockatrice/card/card_localization.h>
#include <libcockatrice/card/database/card_database_manager.h>
#include <libcockatrice/models/database/card_database_model.h>
#include <libcockatrice/models/database/token/token_display_model.h>
#include <libcockatrice/settings/card_override_settings.h>
#include <libcockatrice/settings/cards_display_settings.h>
#include <libcockatrice/settings/interface_settings.h>
#include <libcockatrice/settings/layouts_settings.h>
#include <libcockatrice/utility/card_ref.h>
#include <libcockatrice/utility/qt_utils.h>
#include <libcockatrice/utility/string_limits.h>
#include <qnamespace.h>

class QModelIndex;
class QWidget;

DlgCreateToken::DlgCreateToken(const QStringList &_predefinedTokens, QWidget *parent)
    : QDialog(parent), predefinedTokens(_predefinedTokens)
{
    pic = new TokenPreviewWidget();
    pic->setObjectName("pic");

    nameLabel = new QLabel(tr("&Name:"));
    nameEdit = new QLineEdit(tr("Token"));
    nameEdit->setMaxLength(MAX_NAME_LENGTH);
    QTimer::singleShot(100, this, [=, this]() {
        nameEdit->selectAll();
        nameEdit->setFocus();
    });

    connect(nameEdit, &QLineEdit::textChanged, this, &DlgCreateToken::updateSearch);
    nameLabel->setBuddy(nameEdit);

    colorLabel = new QLabel(tr("C&olor:"));
    colorEdit = new QComboBox;
    colorEdit->addItem(tr("white"), QChar('w'));
    colorEdit->addItem(tr("blue"), QChar('u'));
    colorEdit->addItem(tr("black"), QChar('b'));
    colorEdit->addItem(tr("red"), QChar('r'));
    colorEdit->addItem(tr("green"), QChar('g'));
    colorEdit->addItem(tr("multicolor"), QChar('m'));
    colorEdit->addItem(tr("colorless"), QChar());
    colorLabel->setBuddy(colorEdit);

    ptLabel = new QLabel(tr("&P/T:"));
    ptEdit = new QLineEdit;
    ptEdit->setMaxLength(MAX_NAME_LENGTH);
    ptLabel->setBuddy(ptEdit);

    annotationLabel = new QLabel(tr("&Annotation:"));
    annotationEdit = new QLineEdit;
    annotationEdit->setMaxLength(MAX_NAME_LENGTH);
    annotationLabel->setBuddy(annotationEdit);

    destroyCheckBox = new QCheckBox(tr("&Destroy token when it leaves the table"));
    destroyCheckBox->setChecked(true);

    faceDownCheckBox = new QCheckBox(tr("Create face-down (Only hides name)"));
    connect(faceDownCheckBox, &QCheckBox::toggled, this, &DlgCreateToken::faceDownCheckBoxToggled);

    auto *grid = new QGridLayout;
    grid->addWidget(nameLabel, 0, 0);
    grid->addWidget(nameEdit, 0, 1);
    grid->addWidget(colorLabel, 1, 0);
    grid->addWidget(colorEdit, 1, 1);
    grid->addWidget(ptLabel, 2, 0);
    grid->addWidget(ptEdit, 2, 1);
    grid->addWidget(annotationLabel, 3, 0);
    grid->addWidget(annotationEdit, 3, 1);
    grid->addWidget(destroyCheckBox, 4, 0, 1, 2);
    grid->addWidget(faceDownCheckBox, 5, 0, 1, 2);

    auto *tokenDataGroupBox = new QGroupBox(tr("Token data"));
    tokenDataGroupBox->setLayout(grid);

    cardDatabaseModel = new CardDatabaseModel(CardDatabaseManager::getInstance(), false, this);
    cardDatabaseDisplayModel = new TokenDisplayModel(this);
    cardDatabaseDisplayModel->setSourceModel(cardDatabaseModel);

    const auto applyCardSearchLanguage = [this]() {
        const CardsDisplaySettings &cardsDisplay = SettingsCache::instance().cardsDisplay();
        cardDatabaseDisplayModel->setSearchLanguage(CardSearchLanguage{
            cardsDisplay.getCardLang(), static_cast<SearchLanguageMode>(cardsDisplay.getCardSearchLanguage())});
    };
    applyCardSearchLanguage();
    connect(&SettingsCache::instance().cardsDisplay(), &CardsDisplaySettings::cardLangChanged, this,
            applyCardSearchLanguage);
    connect(&SettingsCache::instance().cardsDisplay(), &CardsDisplaySettings::cardSearchLanguageChanged, this,
            applyCardSearchLanguage);

    chooseTokenFromAllRadioButton = new QRadioButton(tr("Show &all tokens"));
    connect(chooseTokenFromAllRadioButton, &QRadioButton::toggled, this, &DlgCreateToken::actChooseTokenFromAll);
    chooseTokenFromDeckRadioButton = new QRadioButton(tr("Show tokens from this &deck"));
    connect(chooseTokenFromDeckRadioButton, &QRadioButton::toggled, this, &DlgCreateToken::actChooseTokenFromDeck);

    QByteArray deckHeaderState = SettingsCache::instance().layouts().getDeckEditorDbHeaderState();
    chooseTokenView = new QTreeView;
    chooseTokenView->setModel(cardDatabaseDisplayModel);
    chooseTokenView->setUniformRowHeights(true);
    chooseTokenView->setRootIsDecorated(false);
    chooseTokenView->setAlternatingRowColors(true);
    chooseTokenView->setSortingEnabled(true);
    chooseTokenView->sortByColumn(0, Qt::AscendingOrder);
    chooseTokenView->resizeColumnToContents(0);
    chooseTokenView->setWordWrap(true);

    if (!deckHeaderState.isNull()) {
        chooseTokenView->header()->restoreState(deckHeaderState);
    }

    chooseTokenView->header()->setStretchLastSection(false);
    chooseTokenView->header()->hideSection(1);                                         // Sets
    chooseTokenView->header()->hideSection(2);                                         // Mana Cost
    chooseTokenView->header()->setSectionResizeMode(5, QHeaderView::ResizeToContents); // Color(s)
    connect(chooseTokenView->selectionModel(), &QItemSelectionModel::currentRowChanged, this,
            &DlgCreateToken::tokenSelectionChanged);
    connect(chooseTokenView, &QTreeView::doubleClicked, this, &DlgCreateToken::actOk);

    if (predefinedTokens.isEmpty()) {
        chooseTokenFromAllRadioButton->setChecked(true);
        chooseTokenFromDeckRadioButton->setDisabled(true); // No tokens in deck = no need for option
    } else {
        chooseTokenFromDeckRadioButton->setChecked(true);
        cardDatabaseDisplayModel->setCardNameSet(QSet<QString>(predefinedTokens.begin(), predefinedTokens.end()));
    }

    auto *tokenChoosePage = new QWidget;
    tokenChoosePage->setObjectName("tokenChoosePage");
    auto *tokenChooseLayout = QtUtils::makeLayout<QVBoxLayout>(tokenChoosePage);
    tokenChooseLayout->addWidget(chooseTokenFromAllRadioButton);
    tokenChooseLayout->addWidget(chooseTokenFromDeckRadioButton);
    tokenChooseLayout->addWidget(chooseTokenView);

    auto *printingsPage = new QWidget;
    printingsPage->setObjectName("tokenPrintingsPage");
    auto *printingsLayout = QtUtils::makeLayout<QVBoxLayout>(printingsPage);
    printingSelector = new PrintingSelector(printingsPage, &printingSelectorHost);
    printingSelector->setObjectName("tokenPrintingSelector");
    printingsLayout->addWidget(printingSelector);

    connect(printingSelector, &PrintingSelector::printingSelected, this, [this](const ExactCard &card) {
        explicitProviderId = card.getPrinting().getUuid();
        explicitProviderName = card.getName();
        updatePreview();
    });

    tokenSourceTabs = new QTabWidget;
    tokenSourceTabs->setObjectName("tokenSourceTabs");
    tokenSourceTabs->addTab(tokenChoosePage, tr("&Tokens"));
    tokenSourceTabs->addTab(printingsPage, tr("&Printings"));

    auto *hbox = new QGridLayout;
    hbox->addWidget(pic, 0, 0, 1, 1);
    hbox->addWidget(tokenDataGroupBox, 1, 0, 1, 1);
    hbox->addWidget(tokenSourceTabs, 0, 1, 2, 1);
    hbox->setColumnStretch(1, 1);

    auto *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    connect(buttonBox, &QDialogButtonBox::accepted, this, &DlgCreateToken::actOk);
    connect(buttonBox, &QDialogButtonBox::rejected, this, &DlgCreateToken::actReject);

    auto *mainLayout = new QVBoxLayout;
    mainLayout->addLayout(hbox);
    mainLayout->addWidget(buttonBox);
    setLayout(mainLayout);

    setWindowTitle(tr("Create token"));

    connect(nameEdit, &QLineEdit::textChanged, this, &DlgCreateToken::syncPrintingsToToken);
    connect(nameEdit, &QLineEdit::textChanged, this, &DlgCreateToken::updatePreview);
    connect(colorEdit, qOverload<int>(&QComboBox::currentIndexChanged), this, &DlgCreateToken::updatePreview);
    connect(ptEdit, &QLineEdit::textChanged, this, &DlgCreateToken::updatePreview);
    connect(annotationEdit, &QLineEdit::textChanged, this, &DlgCreateToken::updatePreview);
    syncPrintingsToToken();
    updatePreview();

    resize(900, 650);
    restoreGeometry(SettingsCache::instance().layouts().getTokenDialogGeometry());
}

void DlgCreateToken::closeEvent(QCloseEvent *event)
{
    event->accept();
    SettingsCache::instance().layouts().setTokenDialogGeometry(saveGeometry());
}

void DlgCreateToken::faceDownCheckBoxToggled(bool checked)
{
    // Keep the face-up draft visible while choosing what to create. Only the
    // outgoing command applies face-down color/P/T restrictions.
    colorEdit->setEnabled(!checked);
    ptEdit->setEnabled(!checked);
    if (checked) {
        ptEdit->clearFocus();
    }
    updatePreview();
}

void DlgCreateToken::tokenSelectionChanged(const QModelIndex &current, const QModelIndex & /*previous*/)
{
    const QModelIndex realIndex = cardDatabaseDisplayModel->mapToSource(current);

    CardInfoPtr cardInfo;

    if (realIndex.isValid()) {
        cardInfo = cardDatabaseModel->getCard(realIndex.row());
    }

    if (cardInfo) {
        const QSignalBlocker colorBlocker(colorEdit);
        const QSignalBlocker ptBlocker(ptEdit);
        const QSignalBlocker annotationBlocker(annotationEdit);
        updateSearchFieldWithoutUpdatingFilter(cardInfo->getName());
        const QChar cardColor = cardInfo->getColorChar();
        colorEdit->setCurrentIndex(colorEdit->findData(cardColor, Qt::UserRole, Qt::MatchFixedString));
        ptEdit->setText(cardInfo->getPowTough());
        if (SettingsCache::instance().userInterface().getAnnotateTokens()) {
            annotationEdit->setText(cardInfo->getText());
        }
    }

    // Filtering, changing the deck/all scope, or reloading the database can
    // invalidate the current row. None of these actions discard the token draft.
    syncPrintingsToToken();
    updatePreview();
}

void DlgCreateToken::syncPrintingsToToken()
{
    const CardInfoPtr cardInfo = CardDatabaseManager::query()->lookupCardByName(nameEdit->text());

    if (!cardInfo) {
        explicitProviderId.clear();
        explicitProviderName.clear();
    } else if (!explicitProviderId.isEmpty() && explicitProviderName != cardInfo->getName()) {
        // A pick belongs to the token name it was made for.
        explicitProviderId.clear();
        explicitProviderName.clear();
    }

    if (!cardInfo || cardInfo->getSets().empty()) {
        printingSelector->setCard(nullptr);
        printingSelector->setSelectedProviderId(QString());
        printingSelector->setPlaceholderText(tr("This token has no available printings."));
        return;
    }

    printingSelector->setPlaceholderText(QString());
    printingSelector->setCard(cardInfo);

    const QString providerId =
        explicitProviderId.isEmpty()
            ? SettingsCache::instance().cardOverrides().getCardPreferenceOverride(cardInfo->getName())
            : explicitProviderId;
    printingSelector->setSelectedProviderId(providerId);
}

void DlgCreateToken::updateSearchFieldWithoutUpdatingFilter(const QString &newValue) const
{
    const QSignalBlocker blocker(nameEdit);
    nameEdit->setText(newValue);
}

void DlgCreateToken::updatePreview()
{
    pic->setToken(tokenDraft());
}

void DlgCreateToken::updateSearch(const QString &search)
{
    cardDatabaseDisplayModel->setCardName(search);
}

void DlgCreateToken::actChooseTokenFromAll(bool checked)
{
    if (checked) {
        cardDatabaseDisplayModel->setCardNameSet(QSet<QString>());
    }
}

void DlgCreateToken::actChooseTokenFromDeck(bool checked)
{
    if (checked) {
        cardDatabaseDisplayModel->setCardNameSet(QSet<QString>(predefinedTokens.begin(), predefinedTokens.end()));
    }
}

void DlgCreateToken::actOk()
{
    SettingsCache::instance().layouts().setTokenDialogGeometry(saveGeometry());
    accept();
}

void DlgCreateToken::actReject()
{
    SettingsCache::instance().layouts().setTokenDialogGeometry(saveGeometry());
    reject();
}

TokenInfo DlgCreateToken::tokenDraft() const
{
    // Keep an explicit pick only while it still belongs to the current token.
    QString providerId = explicitProviderId;
    if (!providerId.isEmpty()) {
        const CardInfoPtr pickedCard = CardDatabaseManager::query()->lookupCardByName(nameEdit->text());
        if (!pickedCard || pickedCard->getName() != explicitProviderName) {
            providerId.clear();
        }
    }
    if (providerId.isEmpty()) {
        providerId = SettingsCache::instance().cardOverrides().getCardPreferenceOverride(nameEdit->text());
    }

    TokenInfo token = {.name = nameEdit->text(),
                       .color = colorEdit->itemData(colorEdit->currentIndex()).toString(),
                       .pt = ptEdit->text(),
                       .annotation = annotationEdit->text(),
                       .destroy = destroyCheckBox->isChecked(),
                       .faceDown = faceDownCheckBox->isChecked(),
                       .providerId = providerId};

    // Match the normalization applied when the player creates the token, so
    // manually typed aliases and the default P/T preview the actual result.
    const ExactCard correctedCard =
        CardDatabaseManager::query()->guessCard(CardRef{.name = token.name, .providerId = token.providerId});
    if (correctedCard) {
        token.name = correctedCard.getName();
        if (token.pt.isEmpty()) {
            token.pt = correctedCard.getInfo().getPowTough();
        }
    }
    return token;
}

TokenInfo DlgCreateToken::getTokenInfo() const
{
    TokenInfo token = tokenDraft();
    if (token.faceDown) {
        token.color = QString(QChar());
        token.pt.clear();
    }
    return token;
}