// SPDX-License-Identifier: BSD-3-Clause
// SPDX-FileCopyrightText: 2020-2023 The Monero Project

#include "ReceiveWidget.h"
#include "ui_ReceiveWidget.h"

#include <QMenu>
#include <QMessageBox>

#include "dialog/PaymentRequestDialog.h"
#include "dialog/QrCodeDialog.h"
#include "utils/config.h"
#include "utils/Icons.h"
#include "utils/Utils.h"

ReceiveWidget::ReceiveWidget(Wallet *wallet, QWidget *parent)
        : QWidget(parent)
        , ui(new Ui::ReceiveWidget)
        , m_wallet(wallet)
{
    ui->setupUi(this);

    m_model = m_wallet->subaddressModel();
    m_proxyModel = new SubaddressProxyModel(this, m_wallet->subaddress());
    m_proxyModel->setSourceModel(m_model);

    ui->addresses->setModel(m_proxyModel);
    ui->addresses->setColumnHidden(SubaddressModel::isUsed, true);
    ui->addresses->header()->setSectionResizeMode(SubaddressModel::Index, QHeaderView::ResizeToContents);
    ui->addresses->header()->setSectionResizeMode(SubaddressModel::Address, QHeaderView::ResizeToContents);
    ui->addresses->header()->setSectionResizeMode(SubaddressModel::Label, QHeaderView::Stretch);

    connect(ui->addresses->selectionModel(), &QItemSelectionModel::currentChanged, [=](QModelIndex current, QModelIndex prev){
        this->updateQrCode();
    });
    connect(m_model, &SubaddressModel::modelReset, [this](){
        this->updateQrCode();
    });

    ui->qrCode->setCursor(Qt::PointingHandCursor);

    // header context menu
    ui->addresses->header()->setContextMenuPolicy(Qt::CustomContextMenu);
    m_headerMenu = new QMenu(this);
    auto subMenu = new QMenu(this);
    subMenu->setTitle("Columns");
    
    this->addOption(m_headerMenu, "Show used addresses", Config::showUsedAddresses, [this](bool show){
        m_proxyModel->invalidate();
    });
    this->addOption(m_headerMenu, "Show hidden addresses", Config::showHiddenAddresses, [this](bool show){
        m_proxyModel->invalidate();
    });
    this->addOption(m_headerMenu, "Show full addresses", Config::showFullAddresses, [this](bool show){
        m_proxyModel->invalidate();
    });
    this->addOption(m_headerMenu, "Show change address", Config::showChangeAddresses, [this](bool show){
        m_proxyModel->invalidate();
    });
    
    m_headerMenu->addMenu(subMenu);
    this->addOption(subMenu, "Show index", Config::showAddressIndex, [this](bool show){
        ui->addresses->setColumnHidden(0, !show);
    });
    this->addOption(subMenu, "Show labels", Config::showAddressLabels, [this](bool show){
        ui->addresses->setColumnHidden(2, !show);
    });

    connect(ui->addresses->header(), &QHeaderView::customContextMenuRequested, this, &ReceiveWidget::showHeaderMenu);
    ui->toolBtn_options->setMenu(m_headerMenu);

    // context menu
    ui->addresses->setContextMenuPolicy(Qt::CustomContextMenu);
    m_showTransactionsAction = new QAction("Show transactions");
    connect(m_showTransactionsAction, &QAction::triggered, this, &ReceiveWidget::onShowTransactions);
    connect(ui->addresses, &QTreeView::customContextMenuRequested, this, &ReceiveWidget::showContextMenu);

    connect(ui->btn_generateSubaddress, &QPushButton::clicked, this, &ReceiveWidget::generateSubaddress);

    connect(ui->qrCode, &ClickableLabel::clicked, this, &ReceiveWidget::showQrCodeDialog);
    connect(ui->search, &QLineEdit::textChanged, this, &ReceiveWidget::setSearchFilter);

    connect(ui->btn_createPaymentRequest, &QPushButton::clicked, this, &ReceiveWidget::createPaymentRequest);
}

void ReceiveWidget::addOption(QMenu *menu, const QString &text, Config::ConfigKey key, const std::function<void(bool show)>& func) {
    // QMenu takes ownership of the returned QAction.
    QAction *action = menu->addAction(text, func);
    action->setCheckable(true);
    bool toggled = conf()->get(key).toBool();
    action->setChecked(toggled);
    func(toggled);
    connect(action, &QAction::toggled, [key](bool toggled){
        conf()->set(key, toggled);
    });
}

void ReceiveWidget::setSearchbarVisible(bool visible) {
    ui->frame_search->setVisible(visible);
}

void ReceiveWidget::focusSearchbar() {
    ui->search->setFocusPolicy(Qt::StrongFocus);
    ui->search->setFocus();
}

void ReceiveWidget::copyAddress() {
    QModelIndex index = ui->addresses->currentIndex();
    Utils::copyColumn(&index, SubaddressModel::Address);
}

void ReceiveWidget::copyLabel() {
    QModelIndex index = ui->addresses->currentIndex();
    Utils::copyColumn(&index, SubaddressModel::Label);
}

void ReceiveWidget::editLabel() {
    QModelIndex index = ui->addresses->currentIndex().siblingAtColumn(m_model->ModelColumn::Label);
    ui->addresses->setCurrentIndex(index);
    ui->addresses->edit(index);
}

void ReceiveWidget::showContextMenu(const QPoint &point) {
    SubaddressRow* row = this->currentEntry();
    if (!row) return;

    auto *menu = new QMenu(ui->addresses);

    menu->addAction("Copy address", this, &ReceiveWidget::copyAddress);
    menu->addAction("Copy label", this, &ReceiveWidget::copyLabel);
    menu->addAction("Edit label", this, &ReceiveWidget::editLabel);

    if (row->isUsed()) {
        menu->addAction(m_showTransactionsAction);
    }

    QAction *actionPin = menu->addAction("Pin address", [this](bool toggled){
        SubaddressRow* row = this->currentEntry();
        if (!row) return;
        
        QString address = row->getAddress();
        m_wallet->subaddress()->setPinned(address, toggled);
        m_proxyModel->invalidate();
    });
    actionPin->setCheckable(true);
    actionPin->setChecked(row->isPinned());

    QAction *actionHide = menu->addAction("Hide address", [this](bool toggled){
        SubaddressRow* row = this->currentEntry();
        if (!row) return;
        
        QString address = row->getAddress();
        m_wallet->subaddress()->setHidden(address, toggled);
        m_proxyModel->invalidate();
    });
    actionHide->setCheckable(true);
    actionHide->setChecked(row->isHidden());

    if (m_wallet->isHwBacked()) {
        menu->addAction("Show on device", this, &ReceiveWidget::showOnDevice);
    }

    menu->popup(ui->addresses->viewport()->mapToGlobal(point));
}

void ReceiveWidget::createPaymentRequest() {
    QModelIndex index = ui->addresses->currentIndex();
    if (!index.isValid()) {
        return;
    }

    QString address = index.model()->data(index.siblingAtColumn(SubaddressModel::Address), Qt::UserRole).toString();

    PaymentRequestDialog dialog{this, m_wallet, address};
    dialog.exec();
}

void ReceiveWidget::onShowTransactions() {
    QModelIndex index = ui->addresses->currentIndex();
    if (!index.isValid()) {
        return;
    }

    QString address = index.model()->data(index.siblingAtColumn(SubaddressModel::Address), Qt::UserRole).toString();
    emit showTransactions(address);
}

void ReceiveWidget::setSearchFilter(const QString &filter) {
    m_proxyModel->setSearchFilter(filter);
}

void ReceiveWidget::showHeaderMenu(const QPoint& position)
{
    Q_UNUSED(position)
    m_headerMenu->exec(QCursor::pos());
}

void ReceiveWidget::showOnDevice() {
    SubaddressRow* row = this->currentEntry();
    if (!row) return;
    m_wallet->deviceShowAddressAsync(m_wallet->currentSubaddressAccount(), row->getRow(), "");
}

void ReceiveWidget::generateSubaddress() {
    bool r = m_wallet->subaddress()->addRow(m_wallet->currentSubaddressAccount(), "");
    if (!r) {
        Utils::showError(this, "Failed to generate subaddress", m_wallet->subaddress()->getError());
    }
}

void ReceiveWidget::updateQrCode(){
    QModelIndex index = ui->addresses->currentIndex();
    if (!index.isValid()) {
        ui->qrCode->clear();
        ui->btn_createPaymentRequest->hide();
        return;
    }

    QString address = index.model()->data(index.siblingAtColumn(SubaddressModel::Address), Qt::UserRole).toString();
    const QrCode qrc(address, QrCode::Version::AUTO, QrCode::ErrorCorrectionLevel::MEDIUM);

    int width = ui->qrCode->width() - 4;
    if (qrc.isValid()) {
        ui->qrCode->setPixmap(qrc.toPixmap(1).scaled(width, width, Qt::KeepAspectRatio));
        ui->btn_createPaymentRequest->show();
    }
}

void ReceiveWidget::showQrCodeDialog() {
    QModelIndex index = ui->addresses->currentIndex();
    if (!index.isValid()) {
        return;
    }
    QString address = index.model()->data(index.siblingAtColumn(SubaddressModel::Address), Qt::UserRole).toString();
    QrCode qr(address, QrCode::Version::AUTO, QrCode::ErrorCorrectionLevel::HIGH);
    QrCodeDialog dialog{this, &qr, "Address"};
    dialog.exec();
}

SubaddressRow* ReceiveWidget::currentEntry() {
    QModelIndexList list = ui->addresses->selectionModel()->selectedRows();
    if (list.size() == 1) {
        return m_model->entryFromIndex(m_proxyModel->mapToSource(list.first()));
    } else {
        return nullptr;
    }
}

ReceiveWidget::~ReceiveWidget() = default;