/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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****************************************************************************/

#include "kit.h"

#include "devicesupport/idevicefactory.h"
#include "kitinformation.h"
#include "kitmanager.h"
#include "ioutputparser.h"
#include "osparser.h"
#include "projectexplorerconstants.h"

#include <utils/algorithm.h>
#include <utils/fileutils.h>
#include <utils/icon.h>
#include <utils/macroexpander.h>
#include <utils/optional.h>
#include <utils/qtcassert.h>
#include <utils/stringutils.h>
#include <utils/utilsicons.h>

#include <QApplication>
#include <QFileInfo>
#include <QIcon>
#include <QStyle>
#include <QTextStream>
#include <QUuid>

#include <numeric>

using namespace Core;
using namespace Utils;

const char ID_KEY[] = "PE.Profile.Id";
const char DISPLAYNAME_KEY[] = "PE.Profile.Name";
const char FILESYSTEMFRIENDLYNAME_KEY[] = "PE.Profile.FileSystemFriendlyName";
const char AUTODETECTED_KEY[] = "PE.Profile.AutoDetected";
const char AUTODETECTIONSOURCE_KEY[] = "PE.Profile.AutoDetectionSource";
const char SDK_PROVIDED_KEY[] = "PE.Profile.SDK";
const char DATA_KEY[] = "PE.Profile.Data";
const char ICON_KEY[] = "PE.Profile.Icon";
const char DEVICE_TYPE_FOR_ICON_KEY[] = "PE.Profile.DeviceTypeForIcon";
const char MUTABLE_INFO_KEY[] = "PE.Profile.MutableInfo";
const char STICKY_INFO_KEY[] = "PE.Profile.StickyInfo";
const char IRRELEVANT_ASPECTS_KEY[] = "PE.Kit.IrrelevantAspects";

namespace ProjectExplorer {
namespace Internal {

// -------------------------------------------------------------------------
// KitPrivate
// -------------------------------------------------------------------------


class KitPrivate
{
    Q_DECLARE_TR_FUNCTIONS(ProjectExplorer::Kit)

public:
    KitPrivate(Id id, Kit *kit) :
        m_id(id)
    {
        if (!id.isValid())
            m_id = Id::fromString(QUuid::createUuid().toString());

        m_unexpandedDisplayName = QCoreApplication::translate("ProjectExplorer::Kit", "Unnamed");

        m_macroExpander.setDisplayName(tr("Kit"));
        m_macroExpander.setAccumulating(true);
        m_macroExpander.registerVariable("Kit:Id", tr("Kit ID"),
            [kit] { return kit->id().toString(); });
        m_macroExpander.registerVariable("Kit:FileSystemName", tr("Kit filesystem-friendly name"),
            [kit] { return kit->fileSystemFriendlyName(); });
        for (KitAspect *aspect : KitManager::kitAspects())
            aspect->addToMacroExpander(kit, &m_macroExpander);

        // This provides the same global fall back as the global expander
        // without relying on the currentKit() discovery process there.
        m_macroExpander.registerVariable(Constants::VAR_CURRENTKIT_NAME,
            tr("The name of the currently active kit."),
            [kit] { return kit->displayName(); },
            false);
        m_macroExpander.registerVariable(Constants::VAR_CURRENTKIT_FILESYSTEMNAME,
            tr("The name of the currently active kit in a filesystem-friendly version."),
            [kit] { return kit->fileSystemFriendlyName(); },
            false);
        m_macroExpander.registerVariable(Constants::VAR_CURRENTKIT_ID,
            tr("The id of the currently active kit."),
            [kit] { return kit->id().toString(); },
            false);
    }

    QString m_unexpandedDisplayName;
    QString m_fileSystemFriendlyName;
    QString m_autoDetectionSource;
    Id m_id;
    int m_nestedBlockingLevel = 0;
    bool m_autodetected = false;
    bool m_sdkProvided = false;
    bool m_hasError = false;
    bool m_hasWarning = false;
    bool m_hasValidityInfo = false;
    bool m_mustNotify = false;
    QIcon m_cachedIcon;
    FilePath m_iconPath;
    Id m_deviceTypeForIcon;

    QHash<Id, QVariant> m_data;
    QSet<Id> m_sticky;
    QSet<Id> m_mutable;
    optional<QSet<Id>> m_irrelevantAspects;
    MacroExpander m_macroExpander;
};

} // namespace Internal

// -------------------------------------------------------------------------
// Kit:
// -------------------------------------------------------------------------

Kit::Kit(Id id) :
    d(std::make_unique<Internal::KitPrivate>(id, this))
{
}

Kit::Kit(const QVariantMap &data) :
    d(std::make_unique<Internal::KitPrivate>(Id(), this))
{
    d->m_id = Id::fromSetting(data.value(QLatin1String(ID_KEY)));

    d->m_autodetected = data.value(QLatin1String(AUTODETECTED_KEY)).toBool();
    d->m_autoDetectionSource = data.value(QLatin1String(AUTODETECTIONSOURCE_KEY)).toString();

    // if we don't have that setting assume that autodetected implies sdk
    QVariant value = data.value(QLatin1String(SDK_PROVIDED_KEY));
    if (value.isValid())
        d->m_sdkProvided = value.toBool();
    else
        d->m_sdkProvided = d->m_autodetected;

    d->m_unexpandedDisplayName = data.value(QLatin1String(DISPLAYNAME_KEY),
                                            d->m_unexpandedDisplayName).toString();
    d->m_fileSystemFriendlyName = data.value(QLatin1String(FILESYSTEMFRIENDLYNAME_KEY)).toString();
    d->m_iconPath = FilePath::fromString(data.value(QLatin1String(ICON_KEY),
                                                    d->m_iconPath.toString()).toString());
    d->m_deviceTypeForIcon = Id::fromSetting(data.value(DEVICE_TYPE_FOR_ICON_KEY));
    const auto it = data.constFind(IRRELEVANT_ASPECTS_KEY);
    if (it != data.constEnd())
        d->m_irrelevantAspects = transform<QSet<Id>>(it.value().toList(), &Id::fromSetting);

    QVariantMap extra = data.value(QLatin1String(DATA_KEY)).toMap();
    d->m_data.clear(); // remove default values
    const QVariantMap::ConstIterator cend = extra.constEnd();
    for (QVariantMap::ConstIterator it = extra.constBegin(); it != cend; ++it)
        d->m_data.insert(Id::fromString(it.key()), it.value());

    QStringList mutableInfoList = data.value(QLatin1String(MUTABLE_INFO_KEY)).toStringList();
    foreach (const QString &mutableInfo, mutableInfoList)
        d->m_mutable.insert(Id::fromString(mutableInfo));

    QStringList stickyInfoList = data.value(QLatin1String(STICKY_INFO_KEY)).toStringList();
    foreach (const QString &stickyInfo, stickyInfoList)
        d->m_sticky.insert(Id::fromString(stickyInfo));
}

Kit::~Kit() = default;

void Kit::blockNotification()
{
    ++d->m_nestedBlockingLevel;
}

void Kit::unblockNotification()
{
    --d->m_nestedBlockingLevel;
    if (d->m_nestedBlockingLevel > 0)
        return;
    if (d->m_mustNotify)
        kitUpdated();
}

void Kit::copyKitCommon(Kit *target, const Kit *source)
{
    target->d->m_data = source->d->m_data;
    target->d->m_iconPath = source->d->m_iconPath;
    target->d->m_deviceTypeForIcon = source->d->m_deviceTypeForIcon;
    target->d->m_cachedIcon = source->d->m_cachedIcon;
    target->d->m_sticky = source->d->m_sticky;
    target->d->m_mutable = source->d->m_mutable;
    target->d->m_irrelevantAspects = source->d->m_irrelevantAspects;
}

Kit *Kit::clone(bool keepName) const
{
    auto k = new Kit;
    copyKitCommon(k, this);
    if (keepName)
        k->d->m_unexpandedDisplayName = d->m_unexpandedDisplayName;
    else
        k->d->m_unexpandedDisplayName = newKitName(KitManager::kits());
    k->d->m_autodetected = false;
    // Do not clone m_fileSystemFriendlyName, needs to be unique
    k->d->m_hasError = d->m_hasError;  // TODO: Is this intentionally not done for copyFrom()?
    return k;
}

void Kit::copyFrom(const Kit *k)
{
    copyKitCommon(this, k);
    d->m_autodetected = k->d->m_autodetected;
    d->m_autoDetectionSource = k->d->m_autoDetectionSource;
    d->m_unexpandedDisplayName = k->d->m_unexpandedDisplayName;
    d->m_fileSystemFriendlyName = k->d->m_fileSystemFriendlyName;
}

bool Kit::isValid() const
{
    if (!d->m_id.isValid())
        return false;

    if (!d->m_hasValidityInfo)
        validate();

    return !d->m_hasError;
}

bool Kit::hasWarning() const
{
    if (!d->m_hasValidityInfo)
        validate();

    return d->m_hasWarning;
}

Tasks Kit::validate() const
{
    Tasks result;
    for (KitAspect *aspect : KitManager::kitAspects())
        result.append(aspect->validate(this));

    d->m_hasError = containsType(result, Task::TaskType::Error);
    d->m_hasWarning = containsType(result, Task::TaskType::Warning);

    Utils::sort(result);
    d->m_hasValidityInfo = true;
    return result;
}

void Kit::fix()
{
    KitGuard g(this);
    for (KitAspect *aspect : KitManager::kitAspects())
        aspect->fix(this);
}

void Kit::setup()
{
    KitGuard g(this);
    const QList<KitAspect *> aspects = KitManager::kitAspects();
    for (KitAspect * const aspect : aspects)
        aspect->setup(this);
}

void Kit::upgrade()
{
    KitGuard g(this);
    // Process the KitAspects in reverse order: They may only be based on other information
    // lower in the stack.
    for (KitAspect *aspect : KitManager::kitAspects())
        aspect->upgrade(this);
}

QString Kit::unexpandedDisplayName() const
{
    return d->m_unexpandedDisplayName;
}

QString Kit::displayName() const
{
    return d->m_macroExpander.expand(d->m_unexpandedDisplayName);
}

void Kit::setUnexpandedDisplayName(const QString &name)
{
    if (d->m_unexpandedDisplayName == name)
        return;

    d->m_unexpandedDisplayName = name;
    kitUpdated();
}

void Kit::setCustomFileSystemFriendlyName(const QString &fileSystemFriendlyName)
{
    d->m_fileSystemFriendlyName = fileSystemFriendlyName;
}

QString Kit::customFileSystemFriendlyName() const
{
    return d->m_fileSystemFriendlyName;
}

QString Kit::fileSystemFriendlyName() const
{
    QString name = customFileSystemFriendlyName();
    if (name.isEmpty())
        name = FileUtils::qmakeFriendlyName(displayName());
    foreach (Kit *i, KitManager::kits()) {
        if (i == this)
            continue;
        if (name == FileUtils::qmakeFriendlyName(i->displayName())) {
            // append part of the kit id: That should be unique enough;-)
            // Leading { will be turned into _ which should be fine.
            name = FileUtils::qmakeFriendlyName(name + QLatin1Char('_') + (id().toString().left(7)));
            break;
        }
    }
    return name;
}

bool Kit::isAutoDetected() const
{
    return d->m_autodetected;
}

QString Kit::autoDetectionSource() const
{
    return d->m_autoDetectionSource;
}

bool Kit::isSdkProvided() const
{
    return d->m_sdkProvided;
}

Id Kit::id() const
{
    return d->m_id;
}

int Kit::weight() const
{
    const QList<KitAspect *> &aspects = KitManager::kitAspects();
    return std::accumulate(aspects.begin(), aspects.end(), 0,
                           [this](int sum, const KitAspect *aspect) {
        return sum + aspect->weight(this);
    });
}

static QIcon iconForDeviceType(Core::Id deviceType)
{
    const IDeviceFactory *factory = Utils::findOrDefault(IDeviceFactory::allDeviceFactories(),
        [&deviceType](const IDeviceFactory *factory) {
            return factory->deviceType() == deviceType;
        });
    return factory ? factory->icon() : QIcon();
}

QIcon Kit::icon() const
{
    if (!d->m_cachedIcon.isNull())
        return d->m_cachedIcon;

    if (!d->m_deviceTypeForIcon.isValid() && !d->m_iconPath.isEmpty() && d->m_iconPath.exists()) {
        d->m_cachedIcon = QIcon(d->m_iconPath.toString());
        return d->m_cachedIcon;
    }

    const Core::Id deviceType = d->m_deviceTypeForIcon.isValid()
            ? d->m_deviceTypeForIcon : DeviceTypeKitAspect::deviceTypeId(this);
    const QIcon deviceTypeIcon = iconForDeviceType(deviceType);
    if (!deviceTypeIcon.isNull()) {
        d->m_cachedIcon = deviceTypeIcon;
        return d->m_cachedIcon;
    }

    d->m_cachedIcon = iconForDeviceType(Constants::DESKTOP_DEVICE_TYPE);
    return d->m_cachedIcon;
}

QIcon Kit::displayIcon() const
{
    QIcon result = icon();
    if (hasWarning()) {
         static const QIcon warningIcon(Utils::Icons::WARNING.icon());
         result = warningIcon;
    }
    if (!isValid()) {
        static const QIcon errorIcon(Utils::Icons::CRITICAL.icon());
        result = errorIcon;
    }
    return result;
}

FilePath Kit::iconPath() const
{
    return d->m_iconPath;
}

void Kit::setIconPath(const FilePath &path)
{
    if (d->m_iconPath == path)
        return;
    d->m_deviceTypeForIcon = Id();
    d->m_iconPath = path;
    kitUpdated();
}

void Kit::setDeviceTypeForIcon(Id deviceType)
{
    if (d->m_deviceTypeForIcon == deviceType)
        return;
    d->m_iconPath.clear();
    d->m_deviceTypeForIcon = deviceType;
    kitUpdated();
}

QList<Id> Kit::allKeys() const
{
    return d->m_data.keys();
}

QVariant Kit::value(Id key, const QVariant &unset) const
{
    return d->m_data.value(key, unset);
}

bool Kit::hasValue(Id key) const
{
    return d->m_data.contains(key);
}

void Kit::setValue(Id key, const QVariant &value)
{
    if (d->m_data.value(key) == value)
        return;
    d->m_data.insert(key, value);
    kitUpdated();
}

/// \internal
void Kit::setValueSilently(Id key, const QVariant &value)
{
    if (d->m_data.value(key) == value)
        return;
    d->m_data.insert(key, value);
}

/// \internal
void Kit::removeKeySilently(Id key)
{
    if (!d->m_data.contains(key))
        return;
    d->m_data.remove(key);
    d->m_sticky.remove(key);
    d->m_mutable.remove(key);
}


void Kit::removeKey(Id key)
{
    if (!d->m_data.contains(key))
        return;
    d->m_data.remove(key);
    d->m_sticky.remove(key);
    d->m_mutable.remove(key);
    kitUpdated();
}

bool Kit::isSticky(Id id) const
{
    return d->m_sticky.contains(id);
}

bool Kit::isDataEqual(const Kit *other) const
{
    return d->m_data == other->d->m_data;
}

bool Kit::isEqual(const Kit *other) const
{
    return isDataEqual(other)
            && d->m_iconPath == other->d->m_iconPath
            && d->m_deviceTypeForIcon == other->d->m_deviceTypeForIcon
            && d->m_unexpandedDisplayName == other->d->m_unexpandedDisplayName
            && d->m_fileSystemFriendlyName == other->d->m_fileSystemFriendlyName
            && d->m_irrelevantAspects == other->d->m_irrelevantAspects
            && d->m_mutable == other->d->m_mutable;
}

QVariantMap Kit::toMap() const
{
    using IdVariantConstIt = QHash<Id, QVariant>::ConstIterator;

    QVariantMap data;
    data.insert(QLatin1String(ID_KEY), QString::fromLatin1(d->m_id.name()));
    data.insert(QLatin1String(DISPLAYNAME_KEY), d->m_unexpandedDisplayName);
    data.insert(QLatin1String(AUTODETECTED_KEY), d->m_autodetected);
    if (!d->m_fileSystemFriendlyName.isEmpty())
        data.insert(QLatin1String(FILESYSTEMFRIENDLYNAME_KEY), d->m_fileSystemFriendlyName);
    data.insert(QLatin1String(AUTODETECTIONSOURCE_KEY), d->m_autoDetectionSource);
    data.insert(QLatin1String(SDK_PROVIDED_KEY), d->m_sdkProvided);
    data.insert(QLatin1String(ICON_KEY), d->m_iconPath.toString());
    data.insert(DEVICE_TYPE_FOR_ICON_KEY, d->m_deviceTypeForIcon.toSetting());

    QStringList mutableInfo;
    foreach (Id id, d->m_mutable)
        mutableInfo << id.toString();
    data.insert(QLatin1String(MUTABLE_INFO_KEY), mutableInfo);

    QStringList stickyInfo;
    foreach (Id id, d->m_sticky)
        stickyInfo << id.toString();
    data.insert(QLatin1String(STICKY_INFO_KEY), stickyInfo);

    if (d->m_irrelevantAspects) {
        data.insert(IRRELEVANT_ASPECTS_KEY, transform<QVariantList>(d->m_irrelevantAspects.value(),
                                                                    &Id::toSetting));
    }

    QVariantMap extra;

    const IdVariantConstIt cend = d->m_data.constEnd();
    for (IdVariantConstIt it = d->m_data.constBegin(); it != cend; ++it)
        extra.insert(QString::fromLatin1(it.key().name().constData()), it.value());
    data.insert(QLatin1String(DATA_KEY), extra);

    return data;
}

void Kit::addToEnvironment(Environment &env) const
{
    for (KitAspect *aspect : KitManager::kitAspects())
        aspect->addToEnvironment(this, env);
}

IOutputParser *Kit::createOutputParser() const
{
    auto first = new OsParser;
    for (KitAspect *aspect : KitManager::kitAspects())
        first->appendOutputParser(aspect->createOutputParser(this));
    return first;
}

QString Kit::toHtml(const Tasks &additional) const
{
    QString result;
    QTextStream str(&result);
    str << "<html><body>";
    str << "<h3>" << displayName() << "</h3>";

    if (!isValid() || hasWarning() || !additional.isEmpty())
        str << "<p>" << ProjectExplorer::toHtml(additional + validate()) << "</p>";

    str << "<table>";
    for (KitAspect *aspect : KitManager::kitAspects()) {
        const KitAspect::ItemList list = aspect->toUserOutput(this);
        for (const KitAspect::Item &j : list) {
            QString contents = j.second;
            if (contents.count() > 256) {
                int pos = contents.lastIndexOf("<br>", 256);
                if (pos < 0) // no linebreak, so cut early.
                    pos = 80;
                contents = contents.mid(0, pos);
                contents += "&lt;...&gt;";
            }
            str << "<tr><td><b>" << j.first << ":</b></td><td>" << contents << "</td></tr>";
        }
    }
    str << "</table></body></html>";
    return result;
}

void Kit::setAutoDetected(bool detected)
{
    if (d->m_autodetected == detected)
        return;
    d->m_autodetected = detected;
    kitUpdated();
}

void Kit::setAutoDetectionSource(const QString &autoDetectionSource)
{
    if (d->m_autoDetectionSource == autoDetectionSource)
        return;
    d->m_autoDetectionSource = autoDetectionSource;
    kitUpdated();
}

void Kit::setSdkProvided(bool sdkProvided)
{
    if (d->m_sdkProvided == sdkProvided)
        return;
    d->m_sdkProvided = sdkProvided;
    kitUpdated();
}

void Kit::makeSticky()
{
    for (KitAspect *aspect : KitManager::kitAspects()) {
        if (hasValue(aspect->id()))
            setSticky(aspect->id(), true);
    }
}

void Kit::setSticky(Id id, bool b)
{
    if (d->m_sticky.contains(id) == b)
        return;

    if (b)
        d->m_sticky.insert(id);
    else
        d->m_sticky.remove(id);
    kitUpdated();
}

void Kit::makeUnSticky()
{
    if (d->m_sticky.isEmpty())
        return;
    d->m_sticky.clear();
    kitUpdated();
}

void Kit::setMutable(Id id, bool b)
{
    if (d->m_mutable.contains(id) == b)
        return;

    if (b)
        d->m_mutable.insert(id);
    else
        d->m_mutable.remove(id);
    kitUpdated();
}

bool Kit::isMutable(Id id) const
{
    return d->m_mutable.contains(id);
}

void Kit::setIrrelevantAspects(const QSet<Id> &irrelevant)
{
    d->m_irrelevantAspects = irrelevant;
}

QSet<Id> Kit::irrelevantAspects() const
{
    return d->m_irrelevantAspects.value_or(KitManager::irrelevantAspects());
}

QSet<Id> Kit::supportedPlatforms() const
{
    QSet<Id> platforms;
    for (const KitAspect *aspect : KitManager::kitAspects()) {
        const QSet<Id> ip = aspect->supportedPlatforms(this);
        if (ip.isEmpty())
            continue;
        if (platforms.isEmpty())
            platforms = ip;
        else
            platforms.intersect(ip);
    }
    return platforms;
}

QSet<Id> Kit::availableFeatures() const
{
    QSet<Id> features;
    for (const KitAspect *aspect : KitManager::kitAspects())
        features |= aspect->availableFeatures(this);
    return features;
}

bool Kit::hasFeatures(const QSet<Id> &features) const
{
    return availableFeatures().contains(features);
}

MacroExpander *Kit::macroExpander() const
{
    return &d->m_macroExpander;
}

QString Kit::newKitName(const QList<Kit *> &allKits) const
{
    return newKitName(unexpandedDisplayName(), allKits);
}

QString Kit::newKitName(const QString &name, const QList<Kit *> &allKits)
{
    const QString baseName = name.isEmpty()
            ? QCoreApplication::translate("ProjectExplorer::Kit", "Unnamed")
            : QCoreApplication::translate("ProjectExplorer::Kit", "Clone of %1").arg(name);
    return Utils::makeUniquelyNumbered(baseName, transform(allKits, &Kit::unexpandedDisplayName));
}

void Kit::kitUpdated()
{
    if (d->m_nestedBlockingLevel > 0) {
        d->m_mustNotify = true;
        return;
    }
    d->m_hasValidityInfo = false;
    d->m_cachedIcon = QIcon();
    KitManager::notifyAboutUpdate(this);
    d->m_mustNotify = false;
}

} // namespace ProjectExplorer