NOISSUE Add a skeleton of the wonko system

32 files changed, 1841 insertions, 26 deletions

diff --git a/logic/BaseVersionList.cpp b/logic/BaseVersionList.cpp
index 73f4a7ef..b34f318c 100644
--- a/logic/BaseVersionList.cpp
+++ b/logic/BaseVersionList.cpp
@@ -72,7 +72,7 @@ QVariant BaseVersionList::data(const QModelIndex &index, int role) const
 	}
 }
 
-BaseVersionList::RoleList BaseVersionList::providesRoles()
+BaseVersionList::RoleList BaseVersionList::providesRoles() const
 {
 	return {VersionPointerRole, VersionRole, VersionIdRole, TypeRole};
 }
@@ -87,3 +87,18 @@ int BaseVersionList::columnCount(const QModelIndex &parent) const
 {
 	return 1;
 }
+
+QHash<int, QByteArray> BaseVersionList::roleNames() const
+{
+	QHash<int, QByteArray> roles = QAbstractListModel::roleNames();
+	roles.insert(VersionRole, "version");
+	roles.insert(VersionIdRole, "versionId");
+	roles.insert(ParentGameVersionRole, "parentGameVersion");
+	roles.insert(RecommendedRole, "recommended");
+	roles.insert(LatestRole, "latest");
+	roles.insert(TypeRole, "type");
+	roles.insert(BranchRole, "branch");
+	roles.insert(PathRole, "path");
+	roles.insert(ArchitectureRole, "architecture");
+	return roles;
+}
diff --git a/logic/BaseVersionList.h b/logic/BaseVersionList.h
index 42ea77c0..73d2ee1f 100644
--- a/logic/BaseVersionList.h
+++ b/logic/BaseVersionList.h
@@ -50,9 +50,10 @@ public:
 		TypeRole,
 		BranchRole,
 		PathRole,
-		ArchitectureRole
+		ArchitectureRole,
+		SortRole
 	};
-	typedef QList<ModelRoles> RoleList;
+	typedef QList<int> RoleList;
 
 	explicit BaseVersionList(QObject *parent = 0);
 
@@ -78,9 +79,10 @@ public:
 	virtual QVariant data(const QModelIndex &index, int role) const;
 	virtual int rowCount(const QModelIndex &parent) const;
 	virtual int columnCount(const QModelIndex &parent) const;
+	virtual QHash<int, QByteArray> roleNames() const override;
 
 	//! which roles are provided by this version list?
-	virtual RoleList providesRoles();
+	virtual RoleList providesRoles() const;
 
 	/*!
 	 * \brief Finds a version by its descriptor.
diff --git a/logic/CMakeLists.txt b/logic/CMakeLists.txt
index 19236e1b..cd8aa246 100644
--- a/logic/CMakeLists.txt
+++ b/logic/CMakeLists.txt
@@ -313,6 +313,27 @@ set(LOGIC_SOURCES
 	tools/MCEditTool.cpp
 	tools/MCEditTool.h
 
+	# Wonko
+	wonko/tasks/BaseWonkoEntityRemoteLoadTask.cpp
+	wonko/tasks/BaseWonkoEntityRemoteLoadTask.h
+	wonko/tasks/BaseWonkoEntityLocalLoadTask.cpp
+	wonko/tasks/BaseWonkoEntityLocalLoadTask.h
+	wonko/format/WonkoFormatV1.cpp
+	wonko/format/WonkoFormatV1.h
+	wonko/format/WonkoFormat.cpp
+	wonko/format/WonkoFormat.h
+	wonko/BaseWonkoEntity.cpp
+	wonko/BaseWonkoEntity.h
+	wonko/WonkoVersionList.cpp
+	wonko/WonkoVersionList.h
+	wonko/WonkoVersion.cpp
+	wonko/WonkoVersion.h
+	wonko/WonkoIndex.cpp
+	wonko/WonkoIndex.h
+	wonko/WonkoUtil.cpp
+	wonko/WonkoUtil.h
+	wonko/WonkoReference.cpp
+	wonko/WonkoReference.h
 )
 ################################ COMPILE ################################
 
diff --git a/logic/Env.cpp b/logic/Env.cpp
index c9093e77..d66ec184 100644
--- a/logic/Env.cpp
+++ b/logic/Env.cpp
@@ -8,6 +8,7 @@
 #include <QNetworkAccessManager>
 #include <QDebug>
 #include "tasks/Task.h"
+#include "wonko/WonkoIndex.h"
 #include <QDebug>
 
 /*
@@ -138,6 +139,15 @@ void Env::registerVersionList(QString name, std::shared_ptr< BaseVersionList > v
 	m_versionLists[name] = vlist;
 }
 
+std::shared_ptr<WonkoIndex> Env::wonkoIndex()
+{
+	if (!m_wonkoIndex)
+	{
+		m_wonkoIndex = std::make_shared<WonkoIndex>();
+	}
+	return m_wonkoIndex;
+}
+
 
 void Env::initHttpMetaCache()
 {
@@ -154,6 +164,7 @@ void Env::initHttpMetaCache()
 	m_metacache->addBase("root", QDir::currentPath());
 	m_metacache->addBase("translations", QDir("translations").absolutePath());
 	m_metacache->addBase("icons", QDir("cache/icons").absolutePath());
+	m_metacache->addBase("wonko", QDir("cache/wonko").absolutePath());
 	m_metacache->Load();
 }
 
diff --git a/logic/Env.h b/logic/Env.h
index 806fa106..2b29acaa 100644
--- a/logic/Env.h
+++ b/logic/Env.h
@@ -11,6 +11,7 @@ class QNetworkAccessManager;
 class HttpMetaCache;
 class BaseVersionList;
 class BaseVersion;
+class WonkoIndex;
 
 #if defined(ENV)
 	#undef ENV
@@ -49,9 +50,17 @@ public:
 	std::shared_ptr<BaseVersion> getVersion(QString component, QString version);
 
 	void registerVersionList(QString name, std::shared_ptr<BaseVersionList> vlist);
+
+	std::shared_ptr<WonkoIndex> wonkoIndex();
+
+	QString wonkoRootUrl() const { return m_wonkoRootUrl; }
+	void setWonkoRootUrl(const QString &url) { m_wonkoRootUrl = url; }
+
 protected:
 	std::shared_ptr<QNetworkAccessManager> m_qnam;
 	std::shared_ptr<HttpMetaCache> m_metacache;
 	std::shared_ptr<IconList> m_icons;
 	QMap<QString, std::shared_ptr<BaseVersionList>> m_versionLists;
+	std::shared_ptr<WonkoIndex> m_wonkoIndex;
+	QString m_wonkoRootUrl;
 };
diff --git a/logic/Json.h b/logic/Json.h
index cb266c6e..2cb60f0e 100644
--- a/logic/Json.h
+++ b/logic/Json.h
@@ -113,9 +113,9 @@ template<> MULTIMC_LOGIC_EXPORT QUrl requireIsType<QUrl>(const QJsonValue &value
 // the following functions are higher level functions, that make use of the above functions for
 // type conversion
 template <typename T>
-T ensureIsType(const QJsonValue &value, const T default_, const QString &what = "Value")
+T ensureIsType(const QJsonValue &value, const T default_ = T(), const QString &what = "Value")
 {
-	if (value.isUndefined())
+	if (value.isUndefined() || value.isNull())
 	{
 		return default_;
 	}
@@ -142,7 +142,7 @@ T requireIsType(const QJsonObject &parent, const QString &key, const QString &wh
 }
 
 template <typename T>
-T ensureIsType(const QJsonObject &parent, const QString &key, const T default_, const QString &what = "__placeholder__")
+T ensureIsType(const QJsonObject &parent, const QString &key, const T default_ = T(), const QString &what = "__placeholder__")
 {
 	const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
 	if (!parent.contains(key))
@@ -153,10 +153,10 @@ T ensureIsType(const QJsonObject &parent, const QString &key, const T default_,
 }
 
 template <typename T>
-QList<T> requireIsArrayOf(const QJsonDocument &doc)
+QVector<T> requireIsArrayOf(const QJsonDocument &doc)
 {
 	const QJsonArray array = requireArray(doc);
-	QList<T> out;
+	QVector<T> out;
 	for (const QJsonValue val : array)
 	{
 		out.append(requireIsType<T>(val, "Document"));
@@ -165,19 +165,19 @@ QList<T> requireIsArrayOf(const QJsonDocument &doc)
 }
 
 template <typename T>
-QList<T> ensureIsArrayOf(const QJsonValue &value, const QString &what = "Value")
+QVector<T> ensureIsArrayOf(const QJsonValue &value, const QString &what = "Value")
 {
-	const QJsonArray array = requireIsType<QJsonArray>(value, what);
-	QList<T> out;
+	const QJsonArray array = ensureIsType<QJsonArray>(value, QJsonArray(), what);
+	QVector<T> out;
 	for (const QJsonValue val : array)
 	{
-		out.append(ensureIsType<T>(val, what));
+		out.append(requireIsType<T>(val, what));
 	}
 	return out;
 }
 
 template <typename T>
-QList<T> ensureIsArrayOf(const QJsonValue &value, const QList<T> default_, const QString &what = "Value")
+QVector<T> ensureIsArrayOf(const QJsonValue &value, const QVector<T> default_, const QString &what = "Value")
 {
 	if (value.isUndefined())
 	{
@@ -188,19 +188,19 @@ QList<T> ensureIsArrayOf(const QJsonValue &value, const QList<T> default_, const
 
 /// @throw JsonException
 template <typename T>
-QList<T> requireIsArrayOf(const QJsonObject &parent, const QString &key, const QString &what = "__placeholder__")
+QVector<T> requireIsArrayOf(const QJsonObject &parent, const QString &key, const QString &what = "__placeholder__")
 {
 	const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
 	if (!parent.contains(key))
 	{
 		throw JsonException(localWhat + "s parent does not contain " + localWhat);
 	}
-	return requireIsArrayOf<T>(parent.value(key), localWhat);
+	return ensureIsArrayOf<T>(parent.value(key), localWhat);
 }
 
 template <typename T>
-QList<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
-						 const QList<T> &default_, const QString &what = "__placeholder__")
+QVector<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
+						 const QVector<T> &default_ = QVector<T>(), const QString &what = "__placeholder__")
 {
 	const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
 	if (!parent.contains(key))
@@ -216,7 +216,7 @@ QList<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
 	{ \
 		return requireIsType<TYPE>(value, what); \
 	} \
-	inline TYPE ensure##NAME(const QJsonValue &value, const TYPE default_, const QString &what = "Value") \
+	inline TYPE ensure##NAME(const QJsonValue &value, const TYPE default_ = TYPE(), const QString &what = "Value") \
 	{ \
 		return ensureIsType<TYPE>(value, default_, what); \
 	} \
@@ -224,7 +224,7 @@ QList<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
 	{ \
 		return requireIsType<TYPE>(parent, key, what); \
 	} \
-	inline TYPE ensure##NAME(const QJsonObject &parent, const QString &key, const TYPE default_, const QString &what = "__placeholder") \
+	inline TYPE ensure##NAME(const QJsonObject &parent, const QString &key, const TYPE default_ = TYPE(), const QString &what = "__placeholder") \
 	{ \
 		return ensureIsType<TYPE>(parent, key, default_, what); \
 	}
diff --git a/logic/java/JavaInstallList.cpp b/logic/java/JavaInstallList.cpp
index fbd8ee9b..c0729227 100644
--- a/logic/java/JavaInstallList.cpp
+++ b/logic/java/JavaInstallList.cpp
@@ -77,7 +77,7 @@ QVariant JavaInstallList::data(const QModelIndex &index, int role) const
 	}
 }
 
-BaseVersionList::RoleList JavaInstallList::providesRoles()
+BaseVersionList::RoleList JavaInstallList::providesRoles() const
 {
 	return {VersionPointerRole, VersionIdRole, VersionRole, RecommendedRole, PathRole, ArchitectureRole};
 }
diff --git a/logic/java/JavaInstallList.h b/logic/java/JavaInstallList.h
index f2ec20f7..cf0e5784 100644
--- a/logic/java/JavaInstallList.h
+++ b/logic/java/JavaInstallList.h
@@ -41,7 +41,7 @@ public:
 	virtual void sortVersions() override;
 
 	virtual QVariant data(const QModelIndex &index, int role) const override;
-	virtual RoleList providesRoles() override;
+	virtual RoleList providesRoles() const override;
 
 public slots:
 	virtual void updateListData(QList<BaseVersionPtr> versions) override;
diff --git a/logic/minecraft/MinecraftVersionList.cpp b/logic/minecraft/MinecraftVersionList.cpp
index eab55c9a..a5cc3a39 100644
--- a/logic/minecraft/MinecraftVersionList.cpp
+++ b/logic/minecraft/MinecraftVersionList.cpp
@@ -307,7 +307,7 @@ QVariant MinecraftVersionList::data(const QModelIndex& index, int role) const
 	}
 }
 
-BaseVersionList::RoleList MinecraftVersionList::providesRoles()
+BaseVersionList::RoleList MinecraftVersionList::providesRoles() const
 {
 	return {VersionPointerRole, VersionRole, VersionIdRole, RecommendedRole, LatestRole, TypeRole};
 }
diff --git a/logic/minecraft/MinecraftVersionList.h b/logic/minecraft/MinecraftVersionList.h
index 8643f0f0..0fca02a7 100644
--- a/logic/minecraft/MinecraftVersionList.h
+++ b/logic/minecraft/MinecraftVersionList.h
@@ -52,7 +52,7 @@ public:
 	virtual int count() const override;
 	virtual void sortVersions() override;
 	virtual QVariant data(const QModelIndex & index, int role) const override;
-	virtual RoleList providesRoles() override;
+	virtual RoleList providesRoles() const override;
 
 	virtual BaseVersionPtr getLatestStable() const override;
 	virtual BaseVersionPtr getRecommended() const override;
diff --git a/logic/minecraft/forge/ForgeVersionList.cpp b/logic/minecraft/forge/ForgeVersionList.cpp
index 907672f2..de185e5f 100644
--- a/logic/minecraft/forge/ForgeVersionList.cpp
+++ b/logic/minecraft/forge/ForgeVersionList.cpp
@@ -89,7 +89,7 @@ QVariant ForgeVersionList::data(const QModelIndex &index, int role) const
 	}
 }
 
-QList<BaseVersionList::ModelRoles> ForgeVersionList::providesRoles()
+BaseVersionList::RoleList ForgeVersionList::providesRoles() const
 {
 	return {VersionPointerRole, VersionRole, VersionIdRole, ParentGameVersionRole, RecommendedRole, BranchRole};
 }
diff --git a/logic/minecraft/forge/ForgeVersionList.h b/logic/minecraft/forge/ForgeVersionList.h
index 308503e3..62c08b2a 100644
--- a/logic/minecraft/forge/ForgeVersionList.h
+++ b/logic/minecraft/forge/ForgeVersionList.h
@@ -47,7 +47,7 @@ public:
 	ForgeVersionPtr findVersionByVersionNr(QString version);
 
 	virtual QVariant data(const QModelIndex &index, int role) const override;
-	virtual QList<ModelRoles> providesRoles() override;
+	virtual RoleList providesRoles() const override;
 
 	virtual int columnCount(const QModelIndex &parent) const override;
 
diff --git a/logic/wonko/BaseWonkoEntity.cpp b/logic/wonko/BaseWonkoEntity.cpp
new file mode 100644
index 00000000..f5c59363
--- /dev/null
+++ b/logic/wonko/BaseWonkoEntity.cpp
@@ -0,0 +1,39 @@
+/* Copyright 2015 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.
+ */
+
+#include "BaseWonkoEntity.h"
+
+#include "Json.h"
+#include "WonkoUtil.h"
+
+BaseWonkoEntity::~BaseWonkoEntity()
+{
+}
+
+void BaseWonkoEntity::store() const
+{
+	Json::write(serialized(), Wonko::localWonkoDir().absoluteFilePath(localFilename()));
+}
+
+void BaseWonkoEntity::notifyLocalLoadComplete()
+{
+	m_localLoaded = true;
+	store();
+}
+void BaseWonkoEntity::notifyRemoteLoadComplete()
+{
+	m_remoteLoaded = true;
+	store();
+}
diff --git a/logic/wonko/BaseWonkoEntity.h b/logic/wonko/BaseWonkoEntity.h
new file mode 100644
index 00000000..191b4184
--- /dev/null
+++ b/logic/wonko/BaseWonkoEntity.h
@@ -0,0 +1,51 @@
+/* Copyright 2015 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 <QObject>
+#include <memory>
+
+#include "multimc_logic_export.h"
+
+class Task;
+
+class MULTIMC_LOGIC_EXPORT BaseWonkoEntity
+{
+public:
+	virtual ~BaseWonkoEntity();
+
+	using Ptr = std::shared_ptr<BaseWonkoEntity>;
+
+	virtual std::unique_ptr<Task> remoteUpdateTask() = 0;
+	virtual std::unique_ptr<Task> localUpdateTask() = 0;
+	virtual void merge(const std::shared_ptr<BaseWonkoEntity> &other) = 0;
+
+	void store() const;
+	virtual QString localFilename() const = 0;
+	virtual QJsonObject serialized() const = 0;
+
+	bool isComplete() const { return m_localLoaded || m_remoteLoaded; }
+
+	bool isLocalLoaded() const { return m_localLoaded; }
+	bool isRemoteLoaded() const { return m_remoteLoaded; }
+
+	void notifyLocalLoadComplete();
+	void notifyRemoteLoadComplete();
+
+private:
+	bool m_localLoaded = false;
+	bool m_remoteLoaded = false;
+};
diff --git a/logic/wonko/WonkoIndex.cpp b/logic/wonko/WonkoIndex.cpp
new file mode 100644
index 00000000..8306af84
--- /dev/null
+++ b/logic/wonko/WonkoIndex.cpp
@@ -0,0 +1,147 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoIndex.h"
+
+#include "WonkoVersionList.h"
+#include "tasks/BaseWonkoEntityLocalLoadTask.h"
+#include "tasks/BaseWonkoEntityRemoteLoadTask.h"
+#include "format/WonkoFormat.h"
+
+WonkoIndex::WonkoIndex(QObject *parent)
+	: QAbstractListModel(parent)
+{
+}
+WonkoIndex::WonkoIndex(const QVector<WonkoVersionListPtr> &lists, QObject *parent)
+	: QAbstractListModel(parent), m_lists(lists)
+{
+	for (int i = 0; i < m_lists.size(); ++i)
+	{
+		m_uids.insert(m_lists.at(i)->uid(), m_lists.at(i));
+		connectVersionList(i, m_lists.at(i));
+	}
+}
+
+QVariant WonkoIndex::data(const QModelIndex &index, int role) const
+{
+	if (index.parent().isValid() || index.row() < 0 || index.row() >= m_lists.size())
+	{
+		return QVariant();
+	}
+
+	WonkoVersionListPtr list = m_lists.at(index.row());
+	switch (role)
+	{
+	case Qt::DisplayRole:
+		switch (index.column())
+		{
+		case 0: return list->humanReadable();
+		default: break;
+		}
+	case UidRole: return list->uid();
+	case NameRole: return list->name();
+	case ListPtrRole: return QVariant::fromValue(list);
+	}
+	return QVariant();
+}
+int WonkoIndex::rowCount(const QModelIndex &parent) const
+{
+	return m_lists.size();
+}
+int WonkoIndex::columnCount(const QModelIndex &parent) const
+{
+	return 1;
+}
+QVariant WonkoIndex::headerData(int section, Qt::Orientation orientation, int role) const
+{
+	if (orientation == Qt::Horizontal && role == Qt::DisplayRole && section == 0)
+	{
+		return tr("Name");
+	}
+	else
+	{
+		return QVariant();
+	}
+}
+
+std::unique_ptr<Task> WonkoIndex::remoteUpdateTask()
+{
+	return std::unique_ptr<WonkoIndexRemoteLoadTask>(new WonkoIndexRemoteLoadTask(this, this));
+}
+std::unique_ptr<Task> WonkoIndex::localUpdateTask()
+{
+	return std::unique_ptr<WonkoIndexLocalLoadTask>(new WonkoIndexLocalLoadTask(this, this));
+}
+
+QJsonObject WonkoIndex::serialized() const
+{
+	return WonkoFormat::serializeIndex(this);
+}
+
+bool WonkoIndex::hasUid(const QString &uid) const
+{
+	return m_uids.contains(uid);
+}
+WonkoVersionListPtr WonkoIndex::getList(const QString &uid) const
+{
+	return m_uids.value(uid, nullptr);
+}
+WonkoVersionListPtr WonkoIndex::getListGuaranteed(const QString &uid) const
+{
+	return m_uids.value(uid, std::make_shared<WonkoVersionList>(uid));
+}
+
+void WonkoIndex::merge(const Ptr &other)
+{
+	const QVector<WonkoVersionListPtr> lists = std::dynamic_pointer_cast<WonkoIndex>(other)->m_lists;
+	// initial load, no need to merge
+	if (m_lists.isEmpty())
+	{
+		beginResetModel();
+		m_lists = lists;
+		for (int i = 0; i < lists.size(); ++i)
+		{
+			m_uids.insert(lists.at(i)->uid(), lists.at(i));
+			connectVersionList(i, lists.at(i));
+		}
+		endResetModel();
+	}
+	else
+	{
+		for (const WonkoVersionListPtr &list : lists)
+		{
+			if (m_uids.contains(list->uid()))
+			{
+				m_uids[list->uid()]->merge(list);
+			}
+			else
+			{
+				beginInsertRows(QModelIndex(), m_lists.size(), m_lists.size());
+				connectVersionList(m_lists.size(), list);
+				m_lists.append(list);
+				m_uids.insert(list->uid(), list);
+				endInsertRows();
+			}
+		}
+	}
+}
+
+void WonkoIndex::connectVersionList(const int row, const WonkoVersionListPtr &list)
+{
+	connect(list.get(), &WonkoVersionList::nameChanged, this, [this, row]()
+	{
+		emit dataChanged(index(row), index(row), QVector<int>() << Qt::DisplayRole);
+	});
+}
diff --git a/logic/wonko/WonkoIndex.h b/logic/wonko/WonkoIndex.h
new file mode 100644
index 00000000..8b149c7d
--- /dev/null
+++ b/logic/wonko/WonkoIndex.h
@@ -0,0 +1,68 @@
+/* Copyright 2015 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 <QAbstractListModel>
+#include <memory>
+
+#include "BaseWonkoEntity.h"
+
+#include "multimc_logic_export.h"
+
+class Task;
+using WonkoVersionListPtr = std::shared_ptr<class WonkoVersionList>;
+
+class MULTIMC_LOGIC_EXPORT WonkoIndex : public QAbstractListModel, public BaseWonkoEntity
+{
+	Q_OBJECT
+public:
+	explicit WonkoIndex(QObject *parent = nullptr);
+	explicit WonkoIndex(const QVector<WonkoVersionListPtr> &lists, QObject *parent = nullptr);
+
+	enum
+	{
+		UidRole = Qt::UserRole,
+		NameRole,
+		ListPtrRole
+	};
+
+	QVariant data(const QModelIndex &index, int role) const override;
+	int rowCount(const QModelIndex &parent) const override;
+	int columnCount(const QModelIndex &parent) const override;
+	QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+
+	std::unique_ptr<Task> remoteUpdateTask() override;
+	std::unique_ptr<Task> localUpdateTask() override;
+
+	QString localFilename() const override { return "index.json"; }
+	QJsonObject serialized() const override;
+
+	// queries
+	bool hasUid(const QString &uid) const;
+	WonkoVersionListPtr getList(const QString &uid) const;
+	WonkoVersionListPtr getListGuaranteed(const QString &uid) const;
+
+	QVector<WonkoVersionListPtr> lists() const { return m_lists; }
+
+public: // for usage by parsers only
+	void merge(const BaseWonkoEntity::Ptr &other);
+
+private:
+	QVector<WonkoVersionListPtr> m_lists;
+	QHash<QString, WonkoVersionListPtr> m_uids;
+
+	void connectVersionList(const int row, const WonkoVersionListPtr &list);
+};
diff --git a/logic/wonko/WonkoReference.cpp b/logic/wonko/WonkoReference.cpp
new file mode 100644
index 00000000..519d59aa
--- /dev/null
+++ b/logic/wonko/WonkoReference.cpp
@@ -0,0 +1,44 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoReference.h"
+
+WonkoReference::WonkoReference(const QString &uid)
+	: m_uid(uid)
+{
+}
+
+QString WonkoReference::uid() const
+{
+	return m_uid;
+}
+
+QString WonkoReference::version() const
+{
+	return m_version;
+}
+void WonkoReference::setVersion(const QString &version)
+{
+	m_version = version;
+}
+
+bool WonkoReference::operator==(const WonkoReference &other) const
+{
+	return m_uid == other.m_uid && m_version == other.m_version;
+}
+bool WonkoReference::operator!=(const WonkoReference &other) const
+{
+	return m_uid != other.m_uid || m_version != other.m_version;
+}
diff --git a/logic/wonko/WonkoReference.h b/logic/wonko/WonkoReference.h
new file mode 100644
index 00000000..73a85d76
--- /dev/null
+++ b/logic/wonko/WonkoReference.h
@@ -0,0 +1,41 @@
+/* Copyright 2015 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 <QString>
+#include <QMetaType>
+
+#include "multimc_logic_export.h"
+
+class MULTIMC_LOGIC_EXPORT WonkoReference
+{
+public:
+	WonkoReference() {}
+	explicit WonkoReference(const QString &uid);
+
+	QString uid() const;
+
+	QString version() const;
+	void setVersion(const QString &version);
+
+	bool operator==(const WonkoReference &other) const;
+	bool operator!=(const WonkoReference &other) const;
+
+private:
+	QString m_uid;
+	QString m_version;
+};
+Q_DECLARE_METATYPE(WonkoReference)
diff --git a/logic/wonko/WonkoUtil.cpp b/logic/wonko/WonkoUtil.cpp
new file mode 100644
index 00000000..94726c6b
--- /dev/null
+++ b/logic/wonko/WonkoUtil.cpp
@@ -0,0 +1,47 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoUtil.h"
+
+#include <QUrl>
+#include <QDir>
+
+#include "Env.h"
+
+namespace Wonko
+{
+QUrl rootUrl()
+{
+	return ENV.wonkoRootUrl();
+}
+QUrl indexUrl()
+{
+	return rootUrl().resolved(QStringLiteral("index.json"));
+}
+QUrl versionListUrl(const QString &uid)
+{
+	return rootUrl().resolved(uid + ".json");
+}
+QUrl versionUrl(const QString &uid, const QString &version)
+{
+	return rootUrl().resolved(uid + "/" + version + ".json");
+}
+
+QDir localWonkoDir()
+{
+	return QDir("wonko");
+}
+
+}
diff --git a/logic/wonko/WonkoUtil.h b/logic/wonko/WonkoUtil.h
new file mode 100644
index 00000000..b618ab71
--- /dev/null
+++ b/logic/wonko/WonkoUtil.h
@@ -0,0 +1,31 @@
+/* Copyright 2015 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 "multimc_logic_export.h"
+
+class QUrl;
+class QString;
+class QDir;
+
+namespace Wonko
+{
+MULTIMC_LOGIC_EXPORT QUrl rootUrl();
+MULTIMC_LOGIC_EXPORT QUrl indexUrl();
+MULTIMC_LOGIC_EXPORT QUrl versionListUrl(const QString &uid);
+MULTIMC_LOGIC_EXPORT QUrl versionUrl(const QString &uid, const QString &version);
+MULTIMC_LOGIC_EXPORT QDir localWonkoDir();
+}
diff --git a/logic/wonko/WonkoVersion.cpp b/logic/wonko/WonkoVersion.cpp
new file mode 100644
index 00000000..7b7da86c
--- /dev/null
+++ b/logic/wonko/WonkoVersion.cpp
@@ -0,0 +1,102 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoVersion.h"
+
+#include <QDateTime>
+
+#include "tasks/BaseWonkoEntityLocalLoadTask.h"
+#include "tasks/BaseWonkoEntityRemoteLoadTask.h"
+#include "format/WonkoFormat.h"
+
+WonkoVersion::WonkoVersion(const QString &uid, const QString &version)
+	: BaseVersion(), m_uid(uid), m_version(version)
+{
+}
+
+QString WonkoVersion::descriptor()
+{
+	return m_version;
+}
+QString WonkoVersion::name()
+{
+	return m_version;
+}
+QString WonkoVersion::typeString() const
+{
+	return m_type;
+}
+
+QDateTime WonkoVersion::time() const
+{
+	return QDateTime::fromMSecsSinceEpoch(m_time * 1000, Qt::UTC);
+}
+
+std::unique_ptr<Task> WonkoVersion::remoteUpdateTask()
+{
+	return std::unique_ptr<WonkoVersionRemoteLoadTask>(new WonkoVersionRemoteLoadTask(this, this));
+}
+std::unique_ptr<Task> WonkoVersion::localUpdateTask()
+{
+	return std::unique_ptr<WonkoVersionLocalLoadTask>(new WonkoVersionLocalLoadTask(this, this));
+}
+
+void WonkoVersion::merge(const std::shared_ptr<BaseWonkoEntity> &other)
+{
+	WonkoVersionPtr version = std::dynamic_pointer_cast<WonkoVersion>(other);
+	if (m_type != version->m_type)
+	{
+		setType(version->m_type);
+	}
+	if (m_time != version->m_time)
+	{
+		setTime(version->m_time);
+	}
+	if (m_requires != version->m_requires)
+	{
+		setRequires(version->m_requires);
+	}
+
+	setData(version->m_data);
+}
+
+QString WonkoVersion::localFilename() const
+{
+	return m_uid + '/' + m_version + ".json";
+}
+QJsonObject WonkoVersion::serialized() const
+{
+	return WonkoFormat::serializeVersion(this);
+}
+
+void WonkoVersion::setType(const QString &type)
+{
+	m_type = type;
+	emit typeChanged();
+}
+void WonkoVersion::setTime(const qint64 time)
+{
+	m_time = time;
+	emit timeChanged();
+}
+void WonkoVersion::setRequires(const QVector<WonkoReference> &requires)
+{
+	m_requires = requires;
+	emit requiresChanged();
+}
+void WonkoVersion::setData(const VersionFilePtr &data)
+{
+	m_data = data;
+}
diff --git a/logic/wonko/WonkoVersion.h b/logic/wonko/WonkoVersion.h
new file mode 100644
index 00000000..a1de4d9b
--- /dev/null
+++ b/logic/wonko/WonkoVersion.h
@@ -0,0 +1,83 @@
+/* Copyright 2015 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 "BaseVersion.h"
+#include "BaseWonkoEntity.h"
+
+#include <QVector>
+#include <QStringList>
+#include <QJsonObject>
+#include <memory>
+
+#include "minecraft/VersionFile.h"
+#include "WonkoReference.h"
+
+#include "multimc_logic_export.h"
+
+using WonkoVersionPtr = std::shared_ptr<class WonkoVersion>;
+
+class MULTIMC_LOGIC_EXPORT WonkoVersion : public QObject, public BaseVersion, public BaseWonkoEntity
+{
+	Q_OBJECT
+	Q_PROPERTY(QString uid READ uid CONSTANT)
+	Q_PROPERTY(QString version READ version CONSTANT)
+	Q_PROPERTY(QString type READ type NOTIFY typeChanged)
+	Q_PROPERTY(QDateTime time READ time NOTIFY timeChanged)
+	Q_PROPERTY(QVector<WonkoReference> requires READ requires NOTIFY requiresChanged)
+public:
+	explicit WonkoVersion(const QString &uid, const QString &version);
+
+	QString descriptor() override;
+	QString name() override;
+	QString typeString() const override;
+
+	QString uid() const { return m_uid; }
+	QString version() const { return m_version; }
+	QString type() const { return m_type; }
+	QDateTime time() const;
+	qint64 rawTime() const { return m_time; }
+	QVector<WonkoReference> requires() const { return m_requires; }
+	VersionFilePtr data() const { return m_data; }
+
+	std::unique_ptr<Task> remoteUpdateTask() override;
+	std::unique_ptr<Task> localUpdateTask() override;
+	void merge(const std::shared_ptr<BaseWonkoEntity> &other) override;
+
+	QString localFilename() const override;
+	QJsonObject serialized() const override;
+
+public: // for usage by format parsers only
+	void setType(const QString &type);
+	void setTime(const qint64 time);
+	void setRequires(const QVector<WonkoReference> &requires);
+	void setData(const VersionFilePtr &data);
+
+signals:
+	void typeChanged();
+	void timeChanged();
+	void requiresChanged();
+
+private:
+	QString m_uid;
+	QString m_version;
+	QString m_type;
+	qint64 m_time;
+	QVector<WonkoReference> m_requires;
+	VersionFilePtr m_data;
+};
+
+Q_DECLARE_METATYPE(WonkoVersionPtr)
diff --git a/logic/wonko/WonkoVersionList.cpp b/logic/wonko/WonkoVersionList.cpp
new file mode 100644
index 00000000..e9d79327
--- /dev/null
+++ b/logic/wonko/WonkoVersionList.cpp
@@ -0,0 +1,283 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoVersionList.h"
+
+#include <QDateTime>
+
+#include "WonkoVersion.h"
+#include "tasks/BaseWonkoEntityRemoteLoadTask.h"
+#include "tasks/BaseWonkoEntityLocalLoadTask.h"
+#include "format/WonkoFormat.h"
+#include "WonkoReference.h"
+
+class WVLLoadTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit WVLLoadTask(WonkoVersionList *list, QObject *parent = nullptr)
+		: Task(parent), m_list(list)
+	{
+	}
+
+	bool canAbort() const override
+	{
+		return !m_currentTask || m_currentTask->canAbort();
+	}
+	bool abort() override
+	{
+		return m_currentTask->abort();
+	}
+
+private:
+	void executeTask() override
+	{
+		if (!m_list->isLocalLoaded())
+		{
+			m_currentTask = m_list->localUpdateTask();
+			connect(m_currentTask.get(), &Task::succeeded, this, &WVLLoadTask::next);
+		}
+		else
+		{
+			m_currentTask = m_list->remoteUpdateTask();
+			connect(m_currentTask.get(), &Task::succeeded, this, &WVLLoadTask::emitSucceeded);
+		}
+		connect(m_currentTask.get(), &Task::status, this, &WVLLoadTask::setStatus);
+		connect(m_currentTask.get(), &Task::progress, this, &WVLLoadTask::setProgress);
+		connect(m_currentTask.get(), &Task::failed, this, &WVLLoadTask::emitFailed);
+		m_currentTask->start();
+	}
+
+	void next()
+	{
+		m_currentTask = m_list->remoteUpdateTask();
+		connect(m_currentTask.get(), &Task::status, this, &WVLLoadTask::setStatus);
+		connect(m_currentTask.get(), &Task::progress, this, &WVLLoadTask::setProgress);
+		connect(m_currentTask.get(), &Task::succeeded, this, &WVLLoadTask::emitSucceeded);
+		m_currentTask->start();
+	}
+
+	WonkoVersionList *m_list;
+	std::unique_ptr<Task> m_currentTask;
+};
+
+WonkoVersionList::WonkoVersionList(const QString &uid, QObject *parent)
+	: BaseVersionList(parent), m_uid(uid)
+{
+	setObjectName("Wonko version list: " + uid);
+}
+
+Task *WonkoVersionList::getLoadTask()
+{
+	return new WVLLoadTask(this);
+}
+
+bool WonkoVersionList::isLoaded()
+{
+	return isLocalLoaded() && isRemoteLoaded();
+}
+
+const BaseVersionPtr WonkoVersionList::at(int i) const
+{
+	return m_versions.at(i);
+}
+int WonkoVersionList::count() const
+{
+	return m_versions.size();
+}
+
+void WonkoVersionList::sortVersions()
+{
+	beginResetModel();
+	std::sort(m_versions.begin(), m_versions.end(), [](const WonkoVersionPtr &a, const WonkoVersionPtr &b)
+	{
+		return *a.get() < *b.get();
+	});
+	endResetModel();
+}
+
+QVariant WonkoVersionList::data(const QModelIndex &index, int role) const
+{
+	if (!index.isValid() || index.row() < 0 || index.row() >= m_versions.size() || index.parent().isValid())
+	{
+		return QVariant();
+	}
+
+	WonkoVersionPtr version = m_versions.at(index.row());
+
+	switch (role)
+	{
+	case VersionPointerRole: return QVariant::fromValue(std::dynamic_pointer_cast<BaseVersion>(version));
+	case VersionRole:
+	case VersionIdRole:
+		return version->version();
+	case ParentGameVersionRole:
+	{
+		const auto end = version->requires().end();
+		const auto it = std::find_if(version->requires().begin(), end,
+									 [](const WonkoReference &ref) { return ref.uid() == "net.minecraft"; });
+		if (it != end)
+		{
+			return (*it).version();
+		}
+		return QVariant();
+	}
+	case TypeRole: return version->type();
+
+	case UidRole: return version->uid();
+	case TimeRole: return version->time();
+	case RequiresRole: return QVariant::fromValue(version->requires());
+	case SortRole: return version->rawTime();
+	case WonkoVersionPtrRole: return QVariant::fromValue(version);
+	case RecommendedRole: return version == getRecommended();
+	case LatestRole: return version == getLatestStable();
+	default: return QVariant();
+	}
+}
+
+BaseVersionList::RoleList WonkoVersionList::providesRoles() const
+{
+	return {VersionPointerRole, VersionRole, VersionIdRole, ParentGameVersionRole,
+				TypeRole, UidRole, TimeRole, RequiresRole, SortRole,
+				RecommendedRole, LatestRole, WonkoVersionPtrRole};
+}
+
+QHash<int, QByteArray> WonkoVersionList::roleNames() const
+{
+	QHash<int, QByteArray> roles = BaseVersionList::roleNames();
+	roles.insert(UidRole, "uid");
+	roles.insert(TimeRole, "time");
+	roles.insert(SortRole, "sort");
+	roles.insert(RequiresRole, "requires");
+	return roles;
+}
+
+std::unique_ptr<Task> WonkoVersionList::remoteUpdateTask()
+{
+	return std::unique_ptr<WonkoVersionListRemoteLoadTask>(new WonkoVersionListRemoteLoadTask(this, this));
+}
+std::unique_ptr<Task> WonkoVersionList::localUpdateTask()
+{
+	return std::unique_ptr<WonkoVersionListLocalLoadTask>(new WonkoVersionListLocalLoadTask(this, this));
+}
+
+QString WonkoVersionList::localFilename() const
+{
+	return m_uid + ".json";
+}
+QJsonObject WonkoVersionList::serialized() const
+{
+	return WonkoFormat::serializeVersionList(this);
+}
+
+QString WonkoVersionList::humanReadable() const
+{
+	return m_name.isEmpty() ? m_uid : m_name;
+}
+
+bool WonkoVersionList::hasVersion(const QString &version) const
+{
+	return m_lookup.contains(version);
+}
+WonkoVersionPtr WonkoVersionList::getVersion(const QString &version) const
+{
+	return m_lookup.value(version);
+}
+
+void WonkoVersionList::setName(const QString &name)
+{
+	m_name = name;
+	emit nameChanged(name);
+}
+void WonkoVersionList::setVersions(const QVector<WonkoVersionPtr> &versions)
+{
+	beginResetModel();
+	m_versions = versions;
+	std::sort(m_versions.begin(), m_versions.end(), [](const WonkoVersionPtr &a, const WonkoVersionPtr &b)
+	{
+		return a->rawTime() > b->rawTime();
+	});
+	for (int i = 0; i < m_versions.size(); ++i)
+	{
+		m_lookup.insert(m_versions.at(i)->version(), m_versions.at(i));
+		setupAddedVersion(i, m_versions.at(i));
+	}
+
+	m_latest = m_versions.isEmpty() ? nullptr : m_versions.first();
+	auto recommendedIt = std::find_if(m_versions.constBegin(), m_versions.constEnd(), [](const WonkoVersionPtr &ptr) { return ptr->type() == "release"; });
+	m_recommended = recommendedIt == m_versions.constEnd() ? nullptr : *recommendedIt;
+	endResetModel();
+}
+
+void WonkoVersionList::merge(const BaseWonkoEntity::Ptr &other)
+{
+	const WonkoVersionListPtr list = std::dynamic_pointer_cast<WonkoVersionList>(other);
+	if (m_name != list->m_name)
+	{
+		setName(list->m_name);
+	}
+
+	if (m_versions.isEmpty())
+	{
+		setVersions(list->m_versions);
+	}
+	else
+	{
+		for (const WonkoVersionPtr &version : list->m_versions)
+		{
+			if (m_lookup.contains(version->version()))
+			{
+				m_lookup.value(version->version())->merge(version);
+			}
+			else
+			{
+				beginInsertRows(QModelIndex(), m_versions.size(), m_versions.size());
+				setupAddedVersion(m_versions.size(), version);
+				m_versions.append(version);
+				m_lookup.insert(version->uid(), version);
+				endInsertRows();
+
+				if (!m_latest || version->rawTime() > m_latest->rawTime())
+				{
+					m_latest = version;
+					emit dataChanged(index(0), index(m_versions.size() - 1), QVector<int>() << LatestRole);
+				}
+				if (!m_recommended || (version->type() == "release" && version->rawTime() > m_recommended->rawTime()))
+				{
+					m_recommended = version;
+					emit dataChanged(index(0), index(m_versions.size() - 1), QVector<int>() << RecommendedRole);
+				}
+			}
+		}
+	}
+}
+
+void WonkoVersionList::setupAddedVersion(const int row, const WonkoVersionPtr &version)
+{
+	connect(version.get(), &WonkoVersion::requiresChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << RequiresRole); });
+	connect(version.get(), &WonkoVersion::timeChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TimeRole << SortRole); });
+	connect(version.get(), &WonkoVersion::typeChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TypeRole); });
+}
+
+BaseVersionPtr WonkoVersionList::getLatestStable() const
+{
+	return m_latest;
+}
+BaseVersionPtr WonkoVersionList::getRecommended() const
+{
+	return m_recommended;
+}
+
+#include "WonkoVersionList.moc"
diff --git a/logic/wonko/WonkoVersionList.h b/logic/wonko/WonkoVersionList.h
new file mode 100644
index 00000000..8ea35be6
--- /dev/null
+++ b/logic/wonko/WonkoVersionList.h
@@ -0,0 +1,92 @@
+/* Copyright 2015 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 "BaseVersionList.h"
+#include "BaseWonkoEntity.h"
+#include <memory>
+
+using WonkoVersionPtr = std::shared_ptr<class WonkoVersion>;
+using WonkoVersionListPtr = std::shared_ptr<class WonkoVersionList>;
+
+class MULTIMC_LOGIC_EXPORT WonkoVersionList : public BaseVersionList, public BaseWonkoEntity
+{
+	Q_OBJECT
+	Q_PROPERTY(QString uid READ uid CONSTANT)
+	Q_PROPERTY(QString name READ name NOTIFY nameChanged)
+public:
+	explicit WonkoVersionList(const QString &uid, QObject *parent = nullptr);
+
+	enum Roles
+	{
+		UidRole = Qt::UserRole + 100,
+		TimeRole,
+		RequiresRole,
+		WonkoVersionPtrRole
+	};
+
+	Task *getLoadTask() override;
+	bool isLoaded() override;
+	const BaseVersionPtr at(int i) const override;
+	int count() const override;
+	void sortVersions() override;
+
+	BaseVersionPtr getLatestStable() const override;
+	BaseVersionPtr getRecommended() const override;
+
+	QVariant data(const QModelIndex &index, int role) const override;
+	RoleList providesRoles() const override;
+	QHash<int, QByteArray> roleNames() const override;
+
+	std::unique_ptr<Task> remoteUpdateTask() override;
+	std::unique_ptr<Task> localUpdateTask() override;
+
+	QString localFilename() const override;
+	QJsonObject serialized() const override;
+
+	QString uid() const { return m_uid; }
+	QString name() const { return m_name; }
+	QString humanReadable() const;
+
+	bool hasVersion(const QString &version) const;
+	WonkoVersionPtr getVersion(const QString &version) const;
+
+	QVector<WonkoVersionPtr> versions() const { return m_versions; }
+
+public: // for usage only by parsers
+	void setName(const QString &name);
+	void setVersions(const QVector<WonkoVersionPtr> &versions);
+	void merge(const BaseWonkoEntity::Ptr &other);
+
+signals:
+	void nameChanged(const QString &name);
+
+protected slots:
+	void updateListData(QList<BaseVersionPtr> versions) override {}
+
+private:
+	QVector<WonkoVersionPtr> m_versions;
+	QHash<QString, WonkoVersionPtr> m_lookup;
+	QString m_uid;
+	QString m_name;
+
+	WonkoVersionPtr m_recommended;
+	WonkoVersionPtr m_latest;
+
+	void setupAddedVersion(const int row, const WonkoVersionPtr &version);
+};
+
+Q_DECLARE_METATYPE(WonkoVersionListPtr)
diff --git a/logic/wonko/format/WonkoFormat.cpp b/logic/wonko/format/WonkoFormat.cpp
new file mode 100644
index 00000000..11192cbe
--- /dev/null
+++ b/logic/wonko/format/WonkoFormat.cpp
@@ -0,0 +1,80 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoFormat.h"
+
+#include "WonkoFormatV1.h"
+
+#include "wonko/WonkoIndex.h"
+#include "wonko/WonkoVersion.h"
+#include "wonko/WonkoVersionList.h"
+
+static int formatVersion(const QJsonObject &obj)
+{
+	if (!obj.contains("formatVersion")) {
+		throw WonkoParseException(QObject::tr("Missing required field: 'formatVersion'"));
+	}
+	if (!obj.value("formatVersion").isDouble()) {
+		throw WonkoParseException(QObject::tr("Required field has invalid type: 'formatVersion'"));
+	}
+	return obj.value("formatVersion").toInt();
+}
+
+void WonkoFormat::parseIndex(const QJsonObject &obj, WonkoIndex *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 1:
+		ptr->merge(WonkoFormatV1().parseIndexInternal(obj));
+		break;
+	default:
+		throw WonkoParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+void WonkoFormat::parseVersion(const QJsonObject &obj, WonkoVersion *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 1:
+		ptr->merge(WonkoFormatV1().parseVersionInternal(obj));
+		break;
+	default:
+		throw WonkoParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+void WonkoFormat::parseVersionList(const QJsonObject &obj, WonkoVersionList *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 10:
+		ptr->merge(WonkoFormatV1().parseVersionListInternal(obj));
+		break;
+	default:
+		throw WonkoParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+
+QJsonObject WonkoFormat::serializeIndex(const WonkoIndex *ptr)
+{
+	return WonkoFormatV1().serializeIndexInternal(ptr);
+}
+QJsonObject WonkoFormat::serializeVersion(const WonkoVersion *ptr)
+{
+	return WonkoFormatV1().serializeVersionInternal(ptr);
+}
+QJsonObject WonkoFormat::serializeVersionList(const WonkoVersionList *ptr)
+{
+	return WonkoFormatV1().serializeVersionListInternal(ptr);
+}
diff --git a/logic/wonko/format/WonkoFormat.h b/logic/wonko/format/WonkoFormat.h
new file mode 100644
index 00000000..450d6ccc
--- /dev/null
+++ b/logic/wonko/format/WonkoFormat.h
@@ -0,0 +1,54 @@
+/* Copyright 2015 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 <QJsonObject>
+#include <memory>
+
+#include "Exception.h"
+#include "wonko/BaseWonkoEntity.h"
+
+class WonkoIndex;
+class WonkoVersion;
+class WonkoVersionList;
+
+class WonkoParseException : public Exception
+{
+public:
+	using Exception::Exception;
+};
+
+class WonkoFormat
+{
+public:
+	virtual ~WonkoFormat() {}
+
+	static void parseIndex(const QJsonObject &obj, WonkoIndex *ptr);
+	static void parseVersion(const QJsonObject &obj, WonkoVersion *ptr);
+	static void parseVersionList(const QJsonObject &obj, WonkoVersionList *ptr);
+
+	static QJsonObject serializeIndex(const WonkoIndex *ptr);
+	static QJsonObject serializeVersion(const WonkoVersion *ptr);
+	static QJsonObject serializeVersionList(const WonkoVersionList *ptr);
+
+protected:
+	virtual BaseWonkoEntity::Ptr parseIndexInternal(const QJsonObject &obj) const = 0;
+	virtual BaseWonkoEntity::Ptr parseVersionInternal(const QJsonObject &obj) const = 0;
+	virtual BaseWonkoEntity::Ptr parseVersionListInternal(const QJsonObject &obj) const = 0;
+	virtual QJsonObject serializeIndexInternal(const WonkoIndex *ptr) const = 0;
+	virtual QJsonObject serializeVersionInternal(const WonkoVersion *ptr) const = 0;
+	virtual QJsonObject serializeVersionListInternal(const WonkoVersionList *ptr) const = 0;
+};
diff --git a/logic/wonko/format/WonkoFormatV1.cpp b/logic/wonko/format/WonkoFormatV1.cpp
new file mode 100644
index 00000000..363eebfb
--- /dev/null
+++ b/logic/wonko/format/WonkoFormatV1.cpp
@@ -0,0 +1,156 @@
+/* Copyright 2015 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.
+ */
+
+#include "WonkoFormatV1.h"
+#include <minecraft/onesix/OneSixVersionFormat.h>
+
+#include "Json.h"
+
+#include "wonko/WonkoIndex.h"
+#include "wonko/WonkoVersion.h"
+#include "wonko/WonkoVersionList.h"
+#include "Env.h"
+
+using namespace Json;
+
+static WonkoVersionPtr parseCommonVersion(const QString &uid, const QJsonObject &obj)
+{
+	const QVector<QJsonObject> requiresRaw = obj.contains("requires") ? requireIsArrayOf<QJsonObject>(obj, "requires") : QVector<QJsonObject>();
+	QVector<WonkoReference> requires;
+	requires.reserve(requiresRaw.size());
+	std::transform(requiresRaw.begin(), requiresRaw.end(), std::back_inserter(requires), [](const QJsonObject &rObj)
+	{
+		WonkoReference ref(requireString(rObj, "uid"));
+		ref.setVersion(ensureString(rObj, "version", QString()));
+		return ref;
+	});
+
+	WonkoVersionPtr version = std::make_shared<WonkoVersion>(uid, requireString(obj, "version"));
+	if (obj.value("time").isString())
+	{
+		version->setTime(QDateTime::fromString(requireString(obj, "time"), Qt::ISODate).toMSecsSinceEpoch() / 1000);
+	}
+	else
+	{
+		version->setTime(requireInteger(obj, "time"));
+	}
+	version->setType(ensureString(obj, "type", QString()));
+	version->setRequires(requires);
+	return version;
+}
+static void serializeCommonVersion(const WonkoVersion *version, QJsonObject &obj)
+{
+	QJsonArray requires;
+	for (const WonkoReference &ref : version->requires())
+	{
+		if (ref.version().isEmpty())
+		{
+			requires.append(QJsonObject({{"uid", ref.uid()}}));
+		}
+		else
+		{
+			requires.append(QJsonObject({
+											{"uid", ref.uid()},
+											{"version", ref.version()}
+										}));
+		}
+	}
+
+	obj.insert("version", version->version());
+	obj.insert("type", version->type());
+	obj.insert("time", version->time().toString(Qt::ISODate));
+	obj.insert("requires", requires);
+}
+
+BaseWonkoEntity::Ptr WonkoFormatV1::parseIndexInternal(const QJsonObject &obj) const
+{
+	const QVector<QJsonObject> objects = requireIsArrayOf<QJsonObject>(obj, "index");
+	QVector<WonkoVersionListPtr> lists;
+	lists.reserve(objects.size());
+	std::transform(objects.begin(), objects.end(), std::back_inserter(lists), [](const QJsonObject &obj)
+	{
+		WonkoVersionListPtr list = std::make_shared<WonkoVersionList>(requireString(obj, "uid"));
+		list->setName(ensureString(obj, "name", QString()));
+		return list;
+	});
+	return std::make_shared<WonkoIndex>(lists);
+}
+BaseWonkoEntity::Ptr WonkoFormatV1::parseVersionInternal(const QJsonObject &obj) const
+{
+	WonkoVersionPtr version = parseCommonVersion(requireString(obj, "uid"), obj);
+
+	version->setData(OneSixVersionFormat::versionFileFromJson(QJsonDocument(obj),
+										   QString("%1/%2.json").arg(version->uid(), version->version()),
+										   obj.contains("order")));
+	return version;
+}
+BaseWonkoEntity::Ptr WonkoFormatV1::parseVersionListInternal(const QJsonObject &obj) const
+{
+	const QString uid = requireString(obj, "uid");
+
+	const QVector<QJsonObject> versionsRaw = requireIsArrayOf<QJsonObject>(obj, "versions");
+	QVector<WonkoVersionPtr> versions;
+	versions.reserve(versionsRaw.size());
+	std::transform(versionsRaw.begin(), versionsRaw.end(), std::back_inserter(versions), [this, uid](const QJsonObject &vObj)
+	{ return parseCommonVersion(uid, vObj); });
+
+	WonkoVersionListPtr list = std::make_shared<WonkoVersionList>(uid);
+	list->setName(ensureString(obj, "name", QString()));
+	list->setVersions(versions);
+	return list;
+}
+
+QJsonObject WonkoFormatV1::serializeIndexInternal(const WonkoIndex *ptr) const
+{
+	QJsonArray index;
+	for (const WonkoVersionListPtr &list : ptr->lists())
+	{
+		index.append(QJsonObject({
+									 {"uid", list->uid()},
+									 {"name", list->name()}
+								 }));
+	}
+	return QJsonObject({
+						   {"formatVersion", 1},
+						   {"index", index}
+					   });
+}
+QJsonObject WonkoFormatV1::serializeVersionInternal(const WonkoVersion *ptr) const
+{
+	QJsonObject obj = OneSixVersionFormat::versionFileToJson(ptr->data(), true).object();
+	serializeCommonVersion(ptr, obj);
+	obj.insert("formatVersion", 1);
+	obj.insert("uid", ptr->uid());
+	// TODO: the name should be looked up in the UI based on the uid
+	obj.insert("name", ENV.wonkoIndex()->getListGuaranteed(ptr->uid())->name());
+
+	return obj;
+}
+QJsonObject WonkoFormatV1::serializeVersionListInternal(const WonkoVersionList *ptr) const
+{
+	QJsonArray versions;
+	for (const WonkoVersionPtr &version : ptr->versions())
+	{
+		QJsonObject obj;
+		serializeCommonVersion(version.get(), obj);
+		versions.append(obj);
+	}
+	return QJsonObject({
+						   {"formatVersion", 10},
+						   {"uid", ptr->uid()},
+						   {"name", ptr->name().isNull() ? QJsonValue() : ptr->name()},
+						   {"versions", versions}
+					   });
+}
diff --git a/logic/wonko/format/WonkoFormatV1.h b/logic/wonko/format/WonkoFormatV1.h
new file mode 100644
index 00000000..92759804
--- /dev/null
+++ b/logic/wonko/format/WonkoFormatV1.h
@@ -0,0 +1,30 @@
+/* Copyright 2015 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 "WonkoFormat.h"
+
+class WonkoFormatV1 : public WonkoFormat
+{
+public:
+	BaseWonkoEntity::Ptr parseIndexInternal(const QJsonObject &obj) const override;
+	BaseWonkoEntity::Ptr parseVersionInternal(const QJsonObject &obj) const override;
+	BaseWonkoEntity::Ptr parseVersionListInternal(const QJsonObject &obj) const override;
+
+	QJsonObject serializeIndexInternal(const WonkoIndex *ptr) const override;
+	QJsonObject serializeVersionInternal(const WonkoVersion *ptr) const override;
+	QJsonObject serializeVersionListInternal(const WonkoVersionList *ptr) const override;
+};
diff --git a/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.cpp b/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.cpp
new file mode 100644
index 00000000..b54c592f
--- /dev/null
+++ b/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.cpp
@@ -0,0 +1,117 @@
+/* Copyright 2015 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.
+ */
+
+#include "BaseWonkoEntityLocalLoadTask.h"
+
+#include <QFile>
+
+#include "wonko/format/WonkoFormat.h"
+#include "wonko/WonkoUtil.h"
+#include "wonko/WonkoIndex.h"
+#include "wonko/WonkoVersion.h"
+#include "wonko/WonkoVersionList.h"
+#include "Env.h"
+#include "Json.h"
+
+BaseWonkoEntityLocalLoadTask::BaseWonkoEntityLocalLoadTask(BaseWonkoEntity *entity, QObject *parent)
+	: Task(parent), m_entity(entity)
+{
+}
+
+void BaseWonkoEntityLocalLoadTask::executeTask()
+{
+	const QString fname = Wonko::localWonkoDir().absoluteFilePath(filename());
+	if (!QFile::exists(fname))
+	{
+		emitFailed(tr("File doesn't exist"));
+		return;
+	}
+
+	setStatus(tr("Reading %1...").arg(name()));
+	setProgress(0, 0);
+
+	try
+	{
+		parse(Json::requireObject(Json::requireDocument(fname, name()), name()));
+		m_entity->notifyLocalLoadComplete();
+		emitSucceeded();
+	}
+	catch (Exception &e)
+	{
+		emitFailed(tr("Unable to parse file %1: %2").arg(fname, e.cause()));
+	}
+}
+
+//      WONKO INDEX      //
+WonkoIndexLocalLoadTask::WonkoIndexLocalLoadTask(WonkoIndex *index, QObject *parent)
+	: BaseWonkoEntityLocalLoadTask(index, parent)
+{
+}
+QString WonkoIndexLocalLoadTask::filename() const
+{
+	return "index.json";
+}
+QString WonkoIndexLocalLoadTask::name() const
+{
+	return tr("Wonko Index");
+}
+void WonkoIndexLocalLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseIndex(obj, dynamic_cast<WonkoIndex *>(entity()));
+}
+
+//      WONKO VERSION LIST      //
+WonkoVersionListLocalLoadTask::WonkoVersionListLocalLoadTask(WonkoVersionList *list, QObject *parent)
+	: BaseWonkoEntityLocalLoadTask(list, parent)
+{
+}
+QString WonkoVersionListLocalLoadTask::filename() const
+{
+	return list()->uid() + ".json";
+}
+QString WonkoVersionListLocalLoadTask::name() const
+{
+	return tr("Wonko Version List for %1").arg(list()->humanReadable());
+}
+void WonkoVersionListLocalLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseVersionList(obj, list());
+}
+WonkoVersionList *WonkoVersionListLocalLoadTask::list() const
+{
+	return dynamic_cast<WonkoVersionList *>(entity());
+}
+
+//      WONKO VERSION      //
+WonkoVersionLocalLoadTask::WonkoVersionLocalLoadTask(WonkoVersion *version, QObject *parent)
+	: BaseWonkoEntityLocalLoadTask(version, parent)
+{
+}
+QString WonkoVersionLocalLoadTask::filename() const
+{
+	return version()->uid() + "/" + version()->version() + ".json";
+}
+QString WonkoVersionLocalLoadTask::name() const
+{
+	return tr("Wonko Version for %1").arg(version()->name());
+}
+void WonkoVersionLocalLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseVersion(obj, version());
+}
+WonkoVersion *WonkoVersionLocalLoadTask::version() const
+{
+	return dynamic_cast<WonkoVersion *>(entity());
+}
diff --git a/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.h b/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.h
new file mode 100644
index 00000000..2affa17f
--- /dev/null
+++ b/logic/wonko/tasks/BaseWonkoEntityLocalLoadTask.h
@@ -0,0 +1,81 @@
+/* Copyright 2015 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 "tasks/Task.h"
+#include <memory>
+
+class BaseWonkoEntity;
+class WonkoIndex;
+class WonkoVersionList;
+class WonkoVersion;
+
+class BaseWonkoEntityLocalLoadTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit BaseWonkoEntityLocalLoadTask(BaseWonkoEntity *entity, QObject *parent = nullptr);
+
+protected:
+	virtual QString filename() const = 0;
+	virtual QString name() const = 0;
+	virtual void parse(const QJsonObject &obj) const = 0;
+
+	BaseWonkoEntity *entity() const { return m_entity; }
+
+private:
+	void executeTask() override;
+
+	BaseWonkoEntity *m_entity;
+};
+
+class WonkoIndexLocalLoadTask : public BaseWonkoEntityLocalLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoIndexLocalLoadTask(WonkoIndex *index, QObject *parent = nullptr);
+
+private:
+	QString filename() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+};
+class WonkoVersionListLocalLoadTask : public BaseWonkoEntityLocalLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoVersionListLocalLoadTask(WonkoVersionList *list, QObject *parent = nullptr);
+
+private:
+	QString filename() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+
+	WonkoVersionList *list() const;
+};
+class WonkoVersionLocalLoadTask : public BaseWonkoEntityLocalLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoVersionLocalLoadTask(WonkoVersion *version, QObject *parent = nullptr);
+
+private:
+	QString filename() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+
+	WonkoVersion *version() const;
+};
diff --git a/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.cpp b/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.cpp
new file mode 100644
index 00000000..727ec89d
--- /dev/null
+++ b/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.cpp
@@ -0,0 +1,126 @@
+/* Copyright 2015 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.
+ */
+
+#include "BaseWonkoEntityRemoteLoadTask.h"
+
+#include "net/CacheDownload.h"
+#include "net/HttpMetaCache.h"
+#include "net/NetJob.h"
+#include "wonko/format/WonkoFormat.h"
+#include "wonko/WonkoUtil.h"
+#include "wonko/WonkoIndex.h"
+#include "wonko/WonkoVersion.h"
+#include "wonko/WonkoVersionList.h"
+#include "Env.h"
+#include "Json.h"
+
+BaseWonkoEntityRemoteLoadTask::BaseWonkoEntityRemoteLoadTask(BaseWonkoEntity *entity, QObject *parent)
+	: Task(parent), m_entity(entity)
+{
+}
+
+void BaseWonkoEntityRemoteLoadTask::executeTask()
+{
+	NetJob *job = new NetJob(name());
+
+	auto entry = ENV.metacache()->resolveEntry("wonko", url().toString());
+	entry->setStale(true);
+	m_dl = CacheDownload::make(url(), entry);
+	job->addNetAction(m_dl);
+	connect(job, &NetJob::failed, this, &BaseWonkoEntityRemoteLoadTask::emitFailed);
+	connect(job, &NetJob::succeeded, this, &BaseWonkoEntityRemoteLoadTask::networkFinished);
+	connect(job, &NetJob::status, this, &BaseWonkoEntityRemoteLoadTask::setStatus);
+	connect(job, &NetJob::progress, this, &BaseWonkoEntityRemoteLoadTask::setProgress);
+	job->start();
+}
+
+void BaseWonkoEntityRemoteLoadTask::networkFinished()
+{
+	setStatus(tr("Parsing..."));
+	setProgress(0, 0);
+
+	try
+	{
+		parse(Json::requireObject(Json::requireDocument(m_dl->getTargetFilepath(), name()), name()));
+		m_entity->notifyRemoteLoadComplete();
+		emitSucceeded();
+	}
+	catch (Exception &e)
+	{
+		emitFailed(tr("Unable to parse response: %1").arg(e.cause()));
+	}
+}
+
+//      WONKO INDEX      //
+WonkoIndexRemoteLoadTask::WonkoIndexRemoteLoadTask(WonkoIndex *index, QObject *parent)
+	: BaseWonkoEntityRemoteLoadTask(index, parent)
+{
+}
+QUrl WonkoIndexRemoteLoadTask::url() const
+{
+	return Wonko::indexUrl();
+}
+QString WonkoIndexRemoteLoadTask::name() const
+{
+	return tr("Wonko Index");
+}
+void WonkoIndexRemoteLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseIndex(obj, dynamic_cast<WonkoIndex *>(entity()));
+}
+
+//      WONKO VERSION LIST      //
+WonkoVersionListRemoteLoadTask::WonkoVersionListRemoteLoadTask(WonkoVersionList *list, QObject *parent)
+	: BaseWonkoEntityRemoteLoadTask(list, parent)
+{
+}
+QUrl WonkoVersionListRemoteLoadTask::url() const
+{
+	return Wonko::versionListUrl(list()->uid());
+}
+QString WonkoVersionListRemoteLoadTask::name() const
+{
+	return tr("Wonko Version List for %1").arg(list()->humanReadable());
+}
+void WonkoVersionListRemoteLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseVersionList(obj, list());
+}
+WonkoVersionList *WonkoVersionListRemoteLoadTask::list() const
+{
+	return dynamic_cast<WonkoVersionList *>(entity());
+}
+
+//      WONKO VERSION      //
+WonkoVersionRemoteLoadTask::WonkoVersionRemoteLoadTask(WonkoVersion *version, QObject *parent)
+	: BaseWonkoEntityRemoteLoadTask(version, parent)
+{
+}
+QUrl WonkoVersionRemoteLoadTask::url() const
+{
+	return Wonko::versionUrl(version()->uid(), version()->version());
+}
+QString WonkoVersionRemoteLoadTask::name() const
+{
+	return tr("Wonko Version for %1").arg(version()->name());
+}
+void WonkoVersionRemoteLoadTask::parse(const QJsonObject &obj) const
+{
+	WonkoFormat::parseVersion(obj, version());
+}
+WonkoVersion *WonkoVersionRemoteLoadTask::version() const
+{
+	return dynamic_cast<WonkoVersion *>(entity());
+}
diff --git a/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.h b/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.h
new file mode 100644
index 00000000..91ed6af0
--- /dev/null
+++ b/logic/wonko/tasks/BaseWonkoEntityRemoteLoadTask.h
@@ -0,0 +1,85 @@
+/* Copyright 2015 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 "tasks/Task.h"
+#include <memory>
+
+class BaseWonkoEntity;
+class WonkoIndex;
+class WonkoVersionList;
+class WonkoVersion;
+
+class BaseWonkoEntityRemoteLoadTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit BaseWonkoEntityRemoteLoadTask(BaseWonkoEntity *entity, QObject *parent = nullptr);
+
+protected:
+	virtual QUrl url() const = 0;
+	virtual QString name() const = 0;
+	virtual void parse(const QJsonObject &obj) const = 0;
+
+	BaseWonkoEntity *entity() const { return m_entity; }
+
+private slots:
+	void networkFinished();
+
+private:
+	void executeTask() override;
+
+	BaseWonkoEntity *m_entity;
+	std::shared_ptr<class CacheDownload> m_dl;
+};
+
+class WonkoIndexRemoteLoadTask : public BaseWonkoEntityRemoteLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoIndexRemoteLoadTask(WonkoIndex *index, QObject *parent = nullptr);
+
+private:
+	QUrl url() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+};
+class WonkoVersionListRemoteLoadTask : public BaseWonkoEntityRemoteLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoVersionListRemoteLoadTask(WonkoVersionList *list, QObject *parent = nullptr);
+
+private:
+	QUrl url() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+
+	WonkoVersionList *list() const;
+};
+class WonkoVersionRemoteLoadTask : public BaseWonkoEntityRemoteLoadTask
+{
+	Q_OBJECT
+public:
+	explicit WonkoVersionRemoteLoadTask(WonkoVersion *version, QObject *parent = nullptr);
+
+private:
+	QUrl url() const override;
+	QString name() const override;
+	void parse(const QJsonObject &obj) const override;
+
+	WonkoVersion *version() const;
+};