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** Copyright (C) 2017 The Qt Company Ltd.
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** included in the packaging of this file. Please review the following
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#include "androidsdkmanagerwidget.h"

#include "ui_androidsdkmanagerwidget.h"
#include "androidconfigurations.h"
#include "androidsdkmanager.h"
#include "androidsdkmodel.h"

#include "utils/runextensions.h"
#include "utils/outputformatter.h"
#include "utils/runextensions.h"
#include "utils/qtcassert.h"
#include "utils/utilsicons.h"

#include <QDialogButtonBox>
#include <QLabel>
#include <QLineEdit>
#include <QLoggingCategory>
#include <QMessageBox>
#include <QProcess>
#include <QSortFilterProxyModel>

namespace {
Q_LOGGING_CATEGORY(androidSdkMgrUiLog, "qtc.android.sdkManagerUi")
}

namespace Android {
namespace Internal {

using namespace std::placeholders;

class OptionsDialog : public QDialog
{
public:
    OptionsDialog(AndroidSdkManager *sdkManager, const QStringList &args,
                  QWidget *parent = nullptr);
    ~OptionsDialog();

    QStringList sdkManagerArguments() const;

private:
    QPlainTextEdit *argumentDetailsEdit;
    QLineEdit *argumentsEdit;
    QFuture<QString> m_optionsFuture;
};

class PackageFilterModel : public QSortFilterProxyModel
{
public:
    PackageFilterModel(AndroidSdkModel* sdkModel);

    void setAcceptedPackageState(AndroidSdkPackage::PackageState state);
    bool filterAcceptsRow(int source_row, const QModelIndex &sourceParent) const override;

private:
    AndroidSdkPackage::PackageState m_packageState =  AndroidSdkPackage::AnyValidState;
};

AndroidSdkManagerWidget::AndroidSdkManagerWidget(AndroidConfig &config,
                                                 AndroidSdkManager *sdkManager, QWidget *parent) :
    QWidget(parent),
    m_androidConfig(config),
    m_sdkManager(sdkManager),
    m_sdkModel(new AndroidSdkModel(m_sdkManager, this)),
    m_ui(new Ui::AndroidSdkManagerWidget)
{
    QTC_CHECK(sdkManager);
    m_ui->setupUi(this);
    m_ui->warningLabel->setElideMode(Qt::ElideRight);
    m_ui->warningIconLabel->setPixmap(Utils::Icons::WARNING.pixmap());
    m_ui->viewStack->setCurrentWidget(m_ui->packagesStack);

    m_formatter = new Utils::OutputFormatter;
    m_formatter->setPlainTextEdit(m_ui->outputEdit);

    connect(m_sdkModel, &AndroidSdkModel::dataChanged, [this]() {
        if (m_ui->viewStack->currentWidget() == m_ui->packagesStack)
            m_ui->applySelectionButton->setEnabled(!m_sdkModel->userSelection().isEmpty());
    });

    connect(m_sdkModel, &AndroidSdkModel::modelAboutToBeReset, [this]() {
        m_ui->applySelectionButton->setEnabled(false);
        m_ui->expandCheck->setChecked(false);
        cancelPendingOperations();
        switchView(PackageListing);
    });

    auto proxyModel = new PackageFilterModel(m_sdkModel);
    m_ui->packagesView->setModel(proxyModel);
    m_ui->packagesView->header()->setSectionResizeMode(AndroidSdkModel::packageNameColumn,
                                                       QHeaderView::ResizeToContents);
    m_ui->packagesView->header()->setSectionResizeMode(AndroidSdkModel::apiLevelColumn,
                                                       QHeaderView::ResizeToContents);
    m_ui->packagesView->header()->setSectionResizeMode(AndroidSdkModel::packageRevisionColumn,
                                                       QHeaderView::ResizeToContents);
    connect(m_ui->expandCheck, &QCheckBox::stateChanged, [this](int state) {
       if (state == Qt::Checked)
           m_ui->packagesView->expandAll();
       else
           m_ui->packagesView->collapseAll();
    });
    connect(m_ui->updateInstalledButton, &QPushButton::clicked,
            this, &AndroidSdkManagerWidget::onUpdatePackages);
    connect(m_ui->showAllRadio, &QRadioButton::toggled, [this, proxyModel](bool checked) {
        if (checked) {
            proxyModel->setAcceptedPackageState(AndroidSdkPackage::AnyValidState);
            m_sdkModel->resetSelection();
        }
    });
    connect(m_ui->showInstalledRadio, &QRadioButton::toggled, [this, proxyModel](bool checked) {
        if (checked) {
            proxyModel->setAcceptedPackageState(AndroidSdkPackage::Installed);
            m_sdkModel->resetSelection();
        }
    });
    connect(m_ui->showAvailableRadio, &QRadioButton::toggled, [this, proxyModel](bool checked) {
        if (checked) {
            proxyModel->setAcceptedPackageState(AndroidSdkPackage::Available);
            m_sdkModel->resetSelection();
        }
    });

    connect(m_ui->applySelectionButton, &QPushButton::clicked,
            this, &AndroidSdkManagerWidget::onApplyButton);
    connect(m_ui->cancelButton, &QPushButton::clicked, this,
            &AndroidSdkManagerWidget::onCancel);
    connect(m_ui->nativeSdkManagerButton, &QPushButton::clicked,
            this, &AndroidSdkManagerWidget::onNativeSdkManager);
    connect(m_ui->optionsButton, &QPushButton::clicked,
            this, &AndroidSdkManagerWidget::onSdkManagerOptions);
}

AndroidSdkManagerWidget::~AndroidSdkManagerWidget()
{
    if (m_currentOperation)
        delete m_currentOperation;
    cancelPendingOperations();
    delete m_formatter;
    delete m_ui;
}

void AndroidSdkManagerWidget::setSdkManagerControlsEnabled(bool enable)
{
    m_ui->packagesTypeGroup->setEnabled(enable);
    m_ui->expandCheck->setVisible(enable);
    m_ui->warningIconLabel->setVisible(!enable);
    m_ui->warningLabel->setVisible(!enable);
    m_ui->packagesView->setEnabled(enable);
    m_ui->updateInstalledButton->setEnabled(enable);
    m_ui->optionsButton->setEnabled(enable);
}

void AndroidSdkManagerWidget::onApplyButton()
{
    QTC_ASSERT(currentView() == PackageListing, return);

    if (m_sdkManager->isBusy()) {
        m_formatter->appendMessage(tr("\nSDK Manager is busy."), Utils::StdErrFormat);
        return;
    }

    const QList<const AndroidSdkPackage *> packagesToUpdate = m_sdkModel->userSelection();
    if (packagesToUpdate.isEmpty())
        return;

    QStringList installPackages, uninstallPackages, installSdkPaths, uninstallSdkPaths;
    for (auto package : packagesToUpdate) {
        QString str = QString("   %1").arg(package->descriptionText());
        if (package->state() == AndroidSdkPackage::Installed) {
            uninstallSdkPaths << package->sdkStylePath();
            uninstallPackages << str;
        } else {
            installSdkPaths << package->sdkStylePath();
            installPackages << str;
        }
    }

    QMessageBox messageDlg(QMessageBox::Information, tr("Android SDK Changes"),
                           tr("%n Android SDK packages shall be updated.",
                              "", packagesToUpdate.count()),
                           QMessageBox::Ok | QMessageBox::Cancel, this);

    QString details;
    if (!uninstallPackages.isEmpty())
        details = tr("[Packages to be uninstalled:]\n").append(uninstallPackages.join("\n"));

    if (!installPackages.isEmpty()) {
        if (!uninstallPackages.isEmpty())
            details.append("\n\n");
        details.append("[Packages to be installed:]\n").append(installPackages.join("\n"));
    }
    messageDlg.setDetailedText(details);
    if (messageDlg.exec() == QMessageBox::Cancel)
        return;

    // User agreed with the selection. Begin packages install/uninstall
    emit updatingSdk();
    switchView(Operations);
    m_formatter->appendMessage(tr("Updating selected packages...\n"),
                               Utils::NormalMessageFormat);
    m_formatter->appendMessage(tr("Closing the %1 dialog will cancel the running and scheduled SDK "
                                  "operations.\n").arg(Utils::HostOsInfo::isMacHost() ?
                                                           tr("preferences") : tr("options")),
                               Utils::LogMessageFormat);

    addPackageFuture(m_sdkManager->update(installSdkPaths, uninstallSdkPaths));
}

void AndroidSdkManagerWidget::onUpdatePackages()
{
    if (m_sdkManager->isBusy()) {
        m_formatter->appendMessage(tr("\nSDK Manager is busy."), Utils::StdErrFormat);
        return;
    }
    switchView(Operations);
    m_formatter->appendMessage(tr("Updating installed packages\n"), Utils::NormalMessageFormat);
    addPackageFuture(m_sdkManager->updateAll());
}

void AndroidSdkManagerWidget::onCancel()
{
    cancelPendingOperations();
}

void AndroidSdkManagerWidget::onNativeSdkManager()
{
    if (m_androidConfig.useNativeUiTools()) {
        QProcess::startDetached(m_androidConfig.androidToolPath().toString());
    } else {
        QMessageBox::warning(this, tr("Native SDK Manager Not Available"),
                             tr("SDK manager UI tool is not available in the installed SDK tools"
                                "(version %1). Use the command line tool \"sdkmanager\" for "
                                "advanced SDK management.")
                             .arg(m_androidConfig.sdkToolsVersion().toString()));
    }
}

void AndroidSdkManagerWidget::onOperationResult(int index)
{
    QTC_ASSERT(m_currentOperation, return);
    auto breakLine = [](const QString &line) { return line.endsWith("\n") ? line : line + "\n";};
    AndroidSdkManager::OperationOutput result = m_currentOperation->resultAt(index);
    if (!result.stdError.isEmpty())
        m_formatter->appendMessage(breakLine(result.stdError), Utils::StdErrFormat);
    if (!result.stdOutput.isEmpty())
        m_formatter->appendMessage(breakLine(result.stdOutput), Utils::StdOutFormat);
}

void AndroidSdkManagerWidget::addPackageFuture(const QFuture<AndroidSdkManager::OperationOutput>
                                               &future)
{
    QTC_ASSERT(!m_currentOperation, return);
    if (!future.isFinished() || !future.isCanceled()) {
        m_currentOperation = new QFutureWatcher<AndroidSdkManager::OperationOutput>;
        m_currentOperation->setFuture(future);
        connect(m_currentOperation,
                &QFutureWatcher<AndroidSdkManager::OperationOutput>::resultReadyAt,
                this, &AndroidSdkManagerWidget::onOperationResult);
        connect(m_currentOperation, &QFutureWatcher<AndroidSdkManager::OperationOutput>::finished,
                this, &AndroidSdkManagerWidget::packageFutureFinished);
        connect(m_currentOperation,
                &QFutureWatcher<AndroidSdkManager::OperationOutput>::progressValueChanged,
                [this](int value) {
            m_ui->operationProgress->setValue(value);
        });
    } else {
        qCDebug(androidSdkMgrUiLog) << "Operation canceled/finished before adding to the queue";
        if (m_sdkManager->isBusy()) {
            m_formatter->appendMessage(tr("SDK Manager is busy. Operation cancelled."),
                                       Utils::StdErrFormat);
        }
        notifyOperationFinished();
    }
}

void AndroidSdkManagerWidget::notifyOperationFinished()
{
    if (!m_currentOperation || m_currentOperation->isFinished()) {
        QMessageBox::information(this, tr("Android SDK Changes"),
                                 tr("Android SDK operations finished."), QMessageBox::Ok);
        switchView(PackageListing);
        m_ui->operationProgress->setValue(0);
        m_sdkManager->reloadPackages(true);
        emit updatingSdkFinished();
    }
}

void AndroidSdkManagerWidget::packageFutureFinished()
{
    if (!m_currentOperation) {
        qCDebug(androidSdkMgrUiLog) << "Invalid State. No active operation.";
        return;
    } else if (m_currentOperation->isCanceled()) {
        m_formatter->appendMessage(tr("Operation cancelled.\n"), Utils::StdErrFormat);
    }
    m_ui->operationProgress->setValue(100);
    m_currentOperation->deleteLater();
    m_currentOperation = nullptr;
    notifyOperationFinished();
}

void AndroidSdkManagerWidget::cancelPendingOperations()
{
    if (!m_sdkManager->isBusy()) {
        m_formatter->appendMessage(tr("\nNo pending operations to cancel...\n"),
                                   Utils::NormalMessageFormat);
        return;
    }
    m_formatter->appendMessage(tr("\nCancelling pending operations...\n"),
                               Utils::NormalMessageFormat);
    m_sdkManager->cancelOperatons();
}

void AndroidSdkManagerWidget::switchView(AndroidSdkManagerWidget::View view)
{
    m_ui->viewStack->setCurrentWidget(view == PackageListing ?
                                          m_ui->packagesStack : m_ui->outputStack);
    m_formatter->clear();
    m_ui->outputEdit->clear();
}

AndroidSdkManagerWidget::View AndroidSdkManagerWidget::currentView() const
{
    return m_ui->viewStack->currentWidget() == m_ui->packagesStack ? PackageListing : Operations;
}

void AndroidSdkManagerWidget::onSdkManagerOptions()
{
    OptionsDialog dlg(m_sdkManager, m_androidConfig.sdkManagerToolArgs(), this);
    if (dlg.exec() == QDialog::Accepted) {
        QStringList arguments = dlg.sdkManagerArguments();
        if (arguments != m_androidConfig.sdkManagerToolArgs()) {
            m_androidConfig.setSdkManagerToolArgs(arguments);
            m_sdkManager->reloadPackages(true);
        }
    }
}

PackageFilterModel::PackageFilterModel(AndroidSdkModel *sdkModel) :
    QSortFilterProxyModel(sdkModel)
{
    setSourceModel(sdkModel);
}

void PackageFilterModel::setAcceptedPackageState(AndroidSdkPackage::PackageState state)
{
    m_packageState = state;
    invalidateFilter();
}

bool PackageFilterModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    QModelIndex srcIndex = sourceModel()->index(sourceRow, 0, sourceParent);
    if (!srcIndex.isValid())
        return false;

    auto packageState = [](const QModelIndex& i) {
      return (AndroidSdkPackage::PackageState)i.data(AndroidSdkModel::PackageStateRole).toInt();
    };

    bool showTopLevel = false;
    if (!sourceParent.isValid()) {
        // Top Level items
        for (int row = 0; row < sourceModel()->rowCount(srcIndex); ++row) {
            QModelIndex childIndex = sourceModel()->index(row, 0, srcIndex);
            if (m_packageState & packageState(childIndex)) {
                showTopLevel = true;
                break;
            }
        }
    }

    return showTopLevel || (packageState(srcIndex) & m_packageState);
}

OptionsDialog::OptionsDialog(AndroidSdkManager *sdkManager, const QStringList &args,
                             QWidget *parent) : QDialog(parent)
{
    QTC_CHECK(sdkManager);
    resize(800, 480);
    setWindowTitle(tr("SDK Manager Arguments"));

    argumentDetailsEdit = new QPlainTextEdit(this);
    argumentDetailsEdit->setReadOnly(true);

    auto populateOptions = [this](const QString& options) {
        if (options.isEmpty()) {
            argumentDetailsEdit->setPlainText(tr("Cannot load available arguments for "
                                                 "\"sdkmanager\" command."));
        } else {
            argumentDetailsEdit->setPlainText(options);
        }
    };
    m_optionsFuture = sdkManager->availableArguments();
    Utils::onResultReady(m_optionsFuture, populateOptions);

    auto dialogButtons = new QDialogButtonBox(this);
    dialogButtons->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);
    connect(dialogButtons, &QDialogButtonBox::accepted, this, &OptionsDialog::accept);
    connect(dialogButtons, &QDialogButtonBox::rejected, this, &OptionsDialog::reject);

    argumentsEdit = new QLineEdit(this);
    argumentsEdit->setText(args.join(" "));

    auto gridLayout = new QGridLayout(this);
    gridLayout->addWidget(new QLabel(tr("SDK manager arguments:"), this), 0, 0, 1, 1);
    gridLayout->addWidget(argumentsEdit, 0, 1, 1, 1);
    gridLayout->addWidget(new QLabel(tr("Available arguments:"), this), 1, 0, 1, 2);
    gridLayout->addWidget(argumentDetailsEdit, 2, 0, 1, 2);
    gridLayout->addWidget(dialogButtons, 3, 0, 1, 2);
}

OptionsDialog::~OptionsDialog()
{
    m_optionsFuture.cancel();
    m_optionsFuture.waitForFinished();
}

QStringList OptionsDialog::sdkManagerArguments() const
{
    QString userInput = argumentsEdit->text().simplified();
    return userInput.isEmpty() ? QStringList() : userInput.split(' ');
}

} // namespace Internal
} // namespace Android