GH-3095 New FTB platform support

Models are based on the models from my go-modpacksch library.

License:
========
The MIT License (MIT)

Copyright (c) Jamie Mansfield <https://www.jamiemansfield.me/>
Copyright (c) contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

7 files changed, 627 insertions, 0 deletions

diff --git a/application/CMakeLists.txt b/application/CMakeLists.txt
index 1d5b8e04..802789a2 100644
--- a/application/CMakeLists.txt
+++ b/application/CMakeLists.txt
@@ -124,6 +124,10 @@ SET(MULTIMC_SOURCES
     # GUI - platform pages
     pages/modplatform/VanillaPage.cpp
     pages/modplatform/VanillaPage.h
+    pages/modplatform/ftb/FtbModel.cpp
+    pages/modplatform/ftb/FtbModel.h
+    pages/modplatform/ftb/FtbPage.cpp
+    pages/modplatform/ftb/FtbPage.h
     pages/modplatform/legacy_ftb/Page.cpp
     pages/modplatform/legacy_ftb/Page.h
     pages/modplatform/legacy_ftb/ListModel.h
@@ -250,6 +254,7 @@ SET(MULTIMC_UIS
 
     # Platform pages
     pages/modplatform/VanillaPage.ui
+    pages/modplatform/ftb/FtbPage.ui
     pages/modplatform/legacy_ftb/Page.ui
     pages/modplatform/twitch/TwitchPage.ui
     pages/modplatform/ImportPage.ui
diff --git a/application/dialogs/NewInstanceDialog.cpp b/application/dialogs/NewInstanceDialog.cpp
index 511f991e..d8abdbd4 100644
--- a/application/dialogs/NewInstanceDialog.cpp
+++ b/application/dialogs/NewInstanceDialog.cpp
@@ -34,6 +34,7 @@
 
 #include "widgets/PageContainer.h"
 #include <pages/modplatform/VanillaPage.h>
+#include <pages/modplatform/ftb/FtbPage.h>
 #include <pages/modplatform/legacy_ftb/Page.h>
 #include <pages/modplatform/twitch/TwitchPage.h>
 #include <pages/modplatform/ImportPage.h>
@@ -125,6 +126,7 @@ QList<BasePage *> NewInstanceDialog::getPages()
     {
         new VanillaPage(this),
         importPage,
+        new FtbPage(this),
         new LegacyFTB::Page(this),
         twitchPage
     };
diff --git a/application/pages/modplatform/ftb/FtbModel.cpp b/application/pages/modplatform/ftb/FtbModel.cpp
new file mode 100644
index 00000000..ecdcb00b
--- /dev/null
+++ b/application/pages/modplatform/ftb/FtbModel.cpp
@@ -0,0 +1,302 @@
+#include "FtbModel.h"
+
+#include "BuildConfig.h"
+#include "Env.h"
+#include "MultiMC.h"
+#include "Json.h"
+
+#include <QPainter>
+
+namespace Ftb {
+
+ListModel::ListModel(QObject *parent) : QAbstractListModel(parent)
+{
+}
+
+ListModel::~ListModel()
+{
+}
+
+int ListModel::rowCount(const QModelIndex &parent) const
+{
+    return modpacks.size();
+}
+
+int ListModel::columnCount(const QModelIndex &parent) const
+{
+    return 1;
+}
+
+QVariant ListModel::data(const QModelIndex &index, int role) const
+{
+    int pos = index.row();
+    if(pos >= modpacks.size() || pos < 0 || !index.isValid())
+    {
+        return QString("INVALID INDEX %1").arg(pos);
+    }
+
+    ModpacksCH::Modpack pack = modpacks.at(pos);
+    if(role == Qt::DisplayRole)
+    {
+        return pack.name;
+    }
+    else if (role == Qt::ToolTipRole)
+    {
+        return pack.synopsis;
+    }
+    else if(role == Qt::DecorationRole)
+    {
+        QIcon placeholder = MMC->getThemedIcon("screenshot-placeholder");
+
+        auto iter = m_logoMap.find(pack.name);
+        if (iter != m_logoMap.end()) {
+            auto & logo = *iter;
+            if(!logo.result.isNull()) {
+                return logo.result;
+            }
+            return placeholder;
+        }
+
+        for(auto art : pack.art) {
+            if(art.type == "square") {
+                ((ListModel *)this)->requestLogo(pack.name, art.url);
+            }
+        }
+        return placeholder;
+    }
+    else if(role == Qt::UserRole)
+    {
+        QVariant v;
+        v.setValue(pack);
+        return v;
+    }
+
+    return QVariant();
+}
+
+void ListModel::performSearch()
+{
+    auto *netJob = new NetJob("Ftb::Search");
+    QString searchUrl;
+    if(currentSearchTerm.isEmpty()) {
+        searchUrl = BuildConfig.MODPACKSCH_API_BASE_URL + "public/modpack/popular/plays/100";
+    }
+    else {
+        searchUrl = QString(BuildConfig.MODPACKSCH_API_BASE_URL + "public/modpack/search/25?term=%1")
+            .arg(currentSearchTerm);
+    }
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), &response));
+    jobPtr = netJob;
+    jobPtr->start();
+    QObject::connect(netJob, &NetJob::succeeded, this, &ListModel::searchRequestFinished);
+    QObject::connect(netJob, &NetJob::failed, this, &ListModel::searchRequestFailed);
+}
+
+void ListModel::getLogo(const QString &logo, const QString &logoUrl, LogoCallback callback)
+{
+    if(m_logoMap.contains(logo))
+    {
+        callback(ENV.metacache()->resolveEntry("ModpacksCHPacks", QString("logos/%1").arg(logo.section(".", 0, 0)))->getFullPath());
+    }
+    else
+    {
+        requestLogo(logo, logoUrl);
+    }
+}
+
+void ListModel::searchWithTerm(const QString &term)
+{
+    if(currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull()) {
+        return;
+    }
+    currentSearchTerm = term;
+    if(jobPtr) {
+        jobPtr->abort();
+        searchState = ResetRequested;
+        return;
+    }
+    else {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+        searchState = None;
+    }
+    performSearch();
+}
+
+void ListModel::searchRequestFinished()
+{
+    jobPtr.reset();
+    remainingPacks.clear();
+
+    QJsonParseError parse_error;
+    QJsonDocument doc = QJsonDocument::fromJson(response, &parse_error);
+    if(parse_error.error != QJsonParseError::NoError) {
+        qWarning() << "Error while parsing JSON response from FTB at " << parse_error.offset << " reason: " << parse_error.errorString();
+        qWarning() << response;
+        return;
+    }
+
+    auto packs = doc.object().value("packs").toArray();
+    for(auto pack : packs) {
+        auto packId = pack.toInt();
+        remainingPacks.append(packId);
+    }
+
+    if(!remainingPacks.isEmpty()) {
+        currentPack = remainingPacks.at(0);
+        requestPack();
+    }
+}
+
+void ListModel::searchRequestFailed(QString reason)
+{
+    jobPtr.reset();
+    remainingPacks.clear();
+
+    if(searchState == ResetRequested) {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+
+        performSearch();
+    } else {
+        searchState = Finished;
+    }
+}
+
+void ListModel::requestPack()
+{
+    auto *netJob = new NetJob("Ftb::Search");
+    auto searchUrl = QString(BuildConfig.MODPACKSCH_API_BASE_URL + "public/modpack/%1")
+            .arg(currentPack);
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), &response));
+    jobPtr = netJob;
+    jobPtr->start();
+
+    QObject::connect(netJob, &NetJob::succeeded, this, &ListModel::packRequestFinished);
+    QObject::connect(netJob, &NetJob::failed, this, &ListModel::packRequestFailed);
+}
+
+void ListModel::packRequestFinished()
+{
+    jobPtr.reset();
+    remainingPacks.removeOne(currentPack);
+
+    QJsonParseError parse_error;
+    QJsonDocument doc = QJsonDocument::fromJson(response, &parse_error);
+
+    if(parse_error.error != QJsonParseError::NoError) {
+        qWarning() << "Error while parsing JSON response from FTB at " << parse_error.offset << " reason: " << parse_error.errorString();
+        qWarning() << response;
+        return;
+    }
+
+    auto obj = doc.object();
+
+    ModpacksCH::Modpack pack;
+    try
+    {
+        ModpacksCH::loadModpack(pack, obj);
+    }
+    catch (const JSONValidationError &e)
+    {
+        qDebug() << QString::fromUtf8(response);
+        qWarning() << "Error while reading pack manifest from FTB: " << e.cause();
+        return;
+    }
+
+    beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size());
+    modpacks.append(pack);
+    endInsertRows();
+
+    if(!remainingPacks.isEmpty()) {
+        currentPack = remainingPacks.at(0);
+        requestPack();
+    }
+}
+
+void ListModel::packRequestFailed(QString reason)
+{
+    jobPtr.reset();
+    remainingPacks.removeOne(currentPack);
+}
+
+void ListModel::logoLoaded(QString logo, bool stale)
+{
+    auto & logoObj = m_logoMap[logo];
+    logoObj.downloadJob.reset();
+    QString smallPath = logoObj.fullpath + ".small";
+
+    QFileInfo smallInfo(smallPath);
+
+    if(stale || !smallInfo.exists()) {
+        QImage image(logoObj.fullpath);
+        if (image.isNull())
+        {
+            logoObj.failed = true;
+            return;
+        }
+        QImage small;
+        if (image.width() > image.height()) {
+            small = image.scaledToWidth(512).scaledToWidth(256, Qt::SmoothTransformation);
+        }
+        else {
+            small = image.scaledToHeight(512).scaledToHeight(256, Qt::SmoothTransformation);
+        }
+        QPoint offset((256 - small.width()) / 2, (256 - small.height()) / 2);
+        QImage square(QSize(256, 256), QImage::Format_ARGB32);
+        square.fill(Qt::transparent);
+
+        QPainter painter(&square);
+        painter.drawImage(offset, small);
+        painter.end();
+
+        square.save(logoObj.fullpath + ".small", "PNG");
+    }
+
+    logoObj.result = QIcon(logoObj.fullpath + ".small");
+    for(int i = 0; i < modpacks.size(); i++) {
+        if(modpacks[i].name == logo) {
+            emit dataChanged(createIndex(i, 0), createIndex(i, 0), {Qt::DecorationRole});
+        }
+    }
+}
+
+void ListModel::logoFailed(QString logo)
+{
+    m_logoMap[logo].failed = true;
+    m_logoMap[logo].downloadJob.reset();
+}
+
+void ListModel::requestLogo(QString logo, QString url)
+{
+    if(m_logoMap.contains(logo)) {
+        return;
+    }
+
+    MetaEntryPtr entry = ENV.metacache()->resolveEntry("ModpacksCHPacks", QString("logos/%1").arg(logo.section(".", 0, 0)));
+
+    bool stale = entry->isStale();
+
+    NetJob *job = new NetJob(QString("FTB Icon Download %1").arg(logo));
+    job->addNetAction(Net::Download::makeCached(QUrl(url), entry));
+
+    auto fullPath = entry->getFullPath();
+    QObject::connect(job, &NetJob::finished, this, [this, logo, fullPath, stale]
+    {
+        logoLoaded(logo, stale);
+    });
+
+    QObject::connect(job, &NetJob::failed, this, [this, logo]
+    {
+        logoFailed(logo);
+    });
+
+    auto &newLogoEntry = m_logoMap[logo];
+    newLogoEntry.downloadJob = job;
+    newLogoEntry.fullpath = fullPath;
+    job->start();
+}
+
+}
diff --git a/application/pages/modplatform/ftb/FtbModel.h b/application/pages/modplatform/ftb/FtbModel.h
new file mode 100644
index 00000000..b480797f
--- /dev/null
+++ b/application/pages/modplatform/ftb/FtbModel.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <QAbstractListModel>
+
+#include "modplatform/modpacksch/PackManifest.h"
+#include "net/NetJob.h"
+#include <QIcon>
+
+namespace Ftb {
+
+struct Logo {
+    QString fullpath;
+    NetJobPtr downloadJob;
+    QIcon result;
+    bool failed = false;
+};
+
+typedef QMap<QString, Logo> LogoMap;
+typedef std::function<void(QString)> LogoCallback;
+
+class ListModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+public:
+    ListModel(QObject *parent);
+    virtual ~ListModel();
+
+    int rowCount(const QModelIndex &parent) const override;
+    int columnCount(const QModelIndex &parent) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+
+    void getLogo(const QString &logo, const QString &logoUrl, LogoCallback callback);
+    void searchWithTerm(const QString & term);
+
+private slots:
+    void performSearch();
+    void searchRequestFinished();
+    void searchRequestFailed(QString reason);
+
+    void requestPack();
+    void packRequestFinished();
+    void packRequestFailed(QString reason);
+
+    void logoFailed(QString logo);
+    void logoLoaded(QString logo, bool stale);
+
+private:
+    void requestLogo(QString file, QString url);
+
+private:
+    QList<ModpacksCH::Modpack> modpacks;
+    LogoMap m_logoMap;
+
+    QString currentSearchTerm;
+    enum SearchState {
+        None,
+        CanPossiblyFetchMore,
+        ResetRequested,
+        Finished
+    } searchState = None;
+    NetJobPtr jobPtr;
+    int currentPack;
+    QList<int> remainingPacks;
+    QByteArray response;
+};
+
+}
diff --git a/application/pages/modplatform/ftb/FtbPage.cpp b/application/pages/modplatform/ftb/FtbPage.cpp
new file mode 100644
index 00000000..3a09780e
--- /dev/null
+++ b/application/pages/modplatform/ftb/FtbPage.cpp
@@ -0,0 +1,109 @@
+#include "FtbPage.h"
+#include "ui_FtbPage.h"
+
+#include <QKeyEvent>
+
+#include "dialogs/NewInstanceDialog.h"
+#include "modplatform/modpacksch/PackInstallTask.h"
+
+FtbPage::FtbPage(NewInstanceDialog* dialog, QWidget *parent)
+        : QWidget(parent), ui(new Ui::FtbPage), dialog(dialog)
+{
+    ui->setupUi(this);
+    connect(ui->searchButton, &QPushButton::clicked, this, &FtbPage::triggerSearch);
+    ui->searchEdit->installEventFilter(this);
+    model = new Ftb::ListModel(this);
+    ui->packView->setModel(model);
+    connect(ui->packView->selectionModel(), &QItemSelectionModel::currentChanged, this, &FtbPage::onSelectionChanged);
+
+    connect(ui->versionSelectionBox, &QComboBox::currentTextChanged, this, &FtbPage::onVersionSelectionChanged);
+}
+
+FtbPage::~FtbPage()
+{
+    delete ui;
+}
+
+bool FtbPage::eventFilter(QObject* watched, QEvent* event)
+{
+    if (watched == ui->searchEdit && event->type() == QEvent::KeyPress) {
+        QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
+        if (keyEvent->key() == Qt::Key_Return) {
+            triggerSearch();
+            keyEvent->accept();
+            return true;
+        }
+    }
+    return QWidget::eventFilter(watched, event);
+}
+
+bool FtbPage::shouldDisplay() const
+{
+    return true;
+}
+
+void FtbPage::openedImpl()
+{
+    dialog->setSuggestedPack();
+    triggerSearch();
+}
+
+void FtbPage::suggestCurrent()
+{
+    if(isOpened)
+    {
+        dialog->setSuggestedPack(selected.name, new ModpacksCH::PackInstallTask(selected, selectedVersion));
+
+        for(auto art : selected.art) {
+            if(art.type == "square") {
+                QString editedLogoName;
+                editedLogoName = selected.name;
+
+                model->getLogo(selected.name, art.url, [this, editedLogoName](QString logo)
+                {
+                    dialog->setSuggestedIconFromFile(logo + ".small", editedLogoName);
+                });
+            }
+        }
+    }
+}
+
+void FtbPage::triggerSearch()
+{
+    model->searchWithTerm(ui->searchEdit->text());
+}
+
+void FtbPage::onSelectionChanged(QModelIndex first, QModelIndex second)
+{
+    ui->versionSelectionBox->clear();
+
+    if(!first.isValid())
+    {
+        if(isOpened)
+        {
+            dialog->setSuggestedPack();
+        }
+        return;
+    }
+
+    selected = model->data(first, Qt::UserRole).value<ModpacksCH::Modpack>();
+
+    // reverse foreach, so that the newest versions are first
+    for (auto i = selected.versions.size(); i--;) {
+        ui->versionSelectionBox->addItem(selected.versions.at(i).name);
+    }
+
+    suggestCurrent();
+}
+
+void FtbPage::onVersionSelectionChanged(QString data)
+{
+    if(data.isNull() || data.isEmpty())
+    {
+        selectedVersion = "";
+        return;
+    }
+
+    selectedVersion = data;
+    suggestCurrent();
+}
diff --git a/application/pages/modplatform/ftb/FtbPage.h b/application/pages/modplatform/ftb/FtbPage.h
new file mode 100644
index 00000000..80f152c6
--- /dev/null
+++ b/application/pages/modplatform/ftb/FtbPage.h
@@ -0,0 +1,77 @@
+/* Copyright 2013-2019 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "FtbModel.h"
+
+#include <QWidget>
+
+#include "MultiMC.h"
+#include "pages/BasePage.h"
+#include "tasks/Task.h"
+
+namespace Ui
+{
+    class FtbPage;
+}
+
+class NewInstanceDialog;
+
+class FtbPage : public QWidget, public BasePage
+{
+Q_OBJECT
+
+public:
+    explicit FtbPage(NewInstanceDialog* dialog, QWidget *parent = 0);
+    virtual ~FtbPage();
+    virtual QString displayName() const override
+    {
+        return tr("FTB");
+    }
+    virtual QIcon icon() const override
+    {
+        return MMC->getThemedIcon("ftb_logo");
+    }
+    virtual QString id() const override
+    {
+        return "ftb";
+    }
+    virtual QString helpPage() const override
+    {
+        return "FTB-platform";
+    }
+    virtual bool shouldDisplay() const override;
+
+    void openedImpl() override;
+
+    bool eventFilter(QObject * watched, QEvent * event) override;
+
+private:
+    void suggestCurrent();
+
+private slots:
+    void triggerSearch();
+    void onSelectionChanged(QModelIndex first, QModelIndex second);
+    void onVersionSelectionChanged(QString data);
+
+private:
+    Ui::FtbPage *ui = nullptr;
+    NewInstanceDialog* dialog = nullptr;
+    Ftb::ListModel* model = nullptr;
+
+    ModpacksCH::Modpack selected;
+    QString selectedVersion;
+};
diff --git a/application/pages/modplatform/ftb/FtbPage.ui b/application/pages/modplatform/ftb/FtbPage.ui
new file mode 100644
index 00000000..772b0276
--- /dev/null
+++ b/application/pages/modplatform/ftb/FtbPage.ui
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>FtbPage</class>
+ <widget class="QWidget" name="FtbPage">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>875</width>
+    <height>745</height>
+   </rect>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="1" column="0" colspan="2">
+    <widget class="QListView" name="packView">
+     <property name="alternatingRowColors">
+      <bool>true</bool>
+     </property>
+     <property name="iconSize">
+      <size>
+       <width>48</width>
+       <height>48</height>
+      </size>
+     </property>
+     <property name="uniformItemSizes">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="QPushButton" name="searchButton">
+     <property name="text">
+      <string>Search</string>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="0">
+    <widget class="QLineEdit" name="searchEdit"/>
+   </item>
+   <item row="2" column="0" colspan="2">
+    <layout class="QGridLayout" name="gridLayout_4" columnstretch="0,0" rowminimumheight="0" columnminimumwidth="0,0">
+     <item row="0" column="1">
+      <widget class="QComboBox" name="versionSelectionBox"/>
+     </item>
+     <item row="0" column="0">
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Version selected:</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <tabstops>
+  <tabstop>searchEdit</tabstop>
+  <tabstop>searchButton</tabstop>
+  <tabstop>packView</tabstop>
+  <tabstop>versionSelectionBox</tabstop>
+ </tabstops>
+ <resources/>
+ <connections/>
+</ui>