GH-2859 remove twitch page and modpack import from URL

The functionality was broken, beyond repair and an ongoing maintenance
nightmare.

12 files changed, 2 insertions, 522 deletions

diff --git a/api/logic/CMakeLists.txt b/api/logic/CMakeLists.txt
index c6b3e422..995c9d4e 100644
--- a/api/logic/CMakeLists.txt
+++ b/api/logic/CMakeLists.txt
@@ -455,8 +455,6 @@ set(FLAME_SOURCES
     modplatform/flame/PackManifest.cpp
     modplatform/flame/FileResolvingTask.h
     modplatform/flame/FileResolvingTask.cpp
-    modplatform/flame/UrlResolvingTask.h
-    modplatform/flame/UrlResolvingTask.cpp
 )
 
 add_unit_test(Index
diff --git a/api/logic/modplatform/flame/UrlResolvingTask.cpp b/api/logic/modplatform/flame/UrlResolvingTask.cpp
deleted file mode 100644
index 2a96f703..00000000
--- a/api/logic/modplatform/flame/UrlResolvingTask.cpp
+++ /dev/null
@@ -1,175 +0,0 @@
-#include "UrlResolvingTask.h"
-#include <QtXml>
-#include <Json.h>
-
-
-namespace {
-    const char * metabase = "https://cursemeta.dries007.net";
-}
-
-Flame::UrlResolvingTask::UrlResolvingTask(const QString& toProcess)
-    : m_url(toProcess)
-{
-}
-
-void Flame::UrlResolvingTask::executeTask()
-{
-    resolveUrl();
-}
-
-void Flame::UrlResolvingTask::resolveUrl()
-{
-    setStatus(tr("Resolving URL..."));
-    setProgress(0, 1);
-    QUrl actualUrl(m_url);
-    if(actualUrl.host() != "www.curseforge.com") {
-        emitFailed(tr("Not a Twitch URL."));
-        return;
-    }
-    m_dljob.reset(new NetJob("URL resolver"));
-
-    bool weAreDigging = false;
-    needle = QString();
-
-    if(m_url.startsWith("https://")) {
-        if(m_url.endsWith("?client=y")) {
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download?client=y
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download/2697088?client=y
-            m_url.chop(9);
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download/2697088
-        }
-        if(m_url.endsWith("/download")) {
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download -> need to dig inside html...
-            weAreDigging = true;
-            needle = m_url;
-            needle.replace("https://", "twitch://");
-            needle.replace("/download", "/download-client/");
-            m_url.append("?client=y");
-        } else if (m_url.contains("/download/")) {
-            // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download/2697088
-            m_url.replace("/download/", "/download-client/");
-        }
-    }
-    else if(m_url.startsWith("twitch://")) {
-        // twitch://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download-client/2697088
-        m_url.replace(0, 9, "https://");
-        // https://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download-client/2697088
-    }
-    auto dl = Net::Download::makeByteArray(QUrl(m_url), &results);
-    m_dljob->addNetAction(dl);
-    if(weAreDigging) {
-        connect(m_dljob.get(), &NetJob::finished, this, &Flame::UrlResolvingTask::processHTML);
-    } else {
-        connect(m_dljob.get(), &NetJob::finished, this, &Flame::UrlResolvingTask::processCCIP);
-    }
-    m_dljob->start();
-}
-
-void Flame::UrlResolvingTask::processHTML()
-{
-    QString htmlDoc = QString::fromUtf8(results);
-    auto index = htmlDoc.indexOf(needle);
-    if(index < 0) {
-        emitFailed(tr("Couldn't find the needle in the haystack..."));
-        return;
-    }
-    auto indexStart = index;
-    int indexEnd = -1;
-    while((index + 1) < htmlDoc.size() && htmlDoc[index] != '"') {
-        index ++;
-        if(htmlDoc[index] == '"') {
-            indexEnd = index;
-            break;
-        }
-    }
-    if(indexEnd > 0) {
-        QString found = htmlDoc.mid(indexStart, indexEnd - indexStart);
-        qDebug() << "Found needle: " << found;
-        // twitch://www.curseforge.com/minecraft/modpacks/ftb-sky-odyssey/download-client/2697088
-        m_url = found;
-        resolveUrl();
-        return;
-    }
-    emitFailed(tr("Couldn't find the end of the needle in the haystack..."));
-    return;
-}
-
-void Flame::UrlResolvingTask::processCCIP()
-{
-    QDomDocument doc;
-    if (!doc.setContent(results)) {
-        qDebug() << results;
-        emitFailed(tr("Resolving failed."));
-        return;
-    }
-    auto packageNode = doc.namedItem("package");
-    if(!packageNode.isElement()) {
-        emitFailed(tr("Resolving failed: missing package root element."));
-        return;
-    }
-    auto projectNode = packageNode.namedItem("project");
-    if(!projectNode.isElement()) {
-        emitFailed(tr("Resolving failed: missing project element."));
-        return;
-    }
-    auto attribs = projectNode.attributes();
-
-    auto projectIdNode = attribs.namedItem("id");
-    if(!projectIdNode.isAttr()) {
-        emitFailed(tr("Resolving failed: missing id attribute."));
-        return;
-    }
-    auto fileIdNode = attribs.namedItem("file");
-    if(!fileIdNode.isAttr()) {
-        emitFailed(tr("Resolving failed: missing file attribute."));
-        return;
-    }
-
-    auto projectId = projectIdNode.nodeValue();
-    auto fileId = fileIdNode.nodeValue();
-    bool success = true;
-    m_result.projectId = projectId.toInt(&success);
-    if(!success) {
-        emitFailed(tr("Failed to resolve projectId as a number."));
-        return;
-    }
-    m_result.fileId = fileId.toInt(&success);
-    if(!success) {
-        emitFailed(tr("Failed to resolve fileId as a number."));
-        return;
-    }
-    qDebug() << "Resolved" << m_url << "as" << m_result.projectId << "/" << m_result.fileId;
-    resolveIDs();
-}
-
-void Flame::UrlResolvingTask::resolveIDs()
-{
-    setStatus(tr("Resolving mod IDs..."));
-    m_dljob.reset(new NetJob("Mod id resolver"));
-    auto projectIdStr = QString::number(m_result.projectId);
-    auto fileIdStr = QString::number(m_result.fileId);
-    QString metaurl = QString("%1/%2/%3.json").arg(metabase, projectIdStr, fileIdStr);
-    auto dl = Net::Download::makeByteArray(QUrl(metaurl), &results);
-    m_dljob->addNetAction(dl);
-    connect(m_dljob.get(), &NetJob::finished, this, &Flame::UrlResolvingTask::processCursemeta);
-    m_dljob->start();
-}
-
-void Flame::UrlResolvingTask::processCursemeta()
-{
-    try {
-        if(m_result.parseFromBytes(results)) {
-            emitSucceeded();
-            qDebug() << results;
-            return;
-        }
-    } catch (const JSONValidationError &e) {
-
-        qCritical() << "Resolving of" << m_result.projectId << m_result.fileId << "failed because of a parsing error:";
-        qCritical() << e.cause();
-        qCritical() << "JSON:";
-        qCritical() << results;
-    }
-    emitFailed(tr("Failed to resolve the modpack file."));
-}
diff --git a/api/logic/modplatform/flame/UrlResolvingTask.h b/api/logic/modplatform/flame/UrlResolvingTask.h
deleted file mode 100644
index 98b78f67..00000000
--- a/api/logic/modplatform/flame/UrlResolvingTask.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#pragma once
-
-#include "tasks/Task.h"
-#include "net/NetJob.h"
-#include "PackManifest.h"
-
-#include "multimc_logic_export.h"
-
-namespace Flame
-{
-class MULTIMC_LOGIC_EXPORT UrlResolvingTask : public Task
-{
-    Q_OBJECT
-public:
-    explicit UrlResolvingTask(const QString &toProcess);
-    virtual ~UrlResolvingTask() {};
-
-    const Flame::File &getResults() const
-    {
-        return m_result;
-    }
-
-protected:
-    virtual void executeTask() override;
-
-protected slots:
-    void processCCIP();
-    void processHTML();
-    void processCursemeta();
-
-private:
-    void resolveUrl();
-    void resolveIDs();
-
-private: /* data */
-    QString m_url;
-    QString needle;
-    Flame::File m_result;
-    QByteArray results;
-    NetJobPtr m_dljob;
-};
-}
-
diff --git a/application/CMakeLists.txt b/application/CMakeLists.txt
index 0583c451..a0e01ac8 100644
--- a/application/CMakeLists.txt
+++ b/application/CMakeLists.txt
@@ -133,8 +133,6 @@ SET(MULTIMC_SOURCES
     pages/modplatform/legacy_ftb/Page.h
     pages/modplatform/legacy_ftb/ListModel.h
     pages/modplatform/legacy_ftb/ListModel.cpp
-    pages/modplatform/TwitchPage.cpp
-    pages/modplatform/TwitchPage.h
     pages/modplatform/ImportPage.cpp
     pages/modplatform/ImportPage.h
 
@@ -277,7 +275,6 @@ SET(MULTIMC_UIS
 )
 
 set(MULTIMC_QRCS
-    resources/assets/assets.qrc
     resources/backgrounds/backgrounds.qrc
     resources/multimc/multimc.qrc
     resources/pe_dark/pe_dark.qrc
diff --git a/application/dialogs/NewInstanceDialog.cpp b/application/dialogs/NewInstanceDialog.cpp
index c5936953..804340bc 100644
--- a/application/dialogs/NewInstanceDialog.cpp
+++ b/application/dialogs/NewInstanceDialog.cpp
@@ -35,7 +35,6 @@
 #include "widgets/PageContainer.h"
 #include <pages/modplatform/VanillaPage.h>
 #include <pages/modplatform/legacy_ftb/Page.h>
-#include <pages/modplatform/TwitchPage.h>
 #include <pages/modplatform/ImportPage.h>
 
 
@@ -95,14 +94,8 @@ NewInstanceDialog::NewInstanceDialog(const QString & initialGroup, const QString
     if(!url.isEmpty())
     {
         QUrl actualUrl(url);
-        if(actualUrl.host() == "www.curseforge.com") {
-            m_container->selectPage("twitch");
-            twitchPage->setUrl(url);
-        }
-        else {
-            m_container->selectPage("import");
-            importPage->setUrl(url);
-        }
+        m_container->selectPage("import");
+        importPage->setUrl(url);
     }
 
     updateDialogState();
@@ -126,13 +119,11 @@ void NewInstanceDialog::accept()
 QList<BasePage *> NewInstanceDialog::getPages()
 {
     importPage = new ImportPage(this);
-    twitchPage = new TwitchPage(this);
     return
     {
         new VanillaPage(this),
         importPage,
         new LegacyFTB::Page(this),
-        twitchPage
     };
 }
 
diff --git a/application/dialogs/NewInstanceDialog.h b/application/dialogs/NewInstanceDialog.h
index 0b8b2fb8..c86ab73f 100644
--- a/application/dialogs/NewInstanceDialog.h
+++ b/application/dialogs/NewInstanceDialog.h
@@ -29,7 +29,6 @@ class NewInstanceDialog;
 class PageContainer;
 class QDialogButtonBox;
 class ImportPage;
-class TwitchPage;
 
 class NewInstanceDialog : public QDialog, public BasePageProvider
 {
@@ -68,7 +67,6 @@ private:
 
     QString InstIconKey;
     ImportPage *importPage = nullptr;
-    TwitchPage *twitchPage = nullptr;
     std::unique_ptr<InstanceTask> creationTask;
 
     bool importIcon = false;
diff --git a/application/main.cpp b/application/main.cpp
index c871bf1b..b0360c7e 100644
--- a/application/main.cpp
+++ b/application/main.cpp
@@ -43,7 +43,6 @@ int main(int argc, char *argv[])
     {
         Q_INIT_RESOURCE(multimc);
         Q_INIT_RESOURCE(backgrounds);
-        Q_INIT_RESOURCE(assets);
 
         Q_INIT_RESOURCE(pe_dark);
         Q_INIT_RESOURCE(pe_light);
diff --git a/application/pages/modplatform/TwitchPage.cpp b/application/pages/modplatform/TwitchPage.cpp
deleted file mode 100644
index 389e3194..00000000
--- a/application/pages/modplatform/TwitchPage.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-#include "TwitchPage.h"
-#include "ui_TwitchPage.h"
-
-#include "MultiMC.h"
-#include "dialogs/NewInstanceDialog.h"
-#include <InstanceImportTask.h>
-
-TwitchPage::TwitchPage(NewInstanceDialog* dialog, QWidget *parent)
-    : QWidget(parent), ui(new Ui::TwitchPage), dialog(dialog)
-{
-    ui->setupUi(this);
-    connect(ui->checkButton, &QPushButton::clicked, this, &TwitchPage::triggerCheck);
-    connect(ui->twitchLabel, &DropLabel::droppedURLs, [this](QList<QUrl> urls){
-        if(urls.size()) {
-            setUrl(urls[0].toString());
-        }
-    });
-}
-
-TwitchPage::~TwitchPage()
-{
-    delete ui;
-}
-
-bool TwitchPage::shouldDisplay() const
-{
-    return true;
-}
-
-void TwitchPage::openedImpl()
-{
-    dialog->setSuggestedPack();
-}
-
-void TwitchPage::triggerCheck(bool)
-{
-    if(m_modIdResolver) {
-        return;
-    }
-    auto task = new Flame::UrlResolvingTask(ui->lineEdit->text());
-    connect(task, &Task::finished, this, &TwitchPage::checkDone);
-    m_modIdResolver.reset(task);
-    task->start();
-}
-
-void TwitchPage::setUrl(const QString& url)
-{
-    ui->lineEdit->setText(url);
-    triggerCheck(true);
-}
-
-void TwitchPage::checkDone()
-{
-    auto result = m_modIdResolver->getResults();
-    auto formatted = QString("Project %1, File %2").arg(result.projectId).arg(result.fileId);
-    if(result.resolved && result.type == Flame::File::Type::Modpack) {
-        ui->twitchLabel->setText(formatted);
-        QFileInfo fi(result.fileName);
-        dialog->setSuggestedPack(fi.completeBaseName(), new InstanceImportTask(result.url));
-    } else {
-        ui->twitchLabel->setPixmap(QPixmap(QString::fromUtf8(":/assets/deadglitch")));
-        dialog->setSuggestedPack();
-    }
-    m_modIdResolver.reset();
-}
diff --git a/application/pages/modplatform/TwitchPage.h b/application/pages/modplatform/TwitchPage.h
deleted file mode 100644
index 600913cd..00000000
--- a/application/pages/modplatform/TwitchPage.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* 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 <QWidget>
-
-#include "pages/BasePage.h"
-#include <MultiMC.h>
-#include "tasks/Task.h"
-#include "modplatform/flame/UrlResolvingTask.h"
-
-namespace Ui
-{
-class TwitchPage;
-}
-
-class NewInstanceDialog;
-
-class TwitchPage : public QWidget, public BasePage
-{
-    Q_OBJECT
-
-public:
-    explicit TwitchPage(NewInstanceDialog* dialog, QWidget *parent = 0);
-    virtual ~TwitchPage();
-    virtual QString displayName() const override
-    {
-        return tr("Twitch URL");
-    }
-    virtual QIcon icon() const override
-    {
-        return MMC->getThemedIcon("twitch");
-    }
-    virtual QString id() const override
-    {
-        return "twitch";
-    }
-    virtual QString helpPage() const override
-    {
-        return "Twitch-platform";
-    }
-    virtual bool shouldDisplay() const override;
-
-    void openedImpl() override;
-
-    void setUrl(const QString & url);
-
-private slots:
-    void triggerCheck(bool checked);
-    void checkDone();
-
-private:
-    Ui::TwitchPage *ui = nullptr;
-    NewInstanceDialog* dialog = nullptr;
-    shared_qobject_ptr<Flame::UrlResolvingTask> m_modIdResolver;
-};
diff --git a/application/pages/modplatform/TwitchPage.ui b/application/pages/modplatform/TwitchPage.ui
deleted file mode 100644
index 43a775a0..00000000
--- a/application/pages/modplatform/TwitchPage.ui
+++ /dev/null
@@ -1,79 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>TwitchPage</class>
- <widget class="QWidget" name="TwitchPage">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>666</width>
-    <height>424</height>
-   </rect>
-  </property>
-  <layout class="QGridLayout" name="gridLayout">
-   <item row="1" column="0" colspan="3">
-    <widget class="DropLabel" name="twitchLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>40</pointsize>
-      </font>
-     </property>
-     <property name="pixmap">
-      <pixmap resource="../../resources/assets/assets.qrc">:/assets/deadglitch</pixmap>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="2">
-    <widget class="QPushButton" name="checkButton">
-     <property name="text">
-      <string>Check</string>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>Twitch URL:</string>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="1">
-    <widget class="QLineEdit" name="lineEdit"/>
-   </item>
-   <item row="2" column="0" colspan="3">
-    <widget class="QLabel" name="label_2">
-     <property name="text">
-      <string>Drag and drop an Install button from CurseForge into the area above.</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <customwidgets>
-  <customwidget>
-   <class>DropLabel</class>
-   <extends>QLabel</extends>
-   <header>widgets/DropLabel.h</header>
-  </customwidget>
- </customwidgets>
- <tabstops>
-  <tabstop>lineEdit</tabstop>
-  <tabstop>checkButton</tabstop>
- </tabstops>
- <resources>
-  <include location="../../resources/assets/assets.qrc"/>
- </resources>
- <connections/>
-</ui>
diff --git a/application/resources/assets/assets.qrc b/application/resources/assets/assets.qrc
deleted file mode 100644
index 7a916f05..00000000
--- a/application/resources/assets/assets.qrc
+++ /dev/null
@@ -1,6 +0,0 @@
-<!DOCTYPE RCC>
-<RCC version="1.0">
-    <qresource prefix="/assets">
-        <file alias="deadglitch">deadglitch.svg</file>
-    </qresource>
-</RCC>
diff --git a/application/resources/assets/deadglitch.svg b/application/resources/assets/deadglitch.svg
deleted file mode 100644
index 5682b8a3..00000000
--- a/application/resources/assets/deadglitch.svg
+++ /dev/null
@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   class="tw-svg__asset tw-svg__asset--deadglitch tw-svg__asset--inherit"
-   width="92px"
-   height="96px"
-   version="1.1"
-   viewBox="0 0 30 30"
-   x="0px"
-   y="0px"
-   id="svg8"
-   sodipodi:docname="deadglitch.svg"
-   inkscape:version="0.92.2 2405546, 2018-03-11">
-  <metadata
-     id="metadata14">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <defs
-     id="defs12" />
-  <sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1353"
-     inkscape:window-height="828"
-     id="namedview10"
-     showgrid="false"
-     inkscape:zoom="4.9166667"
-     inkscape:cx="44.285787"
-     inkscape:cy="52.833458"
-     inkscape:window-x="2958"
-     inkscape:window-y="702"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg8" />
-  <g
-     id="g6"
-     style="fill:#898395;fill-opacity:1">
-    <path
-       d="M26,17.4589613 L26,3 L4,3 L4,22.0601057 L10.0032868,22.0601057 L10.0032868,26 L14.0004537,22.0601057 L21.3322933,22.0601057 L26,17.4589613 L26,17.4589613 Z M21.0896458,26.0850335 L15.1583403,26.0850335 L11.2051771,30 L7.24798611,30 L7.24798611,26.0850335 L0,26.0850335 L0,5.21746493 L1.97773958,0 L29,0 L29,18.2620736 L21.0896458,26.0850335 L21.0896458,26.0850335 Z"
-       id="path2"
-       style="fill:#898395;fill-opacity:1" />
-    <path
-       d="M20.8587626,12.1710126 L22.4052753,13.7175252 L23.7175252,12.4052753 L22.1710126,10.8587626 L23.7175252,9.31224999 L22.4052753,8 L20.8587626,9.54651264 L19.31225,8 L18,9.31224999 L19.5465126,10.8587626 L18,12.4052753 L19.31225,13.7175252 L20.8587626,12.1710126 Z M11.8587626,12.1710126 L13.4052753,13.7175252 L14.7175252,12.4052753 L13.1710126,10.8587626 L14.7175252,9.31224999 L13.4052753,8 L11.8587626,9.54651264 L10.31225,8 L9,9.31224999 L10.5465126,10.8587626 L9,12.4052753 L10.31225,13.7175252 L11.8587626,12.1710126 Z"
-       id="path4"
-       style="fill:#898395;fill-opacity:1" />
-  </g>
-</svg>