NOISSUE add silly twitch URL and CCIP resolving page to 'add instance'

It needs a few more steps and it will handle all kinds of twitch packs.

3 files changed, 182 insertions, 0 deletions

diff --git a/api/logic/CMakeLists.txt b/api/logic/CMakeLists.txt
index 94da2682..1f795556 100644
--- a/api/logic/CMakeLists.txt
+++ b/api/logic/CMakeLists.txt
@@ -443,6 +443,8 @@ 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
new file mode 100644
index 00000000..068b6a34
--- /dev/null
+++ b/api/logic/modplatform/flame/UrlResolvingTask.cpp
@@ -0,0 +1,140 @@
+#include "UrlResolvingTask.h"
+#include <QtXml>
+
+/*
+namespace {
+const char * metabase = "https://cursemeta.dries007.net";
+}
+*/
+
+Flame::UrlResolvingTask::UrlResolvingTask(const QString& toProcess)
+    : m_url(toProcess)
+{
+}
+
+void Flame::UrlResolvingTask::executeTask()
+{
+    setStatus(tr("Resolving URL..."));
+    setProgress(0, 1);
+    m_dljob.reset(new NetJob("URL resolver"));
+
+    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);
+    connect(m_dljob.get(), &NetJob::finished, this, &Flame::UrlResolvingTask::netJobFinished);
+    m_dljob->start();
+}
+
+void Flame::UrlResolvingTask::netJobFinished()
+{
+    if(weAreDigging) {
+        processHTML();
+    } else {
+        processCCIP();
+    }
+}
+
+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;
+        executeTask();
+        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 resove projectId as a number."));
+        return;
+    }
+    m_result.fileId = fileId.toInt(&success);
+    if(!success) {
+        emitFailed(tr("Failed to resove fileId as a number."));
+        return;
+    }
+    qDebug() << "Resolved" << m_url << "as" << m_result.projectId << "/" << m_result.fileId;
+    emitSucceeded();
+}
+
diff --git a/api/logic/modplatform/flame/UrlResolvingTask.h b/api/logic/modplatform/flame/UrlResolvingTask.h
new file mode 100644
index 00000000..72f3dce1
--- /dev/null
+++ b/api/logic/modplatform/flame/UrlResolvingTask.h
@@ -0,0 +1,40 @@
+#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 netJobFinished();
+
+private: /* data */
+    QString m_url;
+    QString needle;
+    Flame::File m_result;
+    QByteArray results;
+    NetJobPtr m_dljob;
+    bool weAreDigging = false;
+};
+}
+