NOISSUE add support for Flame packs with resource packs

And a bunch of undefined things we don't handle intentionally just yet...

api/logic/FileSystem.cpp

@@ -225,7 +225,7 @@ bool deletePath(QString path)
 }
 
 
-QString PathCombine(QString path1, QString path2)
+QString PathCombine(const QString & path1, const QString & path2)
 {
 	if(!path1.size())
 		return path2;
@@ -234,11 +234,16 @@ QString PathCombine(QString path1, QString path2)
     return QDir::cleanPath(path1 + QDir::separator() + path2);
 }
 
-QString PathCombine(QString path1, QString path2, QString path3)
+QString PathCombine(const QString & path1, const QString & path2, const QString & path3)
 {
 	return PathCombine(PathCombine(path1, path2), path3);
 }
 
+QString PathCombine(const QString & path1, const QString & path2, const QString & path3, const QString & path4)
+{
+	return PathCombine(PathCombine(path1, path2, path3), path4);
+}
+
 QString AbsolutePath(QString path)
 {
 	return QFileInfo(path).absolutePath();

api/logic/FileSystem.h

@@ -83,8 +83,9 @@ private:
  */
 MULTIMC_LOGIC_EXPORT bool deletePath(QString path);
 
-MULTIMC_LOGIC_EXPORT QString PathCombine(QString path1, QString path2);
+MULTIMC_LOGIC_EXPORT QString PathCombine(const QString &path1, const QString &path2);
-MULTIMC_LOGIC_EXPORT QString PathCombine(QString path1, QString path2, QString path3);
+MULTIMC_LOGIC_EXPORT QString PathCombine(const QString &path1, const QString &path2, const QString &path3);
+MULTIMC_LOGIC_EXPORT QString PathCombine(const QString &path1, const QString &path2, const QString &path3, const QString &path4);
 
 MULTIMC_LOGIC_EXPORT QString AbsolutePath(QString path);
 

api/logic/InstanceImportTask.cpp

@@ -297,8 +297,8 @@ void InstanceImportTask::processFlame()
 		m_filesNetJob.reset(new NetJob(tr("Mod download")));
 		for(auto result: results.files)
 		{
-			auto path = FS::PathCombine(m_stagingPath, "minecraft/mods", result.fileName);
+			auto path = FS::PathCombine(m_stagingPath ,"minecraft", result.targetFolder, result.fileName);
-			auto dl = Net::Download::makeFile(result.url,path);
+			auto dl = Net::Download::makeFile(result.url, path);
 			m_filesNetJob->addNetAction(dl);
 		}
 		m_modIdResolver.reset();

api/logic/minecraft/flame/FileResolvingTask.cpp

@@ -49,6 +49,51 @@ void Flame::FileResolvingTask::netJobFinished()
 			}
 			out.fileName = Json::requireString(obj, "FileNameOnDisk");
 			out.url = Json::requireString(obj, "DownloadURL");
+			// This is a piece of a Flame project JSON pulled out into the file metadata (here) for convenience
+			// It is also optional
+			QJsonObject projObj = Json::ensureObject(obj, "_Project", {});
+			if(!projObj.isEmpty())
+			{
+				QString strType = Json::ensureString(projObj, "PackageType", "mod").toLower();
+				if(strType == "singlefile")
+				{
+					out.type = File::Type::SingleFile;
+				}
+				// FIXME: what are these?
+				/*
+				else if(strType == "ctoc")
+				{
+					out.type = File::Type::Ctoc;
+				}
+				else if(strType == "cmod2")
+				{
+					out.type = File::Type::Cmod2;
+				}
+				*/
+				else if(strType == "mod")
+				{
+					out.type = File::Type::Mod;
+				}
+				// FIXME: how to handle nested packs and folders?
+				/*
+				else if(strType == "folder")
+				{
+					out.type = File::Type::Folder;
+				}
+				else if(strType == "modpack")
+				{
+					out.type = File::Type::Modpack;
+				}
+				*/
+				else
+				{
+					qCritical() << "Resolving of" << out.projectId << out.fileId << "failed because of unknown file type:" << strType;
+					out.type = File::Type::Unknown;
+					failed = true;
+					continue;
+				}
+				out.targetFolder = Json::ensureString(projObj, "Path", "mods");
+			}
 			out.resolved = true;
 		}
 		catch(JSONValidationError & e)

api/logic/minecraft/flame/PackManifest.cpp

@@ -5,7 +5,6 @@ static void loadFileV1(Flame::File & f, QJsonObject & file)
 {
 	f.projectId = Json::requireInteger(file, "projectID");
 	f.fileId = Json::requireInteger(file, "fileID");
-	// FIXME: what does this mean?
 	f.required = Json::ensureBoolean(file, QString("required"), true);
 }
 

api/logic/minecraft/flame/PackManifest.h

@@ -9,12 +9,24 @@ struct File
 {
 	int projectId = 0;
 	int fileId = 0;
+	// NOTE: the opposite to 'optional'. This is at the time of writing unused.
 	bool required = true;
 
 	// our
 	bool resolved = false;
 	QString fileName;
 	QString url;
+	QString targetFolder = QLatin1Literal("mods");
+	enum class Type
+	{
+		Unknown,
+		Folder,
+		Ctoc,
+		SingleFile,
+		Cmod2,
+		Modpack,
+		Mod
+	} type = Type::Mod;
 };
 
 struct Modloader