NOISSUE add versioning to component metadata format and use it

6 files changed, 64 insertions, 67 deletions

diff --git a/api/logic/meta/JsonFormat.cpp b/api/logic/meta/JsonFormat.cpp
index 832743ed..6e84597c 100644
--- a/api/logic/meta/JsonFormat.cpp
+++ b/api/logic/meta/JsonFormat.cpp
@@ -28,6 +28,11 @@ using namespace Json;
 namespace Meta
 {
 
+MetadataVersion currentFormatVersion()
+{
+	return MetadataVersion::InitialRelease;
+}
+
 // Index
 static std::shared_ptr<Index> parseIndexInternal(const QJsonObject &obj)
 {
@@ -49,7 +54,6 @@ static VersionPtr parseCommonVersion(const QString &uid, const QJsonObject &obj)
 	VersionPtr version = std::make_shared<Version>(uid, requireString(obj, "version"));
 	version->setTime(QDateTime::fromString(requireString(obj, "releaseTime"), Qt::ISODate).toMSecsSinceEpoch() / 1000);
 	version->setType(ensureString(obj, "type", QString()));
-	version->setParentUid(ensureString(obj, "parentUid", QString()));
 	version->setRecommended(ensureBoolean(obj, QString("recommended"), false));
 	version->setVolatile(ensureBoolean(obj, QString("volatile"), false));
 	RequireSet requires, conflicts;
@@ -86,56 +90,79 @@ static std::shared_ptr<VersionList> parseVersionListInternal(const QJsonObject &
 
 	VersionListPtr list = std::make_shared<VersionList>(uid);
 	list->setName(ensureString(obj, "name", QString()));
-	list->setParentUid(ensureString(obj, "parentUid", QString()));
 	list->setVersions(versions);
 	return list;
 }
 
 
-static int formatVersion(const QJsonObject &obj)
+MetadataVersion parseFormatVersion(const QJsonObject &obj, bool required)
 {
-	if (!obj.contains("formatVersion")) {
-		throw ParseException(QObject::tr("Missing required field: 'formatVersion'"));
+	if (!obj.contains("formatVersion"))
+	{
+		if(required)
+		{
+			return MetadataVersion::Invalid;
+		}
+		return MetadataVersion::InitialRelease;
+	}
+	if (!obj.value("formatVersion").isDouble())
+	{
+		return MetadataVersion::Invalid;
+	}
+	switch(obj.value("formatVersion").toInt())
+	{
+		case 0:
+			return MetadataVersion::InitialRelease;
+		default:
+			return MetadataVersion::Invalid;
 	}
-	if (!obj.value("formatVersion").isDouble()) {
-		throw ParseException(QObject::tr("Required field has invalid type: 'formatVersion'"));
+}
+
+void serializeFormatVersion(QJsonObject& obj, Meta::MetadataVersion version)
+{
+	if(version == MetadataVersion::Invalid)
+	{
+		return;
 	}
-	return obj.value("formatVersion").toInt();
+	obj.insert("formatVersion", int(version));
 }
 
 void parseIndex(const QJsonObject &obj, Index *ptr)
 {
-	const int version = formatVersion(obj);
-	switch (version) {
-	case 0:
+	const MetadataVersion version = parseFormatVersion(obj);
+	switch (version)
+	{
+	case MetadataVersion::InitialRelease:
 		ptr->merge(parseIndexInternal(obj));
 		break;
-	default:
-		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	case MetadataVersion::Invalid:
+		throw ParseException(QObject::tr("Unknown format version!"));
 	}
 }
 
 void parseVersionList(const QJsonObject &obj, VersionList *ptr)
 {
-	const int version = formatVersion(obj);
-	switch (version) {
-	case 0:
+	const MetadataVersion version = parseFormatVersion(obj);
+	switch (version)
+	{
+	case MetadataVersion::InitialRelease:
 		ptr->merge(parseVersionListInternal(obj));
 		break;
-	default:
-		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	case MetadataVersion::Invalid:
+		throw ParseException(QObject::tr("Unknown format version!"));
 	}
 }
 
 void parseVersion(const QJsonObject &obj, Version *ptr)
 {
-	const int version = formatVersion(obj);
-	switch (version) {
-	case 0:
+	const MetadataVersion version = parseFormatVersion(obj);
+	switch (version)
+	{
+	case MetadataVersion::InitialRelease:
 		ptr->merge(parseVersionInternal(obj));
 		break;
-	default:
-		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	case MetadataVersion::Invalid:
+		throw ParseException(QObject::tr("Unknown format version!"));
 	}
 }
 
diff --git a/api/logic/meta/JsonFormat.h b/api/logic/meta/JsonFormat.h
index 9b9dcd91..82ab0ce3 100644
--- a/api/logic/meta/JsonFormat.h
+++ b/api/logic/meta/JsonFormat.h
@@ -28,6 +28,12 @@ class Index;
 class Version;
 class VersionList;
 
+enum class MetadataVersion
+{
+	Invalid = -1,
+	InitialRelease = 0
+};
+
 class ParseException : public Exception
 {
 public:
@@ -65,9 +71,13 @@ void parseIndex(const QJsonObject &obj, Index *ptr);
 void parseVersion(const QJsonObject &obj, Version *ptr);
 void parseVersionList(const QJsonObject &obj, VersionList *ptr);
 
+MetadataVersion parseFormatVersion(const QJsonObject &obj, bool required = true);
+void serializeFormatVersion(QJsonObject &obj, MetadataVersion version);
+
 // FIXME: this has a different shape than the others...FIX IT!?
 void parseRequires(const QJsonObject &obj, RequireSet * ptr, const char * keyName = "requires");
 void serializeRequires(QJsonObject & objOut, RequireSet* ptr, const char * keyName = "requires");
+MetadataVersion currentFormatVersion();
 }
 
 Q_DECLARE_METATYPE(std::set<Meta::Require>);
\ No newline at end of file
diff --git a/api/logic/meta/Version.cpp b/api/logic/meta/Version.cpp
index 55b92966..c9056547 100644
--- a/api/logic/meta/Version.cpp
+++ b/api/logic/meta/Version.cpp
@@ -79,10 +79,6 @@ void Meta::Version::mergeFromList(const Meta::VersionPtr& other)
 	{
 		m_conflicts = other->m_conflicts;
 	}
-	if (m_parentUid != other->m_parentUid)
-	{
-		setParentUid(other->m_parentUid);
-	}
 	if(m_volatile != other->m_volatile)
 	{
 		setVolatile(other->m_volatile);
@@ -103,12 +99,6 @@ QString Meta::Version::localFilename() const
 	return m_uid + '/' + m_version + ".json";
 }
 
-void Meta::Version::setParentUid(const QString& parentUid)
-{
-	m_parentUid = parentUid;
-	emit requiresChanged();
-}
-
 void Meta::Version::setType(const QString &type)
 {
 	m_type = type;
diff --git a/api/logic/meta/Version.h b/api/logic/meta/Version.h
index debdf20a..d284da69 100644
--- a/api/logic/meta/Version.h
+++ b/api/logic/meta/Version.h
@@ -50,10 +50,6 @@ public: /* con/des */
 	{
 		return m_uid;
 	}
-	QString parentUid() const
-	{
-		return m_parentUid;
-	}
 	QString version() const
 	{
 		return m_version;
@@ -91,7 +87,6 @@ public: /* con/des */
 	QString localFilename() const override;
 
 public: // for usage by format parsers only
-	void setParentUid(const QString &parentUid);
 	void setType(const QString &type);
 	void setTime(const qint64 time);
 	void setRequires(const Meta::RequireSet &requires, const Meta::RequireSet &conflicts);
@@ -110,7 +105,6 @@ private:
 	bool m_recommended = false;
 	QString m_name;
 	QString m_uid;
-	QString m_parentUid;
 	QString m_version;
 	QString m_type;
 	qint64 m_time = 0;
diff --git a/api/logic/meta/VersionList.cpp b/api/logic/meta/VersionList.cpp
index 4963f235..66dc9fd1 100644
--- a/api/logic/meta/VersionList.cpp
+++ b/api/logic/meta/VersionList.cpp
@@ -76,20 +76,17 @@ QVariant VersionList::data(const QModelIndex &index, int role) const
 		return version->version();
 	case ParentVersionRole:
 	{
-		auto parentUid = this->parentUid();
-		if(parentUid.isEmpty())
-		{
-			return QVariant();
-		}
+		// FIXME: HACK: this should be generic and be replaced by something else. Anything that is a hard 'equals' dep is a 'parent uid'.
 		auto & reqs = version->requires();
-		auto iter = std::find_if(reqs.begin(), reqs.end(), [&parentUid](const Require & req)
+		auto iter = std::find_if(reqs.begin(), reqs.end(), [](const Require & req)
 		{
-			return req.uid == parentUid;
+			return req.uid == "net.minecraft";
 		});
 		if (iter != reqs.end())
 		{
 			return (*iter).equalsVersion;
 		}
+		return QVariant();
 	}
 	case TypeRole: return version->type();
 
@@ -196,11 +193,6 @@ void VersionList::mergeFromIndex(const VersionListPtr &other)
 	{
 		setName(other->m_name);
 	}
-
-	if(m_parentUid != other->m_parentUid)
-	{
-		setParentUid(other->m_parentUid);
-	}
 }
 
 void VersionList::merge(const VersionListPtr &other)
@@ -210,11 +202,6 @@ void VersionList::merge(const VersionListPtr &other)
 		setName(other->m_name);
 	}
 
-	if(m_parentUid != other->m_parentUid)
-	{
-		setParentUid(other->m_parentUid);
-	}
-
 	// TODO: do not reset the whole model. maybe?
 	beginResetModel();
 	m_versions.clear();
@@ -256,8 +243,3 @@ BaseVersionPtr VersionList::getRecommended() const
 }
 
 }
-
-void Meta::VersionList::setParentUid(const QString& parentUid)
-{
-	m_parentUid = parentUid;
-}
diff --git a/api/logic/meta/VersionList.h b/api/logic/meta/VersionList.h
index c4a2b757..f880c7fd 100644
--- a/api/logic/meta/VersionList.h
+++ b/api/logic/meta/VersionList.h
@@ -55,10 +55,6 @@ public:
 
 	QString localFilename() const override;
 
-	QString parentUid() const
-	{
-		return m_parentUid;
-	}
 	QString uid() const
 	{
 		return m_uid;
@@ -78,7 +74,6 @@ public:
 
 public: // for usage only by parsers
 	void setName(const QString &name);
-	void setParentUid(const QString &parentUid);
 	void setVersions(const QVector<VersionPtr> &versions);
 	void merge(const VersionListPtr &other);
 	void mergeFromIndex(const VersionListPtr &other);
@@ -96,7 +91,6 @@ private:
 	QVector<VersionPtr> m_versions;
 	QHash<QString, VersionPtr> m_lookup;
 	QString m_uid;
-	QString m_parentUid;
 	QString m_name;
 
 	VersionPtr m_recommended;